JP2016190766A - Injection material for semiflexible paving and semiflexible paving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection material for semiflexible paving having excellent freeze-thaw resistance as well as excellent in development of initial strength and a semiflexible paving using the injection material.SOLUTION: There are provided an injection material forming a semiflexible paving with compressive strength of material age after injection of 2 hours of 5 N/mmor more, having cement amount of 55 wt.% or more, containing a fine aggregate, a rapid hardening material, a powder resin, a water-reducing agent, and an AE agent, and having water powder ratio of cement milk of 42 wt.% or less, viscosity of cement milk of 250 to 500 mPa s, and air amount of 2 to 12 vol.%, preferably water powder ratio of 39 wt.% or less, viscosity of cement milk of 290 to 360 mPa s, and air amount of 5.3 to 9.0 vol.%, and a semiflexible paving formed by the injection material.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an injection material for semi-flexible pavement having excellent freeze-thaw resistance and excellent initial strength, and a semi-flexible pavement using the injection material.

  As a pavement for roads and parking lots, a semi-flexible pavement having an intermediate property between asphalt pavement and concrete pavement is known. Semi-flexible pavement is a pavement formed by infiltrating cement milk mainly composed of cement into the voids of an open-graded asphalt mixture (porosity 20-28%) with a large porosity, and the flexibility of asphalt pavement. It is known as a pavement that combines the rigidity and durability of concrete pavement.

For semi-flexible pavement, the general curing time from construction to the opening of traffic is determined by the type of injection material. It is about 3 days for normal type, about 1 day for early strength type, and about 3 hours for super hard type. With the current injection material, it is difficult to obtain a strength (compressive strength of 5 N / mm ² or more) that can open the traffic in a time shorter than 3 hours even with the super-hard type.

For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 11-292579) describes a semi-flexible pavement injection material intended for early traffic opening by using a quick-hardening cement containing calcium chloroaluminate mineral. Yes. Since the calcium chloroaluminate mineral has an appropriate fast hardening property, an initial strength of 3.4 to 8.7 N / mm ² can be obtained at a material age of about 3 hours. However, the initial strength of about 2 hours, which is shorter than this, is low, and it is difficult to obtain the strength capable of opening traffic in about 2 hours after injection.

  Further, the conventional semi-flexible pavement has low resistance to freezing and thawing, and there is a problem in that the pavement deteriorates early due to a crack caused by the freezing and thawing action received after use in construction in a snowy cold region. In order to enhance the durability (cracking resistance, freeze-thaw resistance) of semi-flexible pavement, Patent Document 2 (Japanese Patent Laid-Open No. 11-228205) describes a semi-flexible pavement using a non-re-emulsifying powder elastic polymer. An injection material is described.

  However, since the non-re-emulsifying type powder elastic resin is expensive, if the amount used is large, the cost increases. In addition, although this injection material has good resistance to freezing and thawing as a single unit, the semi-flexible pavement after injection into an open-graded asphalt mixture is cracked when subjected to repeated freezing and thawing action. The freeze-thaw resistance is not always good.

JP 11-292579 A JP 11-228205 A

  The present invention is a semi-flexible pavement or an injection material thereof, which has solved the above-mentioned conventional problems, and has an excellent freeze-thaw resistance and an excellent initial strength. A semi-flexible pavement using an injection material is provided.

The present invention relates to a semi-flexible pavement injection material having the following configuration.
[1] The cement amount is 55 wt% or more, includes fine aggregate, quick-hardening material, powder resin, water reducing agent, and AE agent. An injecting material for semi-flexible pavement characterized by being 250 to 500 mPa · s and an air amount of 2 to 12 vol%.
[2] The semi-flexible pavement system injection material according to the above [1], which has a water powder ratio of 39 wt% or less, a cement milk viscosity of 290 to 360 mPa · s, and an air amount of 5.3 to 9.0 vol%.
[3] Semi-flexibility as described in either [1] or [2] above, wherein the content of the AE agent is 0.01 to 0.2 wt% with respect to the total amount of cement and quick-hardening material. Injection material for pavement.
[4] The semi-flexibility according to any one of [1] to [3] above, wherein the content of the water reducing agent is 0.01 to 1.0 wt% with respect to the total amount of cement and quick-hardening material. Injection material for pavement.
[5] The semi-flexible pavement injection material according to any one of [1] to [4] above, wherein the content of the powder resin is 0.5 to 5 wt% of the total powder amount.
[6] Of the above [1] to [5], containing one or more admixtures of limestone fine powder, coal ash, fly ash, and silica fine powder in an amount of 5 to 30 wt% based on cement The semi-flexible pavement injection material described in any one of the above.
[7] The semi-flexible pavement injection material according to any one of [1] to [6] above, which contains an AE water reducing agent instead of the water reducing agent and the AE agent.
[8] The semi-flexible pavement injection material according to any one of [1] to [6] above, wherein the water reducing agent is a high performance water reducing agent.
[9] The semi-flexible pavement injection material according to [7], wherein the AE water reducing agent is a high-performance AE water reducing agent.

