KR100917905B1 - Emergency maintenance and resurfacting method of construction - Google Patents

Abstract

A no-slump concrete composition for emergency maintenance of damaged road pavement and an emergency repair and re-pavement method by a vibrating roller using the same are provided to shorten the time for curing, thereby returning the normal traffic condition more quickly. An emergency repair and re-pavement method by a vibrating roller using a no-slump concrete composition for emergency maintenance of damaged road pavement comprises the steps of chipping degraded road pavement(S1), placing a concrete composition which is made by mixing cement of volume ratio 100~600kg/m^3 and unit amount 100~160kg/m^3, fine aggregate of 300~1000kg/m^3, coarse aggregate of 500~1300 kg/m^3, latex of 5~15wt%, and CSA based clinker of 20~50wt% to the cement(S2), spreading and compacting the concrete first using a vibrating scraper and a paver(S3), carrying out second compaction using a vibration roller tamper(S4), spreading a coating agent or a membrane curing agent(S5), flattening the cured concrete using surface treatment equipment(S6), and joint-cutting the flattened concrete using a cutting device(S7).

Description

Emergency slump concrete composition for damaged road pavement and vibratory roller compaction road pavement Emergency repair and repaving method for road pavement {EMERGENCY MAINTENANCE AND RESURFACTING METHOD OF CONSTRUCTION}

The present invention is added to the latent (latex) and CSA (Calcium Sulfur Aluminate) -based clinker and added to the cement and aggregate as a base material for the purpose of emergency repair work and repaving of damaged (deteriorated) road paving early traffic Relates to a roller slump-free concrete composition that can be opened;

In addition, it is possible to shorten the physical curing period rather than shortening the existing chemical curing period by compacting using the vibratory roller compactor when pouring the composition, as well as integrating with the existing pavement, and the permeability and freeze resistance and the surface of the concrete. The present invention relates to a vibratory roller compaction road pavement emergency repair and repaving method that has improved durability and adhesion performance such as peel resistance.

As a technique for concrete composition and manufacturing method for emergency repair and repaving construction of road pavement,

Republic of Korea Patent Registration No. 10-0436120 (2004.06.04, registered, hereinafter referred to as 'prior art 1') In the cemented carbide composition, silicon oxide, aluminum oxide, iron oxide, manganese oxide, calcium oxide, magnesium oxide, oxide It is made by equally mixing the carium, sodium oxide, phosphorus pentaoxide, titanium oxide, the heat shrinkability is reduced, the generation of tensile stress is reduced, the occurrence of fine cracks can be suppressed to reduce the permeability to improve durability.

In addition, Korean Patent Registration No. 10-0537953 (2005.12.14, registered, hereinafter referred to as 'prior art 2') `` Method of producing latex modified cemented carbide concrete composition '' of retardant improves and adds concrete raw material input method. By optimizing the function, it has fluidity suitable for laying and has high early strength expression.

In addition, Korean Patent Registration No. 10-0618297 (registered on August 24, 2006, hereinafter referred to as 'advanced technology 3') in Portland cement, cemented carbide, calcium sulfoaluminate-based expander and blast furnace It consists of fine slag powder, prevents microcracks, develops strength in 3 hours, enables traffic to be opened, and has impermeability.

In addition, Korean Patent Registration No. 10-0696313 (2007.03.12, registered, hereinafter referred to as 'prior art 4') `` Ultrahard cement latex modified concrete composition '' cemented carbide, fine aggregate, coarse aggregate, water and polymer emulsion It is made to extend the time to harden the concrete to ensure a sufficient finishing work time to smooth the surface of the poured concrete has improved workability and concrete steel and durability improvement effect.

In addition, Korea Patent Registration No. 10-0755039 (2007.08.28, registered, hereinafter referred to as 'advanced technology 5') `` Ultra-high-speed high-strength concrete composition '' in high-powder calcium sulfur aluminate, high powder anhydrous gypsum, portland cement and melamine It is composed of high oil or polycarboxylic acid-based high fluidizing agent, and recycles waste ascon and expresses compressive strength within a short time, and has an early strength of about 150kgf / ㎠ or more within 10 to 20 minutes at the construction site requiring urgent vehicle traffic. It has the effect of being used in emergency construction where the practical strength is expressed.

