粉煤灰和矿粉对海水海砂混凝土氯离子固化和抗冻性能的影响  

Investigation on the Eff ects of Fly Ash and Slag on the Chloride Curing and Frost Resistance of Seawater Sea Sand Concrete

作　　者：沈均 罗驹华[2] 王建华 SHEN Jun;LUO Ju-hua;WANG Jian-hua(School of Materials Science&Engineering,Changzhou University,Changzhou 213000,Jiangsu,China;School of Materials Science and Engineering,Yancheng Institute of Technology,Yancheng 224051,Jiangsu,China)

机构地区：[1]常州大学材料科学与工程学院,江苏常州213000 [2]盐城工学院材料科学与工程学院,江苏盐城224051

出　　处：《合成材料老化与应用》2023年第4期39-43,共5页Synthetic Materials Aging and Application

基　　金：华能国际电力股份有限公司南通电厂项目(HNKJ20-G02)。

摘　　要：针对海水海砂混凝土(SSC)耐久性的问题,以粉煤灰和矿粉掺量为变量,水玻璃作为碱激发剂制备了SSC样品。采用X射线衍射仪(XRD)、扫描电镜(SEM)等分析了SSC在模拟海水环境下水化产物和微观形貌的变化。结果表明,粉煤灰、矿粉、水玻璃掺量分别为12%、18%、1%时,SSC的抗压强度和氯离子固化能力分别为32.6MPa和1.02,SSC冻融循环200次后的质量损失率为4.5%,抗压强度下降了21.2%。To address the durability of seawater sea sand concrete(SSC),SSC test blocks were prepared with seawater and sea sand as the main raw materials,the contents offly ash and slag as variables,and water glass as alkali exciter.The changes of hydration products and microscopic morphology of SSC under the simulated seawater environment were analyzed by XRD and SEM.The results showed that the compressive strength and chloride curing ability performance reached the value of 32.6MPa and 1.02 at 12%,18%,1%offly ash,slag,water glass admixture,respectively.The mass loss rate of SSC after 200 frost resistance cycles was 4.5%and the compressive strength decreased by 21.2%.

关 键 词：海水海砂混凝土 抗压强度 氯离子固化能力 抗冻融性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]