JP2547516B2 - Pavement structure, plate member for pavement, and pavement construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement structure, a pavement plate-shaped member and a pavement construction method, and in particular, when a concrete plate is coated with an asphalt mixture on a road, a parking lot or the like, the concrete plate has a grain surface. The present invention relates to a pavement structure for preventing cracks (reflection cracks) from occurring in the asphalt layer, a pavement plate member, and a pavement method.

[0002]

BACKGROUND ART Conventionally, roads have been mainly paved by concrete, but it has been difficult to repair concrete because it takes a long time to cure it and many construction machines complicate the work. For this reason, in recent years, roads covered with an asphalt layer, that is, a road layer laminated with an asphalt mixture that is easy to repair because it takes only 2-3 hours for curing on a concrete slab and is easy to construct, are common. Became.

[0003]

By the way, since concrete expands and contracts greatly with respect to temperature changes, joints are usually provided with joints at regular intervals to absorb expansion and contraction. For this reason, if the asphalt mixture is coated on the concrete slab, cracks (reflection cracks) will occur in the asphalt layer just above the joints and cracks where the expansion and contraction of the concrete slab is large within 1 to 2 years after construction, causing a problem. Was there. In order to prevent this cracking, in recent years, on the joints and cracks of the concrete slab, a method of coating a bituminous sheet or synthetic fiber and then coating with an asphalt mixture has been attempted. There is a problem in that the structure and construction method for preventing the occurrence of cracks have not yet been established, merely by delaying the generation time somewhat.

An object of the present invention is to reduce the occurrence of cracks in the asphalt coating layer, to delay the time of occurrence of cracks, to extend the period until re-repair, and to prolong the life of pavement and pavement boards. To provide a strip-shaped member and a pavement construction method.

[0005]

As a result of earnest research, the inventors of the present invention have found that the cause of cracks is the horizontal displacement of the concrete slab due to expansion and expansion of the concrete slab caused by temperature change, and the concrete slab caused by the vehicle traveling on the road. The asphalt layer sinks in the joints and cracks of the concrete and is found to be in the vertical displacement (bending fatigue) that occurs due to repeated restoration, and the bending, compression, and shear stresses caused by these displacements are directly received and relaxed. The present invention was created to prevent the occurrence of cracks by interposing members that can be dispersed and transmitted in layers.

More specifically, the pavement structure of the present invention is a pavement structure in which the surface of a concrete slab is coated with an asphalt mixture, and a bituminous sheet is placed on the concrete slab so as to cover the joints and cracks of the concrete slab. Consists of
A crack prevention sheet is provided on this crack prevention sheet.
Both ends of the concrete slab sandwiching the joints and cracks
Side extends to the outside of the crack prevention sheet
The resin mortar layer is provided in close contact with the upper surface of the slab, and the resin mortar layer and the concrete slab are covered with an asphalt layer. At this time, bitumen
The sheet is made by impregnating non-woven fabric with asphalt, etc.
Composed of. Further, the pavement plate-like member of the present invention is a pavement plate-like member used in a pavement structure in which the surface of a concrete slab is coated with an asphalt mixture, and the width is larger than the width dimension of the joints and cracks of the concrete slab. A crack prevention sheet having a dimension and made of a bituminous sheet,
It is laminated on the crack prevention sheet and has a crack prevention sheet.
Both sides of the crack prevention sheet orthogonal to the width direction of the
And a resin mortar layer extended to the outside of the.

Further, the first pavement construction method of the present invention is a pavement construction method in which the surface of a concrete slab is covered with an asphalt mixture, and the width of joints and cracks of the concrete slab is
Having a width dimension larger than the dimension and consisting of bituminous sheet
Crack prevention sheet and stack on this crack prevention sheet
Both ends that are layered and orthogonal to the width direction of the crack prevention sheet
Resin whose side is extended to the outside of the crack prevention sheet
A plate-shaped member consisting of a mortar layer is manufactured in advance and
Clamp the plate-shaped member on the joints and cracks of the concrete plate.
The rack prevention sheet covers the joints and cracks and
Both ends of the resin mortar layer are closely packed on the concrete slab top surface.
And arranged to contact, it is characterized in that the predetermined thickness of the coating asphalt layer on the plate-like member and the concrete <br/> preparative plate. In addition, the second paving method of the present invention is
A pavement method for covering the surface of a concrete slab with an asphalt mixture, in which a crack prevention sheet consisting of a bituminous sheet is placed on the joints and cracks of the concrete slab ,
Before placing resin mortar on this crack prevention sheet,
Both ends of the concrete slab sandwiching the joints and cracks
Concrete extended to the outside of the crack prevention sheet
A resin mortar layer is formed in close contact with the upper surface of the plate, and the asphalt layer is coated on the resin mortar layer and the concrete plate with a predetermined thickness.

