The soft base strengthened by low strength of concrete piles can make the soil dense, raise the stiffness and decrease the deformation.
用低标号混凝土桩加固软弱地基，可以密实土质，提高刚度，减小变形。
This paper introduces the test results and calculative method by using the composite foundation of sand-stone pile and concrete pile with low strength.
本文通过试验与工程实践，介绍采用碎（砂）石桩及低强度混凝土桩组合构成复合地基的试验成果、计算方法及应用检测成果。
It should be considered in examining the concrete of low strength grades.
在检测的混凝土强度等级较低时，应考虑到这种差异。
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