沙漠砂置换率对混凝土力学性能影响研究分析  

Study and Analysis of Effect of Desert Sand Displacement Rate on Mechanical Properties of Concrete

作　　者：肖香琭 XIAO Xianglu(Guangdong Guan'an Construction Engineering Quality Inspection Co.,Ltd)

机构地区：[1]广东冠安建设工程质量检测有限公司

出　　处：《广东建材》2025年第3期164-167,共4页Guangdong Building Materials

摘　　要：本文主要讨论了沙漠砂置换河砂对混凝土抗压、抗折和劈裂抗拉强度的影响,对现有的研究成果进行讨论和分析。结果表明:混凝土的抗压、抗折、劈裂抗拉强度随着沙漠砂置换河砂比例的增加先升高再降低,置换率以30%左右为佳;沙漠砂存在粒径较小、级配不良、含有盐分和杂质、地区分布不均匀等问题,使用之前需要对其进行预处理,例如清洗、筛分、与外加剂混合使用等;沙漠砂置换河砂在混凝土中的应用具有一定潜力,但仍需进一步的研究和技术改进。This paper mainly discusses the effect of desert sand replacing river sand on compressive,flexural and splitting tensile strength of concrete,and discusses and analyzes the existing research results.The results show that the compressive,flexural and splitting tensile strength of concrete first increases and then decreases with the increase of the proportion of desert sand replaced by river sand,and the replacement rate is about 30%.Desert sand has such problems as small particle size,poor grading,salt and impurities,uneven regional distribution,etc.It needs to be pre-treated before use,such as cleaning,screening,mixing with admixtures,etc.The application of desert sand instead of river sand in concrete has certain potential,but it still needs further research and technical improvement.

关 键 词：沙漠砂 河砂 混凝土 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]