摘要
针对油菜秸秆灰分混凝土早期强度较低的缺陷，利用硅粉的高火山灰活性和填充效应，在普通混凝土中掺加油菜秸秆灰分的基础上复掺硅粉，测试双掺混凝土的力学性能和工作性能。结果表明：当秸秆灰分的基准掺量为20％时，随着硅粉掺量增加，混凝土的黏聚性和保水性变优；当硅粉掺量为10％时，混凝土的抗压强度达到17．2MPa，强度增加24％；当秸秆灰分为20％、硅粉掺量为6％时，双掺混凝土水胶比的最适范围为0．5～0．6。
Based on its high ash activity and filling effect, silica fume was added in ordinary concrete which was formerly added with rape straw ash to solve the problem of low early strength of the rape straw concrete, and the work and the mechanical performance of the double mixed concrete were investigated. The results showed when rape straw ash content was 20%, the cohesive properties and the water retention properties become better with increasing content of silica fume; when the silica fume content was 10%, the compressive strength of the concrete reached 17.2 MPa, which was increased by 24%; when the rape straw ash content was 20% and the silica fume content was 6%, the optimum range of water-cementitious material ratio of the double mixed concrete was 0.5-0.6.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第3期334-336,共3页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省政府重大专项(湘府阅[2012]35号)
关键词
油菜
秸秆灰分
硅粉
混凝土
力学性能
rape
straw ash
silica fume
concrete
mechanical performance
