研究以细磨镍冶炼水淬渣制备低标号混凝土的工艺。
The technology on low-grade concrete preparation with pulverized slag from nickel smelter is studied.
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。
The soft base strengthened by low strength of concrete piles can make the soil dense, raise the stiffness and decrease the deformation.
结果表明普通低标号混凝土抗冻性能较差，冻融循环对混凝土强度影响较大。
The result indicated that the resistance to freezing and thawing of normal low-strength concrete is very low. Freeze-thaw cycles have important affect to concrete strength.
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