粉煤灰综合利用
FLYASHCOMPREHENSIVEUTILIZATION
2018NO.1 试验与应用
双层氢氧化物作为钢筋阻锈材料阻锈效果评价 Rust Resistance Effect Evaluation on Double Hydroxide as Reinforcement Rust Resistance Materials
苏旭文1，薛炳勇2，陈行3，陈文宇3（1.南京航空航天大学，南航基建处，江苏南京210016； 2.河北水利电力学院，土木工程系，河北沧州061000； 3.西南交通大学，土木工程学院，四川成都610031）
摘要：通过盐水浸渍法、硬化砂浆法和劈裂观察法对双层氰氧化物（LHD）、缎烧之后的双层氢氧化物（LHO）、对比阻锈剂NaNOz、K18、空白组3组和以LHO为主要材料的自制阻锈剂ZY1~ZY3共3组进行了钢筋阻锈能力的研究。结果表明：根据规范JGJ/T192-2009，依照钢筋的锈蚀情况评价阻锈剂的阻锈效果，阻锈效果较好阻锈剂有ZY1、 ZY3、LHO，比NaNO，、K18的阻锈效果好，而ZY2的阻锈效果较差。掺加3%NaCI的硬化砂浆法试验结果表明，ZY3 在掺量3%、4%时具有很好的阻锈效果，其适宜掺量为3%；阻锈剂ZY1和LHO有较好的阻锈效果和4%掺量时具有很好的阻锈效果，适宜掺量为4%；而ZY2、LHD和K18在掺量3%和4%时的阻锈效果均不佳；综合三种试验方法来评价双层氢氧化物和自制阻锈剂的短期阻锈效果，自制阻锈剂ZY3其有较好的阻锈效果，其适宜掺量为3%，LHO 和ZY1在适宜掺量为4%下有相同的阻锈效果；而相同掺量下的ZY2、LHD、K18阻锈效果不佳。
关键词：阻锈剂；双层氢氧化物；盐水浸溃法；硬化砂浆法
中图分类号：TU528.042*.6
文献标识码：A
文章编号：10058249（2018）01-0015-06
Su Xuwen', Xue Bingyong', Chen Hang , Chen Wenyu
( 1. South China capital construction department, Nanjing University of Aeronauties & Astronautics, Jiangsu, Nanjing 210016, China; 2. Civil engineering department, Hebei University of Water Resources and Electric Engineering, Cangzhou, Hebei 061000, China;
3. School of civil engineering, Southwest Jiao Tong University, Sichuan, Chengdu 610031, China. )
Abstract: It is observed that double hydroxides (LHD) , double hydroxides (LHO) after the calcination, contrast rust inhibitor NaNO2, K18, blank group 3 group and to LHO as the main material of homemade rust inhibitor ZY1-ZY3 a total of three groups of reinforced rust ability by salt water immersion method, and hardened mortar. The results show that:according to the specification JGJ / T1922009, evaluated in acordance with corroded reinforcement rust inhibitor effect of rust, rust inhibitor has better ZY1, ZY3, LHO,more than NaNO2, K18, while inhibiting effectiveness ZY2 poor.The results of adding 3% NaCI hardened mortar method show, ZY3 has good rust results when content 3%、 4%, the appropriate content of 3%; rust inhibitor ZY1 and LHO has good resistance when having a rust effect and 4% ash rust good effect,the appropriate content of 4%; and ZY2, LHD and K18 rust results when content of 3% and 4% were poor;integrated three test methods to evaluate the effeect of shortterm rust double hydroxides and homemade rust agent,rust inhibitor homemade ZY3 has good rust effect,the appropriate content of 3%, LHO and
ZY1 in a suitable dosage is 4% under the same rust effect;and under the same dosageZY2, LHD and K18 rust of poor effect. Keywords: corrosion inhibitor; doable hydroxide; salt water immersion method; hardened mortar method
目前，钢筋锈蚀是导致钢筋混凝土结构破坏的作者简介：苏旭文（1967年～），女，专科，助理工程师，主
要从事建筑材料相关工作。收稿日期：2017-11-16 万方数据
主要原因，而CI的渗入是引起钢筋锈蚀的主要因素。钢筋锈蚀导致构件体积增大，造成构件体积膨胀开裂，导致保护层剥落，钢筋裸露与周围环境接触，发生化学反应进一步被腐蚀，使钢筋混凝土结构的耐久性降低。研究表明，导致钢筋表面钝化膜破坏，造
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