The present invention relates to a semi-flexible pavement having the following configuration.
[10] A pavement using the semi-flexible pavement injection material according to any one of [1] to [9] above, and for semi-flexible pavement at a material age of 1.5 to 2 hours after injection. Semi-flexible pavement in which the compressive strength of the injected material is 5 N / mm ² or more and the compressive strength of the material 7 days is 30 N / mm ² or more.
[11] The surface of the pavement is covered with a 3% aqueous solution of sodium chloride, cooled to −18 ° C. after 1 hour from + 23 ° C., maintained at −18 ° C. for 16 hours, and heated to −23 ° C. after 1 hour from −18 ° C. The semi-flexible pavement according to the above [10], wherein the cumulative scaling amount is 270 g / m ² or less on average when the freeze-thaw cycle maintaining + 23 ° C. for 6 hours is repeated 210 times.

[Specific description]
The injection material of the present invention has a cement amount of 55 wt% or more, includes fine aggregate, quick-hardening material, powder resin, water reducing agent, and AE agent, and the water powder ratio of cement milk is 42 wt% or less, The cement milk has a viscosity of 250 to 500 mPa · s and an air content of 2 to 12 vol%.

  The injection material of the present invention is mainly composed of cement. As the type of cement, ordinary Portland cement, early-strength Portland cement, moderately hot Portland cement, low heat Portland cement, blast furnace cement, fly ash cement and the like can be used. The amount of cement is 55 wt% or more, preferably 60 wt% or more. If the cement amount is less than 55 wt%, the absolute amount of the binder is insufficient, so that sufficient compressive strength of the injection material cannot be obtained.

  The injection material of the present invention includes a fast-hardening material. As the quick hardening material, a mixture of calcium aluminate and anhydrous gypsum, a mixture of alumina cement and anhydrous gypsum, or the like can be used. The content of the quick-hardening material is preferably 5 to 30 wt% of the cement amount.

As hydraulic materials (admixtures) other than cement, limestone fine powder, coal ash, fly ash (type I or type II), and quartzite fine powder can be used together with cement. Greenhouse gases derived from cement production without lowering initial strength and long-term strength by substituting and mixing pozzolanic substances such as limestone fine powder, coal ash, fly ash, and silica fine powder with part of cement The generation of (CO ₂ ) can be reduced, and an environment-friendly semi-flexible pavement injection material can be obtained. The amount of the admixture is preferably 30 wt% or less of the cement amount. When the content of the admixture is larger than this, the amount of cement is relatively reduced, and sufficient compressive strength of the injection material cannot be obtained. If the amount of the admixture is less than 5 wt% of the cement amount, the effect of using the admixture becomes insufficient.

  The injection material of the present invention includes fine aggregate. As the fine aggregate, quartz sand, river sand, mountain sand, crushed sand, limestone crushed sand, slag crushed sand and the like can be used. The content of fine aggregate is preferably 5 to 40 wt%.

  The injection material of the present invention contains an AE agent (air entraining agent). As the AE agent, those used for general concrete can be used. For example, an alkyl ether anionic surfactant can be used. Moreover, high alkyl carboxylic acid type | system | group anionic surfactants, such as a modified | denatured rosin acid compound type | system | group anionic surfactant and an alkylallyl sulfonic acid compound type | system | group anionic surfactant, can be used.

  The injection material of the present invention contains an air amount of 2 to 12 vol%, preferably 5.3 to 9.0 vol% in the state of cement milk, and AE is included so as to include this air amount. The content of the agent is preferably 0.01 to 0.2 wt% with respect to the total amount of cement and quick-hardening material. If the AE agent is less than 0.01 wt%, a predetermined amount of air cannot be contained, and if it is more than 0.2 wt%, the amount of air becomes excessive and the compressive strength of the injection material decreases.