At this time, the resin mortar layer composed of the plate-shaped member or the like is made into a concrete slab by being inclined so that at least both ends in the width direction of joints and cracks are gradually lowered toward the ends. It is preferable that the step is not formed. Further, it is preferable to fill the joints and cracks of the concrete slab with a joint filler such as blown asphalt so that no gap is formed between the joint and the resin mortar layer.

Furthermore, not only the lower surface of the formed resin mortar layer by the plate-like member or the like, it is preferable to dispose the bitumen sheet formed of such as by impregnating the asphalt nonwoven fabric to the top surface.

[0010]

In the present invention as described above, since the resin mortar layer is provided on the joints and cracks of the concrete slab and the asphalt layer is coated on the resin mortar layer and the concrete slab, the expansion and contraction of the concrete slab and the vehicle Bending, compression, and shear stress due to horizontal and vertical displacements applied to the asphalt layer by the load of the above are alleviated by the resin mortar layer and are dispersed and transmitted to the asphalt layer, preventing cracks in the asphalt layer. . Also, conc
Resin mortar layer on the joints and cracks of the REET plate
Place a crack prevention sheet consisting of bitumen sheet underneath
As a result, the end of the concrete slab (joint part) will change in temperature.
Even if it expands and contracts due to aging, its movement is transmitted directly to the resin mortar layer.
And therefore not transmitted to the asphalt layer
Therefore, cracks caused by expansion and contraction of concrete slabs
Even more effectively prevented. In addition, the crack prevention sheet
The gap between the concrete slab and the resin mortar layer
Since it can be eliminated, stress is not applied to the resin mortar layer.
Even if the resin mortar does not bend and break
It is. Furthermore, a crack prevention sheet consisting of a bituminous sheet
However, since the stress can be relieved, the resin mortar layer
And the crack prevention sheet has a two-layer structure
Greater impact effect and more reliable cracking
To be prevented.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional structure of a road to which the present invention is applied. Joints 2 are formed on the concrete slab 1 of the road at regular intervals, for example, every 10 m, and when the concrete slab 1 expands and contracts due to a temperature change, the joint 2 absorbs the change. The joint 2 portion is filled with a joint filler 3 having elasticity so as not to prevent expansion and expansion of the concrete slab 1, such as blown asphalt.

On the joint 2 of the concrete slab 1, a plate member 5 for paving is arranged. In addition, the pavement plate member 5
A crack prevention sheet 6 extending from the upper surface of the plate member 5 to the upper surface of the concrete slab 1 is bonded to the upper surface of the. The crack prevention sheet 6 and the concrete slab 1 are covered with an asphalt layer 7 made of an asphalt mixture in which asphalt is mixed with sand or crushed stone. Further, as shown in FIG. 2, the paving plate-shaped member 5 is composed of a crack prevention sheet 10 and a resin mortar layer 11 made of resin mortar.

Since the crack preventing sheets 6 and 10 are both made of a non-woven fabric impregnated with asphalt, they are flexible and easy to fit into the concrete slab 1 and the asphalt layer 7, and are easy to handle and construct. It is said to have a large effect and can absorb impact, and it is also tough, has excellent tensile strength and elongation, and has a waterproof effect.

Further, since the resin mortar layer 11 is made of resin mortar, the resin mortar layer is highly flexible and has appropriate compression and tensile strength. It can follow movements such as shearing, bending, compression, and tensile stress of the part, has durability, and has an effect of relaxing these stresses.

