JPH0674567B2 - Paving method - Google Patents
Paving methodInfo
- Publication number
- JPH0674567B2 JPH0674567B2 JP481690A JP481690A JPH0674567B2 JP H0674567 B2 JPH0674567 B2 JP H0674567B2 JP 481690 A JP481690 A JP 481690A JP 481690 A JP481690 A JP 481690A JP H0674567 B2 JPH0674567 B2 JP H0674567B2
- Authority
- JP
- Japan
- Prior art keywords
- clay
- particle size
- soil
- pavement
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 38
- 239000004927 clay Substances 0.000 claims description 75
- 239000010410 layer Substances 0.000 claims description 40
- 239000002245 particle Substances 0.000 claims description 39
- 239000002344 surface layer Substances 0.000 claims description 27
- 239000011230 binding agent Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000007873 sieving Methods 0.000 claims description 8
- 230000000704 physical effect Effects 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 30
- 239000002699 waste material Substances 0.000 description 18
- 238000010276 construction Methods 0.000 description 8
- 238000004898 kneading Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 7
- 230000035699 permeability Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 206010016807 Fluid retention Diseases 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003027 oil sand Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000011041 water permeability test Methods 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
- Road Repair (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、全天候型クレイ舗装方法に関するものであ
る。The present invention relates to an all-weather clay paving method.
わが国の屋外体育施設や遊歩道のほとんどは、自然土を
利用して造られており、関西では真砂土、関東では荒木
田土、関東ロームなどであるが、屋外であるために非常
に過酷な自然環境の影響を受けて、クレイそのものが著
しく劣悪化しやすく、一定期間毎に改修工事を行わなけ
ればならない。Most of the outdoor gymnasiums and promenades in Japan are made using natural soil, such as Masago soil in Kansai, Arakida soil in Kanto, and Kanto loam, but it is a very harsh natural environment because it is outdoors. Under the influence of, the clay itself is likely to deteriorate significantly, and repair work must be carried out at regular intervals.
従来より、関西においては、表層／下層／暗渠の３層よ
りなる真砂土舗装方法が用いられている。この塗装方法
による構造は、表層が集さ約100mmの真砂土あるいはア
ンツーカー等の層、下層が厚さ約100mmの砕石、クラッ
シャーラン等の層となっていて、最も下に位置する暗渠
には透水管が入れられ、その回りはフィルター材として
単粒砕石を入れられている。Conventionally, in Kansai, a sand sand soil pavement method consisting of three layers of a surface layer / a lower layer / an underdrain has been used. The structure by this coating method is such that the surface layer is a layer of sand sand or Antuker with a thickness of about 100 mm, the lower layer is a layer of crushed stone with a thickness of about 100 mm, crusher run, etc., and the bottom culvert is permeable to water. A tube is placed around it, and a single crushed stone is placed around it as a filter material.
上記のような真砂土舗装の構造にあっては、施工当初
は、表層の真砂土の透水性は良好であるが、単粒構造で
あるために細粒部分が水に融ける性質をもち、長期間使
用されるうちに雨水と共に沈下し、糊状となって下層上
部に付着し、遮断層を形成する。この遮断層が形成され
ると、下層部へ水を透すことが全くできなくなり、劣悪
化した表層土（廃棄土）となるので、降雨時には表層面
が軟弱となり、ぬかるみやすい。In the structure of the above sand sand pavement, the water permeability of the surface sand sand is good at the beginning of construction, but since it has a single grain structure, the fine grain portion has the property of melting in water. During use for a period of time, it sinks with rainwater, becomes a paste and adheres to the upper part of the lower layer to form a barrier layer. When this barrier layer is formed, water cannot penetrate to the lower layer at all, resulting in poorly deteriorated surface soil (waste soil). Therefore, the surface layer becomes soft and rainy when it rains.
従来においては、このようになった舗装を改修するの
に、廃棄土を全部掘削し、新たに良質の真砂土と入れ替
える方法が行われているが、下層以下が目づまりを起こ
している場合には、さらに下層部や暗渠の透水管も入れ
替える必要があるので、膨大な費用がかかる。Conventionally, in order to repair the pavement that has become like this, a method of excavating all the waste soil and replacing it with a new good quality Masago soil has been used, but when the lower layer and below are clogged Moreover, since it is necessary to replace the lower layer and the underwater conduit, the cost is huge.
