《Journal of Materials in Civil Engineering》杂志刊登“水泥砂浆和混凝土硅灰石膏型硫酸盐侵蚀的研究现状”

作 者：Caijun Shi,Dehui Wang,Ali Behnood
刊 物：《Journal of Materials Engineering》，2012年11月15日
摘 要：在侵蚀环境中设计混凝土结构时，耐久性是一个最重要的考虑因素。硅灰石膏型硫酸盐侵蚀是耐久性必须考虑的问题。本文回顾了硅灰石膏型硫酸盐侵蚀的特性，硅灰石膏型硫酸盐侵蚀的影响因素，硅灰石膏形成机理和预防措施，最后提出了一些今后需要研究的内容。硅灰石膏型硫酸盐侵蚀可以完全破坏混凝土的胶结能力。影响硅灰石膏的形成和硅灰石膏型硫酸盐侵蚀的因素有很多，其中低温（低于15℃）、硫酸盐、碳酸盐和水分是影响硅灰石膏型硫酸盐侵蚀的四种主要因素。溶解-析出机理似乎可以解释硅灰石膏型硫酸盐侵蚀过程中所发生的现象，这也给出了硅灰石膏型硫酸盐侵蚀研究的步骤方法。在混凝土结构中应该考虑材料的组分和周围环境来防止硅灰石膏型硫酸盐侵蚀。 

       Review of Thaumasite Sulfate Attack on Cement Mortar and Concrete

Authors: Caijun Shi,Dehui Wang,Ali Behnood
Journal: 《Journal of Materials Engineering》，Published: 15 November 2012
Abstract: Durability is one of the most important considerations regarding the design of new concrete structures in aggressive environments. Thaumasite sulfate attack (TSA) is one durability consideration. This paper reviews the features of TSA, factors affecting TSA, thaumasite formation mechanisms, and prevention measures. Finally, some needs for future studies are also suggested.TSA can completely destroy the cementitious binding ability of concrete by transforming it into a mush. Many factors affect thaumasite formation and TSA. The four primary factors affecting TSA on portland cement-based materials are low temperatures (below 15°C) and the presence of sulfates, carbonates, and moisture. Apparently, the dissolution–precipitation mechanism can be used to explain most phenomena during TSA. A procedure for field studies is also proposed. Both material compositions and surrounding environments should be considered for the prevention of TSA in concrete structures.

原文链接：
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29MT.1943-5533.0000530
翻译：翟洁；审阅：安鹏