As shown in FIGS. 1 and 2, the paving plate-like member 5 composed of the crack prevention sheet 10 and the resin mortar layer 11 having the above-mentioned characteristics, as shown in FIGS.
A is inclined so as to gradually decrease toward the end portion, and is configured so that when placed on the concrete slab 1, there is no step between the concrete slab 1 and the plate member 5. Then, a primer is applied to the lower surface of both ends 5A of the plate-shaped member 5 where the crack prevention sheet 10 is not arranged, and the primer is adhered to the concrete slab 1. On the other hand, the crack prevention sheet 10 is not adhered to the concrete slab 1. Therefore, even if the joint 2 portion of the concrete slab 1 moves due to expansion and contraction, the concrete slab 1 can freely move with respect to the sheet 10, and therefore the movement of the concrete slab 1 does not affect the plate member 5.

The crack prevention sheet 6 disposed on the plate member 5 and the concrete slab 1 is also adhered by a primer applied to the plate member 5 and the concrete slab 1.

In this embodiment, the plate-like member 5 is prepared in advance in a factory or the like. That is, the crack prevention sheet 10 is placed in a mold formed to have a predetermined size.
Then, the resin mortar is poured into the resin mortar layer 11 to form the resin mortar layer, and the resin mortar is cured for a predetermined time to prepare the required number of plate-shaped members 5.

Next, the plate-like member 5 is carried to the site where the paving work is to be performed, and the paving work is performed in the following procedure. At this time, when repairing a road on which asphalt is already paved, the asphalt layer is shaved to expose at least the joints 2 and cracks of the concrete slab 1.

Next, when the joint filler 3 filled in the joints 2 is covered, the joint filler 3 is newly filled and repaired. After that, a primer is applied to the lower surface of both ends 5A of the plate member 5, and as shown in FIG. 3 (A), the plate member 5 is installed so that the sheet 10 covers the joint 2 portion, and both ends 5A It adheres on the concrete slab 1 at the primer application part.

Then, a primer is applied from the upper surface of the plate member 5 to the upper surface of the concrete slab 1, and a crack prevention sheet 6 is laid and adhered as shown in FIG. 3 (B). Next, a primer for the surface layer is applied on the crack prevention sheet 6, and the asphalt layer 7 is applied as shown in FIG. 3 (C).
And lay it evenly and roll the surface to complete the pavement.

According to this embodiment, since the paving plate-like member 5 including the crack prevention sheet 10 and the resin mortar layer 11 is arranged on the joint 2 of the concrete slab 1, the concrete slab due to the temperature change. Even if stress is applied due to expansion and contraction of No. 1 or bending due to vehicle passage, these movements and forces are not directly transmitted to the asphalt layer 7, but are relaxed and dispersed by the plate member 5 and transmitted. It is possible to prevent cracking of the asphalt layer 7. Therefore, the period until the next repair is required can be extended, and the number of repairs and the cost can be reduced. In particular, the resin mortar layer 11 has appropriate compression and tensile strength and therefore has durability against stress, and further has appropriate flexibility, such as shearing, bending, compression, and tensile stress of the joint 2 part. Since it has a stress relaxation effect by being able to follow the movement of, it is possible to reliably prevent the occurrence of cracks.

Further, the plate member 5 is provided with a crack prevention sheet 10, and since this sheet 10 is not adhered to the concrete slab 1, expansion and contraction of the concrete slab 1 causes a plate-like joint 2 part to be moved. It can be freely moved with respect to the member 5. Therefore, concrete slab 1
Almost no change in expansion and contraction is transmitted to the plate-like member 5 and the asphalt layer 7, and it is possible to prevent cracks that have conventionally occurred due to such changes. In addition, resin mortar
A crack prevention sheet 1 between the layer 11 and the concrete slab 1
Since 0 is arranged, the resin mortar layer 11 and concrete
It is possible to prevent gaps between the printing plates 1 and
Even if stress is applied to the fat mortar layer, the resin mortar bends
It is possible to prevent breakage.

Further, the crack preventing sheets 6 and 10 are
Since a non-woven fabric impregnated with asphalt is used, it is flexible and easy to fit into the concrete slab 1, the asphalt layer 7, and the resin mortar layer 11, and can be easily handled and constructed. Further, since the cushioning effect is large, the toughness is excellent, and the tensile strength and the elongation are excellent, the impact due to each stress or the like can be mitigated by each of the sheets 6 and 10, and the expansion and contraction of the concrete slab 1 can be flexibly responded. be able to. Furthermore, since each of the sheets 6 and 10 also has a waterproof effect, it is possible to prevent the resin mortar layer 11 and the joint 2 of the concrete slab 1 from being corroded by rainwater or the like.