また、この改修方法では、工事に伴って発生する廃棄土
は、産業廃棄物として法的規制を受け、廃棄場所を制限
される等の処理方法が最近問題となり、一方では、入れ
替えに使用する良質の表層土を掘削することが大きな社
会問題となり、その入手が極めて困難となってきた。In addition, in this remediation method, the waste soil generated during construction is subject to legal restrictions as industrial waste, and the disposal method is limited recently, and on the other hand, on the other hand, good quality used for replacement. Excavation of the surface soil has become a major social problem and it has become extremely difficult to obtain it.
この他の舗装改修方法には、固化材としてオイルサンド
を用いるオイルサンド方法がある。この方法は、固化材
に含まれる硬化要素剤が改良土中の水分が蒸発するにつ
れて効果を発揮し、固化して強固な舗装面を形成するも
ので、この時の舗装面の硬度および強度は、硬化要素剤
の含有割合が押いほど高くなる。この方法によれば、発
水性に優れた舗装面が得られるが、土粒子の粒度が荒く
なったり、混合ムラが発生したり、材料費が割高となる
等の問題点がある。Another pavement repair method is an oil sand method using oil sand as a solidifying material. In this method, the hardening element agent contained in the solidifying material exerts its effect as the water in the improved soil evaporates, and solidifies to form a strong pavement surface, and the hardness and strength of the pavement surface at this time are The content ratio of the curing element agent becomes higher as it is pushed. According to this method, a pavement surface excellent in water repellency can be obtained, but there are problems that the particle size of soil particles becomes coarse, uneven mixing occurs, and the material cost becomes expensive.
そこで、今日で上記の問題点を解決することが可能な全
天候型クレイ舗装方法の開発が要望されている。Therefore, today, there is a demand for development of an all-weather clay paving method capable of solving the above problems.
本発明は、上記の問題点を解決し、自然環境の影響によ
り物性が劣化した表層部分のクレイを良質クレイに改良
して再利用を図り、優れた物性を有し、かつ、低価格で
改修可能な全天候型クレイ舗装方法を提供するものであ
る。The present invention solves the above problems, improves the clay of the surface layer portion whose physical properties have deteriorated due to the influence of the natural environment to good quality clay, and reuses it, has excellent physical properties, and is refurbished at a low price. It provides a possible all-weather clay paving method.
本発明の全天候型クレイ舗装方法は、表層／下層／暗渠
の３層よりなるクレイ舗装において、 ａ）自然環境の影響により物性が劣化した表層部分のク
レイを掘削し、上記表層部分のクレイを粒度の小さなク
レイと粒度の大きなクレイとに篩い分ける工程 ｂ）上記粒度の大きなクレイを、下層の上部に引きなら
して転圧する工程 ｃ）上記粒度の小さなクレイに、水硬性結合材を添加し
て団粒化かせ、プレミックスクレイとする工程 ｄ）上記プレミックスクレイを、表層に引きならして転
圧する工程 により構成されることを特徴とする。The all-weather clay pavement method of the present invention is a clay pavement comprising three layers of surface layer / lower layer / underdrain: a) excavating the clay of the surface layer portion whose physical properties have deteriorated due to the influence of the natural environment, and granulating the clay of the surface layer portion. B) a step of sieving into small clay and a large particle size clay b) step of rolling the large particle size clay onto the upper part of the lower layer c) adding a hydraulic binder to the small particle size clay A step of agglomerating to form a premixed clay d) A step of rolling the premixed clay onto the surface layer and rolling it.
以下、本発明の各工程を詳細に説明する。Hereinafter, each step of the present invention will be described in detail.
まず、工程ａ）において、劣悪化した表層部分のクレイ
（廃棄土）を一定の厚さで掘削する。一般的には、掘削
される廃棄土の厚さは約100mmである。そして、この廃
棄土を、粒度選別機により、粒度の小さなクレイと粒度
の大きなクレイとに篩い分ける。この篩い分けの際の粒
度の分割範囲は、競技種目に応じて任意に選ぶことがで
きるが、一般的には、5mm以下のものと5mm以下のものと
に篩い分けることが好ましい。たとえば、このような篩
い分けを行った場合、一般的には5mm以上の粒度のクレ
イが約30〜40％、5mm以下の粒度のクレイが約60〜70％
得られる。First, in step a), clay (waste soil) in the surface layer portion that has deteriorated is excavated with a constant thickness. Generally, excavated waste soil has a thickness of about 100 mm. Then, this waste soil is sieved into a clay having a small particle size and a clay having a large particle size by a particle size selector. The dividing range of the particle size at the time of sieving can be arbitrarily selected according to the competition event, but in general, sieving into 5 mm or less and 5 mm or less is preferable. For example, when such sieving is performed, generally about 30 to 40% of clay with a particle size of 5 mm or more and about 60 to 70% of clay with a particle size of 5 mm or less.
can get.
