LU501454B1

LU501454B1 - FTPR-1, a special semi-rigid base layer composite

Info

Publication number: LU501454B1
Application number: LU501454A
Authority: LU
Inventors: Ermao Zhang; Jianguo Hu; Tianzhi Hao; Yuchun Lu; Junhui Luo; Haifeng Huang
Original assignee: Guangxi Beitou Transp Maintenance Technology Group Co Ltd; Nanning Expressway Construction & Dev Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-08-11

Abstract

The invention discloses A permeable adhesive layer composite material (FTPR-1) specially used on the semi-rigid base layer, which comprises A, B, and C components, wherein A component consists of 20~40 parts of base asphalt, 0.2~0.8 parts of emulsifier, and 45~75 parts of water; Component B consists of 4 to 16 aromatic oxygen-containing compounds. Component C is 5 composed of the following two mass components: modifier 1~3 parts, calcium stearate 5~10 parts; The mass component ratio between A and B is 24:1-21:4, and the mass component ratio between the total mass of A and B and C is 100:13-100:6. The permeable adhesive layer composite material specially used for semi-rigid base layer has the advantages of low price, simple construction process, good permeability, adhesion, water resistance, and no environmental pollution, and has broad 10 market application prospect

Description

FTPR-1, a special semi-rigid base layer composite LUS01454 Technical field The invention relates to a permeable adhesive layer composite material specially used for the semi-rigid bases, belonging to the technical field of road materials. Technical background At present, semi-rigid base asphalt pavement is widely used in road construction in Our country. More than 95% of the highways built in our country are semi-rigid base asphalt pavement. To ensure that the asphalt surface and the semi-rigid base can be well combined and have a certain bonding effect, the specification stipulates that a permeable material should be set between the asphalt surface and the semi-rigid base.

After the construction, the permeable material will have a certain depth of penetration on the semi-rigid base. In the penetration depth, the organic material (asphalt) fills the surface gap of the semi-rigid base, which can play a good transition coupling role between the organic bond and the inorganic bond structure layer, forming a special coupling layer. The coupling layer facilitates the transition from the base to the asphalt surface, increases the adhesion between the non-asphalt base and the asphalt surface, fills the pores on the base surface, and binds together aggregates that may be loose on the base surface. It can prevent the base from being permeable, solidify the base surface, and make the semi-rigid base well connected with the asphalt surface.

In the early days, coal tar, residuum, and other materials were mostly used as permeable layer materials. When such materials were used, their disadvantages, such as strong toxicity, unstable quality, serious environmental pollution, harm to human health and safety, and cost of labor and time, were the main reasons hindering the continued use of such materials. At present, most of the permeable layer materials are emulsified asphalt and diluted asphalt, etc. When such materials are used, their permeability, cohesiveness, and waterproofness are poor. Therefore, it is necessary to develop a kind of semi-rigid base layer composite material with high permeability, high adhesion, high water resistance, and environmental protection.

The invention content The present invention is aimed at the deficiency of traditional transparent layer material and proposes a transparent layer composite material specially used for the semi-rigid bases.

To achieve the above purposes, the invention adopts the following technical scheme: The utility model relates to A permeable viscous layer composite material specially used for the semi-rigid base layer, which is characterized in that it comprises component A, component B, and component C, wherein: Component A consists of the following mass components: base asphalt 20~40 parts, alkyl- 1 benzene sulfonate 0.2~0.8 parts, water 45~75 parts; LUS01454 Group B was divided into aromatic oxygen-containing compounds, and the mass group was divided into 4-16 components.

C component is composed of two mass components: 1~3 parts of styrene-butadiene latex or neoprene latex, 5-10 parts of calcium stearate; The mass component ratio between A and B is 24:1-21:4, and the mass component ratio between the total mass of A and B and C is 100:13-100:6.

The above A component is the spraying main body, as the adhesion carrier of the osmotic agent, B component is used to improve the permeability of asphalt, C component plays A role of modification and stability, which modifier is used to improve adhesion and high and low- temperature performance, calcium stearate to ensure the stability of finished products.