  The injection material of the present invention contains a powder resin. A re-emulsified powder resin can be used as the powder resin. Re-emulsified powder resin is produced by spray-drying an aqueous synthetic resin emulsion, for example, and can be re-emulsified in water simply by adding it to water and stirring at the time of use. Used in products and semi-flexible pavement in order to prevent cracking, improve freeze-thaw resistance, and improve water retention.

  As the re-emulsifying powder resin, vinyl acetate / persartic acid vinyl copolymer powder resin, vinyl acetate / ethylene copolymer powder resin are commercially available, and are acrylic, vinegar bibeova, vinegar bibeoba acryl, biethylene vinegar, vinyl acryl acrylate. Re-emulsified powder resins such as are known. A commercially available re-emulsified powder resin can be used for the injection material of the present invention.

  The content of the re-emulsified powder resin is preferably 0.5 to 5 wt% of the total powder amount. When the content of the powder resin is less than 0.5 wt%, the content of the powder resin is insufficient for preventing cracking, improving freeze-thaw resistance, and improving water retention. It does not change substantially.

  The injection material of the present invention contains a water reducing agent. The water reducing agent may be a high performance water reducing agent. As the water reducing agent or high performance water reducing agent, polycarboxylic acid type water reducing agent, naphthalene type water reducing agent, melamine type water reducing agent, aminosulfonic acid type water reducing agent, polyether type water reducing agent, etc. used in general concrete may be used. it can. The amount of the water reducing agent or the high performance water reducing agent in the injection material is such that when the cement powder water powder ratio is 42 wt% or less, the viscosity of the cement milk is 250 to 500 mPa · s. For example, the amount of the water reducing agent Is preferably 0.01 to 1.0 wt% with respect to the total amount of cement and quick-hardening material. If the amount is less than 0.01 wt%, a sufficient improvement in fluidity and injectability cannot be obtained. Even when a high-performance water reducing agent is used, the amount thereof may be an amount such that the viscosity of cement milk is 250 to 500 mPa · s when the water powder ratio of cement milk is 42 wt% or less.

  The injection material of the present invention may use an AE water reducing agent or a high performance AE water reducing agent instead of the AE agent and the water reducing agent. The content of the AE water reducing agent or the high performance AE water reducing agent is such that when the cement powder water powder ratio is 42 wt% or less, the viscosity of the cement milk is 250 to 500 mPa · s and the cement milk is 2 to 12 vol%. Is the amount that will contain. In addition, if AE agent and a water reducing agent are used separately, each quantity will be easy to adjust.

  The injection material of the present invention is an AE water reducing agent (may be a high performance AE water reducing agent) in the presence of a quick-hardening material, a water reducing agent (or a high performance water reducing agent) and an AE agent, or in place of the water reducing agent and the AE agent. In the presence of water, the cement powder has a water powder ratio of 42 wt% or less, and the cement milk has a viscosity of 250 to 500 mPa · s, preferably a water powder ratio of 39 wt% or less. Is 290 to 360 mPa · s, and contains an air amount of 2 to 12 vol%, preferably 5.3 to 9.0 vol% in the state of cement milk.

  When the water powder ratio of cement milk exceeds 42 wt%, the initial strength of the injected material of 1.5 to 2 hours of age does not sufficiently develop, and the long-term compressive strength after 7 days of material becomes low. Further, when the water powder ratio exceeds 42 wt%, the viscosity of the cement milk becomes low, so that the entrained air of the cement milk is easily removed and it is difficult to maintain a sufficient amount of air.

  Conventional semi-flexible pavement injection materials generally have a water powder ratio of 45 wt% or more in order to increase the permeability to the pavement gap, and the viscosity of cement milk is approximately 180 mPa · s, which is sufficient air. Can't hold the amount. For this reason, the conventional semi-flexible pavement injection material does not have a technique for introducing entrained air into cement milk using an AE agent.

  The injection material of the present invention can maintain a sufficient amount of air by adjusting the viscosity of cement milk to 250 to 500 mPa · s, and preferably adjusting the viscosity to 290 to 360 mPa · s so that the entrained air does not escape. I did it. Specifically, the amount of air is 2 to 12 vol% in the state of cement milk.

