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    Laboratory Performance Evaluation of a Waterborne Epoxy-Modified Asphalt Mixture with Styrene-Butadiene Rubber for Cold Patching Applications

    Source: Journal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 006::page 04022111
    Author:
    Wei Zhang
    ,
    Zhengqi Zhang
    ,
    Qinsheng Zhao
    DOI: 10.1061/(ASCE)MT.1943-5533.0004242
    Publisher: ASCE
    Abstract: Cold mix asphalt (CMA) is commonly used for repairing asphalt pavement potholes. Ordinary CMA has the problems of poor construction workability and low initial strength in low-temperature environments. To improve pothole repair using CMA in low-temperature environments, a solvent-type cold asphalt liquid (CAL) has been developed and modified by a waterborne epoxy and styrene-butadiene rubber (WER+SBR). First, a low-temperature curing test, compatibility test of WER and SBR latex, and 60°C viscosity test of CAL were conducted and evaluated, and then the type of WER was selected. Second, an orthogonal test with four factors of diluent, WER, SBR, and tackifier was designed to analyze the effects of each factor on 60°C viscosity, adhesion grade, storage stability, and distillation residue of WER+SBR type CAL, and the best raw material ratio was determined. Finally, low-temperature construction workability and road performance of WER+SBR type CMA were evaluated. The results show that EP-20 can be used as the optimal WER for low-temperature type CAL, and the preferable composition of WER+SBR type CAL is SK90# asphalt (100): diluent (26): tackifier (5): WER (4): SBR (2). Compared with ordinary CMA, WER+SBR type CMA is excellent in initial strength, forming strength, high-temperature stability, low-temperature crack resistance, water stability, and low-temperature construction workability. WER+SBR type CMA can be applied to pothole repair in low-temperature environments, which is an important development in improving the repair of asphalt pavement potholes.
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      Laboratory Performance Evaluation of a Waterborne Epoxy-Modified Asphalt Mixture with Styrene-Butadiene Rubber for Cold Patching Applications

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282122
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    contributor authorWei Zhang
    contributor authorZhengqi Zhang
    contributor authorQinsheng Zhao
    date accessioned2022-05-07T20:12:25Z
    date available2022-05-07T20:12:25Z
    date issued2022-03-24
    identifier other(ASCE)MT.1943-5533.0004242.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282122
    description abstractCold mix asphalt (CMA) is commonly used for repairing asphalt pavement potholes. Ordinary CMA has the problems of poor construction workability and low initial strength in low-temperature environments. To improve pothole repair using CMA in low-temperature environments, a solvent-type cold asphalt liquid (CAL) has been developed and modified by a waterborne epoxy and styrene-butadiene rubber (WER+SBR). First, a low-temperature curing test, compatibility test of WER and SBR latex, and 60°C viscosity test of CAL were conducted and evaluated, and then the type of WER was selected. Second, an orthogonal test with four factors of diluent, WER, SBR, and tackifier was designed to analyze the effects of each factor on 60°C viscosity, adhesion grade, storage stability, and distillation residue of WER+SBR type CAL, and the best raw material ratio was determined. Finally, low-temperature construction workability and road performance of WER+SBR type CMA were evaluated. The results show that EP-20 can be used as the optimal WER for low-temperature type CAL, and the preferable composition of WER+SBR type CAL is SK90# asphalt (100): diluent (26): tackifier (5): WER (4): SBR (2). Compared with ordinary CMA, WER+SBR type CMA is excellent in initial strength, forming strength, high-temperature stability, low-temperature crack resistance, water stability, and low-temperature construction workability. WER+SBR type CMA can be applied to pothole repair in low-temperature environments, which is an important development in improving the repair of asphalt pavement potholes.
    publisherASCE
    titleLaboratory Performance Evaluation of a Waterborne Epoxy-Modified Asphalt Mixture with Styrene-Butadiene Rubber for Cold Patching Applications
    typeJournal Paper
    journal volume34
    journal issue6
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0004242
    journal fristpage04022111
    journal lastpage04022111-12
    page12
    treeJournal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 006
    contenttypeFulltext
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