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以双桥土石坝沥青混凝土心墙为例,系统地进行了酸性砂砾石料的沥青混凝土配合比试验,包括了添加和不添加抗剥落剂的水稳定及拉伸、抗压、弯曲、渗透和三轴性能对比试验。经系统地进行配合比和酸性砂砾石料适用性试验研究,推荐该工程心墙的沥青混凝土配合比为粗骨料采用50%破碎砂砾石料和50%天然砂砾石料,细骨料采用50%破碎砂砾石料和50%天然河砂,水泥用作填料又兼做提高沥青与骨料黏附力的措施。结果表明,添加与不添加抗剥落剂的酸性砂砾石料沥青混凝土的性能没有明显差别。
Taking the asphalt concrete core of Shuangqiao earth-rockfill dam as an example, the asphalt mixture ratio of acid gravel was systematically tested, including water stability and tensile strength with and without anti-stripping agents, compressive strength, bending, penetration and tris Shaft performance comparison test. After systematically carrying out experiments on the mix proportion and the applicability of acidic gravel, it is recommended that the mix proportion of asphalt concrete in the core wall of the project be 50% of crushed gravel and 50% of gravel, coarse aggregate should be 50% of crushed gravel Stone and 50% of natural river sand, cement used as a filler and also enhance the adhesion of asphalt and aggregate measures. The results show that there is no obvious difference between the performance of acid-gravel asphalt with or without anti-stripping agent.