阻锈剂对海砂硫铝酸盐混凝土中钢筋锈蚀的影响  

Influence of Rust Inhibitors on Rebar Corrosion in Sea Sand Sulfoaluminate Cement Concrete

作　　者：王坚峰 梁咏宁[1] 杨小彬 叶财发 司青山 季韬[1] WANG Jianfeng;LIANG Yongning∗;YANG Xiaobin;YE Caifa;SI Qingshan;JI Tao(College of Civil Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;Fujian Jintong Construction Group Co.,Ltd.,Fuzhou,Fujian 350399,China;Fujian Tongde Construction Group Co.,Ltd.,Xiamen,Fujian 361111,China)

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]福建省金通建设集团有限公司,福建福州350399 [3]福建同得建工集团有限公司,福建厦门361111

出　　处：《河北工程大学学报（自然科学版）》2024年第5期1-7,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51708120)。

摘　　要：利用海砂替代河砂制备海砂硫铝酸盐混凝土(SACS),以海砂普通硅酸盐混凝土(OPCS)为对照,研究SACS的氯离子固化性能,并采用硬化砂浆阳极极化法及钢筋失重率法研究不同阻锈剂(单氟磷酸钠、亚硝酸锂和三乙醇胺)及其掺量(0%、0.5%、1%、1.5%、2%,即阻锈剂与硫铝酸盐水泥的质量比)对海砂硫铝酸盐水泥砂浆(SS)中钢筋极化电位和钢筋锈蚀的影响。结果表明:标养28 d后SACS氯离子固化率较OPCS高约18%,SS中钢筋极化电位略高于海砂普通硅酸盐水泥砂浆(OPC_(S));在S_(S)中掺入阻锈剂能使钢筋极化电位正移,失重率降低;掺入1.5%三乙醇胺阻锈效果最佳,钢筋极化电位变化满足规范要求,钢筋失重率仅为0.0142%,与未掺入阻锈剂相比降低约91%。In this study,sea sand was used to prepare sea sand sulfoaluminate cement concrete(SACS)by substituting river sand.Sea sand ordinary Portland cement concrete(OPCS)was used as the control group.The chloride ion solidification performance of SACS was investigated.The effects of different rust inhibitors(sodium monofluorophosphate,lithium nitrite,and triethanolamine)and their concentrations(0%,0.5%,1%,1.5%,2%,i.e.,the mass ratio of rust inhibitors to sulfoaluminate cement)on rebar polarization potential and rebar corrosion in sulfoaluminate cement mortar(S_(S))were studied using the methods of hardened mortar anode polarization and rebar mass loss.The results showed that after 28 days of curing,the chloride ion solidification rate of SACS was approximately 18%higher than that of OPCS.The rebar polarization potential in SS was slightly higher than that in sea sand ordinary Portland cement mortar(OPC_(S)).Adding rust inhibitors to SS shifted the rebar polarization potential in a positive direction and reduced the mass loss.The best rust inhibition effect was achieved by adding 1.5%triethanolamine,meeting the specifications for the change in rebar polarization potential,and the rebar mass loss was only 0.0142%,approximately 91%lower than that without adding rust inhibitors.

关 键 词：海砂 硫铝酸盐混凝土 氯离子固化 钢筋 阻锈剂 

分 类 号：TU526[建筑科学—建筑技术科学]