In addition, Republic of Korea Patent Registration No. 10-0755272 (2007.08.29, registered, 'prior art 6') `` Awin-based clinker, usually portland cement, containing and crushed glass in `` fast-hard cement composition for latex modified concrete '' , Including a coagulation control agent, a hardening accelerator and a dispersant, it is possible to secure sufficient working time due to the decrease in the flow performance of the concrete and to achieve high early strength and stable long-term strength expression.

The prior arts 1 to 6 can shorten the curing time of the composition by using an ultrafast cement, but it is difficult to secure sufficient working time due to rapid curing. In particular, by adding latex and polymer modifiers, the water-cement ratio, which has the greatest effect on cracking, is maintained at an appropriate level to reduce shrinkage cracking (temperature cracking, plastic shrinkage cracking, etc.) generated by evaporation of water (unit quantity). I tried to solve the problem,

The prior art requires a unit quantity to maintain an appropriate amount of water-cement ratio in order to secure workability, and cracks are not eliminated because ultimately, evaporation of moisture cannot be prevented even when polymer materials and latex are used. In order to secure the workability, retardation of the heat of hydration is delayed by using a retardant to suppress the condensation of concrete, which can only suppress the initial strength expression.

Increasing the water-cement ratio increases the possibility of strength and cracking, and on the contrary, reduces the water-cement ratio and increases the initial workability by using a fluidizing agent. Can not.

On the other hand, as a technology relating to the repair and paving method using a concrete composition for emergency repair and repaving construction of road pavement,

Republic of Korea Patent Registration No. 10-0669978 (2007.01.10, registered, hereinafter referred to as 'advanced technology 7') In the `` Road paving structure and repair method '' by crushing the concrete slab layer formed on the concrete layer to a predetermined depth It comprises a crushing step of forming an aggregate layer and a pavement step of forming a road pavement on top of the crushed aggregate layer, it is possible to more efficiently repair the existing concrete road pavement structure.

In addition, the Republic of Korea Patent Registration No. 10-0687211 (2007.02.20, registered, hereinafter referred to as 'prior art 8') `` Road paving method using precast concrete panels '' panel body with concrete, connecting member and / or road Process of making precast concrete panels for pavement as formwork, process of flattening base surface, installation of precast concrete panels in sequence using connecting members and filling slots, connecting members in filling slots by injecting mortar It consists of a grouting process to fix the, improves the construction of the road.

In addition, the Republic of Korea Patent Registration No. 10-0774446 (2007.11.01, registered, referred to as 'prior art 9'. It comprises an impermeable layer forming step, the installation of perforated water collecting pipes and the surface layer forming step, to prevent the water retention phenomenon of the lower part of the repaired asphalt pavement to obtain a structural stability and durable pavement.

The prior arts 1 to 6 are conventional techniques for repairing the pavement in common use, for the purpose of minimizing traffic control, the use of superhard cements that have short hardening times and high strength within a short time. The strength required for opening can be obtained quickly, but high hydration heat and dry shrinkage cause cracks and stresses in the concrete, causing breakage of various forms of concrete pavement. Since the strength is expressed by the chemical properties through the concrete, curing time is required after the concrete is placed, so construction through physical compaction using construction equipment such as vibration rollers and tire rollers was impossible.

The prior arts 7 to 9 are intended to improve the efficient repair and construction of the concrete road pavement structure, compaction methods using construction equipment such as vibrating rollers, tire rollers are mainly used for asphalt pavement, It is mainly applied to the base and auxiliary bases, not the surface layer directly contacting tires when driving a vehicle. The concrete used as base pavement material can only have a poor formulation in terms of strength and durability. An apparatus was needed, making it impossible to use the package as a surface layer material.

Accordingly, the present invention solves the above-mentioned problems that may occur due to the use of cemented carbide cements, and chemical premature curing such as cemented carbide cements using a compaction method that is superior in construction and economical efficiency to concrete construction methods of the prior arts. The purpose is to provide a concrete composition capable of expressing the strength required for early traffic opening in a short time (3 to 4 hours) and a construction method using the same through physical compaction by vibratory rollers and tire rollers rather than characteristics.

The present invention is made by mixing cement, unit quantity, fine aggregate, coarse aggregate, latex, and CSA-based clinker, an object of the present invention is to provide a concrete composition of a slump-free slump for roller compaction.