粒度の選別を実施する場合の方法としては、水で土砂を
洗浄しながら定められた網目の上を通すことによって粒
度選別する湿式法と、含水率30％程度の乾燥した状態の
ままで定められた網目の上を通すことによって粒度選別
する乾式法があるが、本発明では、一般的に改良対象現
地が学校や運動公園など市街化区域内にあることが多い
ため、水洗を実施することは困難であり、乾式法が広く
用いられる。しかも、このような改良対象現地に大型の
粒度選別機を設置することは難しく、本発明に使用され
る粒度選別機は、たとえば、4tトラック程度で搬送する
ことができるものであることが好ましい。このように、
移動式選別機を予め現地に設置することによって、改良
対象現地での施工が可能となるので、土砂の搬入や搬出
の手間が不要となり、経済性の点からも優れる。The methods for selecting the particle size are the wet method of selecting the particle size by passing it through the defined mesh while washing the soil with water, and the dry state with a water content of about 30%. Although there is a dry method in which the particle size is selected by passing it through a mesh, in the present invention, the target site for improvement is generally located in an urbanized area such as a school or sports park. Difficult and the dry method is widely used. Moreover, it is difficult to install a large-sized particle size sorter on the site to be improved, and it is preferable that the particle size sorter used in the present invention is capable of being transported by, for example, about 4 ton truck. in this way,
By installing a mobile sorter in the field in advance, it becomes possible to carry out the construction on the site to be improved, which eliminates the trouble of loading and unloading the earth and sand, and is economically advantageous.
また、本発明に使用される移動式の粒度選別機は、たと
えば、改良対象現地が標準最大面積20,000m2の学校で、
工事期間が約15日間である場合にあっては、約200m3/1
日（８時間稼働）の改良土を提供できる能力が必要とな
る。Further, the mobile particle size sorter used in the present invention is, for example, a school with a standard maximum area of 20,000 m 2 for improvement,
In the case the construction period is about 15 days, about 200 meters 3/1
The ability to provide improved soil for the day (8 hours operation) is required.
次に、工程ｂ）において、篩い分けを行って得られた粒
度の大きなクレイを、砕石等からなる下層の上部に約30
〜40mmの厚さで引きならし、転圧用ローラーにて転圧す
る。このようにして形成された粒度の大きなクレイ層
は、粒度が揃い、透水性が改良されたものとなる。Next, in step b), about 30 g of the large-sized clay obtained by sieving is applied to the upper part of the lower layer made of crushed stone or the like.
Roll it to a thickness of ~ 40mm and roll it with a roller for rolling. The clay layer having a large particle size formed in this manner has uniform particle size and improved water permeability.
一方、工程ｃ）では、粒度の小さなクレイに水硬性結合
材を添加して団粒化させ、自然環境の影響により物性が
劣化したクレイを良質のプレミックスクレイとして再生
する。この水硬性結合材とは、他の土壌、たとえば真砂
土と任意に混合させることによって、他の土壌中に含ま
れている水に融けやすいシルト粘土鉱物に化学的に結合
し、水に不融な粘土鉱物を作り出すもので、本発明にお
いて使用される水硬性結合材は、シリカ、酸化アルミニ
ウム、酸化カルシウムを主成分とするものが好ましい。On the other hand, in the step c), a hydraulic binder is added to the clay having a small particle size to aggregate the clay, and the clay whose physical properties are deteriorated due to the influence of the natural environment is regenerated as a high quality premixed clay. This hydraulic binder is chemically mixed with the silt clay mineral that is easily soluble in water contained in other soils by mixing it with other soils, for example, sand sand, and it is insoluble in water. It is preferable that the hydraulic binder used in the present invention is a clay mineral that mainly contains silica, aluminum oxide, and calcium oxide.
水硬性結合材の添加量は、競技種目に応じた表層面の堅
さを得るために、適宜調節されるが、一般的には、粒度
の小さなクレイに対して20〜40％の割合で添加されるこ
とが好ましい。The addition amount of the hydraulic binder is appropriately adjusted to obtain the hardness of the surface layer according to the sporting event, but in general, it is added at a rate of 20 to 40% with respect to clay having a small particle size. Preferably.