Matrix asphalt selection AH70 or AH90 two, used as an adhesive carrier of the osmotic agent; The surfactant sodium alkyl-benzene sulfonate, such as PC2, DF42E, is used to improve the activity of matrix asphalt to ensure the smooth reaction of matrix asphalt; The penetration agent for aromatic oxygen-containing compounds can penetrate the cement concrete pores 3mm ~ Smm depth, curing can not only repair the cement concrete surface defects but also plug the capillary seepage hole, play a good waterproof effect; Permeate at the same time to form a nail effect, firmly adhere to the cement concrete surface layer. It can effectively prevent the peeling and peeling of the waterproof layer and is not easy to be damaged by construction vehicles and paving equipment.

The calcium stearate should have good stability, melting point of more than 150°C, the

0.075mm square hole sieve pass rate is greater than 90%, to stabilize the effective release time of osmotic agent; The invention is accomplished according to the following steps:

1. Fully and uniformly dissolve 4-16 parts of aromatic oxygen-containing compounds and 45-75 parts of 60-80 °C clean water in the container;

2. Add 0.2 to 0.8 parts of sodium alkyl benzenesulfonate to the mixture in Step 1 to disperse it evenly, and adjust the PH value of the solution with a small amount of concentrated hydrochloric acid to control the range between 1 and 4;

3. Flush the funnel of the high-speed shear instrument with the proper amount of hot water in advance, and then close the outlet valve;

4. Pour the evenly mixed solution in Step 2 into the funnel of the high-speed shear meter, turn on the switch of the high-speed shear meter, and evenly pour 20 to 40 parts of 130 to 150°C base asphalt into the high-speed shear meter, shear time is controlled in the 30s to 60s, and then open the water outlet valve to collect semi-finished products; 2

5. Transfer the preliminary semi-finished products to the low-speed development machine-#RQ1454 then add 1~3 parts of styrene-butadiene latex and 5~10 parts of calcium stearate to it, rotate at low speed at 800~1000 RPM /min, control the time at 3~5min, and then transfer the finished products to the container immediately, sealed to get the product.

The method of using the product for the permeable viscous composite material of the semi-rigid base is as follows: the road surface layer sprayed by the product shall be cleaned in advance, and then sprayed by the emulsified asphalt sprayer with the thickness controlled at 1~2mm. After the emulsified asphalt is demulsified, it can be opened to traffic.

The mechanism of action of the product: sprayed on the semi-rigid base, the penetration material can penetrate the capillary hole of cement concrete 3mm ~ Smm depth, can repair the surface micro-defects of cement concrete after curing, can also plug the capillary seepage hole, play a good waterproof effect; Permeate at the same time to form a nail effect, firmly adhere to the cement concrete surface layer. It can effectively prevent the peeling and peeling of the waterproof layer and is not easy to be damaged by construction vehicles and paving equipment.

Under the action of high temperature (higher than 100°C) asphalt concrete, the preliminary solidified waterproof bond layer will produce micro-dissolution distribution. Under the action of rolling, the large aggregate particles are embedded in the waterproof bond layer, forming a uniform distribution of shear keys. After cooling, the cohesion of the elastic-plastic waterproof bond layer is further improved, and the bond and shear strength reach above 0.8mpa at the same time, which perfectly combines the semi-rigid base layer with the asphalt layer below into a stressed whole.

The positive effects of the invention are as follows: the composition of the product is cheap, the production process is simple, the construction is simple, the infiltration effect, the bonding effect, and the waterproof effect are remarkable, and the product has the value of popularization and application.

Specific implementation mode This invention further combining with the example below, but not so will scope of the implementation of the limitation of the present invention in the above example, in a departure from the technical solution of the present invention, the invention of this general technical personnel easy to implement in the field of any changes or change will fall into the invention claims scope.

