用水量对胶凝砂砾石抗压强度的影响

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。

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

Cemented sand and gravel (CSG) material is a new type of dam material,has broad prospects for development.Water consumption 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 consumption 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.