工程ｃ）の団粒化混練の工程においては、前述の粒度選
別機と同様、団粒化混練機を改良対象現地に設置するこ
とが好ましく、移動式の団粒化混練機が使用される。本
発明に使用される団粒化混練機としては、生コンクリー
トミキサー・アジテーターのドラム内のブレードにミキ
シングブレードが設置され、団粒化の促進および排水効
率の向上を図ったものや、羽根を回転させることによっ
て強制撹拌を行うものなどが好ましい。In the step of c) the kneading and kneading step, it is preferable to install the kneading and kneading machine on the site to be improved, like the above-mentioned particle size selecting machine, and a mobile kneading and kneading machine is used. As the agglomerating kneader used in the present invention, a mixing blade is installed on the blade in the drum of the fresh concrete mixer / agitator to promote the agglomeration and improve the drainage efficiency, and the blade is rotated. Those forcibly stirring by doing so are preferable.
最後に、工程ｄ）では、団粒化させたプレミックスクレ
イを、表層に約60〜70mmの厚さで引きならして転圧用ロ
ーラーにて転圧し、プレミックスクレイ層を形成させ、
全天候型クレイ舗装とする。Finally, in step d), the aggregated premixed clay is drawn to the surface layer with a thickness of about 60 to 70 mm and rolled by a roller for compaction to form a premixed clay layer,
All-weather clay pavement.
第１図および第２図に、それぞれ、表層が劣化した従来
のクレイ舗装の断面構造および本発明により改修された
後の全天候型クレイ舗装の断面構造を示す。1 and 2 show a cross-sectional structure of a conventional clay pavement having a deteriorated surface layer and a cross-sectional structure of an all-weather clay pavement after being modified by the present invention, respectively.
第１図においては、自然環境の影響により表層（１）と
下層（２）の間に、糊板状になった遮断層（４）が形成
されており、下層（２）へ水が全く透らない状態になっ
ている。最も下に位置する暗渠（３）には透水管（６）
が入れられ、その回りにはフィルター材として単粒砕石
（５）が存在する。In FIG. 1, a glue plate-like blocking layer (4) is formed between the surface layer (1) and the lower layer (2) due to the influence of the natural environment, and water is completely transmitted to the lower layer (2). It is not ready. Water pipe (6) in the underdrain (3) located at the bottom
Are put around, and single-grain crushed stones (5) are present around them as a filter material.
これに対して第２図では、本発明の塗装方法により、表
層部分がプレミックスクレイ層（７）と粒度の大きなク
レイ層（８）からなる二層構造をなし、最も表面側に位
置する再生されたプレミックスクレイ層（７）が耐水性
に優れるので、第１図のような遮断層が形成されること
なく、耐候性が著しく改善される。On the other hand, in FIG. 2, by the coating method of the present invention, the surface layer portion has a two-layer structure composed of the premixed clay layer (7) and the clay layer (8) having a large grain size, and the regenerated layer is located on the most surface side. Since the prepared premix clay layer (7) has excellent water resistance, the weather resistance is remarkably improved without forming the barrier layer as shown in FIG.
次に、真砂土が劣悪化する原因および本発明における廃
棄土の再生機構を説明する。Next, the reason why the sand sand soil becomes inferior and the regeneration mechanism of the waste soil in the present invention will be described.
工程ａ）において篩い分けられた粒度の小さなクレイ中
には、粒径が0.074mm以下のシルト粘土コロイド分が約2
0〜28％も含まれ、これが、水によって融けるために、
降雨後ぬかるんだり、土壌崩壊になったり、冬季の霜
害、雪害、夏季の塵害の原因となっている。Approximately 2 silt clay colloids with a particle size of 0.074 mm or less are contained in the small-sized clay screened in step a).
It also contains 0-28%, because it melts with water,
It causes muddy soil after rain, soil collapse, frost damage in winter, snow damage, and dust damage in summer.