In addition, in the present invention, cement is usually selected from one or two of portland cement, crude steel cement, ultra-tension steel cement, and free slump concrete that can be considered and applied to suit the structure and working environment requiring emergency repair and repacking. It is an object to provide a composition.

Furthermore, the present invention, unlike the conventional concrete placing method, construction by physical methods such as compaction using a vibratory roller compactor to shorten the curing time, can be integrated with the existing pavement and the permeability of the concrete, freeze melting resistance, surface peeling resistance An object of the present invention is to provide a vibratory roller compaction road pavement emergency repair and repaving method with improved durability and adhesion.

In addition, an object of the present invention is to provide a vibratory roller compaction road pavement emergency repair and resurfacing method including a coating or coating curing agent spraying, flattening and joint cutting in the compacted state.

In order to solve the above problems, emergency slump-free concrete composition for damaged road pavement according to the present invention,

The amount of cement is 100 ~ 600㎏ / ㎥ by volume ratio, the unit quantity is 100 ~ 160㎏ / ㎥, fine aggregate 300 ~ 1000㎏ / ㎥, coarse aggregate 500 ~ 1300㎏ / ㎥, latex (latex) for the cement 5 to 15% by weight, CSA-based clinker (clinker) is made by mixing 20 to 50% by weight relative to the cement,

And the cement is characterized in that usually made by selecting one or two of Portland cement, crude steel cement, ultra-tension steel cement.

On the other hand, vibratory roller compaction road pavement emergency repair and repaving construction method according to the invention,

Chipping for degraded road pavement;

The amount of cement is 100 ~ 600㎏ / ㎥ by volume ratio, the unit quantity is 100 ~ 160㎏ / ㎥, fine aggregate 300 ~ 1000㎏ / ㎥, coarse aggregate 500 ~ 1300㎏ / ㎥, latex (latex) for the cement 5 to 15% by weight, CSA-based clinker (clinker) is a concrete composition pouring step of mixing 20 to 50% by weight with respect to the cement in a mobile mixer;

Pour concrete and primary compacting step using a vibration scraper and paver; And

A second compaction step using a vibratory roller compactor; made, including,

And further comprising the step of spraying the coating or coating curing agent in the compacted state, the flattening treatment step using the surface treatment machine in the concrete cured state, and the joint cutting step using the cutter after the flattening treatment.

Emergency slump concrete composition for the repair of damaged road pavement and vibratory roller compaction road pavement emergency repair and repaving method according to the present invention,

First, by compacting using a vibratory roller compactor, which is not a chemical method, but a physical method, the traffic can be opened within a short time (3 to 4 hours).

Second, it is possible to shorten the curing time and to integrate with the existing pavement, and to improve the durability and adhesion performance, such as the concrete's water permeation resistance, freeze-thawing resistance, surface peeling resistance.

Third, the interior of the concrete composition is tightly closed by the compaction effect of applying pressure to the concrete itself using a vibrating roller, thereby securing additional strength.

Fourth, it is excellent in workability and economical efficiency, there is no need to use additional water or a fluidizing agent to secure workability during construction, so quality control is easy.

Fifth, it is possible to provide cement-based repair materials with excellent safety and durability through improved road pavement, structural performance, and crack control performance.The roller compaction method applied to them provides fast construction speed and repair of large areas. There is an effect to improve the economics.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a graph showing the initial compressive strength and long-term compressive strength test results for the concrete composition according to the invention, Figure 2 is a graph showing the bending strength test results for the concrete composition according to the invention, Figure 3 Chloride ion permeability test results for the concrete composition according to Figure 4 is a flow chart schematically showing a construction method using a concrete composition according to the present invention.

As shown in Figures 1 to 3, the emergency repair free slump concrete composition of the damaged road pavement,

The amount of cement is 100 ~ 600㎏ / ㎥ by volume ratio, the unit quantity is 100 ~ 160㎏ / ㎥, fine aggregate 300 ~ 1000㎏ / ㎥, coarse aggregate 500 ~ 1300㎏ / ㎥, latex (latex) for the cement 5 to 15% by weight, CSA-based clinker (clinker) is made by mixing 20 to 50% by weight relative to the cement.

Here, the cement is usually selected from one or two of portland cement, crude steel cement, super rough steel cement.

