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Research on High Dosage of Crumb Rubber Modified Asphalt

Author: LiLiLi
Tutor: DongRuiZuo
School: Chongqing University
Course: Traffic and Transportation Engineering
Keywords: Asphalt Crumb Rubber Rubber asphalt Activation Modification Mechanism
CLC: U414
Type: Master's thesis
Year: 2011
Downloads: 82
Quote: 0
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Abstract


At present, China has become the tire production and consumption country, China's tire production was strong speed growing waste tire belongs to industrial hazardous solid waste, it is difficult to deal with one of the varieties of solid waste pollute the environment for a year to produce a large number of waste tires in his own non-degradable, non-disintegration of the chemical characteristics, regardless of stacked landfill or incineration treatment will bring new pollution, how to solve this prominent scrap tire environmental plague problem has Having caused attaches great importance to the world. The rapid development of highway construction, our country must invest huge funds annually to meet the demand of highway construction. Production of waste tires into Crumb Rubber as road asphalt modifier, to be fully utilized in the highway construction is internationally recognized as the best way harmless, treatment resources. In this study, the current situation of the development of rubber asphalt material for the low utilization rate of the existing waste rubber powder rubber asphalt technology, process and serious environmental pollution, the road performance improvement and limited research. The main contents include: analysis of the raw material of rubber asphalt; rubber asphalt modification mechanism; rubber asphalt activation method selection; activation of the testing and analysis of the performance of rubber asphalt. By various activated of rubber asphalt raw materials, components and performance analysis, the study of various reaction principle, initially described the reaction mechanism of activation of rubber asphalt; different activation activation rubber asphalt performance tests, including needle penetration, softening point, 5 ° C ductility, viscosity, elastic recovery, performance analysis of rubber asphalt test results to determine the activation method suitable the high volume rubber asphalt to use the rubber asphalt, and through the activation under different conditions. The rubber asphalt test results to determine the waste rubber powder dosage the high dosage rubber asphalt. The results show that activation using waste oil, rubber asphalt performance prepared in the use of sodium hypochlorite activated rubber powder rubber asphalt than ordinary rubber asphalt performance in all aspects have been improved, activated rubber powder dosage can reach 33%; a large degree of improvement, activated rubber powder dosage up to 49%, and because of the particularity of the waste oil, activation method is simple and feasible, practical value. Finally, a summary of the research results. And use the test phenomenon in the course of the study and test conclusions further research direction of the high dosage rubber asphalt.

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