JPS6215501B2 - - Google Patents
Info
- Publication number
- JPS6215501B2 JPS6215501B2 JP1628779A JP1628779A JPS6215501B2 JP S6215501 B2 JPS6215501 B2 JP S6215501B2 JP 1628779 A JP1628779 A JP 1628779A JP 1628779 A JP1628779 A JP 1628779A JP S6215501 B2 JPS6215501 B2 JP S6215501B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- water repellent
- solvent
- bentonite
- silicone
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 230000002940 repellent Effects 0.000 claims description 13
- 239000005871 repellent Substances 0.000 claims description 13
- 238000004078 waterproofing Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 11
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
（産業上の利用分野）
本発明はセメントモルタルなどに添加して、そ
れの硬化体に防水性を付与する粉末状防水剤に関
する。
（従来の技術）
これまでの防水性モルタルは、川砂などの骨材
に撥水剤を被覆または含浸させて、セメントと混
合していた。しかし、骨材の粒径が大きいため、
セメント部分まで防水性を得ることが不完全であ
り、モルタル全体としての、防水性には劣つてい
た。
（発明が解決しようとする問題点）
防水性モルタルとしては、養生後の24時間水中
浸漬による吸水率が10％以下のものが望まれてい
た。
（問題点を解決するための手段及び作用）
本発明は、ベントナイトに溶剤型シリコーン撥
水剤を添加し、乾燥したことを特徴とする粉末状
防水剤である。ベントナイトは、膨潤性、粘性、
粘結性など主構成鉱物のモンモリロナイトに起因
する特異の性質をもつた粘土鉱物であり、通常微
細な粉末状態で使用される。本発明の防水剤は、
このベントナイトにケロシンや有機溶剤を溶剤と
した有機シリコーンで構成された溶剤型シリコー
ンをベントナイトに添加して、乾燥することによ
り得られる。
（作用）
ベントナイトは液状撥水剤の吸収性が大きく、
容易に乾燥できるので、撥水剤を均一に分散させ
ることができる。
（実施例）
溶剤型シリコーンとして有機シロキサンを主成
分とする油性タイプのもので、固型分が80％のも
の（溶剤型シリコーン撥水剤Ａ）と固型分が50％
のもの（溶剤型シリコーン撥水剤Ｂ）を用いて、
本発明の粉末状防水剤を作成した。本発明のもの
と比較するため、パラフイン系の固型分45％のも
の（パラフイン系撥水剤Ａ）と固型分40％のもの
（パラフイン系撥水剤Ｂ）及び、水溶性のシリコ
ーン撥水剤（固型分50％）、ステアリン酸カルシ
ウムなどをベントナイトに添加して表−１のよう
な粉末状防水剤を作成した。
(Field of Industrial Application) The present invention relates to a powdery waterproofing agent that is added to cement mortar and the like to impart waterproofness to the hardened product thereof. (Prior Art) Conventional waterproof mortar has been made by coating or impregnating aggregate such as river sand with a water repellent and mixing it with cement. However, because the particle size of the aggregate is large,
It was incomplete to obtain waterproofness down to the cement part, and the waterproofness of the mortar as a whole was poor. (Problems to be Solved by the Invention) It has been desired that a waterproof mortar has a water absorption rate of 10% or less when immersed in water for 24 hours after curing. (Means and effects for solving the problems) The present invention is a powdery waterproofing agent characterized by adding a solvent-type silicone water repellent to bentonite and drying it. Bentonite has swelling, viscosity,
It is a clay mineral with unique properties such as caking properties due to its main constituent mineral, montmorillonite, and is usually used in a fine powder form. The waterproofing agent of the present invention is
It is obtained by adding to this bentonite a solvent-type silicone made of organic silicone using kerosene or an organic solvent as a solvent, and drying the bentonite. (Function) Bentonite has high absorbency of liquid water repellent,
Since it can be easily dried, the water repellent can be uniformly dispersed. (Example) An oil-based solvent-based silicone containing organic siloxane as its main component, with a solids content of 80% (solvent-based silicone water repellent A) and a solids content of 50%.