この問題点を解決するために水硬性結合材が使用される
のであるが、本発明では、上記工程ｃ）において、粒径
が0.074mm以下のシルト粘土コロイド分が持つ水に融け
て糊状となる性質を有効に利用し、団粒化混練機で混練
する時に、クレイ粒子同士が接触し繋ぎ合わさり団粒化
結合する際の接着剤としてシルト粘土コロイド分が働く
ようにして、団粒化を促進させる。これにより、水硬性
結合材の団粒硬化は非常に効率的なものとなる。A hydraulic binder is used to solve this problem, but in the present invention, in the step c), it is melted in water contained in the silt clay colloid having a particle size of 0.074 mm or less to form a paste. By effectively utilizing this property, when kneading with an agglomerating kneader, the silt clay colloid component acts as an adhesive when the clay particles come into contact with each other and join together to form an agglomerate. Promote. This makes the aggregate hardening of the hydraulic binder very efficient.
そして、この方法によって、再生されたプレミックスク
レイは、耐水性が向上され、雨水と共に沈下しても水に
対して融けず、糊状となって遮断層を形成することがな
いので、冬季において凍る原因となる水分が少なく、霜
害や雪害が少ないという特徴を有する。また、完全な団
粒構造が形成されているために団粒の間に吸着水が付着
し、30〜40％の保水性をもち、夏季にあっても一定の水
分を有するので、埃がたちにくい。しかも、完全な団粒
構造により、降雨時には30〜40％の結合水を保持し表面
排水を多くする半面、表層土の間隔が大きいので透水性
が増大し、浸透した雨水は速やかに下層に吸収され、深
層地下水となる。By this method, the regenerated premix clay has improved water resistance, does not melt into water even when it sinks together with rainwater, and does not form a paste-like blocking layer, so that it does not form a blocking layer in winter. It is characterized by less water that causes freezing and less frost damage and snow damage. In addition, since a complete aggregate structure is formed, adsorbed water adheres between the aggregates and has a water retention of 30 to 40%, and since it has a certain amount of water even in the summer, dust forms. Hateful. Moreover, due to the complete aggregate structure, 30 to 40% of the combined water is retained during rainfall and surface drainage is increased, but the gap between the surface soils is large, increasing permeability, and the infiltrated rainwater is quickly absorbed by the lower layers. It becomes deep groundwater.
また、再生されたプレミックスクレイは、混合団粒化す
るので品質が均一で、混合ムラが発生せず、粒度がそろ
ったものが得られ、表層面の物性は良好なものとなる。In addition, the regenerated premixed clay is formed into mixed aggregates, so that the quality is uniform, mixing unevenness does not occur, and particles having a uniform particle size are obtained, and the physical properties of the surface layer surface are good.
本発明により得られる全天候型クレイ舗装は、上記のよ
うに耐水性、透水性および保水性に優れるだけでなく、
一年を通して保守に手間がかからない。そして、外見的
には、土舗装そのものであるから土の特有の適度な弾性
を有し、使用感も優れたものである。All-weather clay pavement obtained by the present invention is not only excellent in water resistance, water permeability and water retention as described above,
Maintenance is easy throughout the year. From the outside, the soil pavement itself has an appropriate elasticity peculiar to the soil and is excellent in usability.
さらに本発明では、工程ｃ）において、着色された水硬
性結合材を添加することにより、競技種目に適した色を
有する表層土とすることもでき、種々の要望に対応した
ものが得られる。Further, in the present invention, in step c), a colored hydraulic binder may be added to form a surface soil having a color suitable for an athletic event, and various types of soil satisfying various needs can be obtained.
また一方、本発明では、舗装方法の改修用の材料に、従
来においては廃棄処分されていた廃棄土を使用し、これ
の再利用するので、良質の真砂土を入れ替える方法に比
べて低価格で工事を行うことができる。そして、従来方
法で問題となっていた廃棄土の処理が不要となる。On the other hand, in the present invention, as the material for the improvement of the pavement method, the waste soil that has been disposed of in the past is used and reused, so that the cost is lower than the method of replacing the high quality sand sand soil. Construction can be done. Then, it becomes unnecessary to treat the waste soil, which has been a problem in the conventional method.
この他に、本発明では、上記の各工程ａ）〜ｄ）が、改
良対象現地において実施できるので、従来の方法のよう
な土砂の搬入や搬出が減少し、工事期間の短縮が量ら
れ、トラックによる周囲の環境への悪影響が少ないなど
の特徴も挙げられる。また、本発明の舗装方法を実施し
た場合では、従来の表層土を全て入れ替える方法に比べ
て、約10〜20％の改修費用の低減を図ることもできる。In addition to this, in the present invention, each of the above steps a) to d) can be carried out at the site to be improved, so that the loading and unloading of earth and sand as in the conventional method is reduced, and the construction period is shortened. Other features include that trucks have little adverse effect on the surrounding environment. Further, when the pavement method of the present invention is carried out, it is possible to reduce the repair cost by about 10 to 20% as compared with the conventional method of replacing all the surface soil.