And the CSA (Calcium Sulfur Aluminate) -based clinker (clinker) is preferably used in accordance with the condensation acceleration and the required strength expression.

On the other hand, as shown in Figure 4, vibratory roller compaction road pavement emergency repair and resurfacing method according to the present invention,

A chipping step S1 for degraded road pavement;

The amount of cement is 100 ~ 600㎏ / ㎥ by volume ratio, the unit quantity is 100 ~ 160㎏ / ㎥, fine aggregate 300 ~ 1000㎏ / ㎥, coarse aggregate 500 ~ 1300㎏ / ㎥, latex (latex) for the cement 5 to 15% by weight, CSA-based clinker (clinker) is a concrete composition pouring step of mixing 20 to 50% by weight with respect to the cement in a mobile mixer (S2);

Pour concrete and first compacting step S3 using a vibration scraper and a paver; And

Second compaction step (S4) using a vibratory roller compactor;

It consists of,

At this time, the coating or coating curing agent spraying step (S5) and the compaction is completed;

It further comprises a flat treatment step (S6) using a surface treatment in the state that the concrete is cured, and a joint cutting step (S7) using a cutter after the flat treatment.

Looking in more detail about the above-mentioned construction step by step,

In the chipping step (S1), the road pavement part damaged (deteriorated) is removed by manpower and equipment, and a cleaning operation is performed to remove contaminants attached to the pavement surface.

When the preparation for road pavement repair is completed in the step of placing the concrete composition (S2), a muslump concrete is prepared by using a field mixing device and a batch plant such as a mobile mixer and a forced mixer, and then prepared muslump. Concrete is transported by trucks and bulldozers and poured into the repair site.

The slumpless concrete poured in the spreading and first compacting step (S3) performs unfolding and initial compaction using a vibration scraper and a fader.

In the second compacting step (S4), the compaction is performed using construction equipment such as a vibrating roller and a vacuum press compactor.

In the joint cutting step (S7), the joint section is cut by a cutting machine to finish the construction.

Looking at the concrete composition and the emergency repair and re-packaging method using the same according to the present invention in more detail as follows.

It is composed of cement, coarse aggregate, and fine aggregate, so that it can be used by adding water (unit quantity) like a conventional concrete composition, and is configured by adding latex and CSA-based clinker thereto.

The latex (latex) was originally referred to as a natural product obtained from a rubber tree, but recently, a kind of polymer product made by chemical synthesis, which has a milky, translucent state, and small spherical (collar 0.5-5 μm) organic polymer particles such as colloids. It is dispersed in water.

This latex has the effect of increasing the fluidity of the concrete by increasing the fluidity of the concrete by the viscous property and interfacial action having self-adhesion and adsorption between the particles, thereby reducing the unit amount of water to minimize the water-cement ratio of the present invention without fluidity It is possible to secure the efficiency when mixing concrete composition by preventing smooth beaming and material separation in the production of concrete composition. Also, latex particles are filled between cement paste and aggregate, and a film film is formed to provide water-tightness and permeation resistance of chloride ion. And it can improve the adhesion performance with the existing spheres and has the effect of suppressing microcracks.

In addition, general portland cement is used to solve the stress and cracking problems caused by the high heat of hydration caused by the use of superhard cements of the prior art, but the target strength (20 MPa) within a short time (3 to 4 hours) for early traffic opening. CSA-based clinker was used to secure the initial strength by promoting the hardening of concrete.

The CSA-based clinker can be calcined at a relatively low firing temperature of 1,250 to 1,350 ° C., and is mainly composed of calcium sulfoaluminate (3CaO · 3Al ₂ O ₃ · CaSO ₄ ) having a low manufacturing cost, and is comprised of 4,000 cm ₃ / g to 5,500 cm3 / g of powder, which reacts with Ca (OH) ₂ , a hydrate of cement, and SO ₃ of slaked lime and gypsum, exhibiting properties such as expandability, fast hardness, and roughness to prevent shrinkage cracking of concrete structures, Chemical prestressed concrete member, non-shrink grout material, etc. It is a wide range of applications.

In the case of the CSA-based clinker, if the concrete is left in the air, it will dry and shrink, and if it cannot be freely contracted by the shape and the part of the internal reinforcement or structure, it will cause cracking, and it will be the same place as the foundation of heavy machinery for a long time. Under heavy loads, there is a form that cannot be restored, and an expanding agent is added to the cement to prevent such cracks and deformations. At this time, the CSA system is a kind of expanding agent.