Implementation example 1 Component A: 30 parts AH70 base asphalt, 0.5 parts alkyl benzene sulfonate sodium, 70.5 parts water; Component B: 9 parts aromatic oxygen-containing compounds; Component C: 2 parts neoprene latex, 6 parts calcium stearate.

Implementation example 2 3

Component A: 40 parts AH70 base asphalt, 0.7 parts alkyl benzene sulfonate sodium, 43981454 parts water; Component B: 10 parts aromatic oxygen-containing compounds, 6 parts magnesium sulfate; Component C: 3 parts styrene-butadiene latex, 8 parts calcium stearate Example 3 Component A: 25 parts AH90 base asphalt, 0.5 parts alkyl benzene sulfonate sodium, 66.5 parts water; Component B: 8 parts aromatic oxygen-containing compounds; C component: 3 parts neoprene latex, 10 parts calcium stearate.

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Claims

1. The characteristics of the bonding layer composite material specially used on the semi-kig381454 base layer are as follows: it includes component A, component B, and component C, wherein: Component A consists of the following mass components: base asphalt 20-40 parts, alkyl-benzene sulfonate 0.2~0.8 parts, water 45-75 parts; Component B is composed of aromatic oxygen-containing compounds, and its mass fraction is 4-16.

C component includes two mass components: butadiene latex or neoprene latex 1-3, 5 to 10 calcium stearate; The mass component ratio between A and B is 24:1-21:4, and the mass component ratio between the total mass of A and B and C is 100:13-100:6.

2. According to the permeable adhesive layer composite material specially used for the semi-rigid base layer in Claim 1, its characteristics are as follows: the sprayer permeable adhesive layer composite material is an emulsified asphalt developed after the matrix asphalt is pretreated with an appropriate amount of permeable agent and sodium alkyl-benzene sulfonate, and then the modifier and stabilizer are added.

3. According to the permeable adhesive layer composite material specially used for semi-rigid base according to Claim 1, its characteristics are as follows: the asphalt generally adopts heavy AH70 or AH90 base asphalt.

4. According to the characteristics of the permeable layer composite material specially used on the semi-rigid base layer of Claim 1, the said alkyl benzenesulfonate sodium adopts anionic surfactant, which is required to have a long stability time.

5. According to the permeable adhesive layer composite material specially used on the semi-rigid base layer of Claim 1, its characteristics are: said penetrant is aromatic oxygen-containing compound.

6. According to the permeable adhesive layer composite material specially used for the semi-rigid base layer in Claim 1, its characteristics are: the said modifier can use styrene-butadiene latex or neoprene latex and other modifiers.

7. According to the permeable layer composite material dedicated to the semi-rigid base layer of Claim 1, its characteristics are: the calcium stearate has good hydrophobic stability, the melting point is required to be above 150°C, and the pass rate of 0.075mm square hole sieve is greater than 90%;

8. According to claim 1, the preparation method of the permeable adhesive layer composite material specially used on the semi-rigid base layer includes the following steps: 1) Fully and uniformly dissolve 4-16 parts of aromatic oxygen-containing compounds and 45-75 parts of 60-80 °C clean water in containers; 5

Claims 2) Add 0.2 to 0.8 parts of sodium alkyl-benzene sulfonate into the mixture of step 1 to dispéts21454 it evenly, and adjust the PH value of the solution with a small amount of concentrated hydrochloric acid to control between 1 and 4; 3) Flush the funnel of the high-speed shear instrument with appropriate hot water in advance, and then close the outlet valve; 4) Pour the evenly mixed solution in Step 2 into the funnel of the high-speed shear tester, turn on the switch of the high-speed shear tester, and evenly pour 20 to 40 parts of 130~150C base asphalt into the tester, shear time is controlled in the 30s to 60s, and then open the water outlet valve to collect semi-finished products; 5) Transfer the preliminary semi-finished products to the low-speed development machine, and then add 1~3 parts of styrene-butadiene latex and 5~10 parts of calcium stearate to it, rotate at low speed at 800~1000 RPM /min, control the time at 3~5min, and then transfer the finished products to the container immediately, seal the product.

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