なお、本発明の舗装方法を実施するにあたり、表層面の
堅さは競技種目に応じて決定されるわけであるが、この
堅さを制御する水硬性結合材の添加割合は非常に重要で
あり、事前に廃棄土の粒径試験、透水試験などを行い、
最も適した添加割合を確認しておく必要がある。Incidentally, in carrying out the paving method of the present invention, the hardness of the surface layer is determined according to the competition event, but the addition ratio of the hydraulic binder for controlling this hardness is very important. , Conduct particle size test and water permeability test of waste soil in advance,
It is necessary to confirm the most suitable addition ratio.
下記の実施例および比較例は、本発明の舗装方法と、表
層土を新たに入れ替える従来の舗装方法を具体的に例示
し、かつ、両者の性能比較結果を示したものである。The following examples and comparative examples concretely exemplify the pavement method of the present invention and the conventional pavement method in which the surface soil is newly replaced, and show the performance comparison results of both.
劣悪化した表層土（廃棄土）を有する屋外体育施設にお
いて、 ａ）表層の廃棄土を約100mmの厚さで掘削し、予め改良
対象現地に設置した移動式の粒度選別機により、5mm以
下の粒度クレイと5mm以上の粒度のクレイとに篩い分け
た。In an outdoor physical education facility that has deteriorated surface soil (waste soil): a) Excavate the surface soil to a thickness of approximately 100 mm, and use a mobile particle size sorter installed in advance at the site to be improved It was sieved into a clay with a particle size and a clay with a particle size of 5 mm or more.
この粒度選別工程により、5mm以上の粒度のクレイが約4
0％、5mm以下の粒度のクレイが約60％得られた。About 4 mm of clay with a particle size of 5 mm
About 60% of clay having a particle size of 0% or less than 5 mm was obtained.
ｂ）次に、5mm以上の粒度のクレイを、砕石等からなる
下層の上部に約40mmの厚さで引きならし、転圧用ローラ
ーを用いて転圧した。b) Next, clay having a particle size of 5 mm or more was drawn on the upper part of the lower layer made of crushed stone or the like to a thickness of about 40 mm, and was rolled using a roller for rolling.
ｃ）一方、5mm以下の粒度のクレイには、シリカ、酸化
アルミニウム、酸化カルシウムを主成分とする水硬性結
合材を30％の割合で添加して、団粒化混練機で団粒化さ
せて、物性が劣化したクレイを良質のプレミックスクレ
イに再生させた。c) On the other hand, to clay having a particle size of 5 mm or less, a hydraulic binder containing silica, aluminum oxide, and calcium oxide as main components is added at a ratio of 30%, and the aggregate is kneaded with an agglomerating kneader. , Clay with deteriorated physical properties was regenerated into high quality premixed clay.
ｄ）最後に、再生させたプレミックスクレイを、表層に
約60mmの厚さで引きならし、転圧用ローラーを用いて転
圧して、全天候型クレイ舗装とした。d) Finally, the regenerated premixed clay was laid on the surface layer to a thickness of about 60 mm and rolled using a roller for rolling to obtain an all-weather clay pavement.
劣悪化した表層土（廃棄土）を有する屋外体育施設にお
いて、 ａ′）表層の廃棄土を約100mmの厚さで掘削した。な
お、掘削により生じた廃棄土は、搬出し、廃棄処分とし
た。At an outdoor gym with an aged surface soil (waste soil), a ') surface waste soil was excavated to a thickness of approximately 100 mm. The waste soil generated by excavation was taken out and disposed of.
ｂ′）良質真砂土60％と普通真砂土40％を混合したクレ
イをａ′）において掘削した量と同じ量だけ搬入し、下
層の上部に約100mmの厚さで引きならし、転圧用ローラ
ーを用いて転圧する方法により、クレイ舗装とした。b ') The amount of clay mixed with 60% of good quality sand sand and 40% of ordinary sand sand is carried in by the same amount as excavated in a'), and is laid on the upper part of the lower layer with a thickness of about 100 mm, and the roller for compaction is used. Clay pavement was made by the method of rolling using.