Using (solvent type silicone water repellent B),
A powdered waterproofing agent of the present invention was prepared. For comparison with those of the present invention, a paraffin-based water repellent with a solid content of 45% (paraffin-based water repellent A), a water-soluble silicone water repellent with a solid content of 40% (paraffin-based water repellent B), and a water-soluble silicone water repellent were prepared. A water agent (solid content: 50%), calcium stearate, etc. were added to bentonite to create a powdered waterproofing agent as shown in Table 1.
【表】【table】
【表】
これらの粉末状防水剤とシリコーン粉末及びス
テアリン酸カルシウムを用いて、表−２のような
添加率のセメントモルタル試験体を作成した。[Table] Using these powdered waterproofing agents, silicone powder, and calcium stearate, cement mortar test specimens were prepared with addition rates as shown in Table 2.
【表】
これらの試験体は、５日間空気中で養生したあ
と24時間105℃の乾燥器で乾燥して水中に浸漬
し、１時間後、５時間後、及び24時間経過後の吸
水率を測定した。
（発明の効果）
その結果は表−３のとおりであり、本発明に係
る粉末状防水剤以外の防水剤を添加した試料の水
中24時間経過後の吸水率は10％以上あり、無添加
のものに比較して吸水率の減少が５％までの防水
効果しかない。一方、本発明に係る粉末状防水剤
はベントナイトと溶剤型シリコーン撥水剤の相乗
作用により吸水率の減少が７％以上の防水効果を
示し、それらを添加した試料No.４と試料No.５の吸
水率は、どの浸漬時間のものを比較してもその他
のものより著しく小さな値となつており、その防
水性能は従来品にない効果を得られるものであ
る。[Table] These test specimens were cured in the air for 5 days, dried in a dryer at 105℃ for 24 hours, and immersed in water.The water absorption rates were measured after 1 hour, 5 hours, and 24 hours. It was measured. (Effects of the invention) The results are shown in Table 3, and the water absorption rate of samples to which waterproofing agents other than the powdered waterproofing agent of the present invention were added after 24 hours in water was 10% or more, and that of samples without additives was 10% or more. It has a waterproofing effect that reduces water absorption by only 5% compared to other materials. On the other hand, the powdered waterproofing agent according to the present invention showed a waterproofing effect with a decrease in water absorption of 7% or more due to the synergistic effect of bentonite and the solvent-based silicone water repellent, and Sample No. 4 and Sample No. The water absorption rate of the product is significantly smaller than that of the other products regardless of the immersion time, and its waterproof performance is an effect not found in conventional products.
Claims (1)
加し、乾燥したことを特徴とする粉末状防水剤。1. A powdered waterproofing agent characterized by adding a solvent-type silicone water repellent to bentonite and drying it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1628779A JPS55109251A (en) | 1979-02-14 | 1979-02-14 | Powdery water repellant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1628779A JPS55109251A (en) | 1979-02-14 | 1979-02-14 | Powdery water repellant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109251A JPS55109251A (en) | 1980-08-22 |
| JPS6215501B2 true JPS6215501B2 (en) | 1987-04-08 |
Family
ID=11912326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1628779A Granted JPS55109251A (en) | 1979-02-14 | 1979-02-14 | Powdery water repellant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55109251A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63252949A (en) * | 1987-04-07 | 1988-10-20 | 旭硝子株式会社 | Inorganic hydraulic composition |
| FR2789679B1 (en) * | 1999-02-12 | 2001-03-30 | Lafarge Platres | PREFABRICATED PLASTER CONSTRUCTION ELEMENT HAVING WATER RESISTANCE |
| JP5536530B2 (en) * | 2010-05-10 | 2014-07-02 | 電気化学工業株式会社 | Swellable self-healing cement admixture and cement composition |
-
1979
- 1979-02-14 JP JP1628779A patent/JPS55109251A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55109251A (en) | 1980-08-22 |
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