Hereinafter will be described in more detail with reference to preferred embodiments of the present invention. These examples are merely to illustrate the invention, it is obvious that the invention is not limited.

The following concrete mixing was performed as shown in Tables 1 and 2, and in Table 1, the mixing was set by using the amount of cement as 390 kg / m 3, and the mixing using the cemented carbide cement, the cemented steel cement, the cemented steel cement, and the accelerator was used. All of the formulations were applied simultaneously for the roller compaction and the general formulation.

Experiment variable cement water Fine aggregate Coarse aggregate Latex Glidants accelerant Carbide (Normal)  390  82  925  723  127  3.9  - Carbide (with roller compaction + latex)  390  82  925  723  127  -  - Carbide mirror (with roller compaction + latex)  390  82  925  723  -  -  - Joe River (General)  390  82  925  723  127  3.9  3.9 Steel (with roller compaction + latex)  390  82  925  723  127  -  3.9 Steel (without roller compaction and latex)  390  82  925  723  -  -  3.9 Rough Steel (General)  390  82  925  723  127  3.9  1.95 Ultra-tough steel (with roller compaction + latex)  390  82  925  723  127  -  1.95 Rough Steel (Without Roller Compaction + Latex)  390  82  925  723  -  -  1.95 Common Portland Cement (General)  390  82  925  723  127  3.9  5.85 Common Portland Cement with Roller Compaction + Latex  390  82  925  723  127  -  5.85 Common Portland Cement (With Roller Compaction + Latex)  390  82  925  723  127  -  5.85

Example  One

The concrete composition according to Table 1 was subjected to a slump test (slump test) for testing the consistency of the concrete that is not yet hardened, and the test results are shown in Table 2 below.

 Experiment variable  Number of experiments  Average One 2 3 4 5 6 Carbide (Normal)  8  10  10  8  8  10  9 Carbide (with roller compaction + latex)  0  0  0  0  0  0  0 Carbide mirror (with roller compaction + latex) Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Joe River (General)  10  12  12  11  10  11  11 Steel (with roller compaction + latex)  0  0  0  0  0  0  0 Steel (without roller compaction and latex) Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Rough Steel (General)  11  10  10  10  11  11  10.5 Ultra-tough steel (with roller compaction + latex)  0  0  0  0  0  0  0 Rough Steel (Without Roller Compaction + Latex) Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Common Portland Cement (General)  12  12  12  11  11  11  11.5 Common Portland Cement with Roller Compaction + Latex  0  0  0  0  0  0  0 Common Portland Cement (With Roller Compaction + Latex) Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible Bibim work is impossible

The concrete composition for general casting was maintained about 8-15cm slump to ensure workability, and the concrete composition suitable for the method using the roller compaction according to the present invention maintained all about 0cm slump and did not add latex. The roller compaction combination is not vibrated and the material is separated and aggregated.

Therefore, the latex or fluidizing agent should be added to ensure the fluidity in the mixing ratio of the material, but the fluidizing agent maintains the continuous fluidity, so that the instantaneous fluidity is generated and the fluidity is lost after smoothing the beam work.

Example  2

Long-term compressive strength test for measuring the uniaxial compressive strength after 28 days by curing the initial compressive strength and age (28) strength (Fck28), that is, cast on a mold (15x30) for the concrete composition according to Table 1 Was carried out. Experimental results are shown in Table 3 and in the graph of FIG. 1.

 Experiment variable  Compressive strength (MPa) 4 hours 1 day 28 days Carbide (Normal)  21  30  40 Carbide (with roller compaction + latex)  29  34  45 Carbide mirror (with roller compaction + latex)  12  16  20 Joe River (General)  10  20  40 Steel (with roller compaction + latex)  24  30  43 Steel (without roller compaction and latex)  8  10  14 Rough Steel (General)  11  21  41 Ultra-tough steel (with roller compaction + latex)  26  31  45 Rough Steel (Without Roller Compaction + Latex)  9  12  15 Common Portland Cement (General)  2  12  45 Common Portland Cement with Roller Compaction + Latex  12  24  45 Common Portland Cement (With Roller Compaction + Latex)  3  11  18

In the graph of FIG. 1, the experimental variables of Table 3 are displayed in order from 1 to 12.