上記の実施例および比較例から得られた舗装物の性能比
較を行った結果、以下に示す内容が確認された。As a result of the performance comparison of the pavement obtained from the above-mentioned Examples and Comparative Examples, the following contents were confirmed.
実施例に記載され工程により得られた本発明の全天候型
クレイ舗装では、表層部分が水に融けない性質をもち、
団粒化結合させているので、雨が降っても表面がぬかる
まず、雨水と共に沈下することが少なく、沈下しても糊
状となって遮断層を形成することがなかった。冬季にお
いては、土中に凍る原因となる水分が少ないので、霜害
や雪害が少なく、また適度の保水性および透水性によっ
て、夏季においては水分を含んだ表層面が維持でき、埃
がたちにくいという特徴を示した。In the all-weather clay pavement of the present invention obtained by the process described in Examples, the surface layer has a property of not melting in water,
Since they are aggregated and bonded, the surface does not get wet even if it rains, and they do not settle with rainwater, and even when they settle, they do not form a pasty layer and form a blocking layer. In the winter, there is little water that causes freezing in the soil, so there is little frost damage or snow damage, and due to the appropriate water retention and water permeability, the surface layer containing water can be maintained in the summer, and dust is unlikely to stick. Characterized.
さらに、外見的には、土舗装そのものであり土の特有の
適度な弾性を有するので、使用感も優れたものであっ
た。また、廃棄土の処理を行う必要がなく、経済的にも
優れていた。Further, from the outside, the pavement itself has a proper elasticity peculiar to the soil, so that the feeling of use was excellent. Moreover, it was economically superior because it was not necessary to treat the waste soil.
一方、比較例の塗装方法においては、耐候性が本発明の
場合に比べて劣り、埃がたちやすく、霜害等が発生しや
すく、降雨時の排水が遅いなどの欠点があった。On the other hand, the coating method of the comparative example has drawbacks such as inferior weather resistance as compared with the case of the present invention, dust is liable to be formed, frost damage is likely to occur, and drainage is slow during rainfall.
しかも、比較例の方法では、掘削した廃棄土の処分が必
要であり、さらに土砂の搬入や搬出等の費用を要し、改
修費用全体としては、本発明の舗装方法に比べて約10〜
20％のコストアップとなった。Moreover, in the method of the comparative example, it is necessary to dispose of excavated waste soil, and further costs such as loading and unloading of earth and sand, and the overall repair cost is about 10 to 10% compared to the pavement method of the present invention.
The cost has been increased by 20%.
以上のように、本発明の舗装方法は、従来より行われて
きた表層土を入れ替える舗装方法に比べて、経済性の面
からも非常に優れ、性能においては、特に耐候性が著し
く改良されている等、非常に適した全天候型クレイ舗装
方法であることが示された。As described above, the pavement method of the present invention is very excellent in terms of economy as compared with the pavement method of replacing the surface soil that has been conventionally performed, and in terms of performance, the weather resistance is remarkably improved. It was shown to be a very suitable all-weather clay paving method.
本発明の全天候型クレイ舗装方法では、改修用の材料に
廃棄土を使用し、これを再利用するので、従来方法のよ
うな入れ替え用の良質の真砂土が不要であり、低価格で
工事を行うことができる。しかも、従来方法で問題とな
っていた廃棄土の処理が不要で、各工程を現地において
実施でき、土砂の搬入や搬出が減少するので工事期間の
短縮が量られ、トラックによる周囲の環境への悪影響も
少ない。In the all-weather clay pavement method of the present invention, waste soil is used as a material for refurbishment and is reused.Therefore, good quality sand sand soil for replacement as in the conventional method is unnecessary, and construction can be performed at a low cost. It can be carried out. Moreover, it is not necessary to treat the waste soil, which has been a problem with the conventional method, and each process can be carried out locally, and the loading and unloading of sediment is reduced, so the construction period can be shortened and the surrounding environment by the truck can be reduced. Has little adverse effect.
さらに、本発明により得られる全天候型クレイ舗装表層
面は、夏季には表層面が安定しているので埃がたたず、
冬季には霜害、凍結が少なく、降水時には排水が早い等
の優れた性能を有する。しかも、耐水性、透水性、弾力
性および保水性に優れるだけでなく、一年を通して保守
に手間がかからない。また、篩い分けの工程を経るため
に、均一な粒度の表層面が得られ、競技種目に応じて水
硬性結合材の添加量を変えることで表層土の堅さを任意
に制御することもできる。Furthermore, the all-weather clay pavement surface layer surface obtained by the present invention has no dust because the surface layer surface is stable in summer,
It has excellent performance such as little frost damage and freezing in winter and quick drainage during precipitation. Moreover, not only is it excellent in water resistance, water permeability, elasticity and water retention, but it does not require maintenance throughout the year. Further, since the sieving process is performed, a surface layer surface having a uniform particle size can be obtained, and the hardness of the surface soil can be arbitrarily controlled by changing the addition amount of the hydraulic binder according to the competition event. .