  If the viscosity of the cement milk is less than 250 mPa · s, a sufficient amount of air cannot be maintained. On the other hand, when the viscosity of the cement milk exceeds 500 mPa · s, the fluidity is lowered and it is difficult to inject it into the pavement (asphalt base). In the injection material of the present invention, the viscosity of cement milk is 500 mPa · s or less, and the flow time of P funnel in cement milk is 12 seconds or less.

  If the amount of air in the cement milk is less than 2 vol%, sufficient freeze-thaw resistance cannot be obtained. Specifically, for example, when a semi-flexible pavement is repeatedly frozen and thawed, the amount of scaling of the pavement surface increases, the substrate part of the pavement surface is rolled up, and the aggregate is exposed, and the pavement surface Becomes coarse. On the other hand, if the amount of air in the cement milk exceeds 12 vol%, the compressive strength of the injecting material is lowered and the resistance to freezing and thawing is also reduced. 0.0 vol% is more preferable.

For example, a cement milk having a viscosity of 250 to 500 mPa · s and containing 2 to 12 vol% of air has a compressive strength of an injection material of 2 hours of age of 5 N / mm ² or more, The compressive strength at the age of 7 days is 30 N / mm ² or more, and the freeze-thaw resistance of the injection material alone is also good. Furthermore, when using cement milk having a viscosity of 290 to 360 mPa · s and containing an air amount of 5.3 to 9.0 vol%, the compressive strength of the injection material at a material age of 1.5 hours is 5 N / mm. ² or more, further compressive strength of injection material at the age of 2 hours is not more 6.5 N / mm ² or more and compressive strength at the age of 7 days 34N / mm ² or more, grout single freeze-thaw The resistance is very good. Moreover, the scaling amount of the surface of the pavement into which the cement milk is injected does not depend on the type of asphalt used in the open-graded asphalt mixture or the maximum particle size of the coarse aggregate, and is about 1/8 of the conventional cement milk. ~ About 1/10.

  Some of the conventional injection materials have an air volume of 2 vol% or more, but the viscosity of this cement milk is at most about 180 mPa · s, and the air volume must be maintained sufficiently during the injection work. I can't.

  In addition, the injection material of the present invention is excellent in the injection property to the pavement because the flow rate of the P funnel is 12 seconds or less and the fluidity is good despite the water powder ratio being 42 wt% or less. .

Semi flexible pavement injection material used in the present invention, the compressive strength at the age of 1.5 to 2 hours is not more 5N / mm ² or more, be a compressive strength at the age of 7 days 30 N / mm ² or more , It has an advantage of high initial strength at a material age of 2 hours. In addition, the injection material alone has good freeze-thaw resistance. Moreover, the amount of scale generated when freeze-thaw is repeated is significantly small, and the resistance to freeze-thaw is remarkably high. Specifically, the surface of the pavement is covered with a 3% aqueous solution of sodium chloride, cooled to −18 ° C. after 1 hour from + 23 ° C., maintained at −18 ° C. for 16 hours, and increased to −23 ° C. after 1 hour from −18 ° C. When the freeze-thaw cycle was repeated 210 times with heating and maintained at + 23 ° C. for 6 hours, the cumulative scaling amount was 270 g / m ² or less on average, and about 1/8 to 1/10 when using a conventional injection material It is.

The semi-flexible pavement using the injection material of the present invention has a compressive strength of 5 N / mm ² or more at a material age of 1.5 to 2 hours, so that traffic can be opened 1.5 to 2 hours after injection. . The traffic opening time after injection can be shortened from the conventional 3 hours to 1.5 to 2 hours, and the construction time can be greatly reduced. Furthermore, the compressive strength at the age of 7 days is 30 N / mm ² or more, and the long-term strength is also high.

  Furthermore, since the injection material for semi-flexible pavement of the present invention is excellent in freeze-thaw resistance, the semi-flexible pavement using the injection material of the present invention has much less scale when repeated freeze-thaw, Extremely high resistance to freezing and thawing. Therefore, by using the injection material of the present invention, a highly reliable semi-flexible pavement can be formed in a cold region.

Graph of cumulative scaling amount of Example 2

[Example 1]
The materials shown in Table 1 were used, and the materials were prepared according to the amounts shown in Table 2. 3000 g of the prepared material was weighed, water was added so that the water powder ratio shown in Table 2 was added, and the mixture was kneaded with a stirrer for 2 minutes to prepare a semi-flexible pavement injection material. The injection material was subjected to a freeze-thaw test at a test temperature of 20 ° C. by measuring the P funnel flow time, viscosity, air volume, injection property, and compressive strength. The results are shown in Table 2.