Compared to cemented carbide cement (General: ①), cemented carbide cements (including roller compaction + latex: ②) have higher initial and long term compressive strength, whereas cemented carbide cement (③) without latex is used as general cemented carbide. It has much lower strength than light cement.

In addition, crude cement, crude cement and ordinary Portland cement are similar to cemented carbide results.

Therefore, the concrete composition for general casting does not show the strength that satisfies the emergency repair except when using cemented carbide, and all of the composition including the latex and roller compaction except the ordinary Portland cement is used for emergency repair. Meets strength criteria for This is because the water-cement ratio is very low, the use of a fluidizing agent is not delayed, and the development of strength is not delayed.

On the contrary, the roller compaction method without latex does not secure sufficient fluidity during the bibeaming operation, and thus the bibeaming operation of the material is not smooth, and thus the strength is significantly reduced due to material separation.

Example 3

For the concrete composition according to Table 1, a bending strength test was conducted to determine the proper use of the concrete by measuring the bending moment force among the stresses acting on the concrete structure and verifying the results. Same as

 Experiment variable  28-day flexural strength (MPa) One 2 3 4 Mean Carbide (Normal)  4.5  5.2  5  4.9  4.9 Carbide (with roller compaction + latex)  4.9  5.5  5.5  5.3  5.3 Carbide mirror (with roller compaction + latex)  1.9  1.7  1.9  1.7  1.8 Joe River (General)  4.5  4.8  4.9  5.0  4.8 Steel (with roller compaction + latex)  5.0  5.5  5.2  5.5  5.3 Steel (without roller compaction and latex)  2.0  2.1  2.0  1.9  2.1 Rough Steel (General)  4.8  5.0  4.9  4.9  4.9 Ultra-tough steel (with roller compaction + latex)  5.1  5.2  5.2  5.3  5.2 Rough Steel (Without Roller Compaction + Latex)  2.1  2.1  1.9  1.9  2.0 Common Portland Cement (General)  4.8  4.7  4.6  4.7  4.7 Common Portland Cement with Roller Compaction + Latex  5.0  5.0  5.3  5.3  5.2 Common Portland Cement (With Roller Compaction + Latex)  1.9  1.8  2.0  1.9  1.9

The flexural strength test was performed in four times, and the average value was calculated and shown in Table 4 above.

Both the concrete composition using the general casting method and the concrete composition with roller compaction including latex meet the bending strength criteria for emergency repair.

In particular, it can be seen that the composition containing the roller compaction + latex has a higher flexural strength than the general composition.

This is a result of the compaction of the concrete composition by press compaction using a vibrating roller compactor, and the roller compaction concrete composition without latex does not have a smooth beam, so material separation occurs, resulting in very small strength. It is not secured.

Therefore, it can be seen that the composition containing the roller compaction + latex is higher in flexural strength than the concrete composition of the general casting method, and the composition without the roller compaction + latex is significantly lower than the two compositions.

Example 4

The concrete composition for emergency repair according to Table 1 was carried out a chlorine ion permeation test to determine whether the waterproofing material of the concrete structure is less than the water molecules chlorine ions, the experimental results are shown in the graphs of Table 5 and FIG. same.

 Experiment variable  Chlorine Ion Permeation (Coulombs) 4 hours 1 day 28 days Carbide (Normal)  980  600  540 Carbide (with roller compaction + latex)  60  50  34 Carbide mirror (with roller compaction + latex)  580  340  210 Joe River (General)  4200  800  1400 Steel (with roller compaction + latex)  680  1080  950 Steel (without roller compaction and latex)  2000  400  1100 Rough Steel (General)  3800  1480  1180 Ultra-tough steel (with roller compaction + latex)  1480  1010  740 Rough Steel (Without Roller Compaction + Latex)  1800  1290  1000 Common Portland Cement (General)  Not measurable  7800  2920 Common Portland Cement with Roller Compaction + Latex  6700  4300  2540 Common Portland Cement (With Roller Compaction + Latex)  8800  5600  2800

The superhard mirror (including roller compaction + latex) composition shows a significantly lower permeation rate than the super fast mirror (normal) composition,

Compared to the crude steel (general) composition, the crude steel (including roller compaction + latex) composition shows a low permeability at 4 hours and 28 days, and a high permeation rate at 1 day.

