用水量对胶凝砂砾石抗压强度的影响  

Effect of Water Consumption on Compressive Strength of Cemented Sand and Gravel Material

作　　者：孙明权[1,2] 孙政卫 杨世锋[1,2] 柴启辉[1,2] SUN Mingquan SUN Zhengwei YANG Shifeng CHAI Qihui(North China University of Water Resources and Electric Power, Zhengzhou 450045, China Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering, Zhengzhou 450045, China)

机构地区：[1]华北水利水电大学,河南郑州450045 [2]水资源高效利用与保障工程河南省协同创新中心,河南郑州450045

出　　处：《华北水利水电大学学报（自然科学版）》2017年第1期64-67,共4页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：水利部公益性行业专项项目(201301025)

摘　　要：胶凝砂砾石材料是一新型筑坝材料,拥有广阔的发展前景。用水量是影响胶凝砂砾石强度的重要因素。通过抗压强度试验分析用水量对胶凝砂砾石抗压强度的影响,得出:最优用水量随胶凝材料掺量的增大而增大,随砂率的增大而增大,最优用水量为85~125 kg/m^3;最优水胶比随胶凝材料用量的增加而减小,随龄期的增加呈减小的趋势,最优水胶比为0.95~1.35。用水量对抗压强度的影响仅次于水泥用量,在施工过程中,应将其作为胶凝砂砾石材料的一项重要参数来控制,以保证胶凝砂砾石材料的性能。Cemented sand and gravel （CSG） material is a new type of dam material, has broad prospects for development. Water con- sumption is an important factor affecting the strength of cemented sand and gravel material. In this paper, the compressive strength test was conducted to analyze the effect of water consumption on the compressive strength of cemented sand and gravel material. The results show that the optimal water consumption increases with the increase of CSG material content, and increases with the increase of sand ratio, the optimal water consumption was 85 - 125 kg/m3. The optimal water-binder ratio decreases with the increase of the dosage of CSG material, and decreases with the increase of the age. The optimal water-binder ratio was 0.95 - 1.35. The effect of water con- sumption on compressive strength is second only to cement consumption. In the construction process, the importance of water should be fully aware of. As an important parameter of CSG material, the strength can be exerted and the quality of the project can be ensured.

关 键 词：胶凝砂砾石 砂率 最优用水量 水泥掺量 粉煤灰掺量 

分 类 号：TV422[水利工程—水工结构工程]