Anti-crack modifying agent used for asphalt

Abstract

The invention discloses an anti-crack modifying agent used for asphalt. The anti-crack modifying agent is prepared from following raw materials, by weight, 1.2 to 2.8 parts of tetrasodium ethylenediamine tetraacetate, 1.5 to 3 parts of aramid fiber, 2.3 to 3.7 parts of decabromodiphenyl ether, 5 to 10 parts of toluenesulfonic acid, 1.2 to 1.8 parts of phenylalanine, 0.8 to 1.7 parts of acetic acid lignin, and 0.5 to 1.2 parts of polymethacrylate. The anti-crack modifying agent is suitable for all petroleum asphalts; adding amount is small; adding of the anti-crack modifying agent with an amount accounting for 2 to 3% of the amount of asphalt is capable of reducing viscosity and modifying preferably; mixing is sample to realize; separation is not caused; no special equipment is needed; dispersing performance is excellent; the anti-crack modifying agent possesses acid resistance, alkali resistance, and excellent water resistance, is capable of resisting high temperature rut and low temperature cracking; construction workability is high; paving temperature can be reduced about 30 DEG C; adhesive force on aggregate is increased; toxic dust emission is reduced; the anti-crack modifying agent is beneficial for environment protection, can be used for improving working environment of operators, reducing labor intensity, and is beneficial for health of operators.

Description

technical field [0001] The invention relates to an anti-crack modifier for asphalt, which belongs to the field of building materials. Background technique [0002] At present, the asphalt pavement mainly has problems such as road softening and oil flooding in summer, severe rutting and waves, and cracking at low temperature in winter. In order to improve the quality of asphalt pavement, with the development of highway traffic, the concept of asphalt modifier has been accepted by people, and modified asphalt has been more and more widely used. In the existing technology, the most used asphalt modifiers in China are SBS and PE, but both of them are not easy to be compatible with asphalt when used, require special shearing equipment and high energy consumption, and are easy to construct and operate. Poor performance, a lot of waste smoke and gas are produced during construction, causing environmental pollution and endangering the health of operators. At the same time, the cool...

AI Technical Summary

Problems solved by technology

In the existing technology, SBS and PE are the most widely used asphalt modifiers in China, but both of them are not easy to be compatible with asphalt when used, require special shearing equipment and high energy consumption, and are easy to construct and construct. Poor performance, a lot of waste smoke and gas are produced during construction, causing environmental pollution and endangering the health of operators. At the same time, the cooling speed is slow, prolonging the opening time, which is extremely unfavorable to traffic construction