The rough steel (including roller compaction + latex) composition shows a low permeation rate as a whole compared to the rough steel (general) composition,

The ordinary portland cement (including roller compaction + latex) composition shows a lower total transmission amount than the ordinary portland cement (general) composition, but it can be seen that the higher light transmittance than other experimental variable compositions.

Therefore, the roller compaction method including latex shows a lower permeation result than the concrete composition prepared by the general pouring method, indicating that the concrete has excellent permeability resistance.

In particular, ultrafast mirror (including roller compaction + latex) compositions showed very low transmission results compared to other experimental variables.

On the contrary, it is understood that the composition (roller compaction + latex not included) having a high fluidity during the non-beaming operation of the material due to the poor fluidity of the material caused the material separation.

Example  5

Abrasion test was performed on the concrete composition for emergency repair according to Table 1, the test results are shown in Table 6.

 Experiment variable Abrasion Amount (g / cm ² ) 4 hours 1 day 28 days Carbide (Normal)  0.002  0.001  0.0015 Carbide (with roller compaction + latex)  0.001  0.0005  0.00075 Carbide mirror (with roller compaction + latex)  0.040  0.038  0.010 Joe River (General)  0.0023  0.0012  0.00175 Steel (with roller compaction + latex)  0.0012  0.0006  0.0009 Steel (without roller compaction and latex)  0.042  0.039  0.030 Rough Steel (General)  0.0023  0.0010  0.00165 Ultra-tough steel (with roller compaction + latex)  0.0010  0.0006  0.0008 Rough Steel (Without Roller Compaction + Latex)  0.048  0.042  0.037 Common Portland Cement (General)  0.019  0.009  0.008 Common Portland Cement with Roller Compaction + Latex  0.009  0.005  0.001 Common Portland Cement (With Roller Compaction + Latex)  0.080  0.071  0.041

It can be seen that the composition including the roller compaction and the latex exhibits a significantly lower wear amount than the composition including the normal and the latex, and thus the wear resistance is excellent.

Therefore, the concrete composition for road pavement emergency repair according to the present invention is a slump concrete having no characteristics of fluidity and does not have the consistency of general concrete (kneading machine). Although this was impossible, the present invention is made by the physical compacting method to directly press the concrete composition using construction equipment such as a vibrating roller and a tire roller, so that the interior of the composition is tightly secured and thus additional strength can be obtained. There is an advantage that the curing period can be shortened.

In addition, since the concrete is slumped and slumped, it is not necessary to use additional water or fluidizing agent to secure workability during construction, so it is easy to control quality, and the construction speed is fast and continuous construction is possible, compared to the concrete construction method of the prior art. Excellent workability and economy

In the above description of the present invention with reference to the accompanying drawings, "free road slump concrete composition for emergency repair of damaged road pavement and vibration roller compaction road pavement emergency repair and resurfacing method using the same The present invention has been described for the purpose of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as falling within the protection scope of the present invention.

1 is a graph showing the initial compressive strength and long-term compressive strength test results for the concrete composition according to the present invention,

2 is a graph showing the flexural strength test results for the concrete composition according to the present invention,

3 is a graph showing the results of chlorine ion permeation test for the concrete composition according to the present invention,

Figure 4 is a flow chart schematically showing a construction method using a concrete composition according to the present invention.

Claims (4)

delete delete Chipping for degraded road pavement; The amount of cement is 100 ~ 600㎏ / ㎥ by volume ratio, the unit quantity is 100 ~ 160㎏ / ㎥, fine aggregate 300 ~ 1000㎏ / ㎥, coarse aggregate 500 ~ 1300㎏ / ㎥, latex (latex) for the cement 5 to 15% by weight, CSA clinker (clinker) is prepared by mixing 20 to 50% by weight with respect to the cement using a mobile mixer; Spreading and first compacting the prepared composition using a vibration scraper and a paver; And A second compaction step for securing strength capable of opening traffic in 3 to 4 hours through physical strength enhancement using a vibrating roller compactor; Road pavement emergency repair method, characterized in that made. The method of claim 3, wherein Coating or coating curing agent spraying step in the state where the strength is increased by the first and second compaction, A flattening step using a surface treatment machine while the concrete is cured, and Joint cutting step with cutter after flattening Road paving emergency repair method characterized in that it further comprises.

Images