疏浚超细砂对混凝土工作性和抗压强度的影响  

Effect of dredged ultra-fine sand on workability and compressive strength of concrete

作　　者：王卫[1] 陈泳乐 王冠潮 WANG Wei;CHEN Yongle;WANG Guanchao(Taizhou Institute of Sci.&Tech.,NJUST.,Taizhou 225300,China)

机构地区：[1]南京理工大学泰州科技学院,江苏泰州225300

出　　处：《混凝土与水泥制品》2023年第11期103-105,共3页China Concrete and Cement Products

基　　金：江苏省高校创新创业训练计划项目(202213842046H)。

摘　　要：为实现航道整治废弃砂的再利用,将泰州长江航道整治工程的疏浚超细砂与机制砂混合作为细骨料,研究了疏浚超细砂的掺量(0、10%、20%、30%、40%、50%)对混凝土工作性和抗压强度的影响。结果表明:随着疏浚超细砂掺量的增加,混凝土的坍落度降低,抗压强度基本呈先增大后减小再增大的趋势;综合考虑混凝土的工作性和抗压强度,建议疏浚超细砂的掺量不超过10%。In order to realize the reuse of waste sand for waterway improvement,dredged ultra-fine sand from Taizhou Yangtze River Waterway Improvement Project was mixed with manufactured sand as fine aggregates,and the effects of the content of dredged ultra-fine sand(0,10%,20%,30%,40%,50%)on the workability and compressive strength of concrete were studied.The results show that with the increase of dredged ultra-fine sand content,the slump of concrete decreases,and the compressive strength basically shows a trend of first increasing,then decreasing and then increasing.Taking into account the workability and compressive strength of concrete,it is recommended that the content of dredged ultra-fine sand should not be more than 10%.

关 键 词：航道整治 疏浚超细砂 混凝土 抗压强度 工作性 

分 类 号：TU528.041[建筑科学—建筑技术科学]