Study on Corrosion Durability of Ferrocement
Study on Corrosion Durability of Ferrocement
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DOI：
10.14359/19204
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发表时间：
2008-02
影响因子：
1.7
通讯作者：
M. A. Mansur;M. Maalej;M. Ismail
中科院分区：
文献类型：
--
作者：
M. A. Mansur;M. Maalej;M. Ismail
采用电化学加速腐蚀技术研究了钢丝网水泥的耐腐蚀性能。考虑的变量包括覆盖层厚度;基质的水灰比（W/C）、砂灰比（S/C）以及矿物和化学外加剂的含量;以及不锈钢丝网的使用。经过适当的暴露，最大裂缝宽度，钢损失的百分比，和弯曲强度的减少作为评估各种手段的相对性能的基础。试验结果表明，添加矿物掺合料，应用合适的表面涂层，并使用更深的混凝土保护层提供了良好的保护，防止钢筋腐蚀。使用不锈钢作为增强材料和在基体中使用所谓的腐蚀抑制剂或低w/c也减缓了腐蚀过程，但不如其他方法有效。根据试验结果，提出了一种复合防护体系，结合三道防线，以提高钢丝网水泥的耐久性。
An electrochemical-based accelerated corrosion technique has been employed to study the corrosion durability of ferrocement. Variables considered include cover thickness; composition of the matrix in terms of water-cement ratio (w/c), sand-cement ratio (s/c), and contents of mineral and chemical admixtures; and use of stainless steel wire mesh. After suitable exposure, maximum crack width, percentage of steel loss, and reduction in flexural strength served as the bases for assessing the relative performance of various means considered. Test results indicate that the addition of mineral admixtures, application of a suitable surface coating, and the use of deeper concrete cover provide excellent protection against reinforcement corrosion. Employment of stainless steel as reinforcement and the use of so-called corrosion inhibitor or a low w/c in the matrix also slows down the corrosion process, but is not as effective as others. Based on test results, a hybrid protection system combining three lines of defense is suggested for enhanced durability of ferrocement.