Emulsified asphalt cement mortar for crts I type slab ballastless track and preparation method thereof
A technology for slab ballastless track and emulsified asphalt, which is applied in the field of emulsified asphalt cement mortar for high-speed railways, can solve problems such as complex composition, and achieve the effects of good compatibility, simple equipment, and improved low-temperature performance.
Active Publication Date: 2016-08-31
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
Chinese patent CN101058493B emulsified asphalt cement mortar also contains cationic neoprene latex, fly ash, redispersed latex powder, lignocellulose and cellulose ether, etc., and the composition is relatively complicated
The emulsified asphalt cement mortar of Chinese patent CN1858016A is only suitable for use in warm areas
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[0031] Below in conjunction with embodiment the present invention is further described.
[0032] The present invention has prepared 3 different modified emulsified asphalts, the preparation method is the same, modified emulsified asphalt 1# is made up of the following raw materials in mass parts: 60 parts of 90# heavy traffic asphalt, 5 parts of styrene-butadiene latex, styrene-acrylic acid 5 parts of ester copolymer emulsion, 3 parts of compound emulsifier (0.5 parts of non-ionic emulsifier octylphenol polyoxyethylene ether op-10, 2 parts of cationic emulsifier octadecyltrimethylammonium chloride 1831, cationic emulsifier Agent aminated lignin RH-C01 is 0.5 parts), calcium chloride 1 part, hydrochloric acid 0.3 parts, water 35 parts.
[0033] The preparation method of modified emulsified asphalt is:
[0034] After the compound emulsifier is dissolved in water at 60±5°C, add styrene-butadiene latex, styrene-acrylate copolymer emulsion, and stabilizer in sequence, and then add...
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The invention belongs to the technical field of emulsified asphalt cement mortar for high-speed railway, and particularly relates to emulsified asphalt cement mortar for a CRTS I-type slab ballastless track and a preparation method thereof. The emulsified asphalt cement mortar comprises the following raw materials in parts by mass: 380-415 parts of modified emulsified asphalt, 800-880 parts of a dry powdery material, 25-36 parts of water, 0.11-0.3 part of a defoaming agent and 0.3-2 parts of an air entraining agent. The prepared emulsified asphalt cement mortar for the CRTS I-type slab ballastless track uses the modified emulsified asphalt containing styrene-butadiene latex and resin emulsion, so that the low temperature performance of the asphalt is improved, and the fluidity, the early strength, the frost resistance and the weatherability of CA mortar are improved; compared with the prior art, the emulsified asphalt cement mortar for the CRTS I-type slab ballastless track has the characteristics of simplicity and convenience in preparation process as well as simple equipment; the service life of the ballastless track paved by the emulsified asphalt cement mortar is prolonged.
Description
technical field [0001] The invention belongs to the technical field of emulsified asphalt cement mortar for high-speed railways, and in particular relates to an emulsified asphalt cement mortar for CRTSI type slab ballastless track and a preparation method thereof. Background technique [0002] In the development process of high-speed railway ballastless track, the more perfect technology is Japan's slab ballastless track, CRTS I type, and Germany's slab ballastless track, CRTS II type, both of which require emulsified asphalt cement mortar, namely CA (cementasphalt mortar) Mortar as a cushion. CA mortar is made by mixing cement, fine aggregate, aluminum powder, mixture and other powders, emulsified asphalt, water, defoamer, air-entraining agent and other liquids and other admixtures through a specific process. Mortar is a new type of semi-rigid organic-inorganic composite material, which not only has certain elasticity, but also has certain strength. It plays the role of l...
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IPC IPC(8): C04B28/04C04B24/36C04B24/26
Inventor 高淑美贾丽凤许金山刘爱华马鹏程王建华赵双霞张敬义
Owner CHINA PETROLEUM & CHEM CORP