CAJ | 학술논문

新疆南疆部分干旱多盐碱地区混凝土建筑物面临高浓度硫酸盐、镁盐双重侵蚀破坏问题。通过水泥抗硫酸盐侵蚀试验方法（K法）研究了水灰比、侵蚀溶液浓度、侵蚀龄期等对硫铝酸盐水泥混凝土抗硫酸盐侵蚀能力的影响，并采用宏观观测和扫描电镜（SEM ）、能谱（EDS ）等微观观测方法，分析和揭示其抗硫酸盐侵蚀机理。结果表明，降低水胶比能有效提高硫铝酸盐水泥胶砂试件抗高浓度硫酸盐、镁盐侵蚀性能；在镁离子浓度一定时，侵蚀溶液对硫铝酸盐水泥胶砂试件的双重侵蚀破坏作用与硫酸根离子浓度具有明显的相关性；石膏的大量生成是造成胶砂试件表面剥蚀破坏的主要原因。
신강남강부분간한다염감지구혼응토건축물면림고농도류산염、미염쌍중침식파배문제。통과수니항류산염침식시험방법（K법）연구료수회비、침식용액농도、침식령기등대류려산염수니혼응토항류산염침식능력적영향，병채용굉관관측화소묘전경（SEM ）、능보（EDS ）등미관관측방법，분석화게시기항류산염침식궤리。결과표명，강저수효비능유효제고류려산염수니효사시건항고농도류산염、미염침식성능；재미리자농도일정시，침식용액대류려산염수니효사시건적쌍중침식파배작용여류산근리자농도구유명현적상관성；석고적대량생성시조성효사시건표면박식파배적주요원인。
In some part of the drought and salinity region in the south of Xinjiang ,concrete buildings are confronted with double erosion problems of sulphate and magnesium salt in high concentrations .In this study ,the influence of water/ce-ment ratio ,erosion of solution concentration and erosion time on the erosion resistance of sulfate aluminium cement con-crete were studied with“the concrete resistance to sulfate erosion experiment method”(method K ) .What’s more ,both of the macroscopic and microscopic observation methods such as scanning electron microscope (SEM ) and energy spectrum analysis (EDS ) were used to analyze and reveal the mechanism of sulfate attack resistance .It is found that lowering the water/cement ratio can effectively increase the erosion resistance of sulphate aluminium cement in magnesium sulfate ero-sion environment;the double erosion damage of erosion solution to sulphate aluminium cement mortar specimens has obvi-ous correlation with the concentration of sulfate ions;gypsum which generates in large numbers is the main reason of the surface erosion on the surface of the mortar specimens .