氧化镁和葡萄酸对混凝土耐久性性能的影响  

Influence of Magnesium Oxide and Grape Acid on Durability of Concrete

作　　者：苍雁飞 张俊友[1] 寇俊敏 CANG Yan-fei;ZHANG Jun-you;KOU Jun-min(Vocational and Technical College of Inner Mongolia Agricultural University,Baotou 014109,China)

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109

出　　处：《水电能源科学》2021年第1期127-129,共3页Water Resources and Power

摘　　要：为研究氧化镁和葡萄酸对混凝土耐久性的影响,设计5组不同氧化镁和葡萄酸含量的混凝土试块,对混凝土进行了抗压试验、抗折试验和氯离子侵蚀试验。结果表明,混凝土的抗压强度和抗折强度随着氧化镁和葡萄酸的增加先增后降,氧化镁的最佳掺量为1%,葡萄酸的最佳掺量为1.5%;掺入氧化镁和葡萄酸的混凝土的抗氯子能力均得到了提高,同等掺量下,掺入氧化镁的效果比葡萄酸的效果要好。微观测试分析表明外加剂对混凝土内部结构的影响是外加剂影响混凝土耐久性的原因,也验证了氧化镁对混凝土性能的提升效果比葡萄酸的更好的结论。In order to study the influence of magnesium oxide and grape acid on the durability of concrete,five groups of concrete blocks with different contents of magnesium oxide and grape acid were designed,and the compressive test,bending test and chloride ion erosion test were carried out on the concrete.The experimental results show that the compressive strength and bending strength of concrete increase first and then decrease with the increase of MgO and grape acid,the best content of MgO is 1%,the best content of grape acid is 1.5%;The chloride resistance of concrete mixed with MgO and grape acid is improved,and the effect of MgO is better than that of grape acid at the same content.From the micro test,the reason of the influence of the admixture on the internal structure of concrete is analyzed,and the conclusion that the improvement effect of MgO on the performance of concrete is better than that of grape acid is verified.

关 键 词：外加剂 混凝土 抗压试验 抗折试验 抗氯离子试验 

分 类 号：TU528.45[建筑科学—建筑技术科学]