Non-cured rubber asphalt waterproof material and preparation method thereof

Abstract

The invention discloses a non-curing rubber asphalt waterproof material and a preparation method thereof. The non-curing rubber asphalt waterproof material comprises raw materials in parts by weight as follows: 30-70 parts of base asphalt, 15-40 parts of waste tire rubber powder, 0.25-1.0 part of a desulfurizing agent, 0.8-4 parts of a composite modifier, 0.5-5 parts of a softening agent, 0.25-3 parts of a cross-linking agent and 5-15 parts of filler, wherein the grain size of the waste tire rubber powder is 20-80 meshes. The preparation method comprises steps as follows: raw material preparation, hot melting and mixture homogenization are performed; finally, the cross-linking agent and the filler in parts by weight are sequentially added to a storage tank and are stirred and mixed for 15-20 min, and the non-curing rubber asphalt waterproof material is formed. The waste tire rubber powder is directly subjected to circular shearing desulfurization by a high-shear homogenizer under the action of the desulfurizing agent in a high-temperature asphalt medium, rubber molecules are uniformly dispersed in an asphalt system in a linear structure manner and then form a stable stereoscopic meshed rubber structure with the filler under the action of the cross-linking agent, and the product performance is more stable.

Description

technical field [0001] The invention relates to the technical field of waterproof building materials, in particular to a non-cured rubber asphalt waterproof material and a preparation method thereof. Background technique [0002] According to incomplete statistics, in 2014, the amount of waste tires produced in my country reached tens of millions of tons, and large-scale waste tires caused serious black pollution to the living environment of human beings. Harmless treatment and utilization of waste tires is an urgent need for social development [0003] At present, it has become a development trend in the transportation industry to use waste tire rubber powder as an asphalt modifier for road construction and maintenance, but it is limited to the current technical level, or the simple swelling and mixing of rubber powder and asphalt, and the rubber powder only exists as a filler If it is used in the asphalt system, its performance cannot be fully exerted; or the modification...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing non-cured rubber asphalt waterproof material, which can avoid the disadvantages of complex process and high cost caused by desulfurization of waste tire rubber powder before use in conventional production, At the same time, it avoids the defect that the performance of the waste tire rubber powder can not be fully exerted due to the direct miscibility of the asphalt.

Images