【摘 要】
：
To address the need for producing a cheap, single-component, hot-applied compound joint sealant with high quality for sealing joints and cracks in concrete and
【机 构】
：
School of Transportation Science and Engineering
论文部分内容阅读
To address the need for producing a cheap, single-component, hot-applied compound joint sealant with high quality for sealing joints and cracks in concrete and flexible pavements without using primer for instal-lation, a hot-applied modified asphalt sealant was produced by blending up about 30% starch into 20% citric acid. The starch and the asphalt cement were mixed at a temperature of above 160 ℃. Thus the waterproofing asphalt was manufactured to protect the surface of various shapes and types from water leakage using the citric acid. Results indicate that this sealant complies with the requirements of ASTM D-1191, D-6690-O6a and D-7116-05. The citric acid is a kind of reliable materials for asphalt cement, which can be widely used in paving and waterproofing construction materials, and this offers profound engineering and economic advantages.
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