Further, in this embodiment, since both end portions 5A of the plate member 5 are formed obliquely, there is almost no step with the concrete slab 1 and cracks are not generated from both end portions 5A of the plate member 5. Can be suppressed. Further, since the crack prevention sheet 6 extending from both ends 5A of the plate member 5 to the concrete slab 1 is provided, even if the plate member 5 and the concrete slab 1 move or stress is applied to the asphalt layer 7. It is possible to cushion with the sheet 6, and it is possible to more reliably prevent the occurrence of cracks from both end portions 5A of the plate member 5.

The present invention is not limited to the above-mentioned embodiments, but includes modifications and improvements within a range in which the object of the present invention can be achieved. For example, the present invention is not limited to the repair of a road already paved with asphalt, but can be applied to the case of newly coating the concrete slab 1 with the asphalt layer 7. Further, the present invention can be widely applied not only to roads but also to a portion for covering the concrete plate 1 with the asphalt layer 7 such as a parking lot, a river embankment, and an outer wall of a building.

In the case of repairing the already paved asphalt layer 7, the present invention is applied by removing the cracked portion of the asphalt layer 7, that is, the joint 2 of the concrete slab 1 and the asphalt layer 7 of only the cracked portion. Alternatively, the asphalt layer 7 on the concrete slab 1 may be completely peeled off, the pavement structure of the present invention may be applied to the joint 2 portion, and a new asphalt layer 7 may be coated on the other portion to repair it. At this time, when the filler in the joint on the pavement surface is missing, it is preferable that the joint filler 3 is filled so that no gap is formed between the joint plate and the paving plate member 5.

Further, in the above-described embodiment, the pavement plate-shaped member 5 prepared in advance was carried to the site for the work, but a formwork was assembled on the site and the resin mortar was poured to form the mortar layer 11. Good. If the mortar layer 11 is produced on-site in this manner, there is an advantage that the mortar layer 11 having various sizes and shapes can be produced according to the situation at the site. However, if it is prepared in advance as in the above-mentioned embodiment, there is also an effect that the curing time of the resin mortar on site is unnecessary and the paving work can be performed in a short time.

Further, the crack preventing sheet 6 on the upper surface side of the plate-like member 5 is not necessarily required, it may be installed upon necessity. However, the provision of the sheet 6 improves the cushioning effect and the followability, and in particular, it is possible to effectively prevent the occurrence of cracks from both end portions 5A of the plate-shaped member 5, and to asphalt at a high temperature of 150 to 180 degrees. Since the sheet 6 has a heat insulating property when the layer 7 is laid, there is also an effect that the deterioration of the resin mortar layer 7 can be prevented.

Further, the concrete slab 1 and the plate member 5
Although the plate-shaped member 5 and the crack prevention sheet 6 and the crack prevention sheet 6 and the asphalt layer 7 were adhered by a primer, respectively, they may be simply placed without using a primer. However, when the asphalt layer 7 is laid by using a machine such as a finisher, the plate-shaped member 5 may move, so that the plate-shaped member 5 may be bonded with a primer, or even if it is moved a little from the joint 2 portion of the concrete slab 1. It is preferable to make it in a size that does not come off. Further, in the above-mentioned embodiment, the crack prevention sheet 10
Was not adhered to the concrete slab 1, but it may be adhered to the concrete slab 1 by a primer. In this case, there is also an effect that there is no possibility of forming a gap between the concrete slab 1 and the sheet 10.

Further, the shape and size of the plate-like member 5 may be set appropriately in practice. For example, in the above-described embodiment, both end portions 5A of the plate-shaped member 5 are configured to be inclined, but the upper surface of the plate-shaped member 5 may be curved or the same as a general plate having a rectangular vertical section. It may have a shape. However, if there is no step between the end 5A of the plate member 5 and the concrete slab 1 as in the above-described embodiment, there is an effect that cracks from the end can be surely prevented. Further, the size of the mortar layer 11 constituted by the plate-shaped member 5 and the like is not particularly limited, but the asphalt layer 7
When using a machine, it is preferable that the length be 1 cm or less so as not to hinder the operation of the machine. On the other hand, if the thickness is too thin, it tends to break and sufficient strength cannot be obtained. Further, when the plate-shaped member 5 is manufactured in advance in a factory or the like, it is preferable to set the width dimension and the length dimension to a size that is easy to transport and handle.