第１図は、表層が劣化した従来のクレイ舗装の断面構造
図、 第２図は、本発明の方法により改修された全天候型クレ
イ舗装の断面構造図である。 （１）……表層（真砂土など） （２）……下層（砕石など） （３）……暗渠 （４）……遮断層 （５）……単粒砕石 （６）……透水管 （７）……プレミックスクレイ層 （８）……粒度の大きなクレイ層FIG. 1 is a sectional structural view of a conventional clay pavement having a deteriorated surface layer, and FIG. 2 is a sectional structural view of an all-weather clay pavement modified by the method of the present invention. (1) …… Surface layer (mass sand, etc.) (2) …… Lower layer (crushed stone, etc.) (3) …… Undrain (4) …… Block layer (5) …… Single-grain crushed stone (6) …… Permeable pipe ( 7) …… Premix clay layer (8) …… Large grain clay layer
Claims (3)
装において、 ａ）自然環境の影響により物性が劣化した表層部分のク
レイを掘削し、上記表層部分のクレイを粒度の小さなク
レイと粒度の大きなクレイとに篩い分ける工程 ｂ）上記粒度の大きなクレイを、下層の上部に引きなら
して転圧する工程 ｃ）上記粒度の小さなクレイに、水硬性結合材を添加し
て団粒化させ、プレミックスクレイとする工程 ｄ）上記プレミックスクレイを、表層に引きならして転
圧する工程 により構成されることを特徴とする全天候型クレイ舗装
方法。1. A clay pavement consisting of three layers of surface layer / lower layer / underdrain: a) excavating the clay of the surface layer whose physical properties have deteriorated due to the influence of the natural environment. B) a step of sieving the above-mentioned large-sized clay into the upper part of the lower layer and rolling it c) a hydraulic binder is added to the above-mentioned small-sized clay to agglomerate, Premixed clay step d) An all-weather clay paving method characterized by comprising the step of rolling the premixed clay onto the surface layer and rolling it.
ウム、酸化カルシウムを主成分とするものであって、上
記の粒度の小さなクレイに対して20〜40％の割合で添加
されることを特徴とする請求項１記載の舗装方法。2. The hydraulic binder is mainly composed of silica, aluminum oxide and calcium oxide, and is added in a ratio of 20 to 40% to the clay having a small particle size. The paving method according to claim 1.
以下の粒度のクレイと5mm以上の粒度のクレイとに篩い
分ける工程であることを特徴とする請求項１記載の舗装
方法。3. In the step a), the surface clay portion is 5 mm.
The pavement method according to claim 1, which is a step of sieving into a clay having the following particle size and a clay having a particle size of 5 mm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP481690A JPH0674567B2 (en) | 1990-01-11 | 1990-01-11 | Paving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP481690A JPH0674567B2 (en) | 1990-01-11 | 1990-01-11 | Paving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03208903A JPH03208903A (en) | 1991-09-12 |
| JPH0674567B2 true JPH0674567B2 (en) | 1994-09-21 |
Family
ID=11594259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP481690A Expired - Lifetime JPH0674567B2 (en) | 1990-01-11 | 1990-01-11 | Paving method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674567B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102572936B1 (en) * | 2023-01-03 | 2023-08-31 | 에이치그라운드 주식회사 | Clay court for sports facilities |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138613A (en) * | 2008-12-12 | 2010-06-24 | Hetsugi Doboku Ryokuchi Kensetsu Kk | Paving material and method for manufacturing the same |
| CN104878678A (en) * | 2015-06-04 | 2015-09-02 | 深圳市华威环保建材有限公司 | Construction method for water-permeable and water-retaining water-permeable pavement structure |
-
1990
- 1990-01-11 JP JP481690A patent/JPH0674567B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102572936B1 (en) * | 2023-01-03 | 2023-08-31 | 에이치그라운드 주식회사 | Clay court for sports facilities |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03208903A (en) | 1991-09-12 |
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