法标条件下水泥砂在堆场基层中的应用

在石料缺乏地区港口建设中,堆场基层采用常规稳定类粒料,对石料需求量比较大,导致建设成本很高。为充分利用当地资源、节约投资费用,进行水泥砂应用于堆场基层的研究。基于法国标准,采用符合要求的沉积砂或经冲击作用而分解的花岗岩质砂为原材料,以CBR值作为水泥砂主要设计控制指标和强度标准,采用路拌机现场拌和施工,并通过试验段完成各项指标的检测和验证。结果表明,在资源条件受限地区可以选择水泥砂作为港口堆场的基层材料,可有效解决工程所在地石料匮乏问题。

Application of cement-bonded sand for base course of storage yard under French standard

In the port construction in some areas where is lack of stone materials,conventional stable granule materials are often used for the base course of storage yard,and thus a lot of stones are needed,resulting in high construction cost.In order to make full use of local resources and save the investment cost,we carry out a research on the application of cement-bonded sand for the base course of the storage yard.Based on the French standard,and using the required sedimentary sand or granitic sand decomposed by impact as raw material,we take CBR value as the main design control index and strength standard of the cement-bonded sand,use the road mixer for field mixing and construction,and implement the test and verification of all indicators in the test section.The results show that the cement-bonded sand can be selected as the base course material for port storage yard in the area with limited resources,which could effectively solve the problem of stone shortage in the project site.