The P funnel flow time was measured according to the Pavement Survey Test Manual (Japan Road Association).
The viscosity of the injection material was measured using a B-type viscometer. The viscosity is a value immediately after kneading.
The amount of air was measured in accordance with JIS standard (JIS A 1128 “Testing method of fresh concrete with air pressure—air chamber pressure method”) immediately after kneading.
The pouring property was judged to be good when the pouring material was poured into a straight asphalt base (thickness: 100 mm) having a porosity of 22% and the pouring material reached the lower surface of the base material.
Compressive strength is measured by pouring the injected material into a 4 x 4 x 16 cm formwork and measuring the compressive strength at a material age of 2 hours and a material of 7 days in accordance with JIS standard (JIS R 5210 "Cement physical test method"). did.
The freeze-thaw test of the injection material itself is based on the test method of ASTM standard (ASTM C-666 (A method)) after preparing a 10 x 10 x 40 cm specimen and curing it in water until the age of 28 days. The cycle of freezing in water and thawing in water was repeated 300 times, and the appearance was observed and the relative dynamic elastic modulus was measured and evaluated. As the evaluation criteria, 80% or more of the relative dynamic elastic modulus after 300 cycles was determined as very good, 70% or more as good, and less than 70% as poor.

  Sample 1 shown in Table 2 corresponds to a conventional injection material, which has a water powder ratio of 45 wt% and a viscosity of 182 mPa · s. Since the viscosity is low and the amount of air with no AE agent added is 0.5 vol%, The freezing and thawing resistance of the material itself is low. Sample 1 has a low compressive strength at 2 hours of age, and traffic cannot be opened 2 hours after injection. On the other hand, Sample 2 has a water-powder ratio of 38 wt% and a viscosity of 650 mPa · s, but the amount of air with no AE agent added is about 1.6 vol%, and the injection material alone has a freezing and thawing resistance. Low.

Samples 3 to 10 were adjusted to a water powder ratio of 36 to 42 wt% and a viscosity of 262 to 355 mPa · s, and AE agent was added in an amount of 0.02 to 0.18 wt%, and the air amount was 2.8 to 11.0 vol%. The viscosity and the air amount are significantly higher than those of conventional injection materials. These samples 3, 4 and 10 have a high resistance to freezing and thawing of the injection material alone, the compressive strength at the age of 2 hours is 5 N / mm ² or more, and the strength that can open the traffic in 2 hours after the injection, The compressive strength at 7 days of age is 30 N / mm ² or more, and the long-term strength is also high. Furthermore, Sample 5 to Sample 9 have extremely high freeze-thaw resistance of the injection material alone, and the compressive strength at the age of 1.5 hours is 5 N / mm ² or more, and traffic can be opened 1.5 hours after injection. has a strength and compressive strength at the age of 2 hours 6.5 N / mm ² or more and the initial strength is remarkably high, and compressive strength at the age of 7 days is a 34N / mm ² or more, long-term strength is high . On the other hand, Sample 11 was adjusted to a water powder ratio of 38.5 wt% and a viscosity of 235 mPa · s, and AE agent was added in an amount of 0.30 wt%. However, the amount of AE agent added was excessive, and the amount of air was 13 vol. %, The compressive strength decreases, which is not preferable.

[Example 2]
Using sample 1 (conventional product) and sample 6 (product of the present invention) in Table 2, with regard to scaling deterioration of semi-flexible pavement due to antifreezing agent in snowy cold region, freezing and thawing action is given from the surface of the pavement, and peeling resistance The test which evaluates was performed based on ASTM standard (ASTM-C-672).
The specimen size of the pavement was set to a size for wheel tracking test (30 × 30 × 5 cm). The specimen was placed at room temperature for 3 days after milk penetration, and the milk adhering to the aggregate on the surface was removed and cured at a temperature of 20 ° C. and a humidity of 60% RH for 14 days or more. Except for the upper surface of this specimen, it was coated with an epoxy resin, a bank was formed around the upper surface and water-stopped, and then cured under the same conditions as described above. The surface of the specimen is covered with a 3% aqueous solution of sodium chloride, cooled to -18 ° C after 1 hour from + 23 ° C, maintained at -18 ° C for 16 hours, heated to + 23 ° C after 1 hour from -18 ° C, and + 23 ° C. The freeze-thaw cycle for 6 hours was repeated 210 times. A peel piece was collected for each cycle, the dry weight was measured, and the cumulative scaling amount was determined. The results are shown in FIG. In FIG. 1, for sample 1, an injection material was injected into one type of asphalt matrix (symbol S-9, S-10 polymer-modified H-type asphalt [aggregate maximum dimension 13 mm]). For sample 6, four types of asphalt matrixes are used (symbol S-1, S-2 straight asphalt [aggregate maximum dimension 13 mm], symbol S-3, S-4 straight asphalt [aggregate maximum dimension 20 mm], symbol S -5, S-6 polymer modified H type asphalt [aggregate maximum dimension 13 mm], symbol S-7, S-8 polymer modified H type asphalt [aggregate maximum dimension 20 mm]) It is a graph which shows the result of a freeze-thaw resistance test.