The asphalt layer 7 on the mortar layer 11 preferably has a thickness of 3 cm or more because if it is too thin, the strength is insufficient and cracks occur. Therefore, when ruts are generated on the road and only the joints 2 of the concrete slab 1 are to be repaired, asphalt is rubbed on the ruts before and after the rubbing.
It is desirable to ensure the thickness of the asphalt layer 7 on top of the 1. Further, as the asphalt layer 7, a generally used asphalt mixture may be used. However, depending on each region such as roads with heavy traffic or cold snowy regions, flexibility and bending may be added by adding rubber or thermoplastic elastomer. A modified asphalt having improved strength may be used.

Next, an experimental example in which the present invention is applied to road repair will be described. First, the pavement plate-shaped member 5 was prepared in advance in a factory. The plate member 5 is composed of coarse sand 60% and fine sand 3
Utilizing a resin mortar in which an aggregate mixed with 0% and stone sand 10% and a binder are mixed in a predetermined ratio,
After arranging the crack prevention sheet 10 in a predetermined mold, the resin mortar was cast and the upper surface width dimension was 110 mm, the lower surface width dimension was 150 mm, the length was 800 mm, and the thickness was 9 mm. In addition, as the binder, 10 as the epoxy main agent, ADEKA RESIN EP-4603 manufactured by Asahi Denka Kogyo Co., Ltd.
For 0 part, 65 parts of a trade name ADEKA HARDNER EH-236-30W manufactured by the same company was used as a curing agent.

Next, the strength characteristics of the resin mortar layer 11 were examined depending on the mixing ratio of the aggregate and the binder. However, when the above aggregate and binder are used, the amount of binder is 15
When it is less than 16%, the adhesive force of the resin mortar disappears, while when it is more than 16%, the binder floats up. Therefore, an experiment was carried out with the resin binder amounts of 15% and 16%. The experimental items are shown in Table 1, and the experimental results are shown in FIGS.

[0034]

[Table 1] As can be seen from these experimental results, the compressive strength, the tensile strength, the bending strength, and the flexure amount did not change so much when the resin binder amount was set to 15% and 16%, but there was a difference in the shrinkage rate and the elongation rate. In particular, since the elongation at low temperature is larger when the binder amount is 16%, it is preferable that the binder amount is 16% when the joint 2 is wide. Therefore, in this experimental example, the amount of binder is 16
% Resin mortar was used. Since this mixing ratio changes depending on the type of aggregate and binder, it is necessary to set it appropriately.

Next, the quality characteristics of the crack prevention sheets 6 and 10 were examined. As a result, the sheets 6 and 10 in which the nonwoven fabric was impregnated with asphalt had the characteristics shown in Table 2.

[Table 2]

By the way, the expansion and contraction amount of the concrete slab 1 due to the temperature change is such that the coefficient of thermal expansion of the concrete is 0.000010, and the annual temperature change of the concrete slab 1 is 40 ° C. (+4
0 to 0 ° C), and if you allow 20% as a margin,

## EQU1 ## ΔL = 40 ° C. × 0.000010 × L (m) × 1.2 = 0.48L (mm) Here, ΔL is the design expansion / contraction amount, and L is the length of the concrete slab 1 (horizontal joint interval).

Therefore, the calculation of the design expansion / contraction amount with respect to the length of each concrete slab 1 is as shown in Table 3.

[Table 3] On the other hand, the expansion and contraction characteristics of the resin mortar with the binder amount of 16% are about 12% both in the shrinkage ratio at 40 ° C. and the elongation ratio at 0 ° C. as shown in FIGS. here,
Considering the safety factor, if the expansion / contraction characteristic is 10% and the length of the movable part, that is, the width dimension of the crack prevention sheet 10 of the plate-like member 5 is 11 cm, the allowable expansion / contraction amount in the plate-like member 5 is
Since it is mm, it can be understood from comparison with Table 3 that the concrete slab 1 can be applied when the joint spacing is 20 m or less.

