Caulking filling material easy for construction and preparation method thereof

Abstract

The invention provides a caulking filling material easy for construction and a preparation method thereof. The caulking filling material is composed of 100 parts of petroleum asphalt, 5-20 parts of extract oil containing rich aromatic hydrocarbon, 3-20 parts of styrene-butadiene-styrene block polymer (SBS), 1-8 parts of ethylene bis stearamide (EBS) and 0.1-0.3 part of crosslinking agent. The preparation method comprises the following steps: heating to melt asphalt, adding the extract oil, SBS and EBS, carrying out shear mixing, adding the crosslinking agent, and evenly mixing to obtain the caulking filling material easy for construction. The caulking filling material provided by the invention has favorable high and low temperature properties; by adding the EBS, the caulking filling material has favorable flow resistance at service temperature, and the crack pouring construction temperature of the caulking filling material is obviously lowered; and the caulking filling material is easy for construction, lowers the energy consumption, decreases the emissions of smoke and other harmful gases, reduces the environmental pollution, and can be used for pavement and repair of expansion joints and cracks in bridge roads.

Description

technical field [0001] The invention relates to a caulking filling material which is easy to construct and a preparation method thereof. The caulking filling material can be used for paving and repairing expansion joints and cracks on bridge pavement. Background technique [0002] The bridge expansion joint is an important part of the bridge structure, and the performance of the bridge expansion joint directly affects the service life of the bridge and the driving comfort. Filled bridge expansion joints are a new type of bridge expansion joints. Its main working mechanism is to rely on the elasticity of the mixture of high-elastic special asphalt binder and stone to adapt to the displacement of the bridge end due to temperature and traffic loads. At the same time, it is favored by bridge builders because it has many advantages such as simple construction, low cost, comfortable driving, long service life, and half-width construction without interrupting traffic. [0003] CN1...

AI Technical Summary

Problems solved by technology

Due to the high addition of styrene-butadiene-styrene block copolymer, the product viscosity is relatively high, and the construction of joint filling is difficult, requiring a higher construction temperature for joint filling, which in turn increases the energy consumption of joint filling construction. and smog and other harmful gas emissions, which is not conducive to environmental protection