CPG桩身混凝土配合比设计及抗压强度的试验研究

基于水泥火山灰碎石桩(简称CPG桩)的工程应用特点,开展了CPG桩身混凝土配合比设计及抗压强度的试验研究,探讨掺加3%和5%硅灰对不同强度等级的火山灰混凝土抗压强度的影响。研究结果表明:加入5%的硅灰能够明显提高火山灰混凝土的抗压强度,建议在CPG桩身混凝土配合比设计中掺加5%硅灰。

Experimental Research on the Mixing Proportion Design and Compressive Strength of CPG Pile Concrete

Based on the engineering application characteristics of CPG pile, the experimental research on the mixing proportion and compressive strength of CPG pile concrete is conducted.The compressive strength of volcanic ash concrete mixed with 3% and 5% of silica fume with different strength grades is discussed.The research results show that mixing 5% of silica fume can obviously improve the compressive strength of volcanic ash concrete.It’s suggested 5% of silica fume is added in the mixing proportion design to CPG pile concrete.