As shown, the cumulative amount of scaling of conventional injection material (Sample 1) is the average 2575g / m ^2, the cumulative amount of scaling of injection material of the present invention (Sample 6) is the average 270 g / m ^2, a conventional The result was excellent in resistance to freezing and thawing regardless of the kind of the open-graded asphalt mixture.

Example 3
The materials shown in Table 1 were used, and the materials were prepared according to the amounts shown in Table 3. A semi-flexible pavement injection material was prepared in the same manner as in Example 1 using the prepared material. The injection material was subjected to a freeze-thaw test at a test temperature of 20 ° C. by measuring the P funnel flow time, viscosity, air volume, injection property, and compressive strength. The results are shown in Table 3. All of these samples 20 to 23 have high resistance to freezing and thawing, the compressive strength at an age of 1.5 hours is 5 N / mm ² or more, and the strength is such that the traffic can be opened 1.5 hours after injection. The compressive strength at 7 days of age is 30 N / mm ² or more, and the long-term strength is also high.

Claims (11)

The cement amount is 55 wt% or more, and includes fine aggregate, quick-hardening material, powder resin, water reducing agent, and AE agent, the cement powder water powder ratio is 42 wt% or less, and the viscosity of cement milk is 250 to 500 mPa -An injection material for semi-flexible pavement characterized by being s and the amount of air being 2 to 12 vol%. The semi-flexible pavement system injection material according to claim 1, having a water powder ratio of 39 wt% or less, a cement milk viscosity of 290 to 360 mPa · s, and an air amount of 5.3 to 9.0 vol%. The injection material for semi-flexible pavement according to any one of claims 1 and 2, wherein the content of the AE agent is 0.01 to 0.2 wt% with respect to the total amount of cement and quick-hardening material. The semi-flexible pavement injection material according to any one of claims 1 to 3, wherein a content of the water reducing agent is 0.01 to 1.0 wt% with respect to a total amount of the cement and the quick-hardening material. The semi-flexible pavement injection material according to any one of [1] to [4] above, wherein the content of the powder resin is 0.5 to 5 wt% of the total powder amount. The limestone fine powder, coal ash, fly ash, and the admixture of fine silica stone powder contain one or two or more of them in an amount of 5 to 30 wt% with respect to the cement. Semi-flexible pavement injection material. The semi-flexible pavement injection material according to any one of claims 1 to 6, comprising an AE water reducing agent in place of the water reducing agent and the AE agent. The semi-flexible pavement injection material according to any one of claims 1 to 6, wherein the water reducing agent is a high performance water reducing agent. The semi-flexible pavement injection material according to claim 7, wherein the AE water reducing agent is a high-performance AE water reducing agent. A pavement using the semi-flexible pavement injecting material according to any one of claims 1 to 9, wherein a compressive strength at a post-injection age of 2 hours is 5 N / mm ² or more, and an age of 7 Semi-flexible pavement with a daily compressive strength of 30 N / mm ² or more. The surface of the pavement is covered with a 3% aqueous solution of sodium chloride, cooled to −18 ° C. after 1 hour from + 23 ° C., maintained at −18 ° C. for 16 hours, heated to −23 ° C. after 1 hour from −18 ° C., and + 23 ° C. 11. The semi-flexible pavement according to claim 10, wherein an average scaling amount is 210 or less 270 g / m ^{2 on} average when a freeze-thaw cycle in which the temperature is maintained for 6 hours is repeated 210 times.

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