外掺氧化镁混凝土自生体积变形影响因素的试验研究  

Experimental study on the influence factors of autogenous volume deformation of concrete added Magnesium oxide

作　　者：黄寿良 杨富亮 马芳 

机构地区：[1]中国水利水电第三工程局有限公司勘测设计研究院,陕西西安710000

出　　处：《中国水利水电科学研究院学报》2016年第1期53-59,共7页Journal of China Institute of Water Resources and Hydropower Research

摘　　要：通过长达6年龄期,对外掺氧化镁混凝土自生体积变形的观测,了解氧化镁掺量、粉煤灰掺量、水胶比和岩石种类对自生体积变形的影响。试验结果表明,混凝土自生体积变形随氧化镁掺量的增加而增大;随粉煤灰掺量的增加早期变形增大,后期降低;不同水胶比对自生体积变形的影响主要在早期,1年后变形基本相当;不同岩石种类对自生体积变形有显著的影响。为外掺氧化镁混凝土研究和应用提供参考。In the observation of the autogenous volume deformation of concrete added Magnesium oxide in6 years,the effect of Magnesium oxide content,fly ash content,water-cement ratio and rock type on theautogenous volume deformation was known. The experimental results show that the autogenous volume defor-mation of concrete increases with the increase of Magnesium oxide content;the early deformation increasesand the late deformation reduces with the increase of fly ash content;the influence of different water-ce-ment ratios on the autogenous volume deformation is chiefly in the early period,and the deformations areessentially the same 1 year later;the different rock types have significant influence on autogenous volumedeformation. These provide reference for the research and application of concrete added Magnesium oxide.

关 键 词：自生体积变形 氧化镁 粉煤灰 掺量 水胶比 岩石种类 

分 类 号：TV544.921[水利工程—水利水电工程]