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Organic bentonite composition modified emulsified asphalt and its preparing method

A technology for emulsified asphalt and bentonite, which is applied in building structures, building components, building insulation materials, etc., can solve the problems of high cost, complex production, and poor comprehensive performance of emulsified asphalt modifiers, and achieves extended service life, The effect of saving energy and shortening the time of closing traffic

Inactive Publication Date: 2006-03-08
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In short, the comprehensive performance of the above-mentioned emulsified asphalt modifiers is not very good, and the cost is relatively high, and the production is relatively complicated

Method used

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  • Organic bentonite composition modified emulsified asphalt and its preparing method
  • Organic bentonite composition modified emulsified asphalt and its preparing method
  • Organic bentonite composition modified emulsified asphalt and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 1 part of organic bentonite with a particle size of 19 microns to a solution of 0.1 part of thickener and 5 parts of water, stir evenly, add hydrochloric acid to acidify to pH 4, leave it for 20 hours, and set aside; add 0.6 parts of cationic emulsifier, 3 parts of styrene-butadiene latex and 30 parts of water are stirred and mixed evenly, and hydrochloric acid is added to adjust the pH value to 5, then heated to 55°C, and mixed and emulsified with 60 parts of base asphalt heated to 120°C through an emulsifier, and the above-mentioned The prefabricated organic bentonite and thickener mixture are mixed evenly and left to stand for automatic defoaming to make products. The measured 25-degree Engela viscosity is 10.1, the remaining amount (%) on the sieve is 0.08, the 1-day storage stability (%) is 0.5, the 5-day storage stability (%) is 3.2, and the residue 5-degree ductility (5 cm / min, 5°C, cm) is 85, 25 degree penetration (25°C, 100 g, 5 seconds, 0.1 mm) is 75, soft...

Embodiment 2

[0026] Add 2 parts of organic bentonite with a particle size of 74 microns to a solution of 0.1 part of thickener and 6 parts of water, stir evenly, add hydrochloric acid to acidify to a pH value of 5, leave it for 30 hours, and set aside; add 0.7 parts of cationic emulsifier, 2 parts of styrene-butadiene latex and 36.4 parts of water are stirred and mixed evenly, and hydrochloric acid is added to adjust the pH value to 6, and then heated to 65°C, and then mixed and emulsified with 62 parts of base asphalt heated to 130°C through an emulsifier, and the above-mentioned The prefabricated organic bentonite and thickener mixture are mixed evenly and left to stand for automatic defoaming to make products. The measured 25-degree Engela viscosity is 10.4, the remaining amount (%) on the sieve is 0.03, the 1-day storage stability (%) is 0.5, the 5-day storage stability (%) is 0.8, and the residue 5-degree ductility (5 cm / min, 5°C, cm) is 44.6, 25 degree penetration (25°C, 100 g, 5 sec...

Embodiment 3

[0028] Add 3 parts of organic bentonite with a particle size of 35 microns to a solution of 0.2 parts of thickener and 7 parts of water, stir evenly, add hydrochloric acid to acidify to pH 4, leave it for 24 hours, and set aside; add 0.8 parts of cationic emulsifier, 4 parts of styrene-butadiene latex and 32 parts of water are stirred and mixed evenly, and hydrochloric acid is added to adjust the pH value to 6, and then heated to 58°C, and then mixed and emulsified with 61 parts of base asphalt heated to 124°C through an emulsifier, and the above-mentioned The prefabricated organic bentonite and thickener mixture are mixed evenly and left to stand for automatic defoaming to make products. The determined 25-degree Engela viscosity is 9.4, the remaining amount (%) on the sieve is 0.02, the 1-day storage stability (%) is 0.7, the 5-day storage stability (%) is 3.0, and the residue 5-degree ductility (5 cm / min, 5°C, cm) is 58.5, 25 degree penetration (25°C, 100 g, 5 seconds, 0.1 m...

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Abstract

The invention relates to an organobentonite composition modified emulsified bitumen and its preparing method. The bitimen is composed of 60-62 protions base bitumen,34-36.4 protions water,0.5-0.8 protions cationic emulsifier,1-3 protions organobentonite,2-4 protions butadiene styrene latex,0.1-0.2 protions thickening agent.Its prparing method comprises: mixing emulsifier solution uniformly, then mixing and emulsifying with base bitumen by emulsifying machine, then adding organobentonite and thickening agent to emulsified bitumen, mechanically stirring, mixing uniformly and deforming to obtain modified emulsifier bitumen. The invention has advantages of fine capability, high production efficiency, easy control, convenient operation and low cost.

Description

technical field [0001] The invention relates to a composition-modified asphalt and a preparation method thereof, in particular to an organic bentonite composition-modified emulsified asphalt and a preparation method thereof. Background technique [0002] At present, the emulsified asphalt modifiers developed and applied at home and abroad are mainly styrene-butadiene latex and neoprene latex. SBR latex is a main material in emulsion modification. It can significantly improve adhesion, crack resistance and low temperature ductility, but the high temperature stability is not significantly improved. The performance of chloroprene latex is similar to that of styrene-butadiene latex, but its thermoplasticity is slightly higher than that of styrene-butadiene latex, and its stability is also poor. Ethylene vinyl acetate latex is a kind of resin modifier, which can improve the softening point and flow resistance, but it does not improve the low temperature performance significantly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/03C08K3/34
Inventor 王云普刘东杰张继王有鹏
Owner NORTHWEST NORMAL UNIVERSITY
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