- 目录
- 新型墙体材料与施工
- 首页
疏浚土混凝土路面砖配比研究
作者：任志，贺晓东，赵卫民，宋苗苗，田渊广
（湖南百舸水利建设股份有限公司，湖南 长沙 410000）
摘要：随着我国江河湖库疏浚工程的开展，疏浚土的后续处理是一大难题，而将疏浚土资源化利用具有广泛的应用前景。通过4因素3水平正交试验，研究水灰比、砂率、含水率50%疏浚土掺量及六偏磷酸钠浓度对混凝土路面砖抗压强度的影响。结果表明：对掺疏浚土混凝土路面砖的抗压强度影响最大的是水灰比，影响最小的是砂率；最优配合比为：水灰比0.40，砂率0.35，疏浚土掺量20%（含水率50%），六偏磷酸钠浓度5%。
关键词：疏浚土；六偏磷酸钠；混凝土路面砖；抗压强度
中图分类号：TU522.1；U414 文献标识码：A 文章编号：1001-702X（2020）06-0141-03
Research on mixing ratio of dredged soil concrete paving units
REN Zhi，HE Xiaodong，ZHAO Weimin，SONG Miaomiao，TIAN Yuanguang
（Hunan Bestall Water Conservancy Construction Co. Ltd.，Changsha 410000，China）
Abstract：With the development of the dredging project of rivers and lakes in China，the follow-up treatment of dredged soil is a big problem，and the utilization of dredged soil resources has a wide application prospect. The influence of water cement ratio，sand ratio，content of dredged soil with 50% moisture and sodium hexametaphosphate concentration on the compressive strength of concrete paving units was studied by orthogonal test at 4 factors and 3 levels. The results show that：The most important influence on the compressive strength of the concrete paving units with dredged soil is the water-cement ratio，the minimum impact is the sand ratio. The optimal mixing ratio is：water cement ratio of 0.4，sand ratio of 0.35，20% dredged soil（50% moisture），and 5% sodium hevetaphosphate.
Key words：dredged soil，sodium hexametaphosphate，concrete paving units，compressive strength