Caulking asphalt for roads and bridges, and preparation method for caulking asphalt

Abstract

The invention discloses caulking asphalt for roads and bridges. The caulking asphalt is prepared from the following raw materials in percentage by mass: 60 to 85 percent of base asphalt, 5 to 15 percent of polymer A, 0 to 15 percent of polymer B, 3 to 10 percent of compatilizer and 0 to 3 percent of stabilizing agent. The caulking asphalt product for the roads and bridges is appropriate in needle penetration, high in softening point, heat resistance and extension, and flexibility at low temperature, and good in elastic recovery performance, is insoluble, and waterproof, does not flow at high temperature, and is resistant to impact at low temperature, does not crack and has high durability, and sandstone and sundries are prevented from being embedded into the caulking asphalt,; and the invention also discloses a preparation method for the caulking asphalt, and the preparation method is novel and simple, and is low in cost.

Description

technical field [0001] The invention relates to asphalt and a preparation method thereof, in particular to road and bridge caulking asphalt and a preparation method thereof. Background technique [0002] At present, caulking and sealing materials have relatively mature technology and equipment abroad, and have also been widely used. However, the research and production of caulking and sealing materials in my country are still in the exploratory stage, and the quality is far behind that of foreign developed countries. The production technology is far from mature, and commercial production has not yet been formed. At present, the caulking and sealing materials used in China are generally 10 # Construction asphalt or ordinary road asphalt, these joint sealing materials have poor high and low temperature performance and are easy to fall off. They cannot effectively prevent rainwater from leaking into the base layer from the joints and prevent sand and gravel debris from being e...

AI Technical Summary

Problems solved by technology

However, the research and production of caulking and sealing materials in my country is in the exploratory stage, and the quality is far behind that of foreign developed countries. The production technology is far from mature, and commercial production has not yet been formed.

At present, the caulking and sealing materials used in China are generally 10 # Construction asphalt or ordinary road asphalt, these joint sealing materials have poor high and low temperature performance and are easy to fall off. They cannot effectively prevent rainwater from leaking into the base layer from the joints and prevent sand and gravel debris from being embedded in the joints to cause damage to the concrete panels, etc., seriously It affects the quality and service life of the road bridge deck, which is also the reason why new bridges and concrete roads have problems at the joints of the road bridge deck shortly after use

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