不硫化橡胶改性沥青材料在变形缝处的防水性能

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2021-06-15 DOI:10.1080/14488353.2021.1930639
Zhiqiang Wang, Z. Lei
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引用次数: 1

摘要

摘要为了研究不可固化橡胶改性沥青材料在变形缝处的防水性能,通过试验模拟了不可固化胶改性沥青在变形缝中的灌浆情况,研究了在恒定水压作用下变形缝的最大开度,并对相应的防水性能进行了评价。结果表明,在0.25MPa、0.3MPa和0.4MPa的水压下,不固化橡胶改性沥青材料可承受的变形缝宽度分别为11.5mm~12mm、11mm~11.5mm和10mm~11mm。同时,进一步阐明了不同水压下变形缝的破坏类型。当水压高时,如果变形缝漏水,可能会沿变形缝的方向出现裂缝,从而导致变形缝失效,并沿变形缝方向逐渐扩大失效范围。当水压较低时,裂缝发生的概率较小,破坏范围相对有限。该研究对隧道工程防水具有重要的指导意义。
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Waterproof performance of non-curable rubber modified asphalt material at deformation joints
ABSTRACT In order to study the waterproof performance of non-curable rubber modified asphalt material at deformation joints, the grouting situation of non-curable rubber modified asphalt material in the deformation joint was simulated through the test, the maximum opening amount of deformation joint under the action of constant water pressure was studied, and the corresponding waterproof performance was evaluated. The results show that under water pressures of 0.25 MPa, 0.3 MPa and 0.4 MPa, the widths of deformation joints that the non-curable rubber modified asphalt material can bear are about 11.5 mm ~ 12 mm, 11 mm ~ 11.5 mm and 10 mm ~ 11 mm, respectively. Meantime, the failure types of deformation joints under different water pressures are further clarified. When the water pressure is high, if there is water leakage in the deformation joint, cracks may appear along the direction of deformation joint, which will lead to the failure of deformation joint and gradually expand the failure range along the direction of deformation joint. When the water pressure is low, the occurrence probability of cracks is small and the failure range is relatively limited. The research has considerable guiding significance to the waterproofing of tunnel engineering.
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来源期刊
CiteScore
3.90
自引率
7.70%
发文量
31
期刊最新文献
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