摘要
通过采用锦屏一级水电站的原材料,对外掺氧化镁的水工混凝土性能试验研究表明,外掺氧化镁对混凝土的抗压强度略有降低,对劈拉强度、轴拉强度、弹性模量、极限拉伸值略有提高;未掺氧化镁的砂岩混凝土180d自身体积变形为-57.8个微应变,外掺4%的氧化镁可以使砂岩混凝土的自身体积变形接近0。
With raw materials of Jinping first-level hydropower station,the experimental study on performance of hydraulic concrete with magnesia shows that the compressive strength of concrete added with magnesia is descreased slightly and cleavage strength,tensile strength,modulus of elasticity,tensile strain ultimate of concrete added with magnesia are increased slightly. The autologous volumetric deformation of the sandstone concrete at 180d is -57.8 microstrain without adding magnesia and the autologous volumetric deformation of the sandrock concrete added with 4% magnesia at 180d is approach to 0.
出处
《混凝土》
CAS
CSCD
北大核心
2007年第3期72-73,77,共3页
Concrete
关键词
氧化镁
抗压强度
劈拉强度
轴拉强度
自身体积变形
magnesia
compressive strength
cleavage strength
tensile strength
autologous volumetric deformation