The plate member 5 having such characteristics was carried to the site, and the cracked portion of the asphalt was repaired by the pavement structure of the present invention. As a comparative example, concrete slab 1
An untreated pavement structure in which the asphalt layer 7 was directly laid on top and a pavement structure in which only the crack prevention sheet 6 was placed on the concrete slab 1 and the asphalt layer 7 was laid were used.

When such a test construction was carried out, two short cracks were generated in the untreated area after about six and a half months, and a crack with a total extension of 1 m was formed after one year and six months. Also, in the place where only the seat is installed,
After about eight and a half months, one short crack was generated, and after one year and six months, it became a crack of about 50 to 70 cm.

On the other hand, at the location where the pavement structure of the present invention is applied, no visible cracks are formed even after 1 year and 6 months, and the effect of the present invention can be confirmed and its usefulness is clear. Became.

[0041]

According to the present invention as described above, it is possible to reduce the occurrence of cracks in the asphalt coating layer, delay the time of occurrence, and prolong the period until re-repair,
This has the effect of extending the life of the pavement.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a pavement structure of the present invention.

FIG. 2 is a perspective view showing an embodiment of the paving plate-like member of the present invention.

FIG. 3 is a diagram showing an example of a paving method of the present invention.

FIG. 4 is a graph showing the compressive strength of a resin mortar layer in an experimental example of the present invention.

FIG. 5 is a graph showing a shrinkage ratio of a resin mortar layer in an experimental example of the present invention.

FIG. 6 is a graph showing the tensile strength of a resin mortar layer in an experimental example of the present invention.

FIG. 7 is a graph showing the elongation percentage of a resin mortar layer in an experimental example of the present invention.

FIG. 8 is a graph showing bending strength of a resin mortar layer in an experimental example of the present invention.

FIG. 9 is a graph showing the amount of deflection of a resin mortar layer in an experimental example of the present invention.

[Explanation of symbols]

 1 Concrete slab 2 Joint 3 Joint filler 5 Pavement plate member 6 Crack prevention sheet 7 Asphalt layer 10 Crack prevention sheet 11 Mortar layer

Claims (4)

(57) [Claims] 1. A pavement structure in which the surface of a concrete slab is coated with an asphalt mixture, and a crack prevention sheet comprising a bituminous sheet provided on the concrete slab so as to cover joints and cracks of the concrete slab , and
Is provided on the crack prevention sheet of the
Cracks are prevented on both end sides of the joints and cracks of the board.
It extends to the outside of the stop sheet
A pavement structure comprising: a resin mortar layer in contact with the resin mortar layer; and an asphalt layer covering the resin mortar layer and the concrete slab. 2. A pavement plate member used in a pavement structure in which the surface of a concrete slab is coated with an asphalt mixture, the bite bite sheet having a width dimension larger than that of a joint or a crack portion of the concrete slab. Consisting of
And anti-cracking sheet and laminated on this crack-preventing sheet
And both sides of the crack prevention sheet, which are orthogonal to the width direction, are in front
A plate member for paving , comprising a resin mortar layer extended to the outside of the crack prevention sheet . 3. A pavement construction method for coating the surface of a concrete slab with an asphalt mixture, which has a width dimension larger than that of joints and cracks of the concrete slab.
A crack prevention sheet consisting of a bituminous sheet and this crack
The width of the crack prevention sheet laminated on the prevention sheet
Both sides orthogonal to the direction are outside of the crack prevention sheet
A plate-shaped member consisting of a resin mortar layer extended to
Manufactured on the joints and cracks of concrete slabs.
The plate-like member is attached to the joints and
The resin mortar layer on both ends of the resin mortar layer.
Pavement construction method and disposed close to the cleat plate top surface, characterized by coating the asphalt layer a predetermined thickness on the plate-like member <br/> and on the concrete plate. 4. A pavement construction method for coating the surface of a concrete slab with an asphalt mixture, which comprises a crack prevention system comprising a bituminous sheet on the joints and cracks of the concrete slab.
Of the concrete slab and place the resin mortar on the crack prevention sheet to remove the joints and cracks of the concrete slab.
Both ends sandwiched are extended to the outside of the crack prevention sheet
A pavement construction method characterized in that a resin mortar layer is formed in close contact with the upper surface of the concrete slab, and the asphalt layer is coated on the resin mortar layer and the concrete slab to a predetermined thickness.