Emulsified bitumen crack pouring material

A joint filling material and emulsified asphalt technology, which is applied in building insulation materials, other chemical processes, chemical instruments and methods, etc., can solve the problems of no obvious improvement in asphalt performance, and achieve the improvement of asphalt softening point, good penetration and bonding properties, increasing high temperature stability and elastic recovery

Active Publication Date: 2011-08-31
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no chemical reaction between the powder material and the asphalt, and it is only a simple mixing and filling of the asphalt, which does not significantly improve the performance of the asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Component A: Mix 0.8g polyacrylic acid stabilizer, 7.5g octadecyltrimethylammonium chloride, 40g styrene-butadiene latex modifier and 105.8g water, mix well and control the temperature at 55-60℃, add 6g of hydrochloric acid pH adjuster, and then process the above mixed solution and 236g of 70# asphalt at 130-140°C in a colloid mill for 1-1.5min to obtain component A. The control speed is 3000~10000rpm.

[0034] Component B: 100g CaO coagulant in bags.

[0035] When in use, mix and stir components A and B evenly on site, and then the joint filling construction can be carried out.

Embodiment 2

[0037] Component A: Mix 0.6g polyvinyl alcohol stabilizer, 8.2g N-oleyl-1,3-propylenediamine, 38g chloroprene latex modifier and 166.9g water and stir evenly and control the temperature at 55- 60°C, add 6g of oxalic acid pH adjuster, then process the above mixed solution and 325g of 130-140°C 70# asphalt in a colloid mill for 1-1.5min to obtain component A. The control speed is 3000~10000rpm.

[0038] Component B: 100gSiO 2 or P 2 o 5 Coagulant bagged.

[0039] When in use, mix and stir components A and B evenly on site, and then the joint filling construction can be carried out.

[0040] Example performance indicators:

[0041] Performance

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PUM

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Abstract

The invention relates to an emulsified bitumen crack pouring material, wherein A component comprises 40 to 60% of No.70 bitumen, 1 to 2% of emulsifier, 18 to 30% of water, 1 to 1.8% of modifier, 0.1 to 1% of stabilizer and 0.1 to 2% of pH conditioning agent, the emulsifier is one or more selected from quaternary ammonium salt, fatty amine, lignin amine, imidazoline or amide, the modifier is one or more selected from styrene butadiene latex, neoprene latex or styrene-butadiene-styrene latex, the stabilizer is one or more selected from calcium chloride, sodium phosphate, polyacrylic acid, polyvinyl alcohol or methyl cellulose, and the pH conditioning agent is one or more selected from hydrochloric acid, sulfuric acid, phosphoric acid or oxalic acid; and B component is 11 to 30% of coagulating agent, the coagulating agent is inorganic active powder, particle size of which is between 0.001 and 0.1mm, and the coagulating agent is one or more selected from CaO, SiO2 or P2O5. The crack pouring material has strong cohesiveness and good elasticity recovery performance.

Description

technical field [0001] The invention relates to an emulsified asphalt joint filling material used for sealing and maintenance of asphalt pavement cracks. Background technique [0002] Emulsified asphalt joint grout is made of emulsified asphalt. Because emulsified asphalt has good fluidity, it can penetrate into deep and small cracks. After the emulsion is broken, the water evaporates to achieve the purpose of repairing cracks. Compared with hot asphalt joint repair, emulsified asphalt joint repair is easier to pour into the depth of the crack, without heating, simple construction, low technical requirements for construction personnel, and more cost-effective while reducing environmental pollution. With the rapid development of emulsified asphalt research and application, emulsified asphalt-type cold grouting joint materials have been widely used in road crack repair, and various emulsified asphalt grouting materials continue to emerge. [0003] CN1962526A provides a road p...

Claims

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Application Information

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IPC IPC(8): C09K3/10C08L95/00
Inventor 苏震黄烁张烨李卓刘玮婧
Owner PETROCHINA CO LTD
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