白鹤滩导流洞工程中低热硅酸盐水泥的应用研究  

Researched the application of low-heat Portland cement in the diversion tunnel in BaiHeTan project

作　　者：殷海波[1] 王述银[1] 蒋科 肖开涛[1] 

机构地区：[1]水利部长江科学院工程质量检测中心,湖北武汉430010

出　　处：《混凝土》2017年第12期71-74,共4页Concrete

基　　金：中央级公益性科研项目(CKSF2017032/JC;CKSF2017034/JC)

摘　　要：研究了低热、中热硅酸盐水泥对导流洞混凝土的工作性能、强度、干缩、自生体积变形、内部温度等性能的影响,结果表明:与中热硅酸盐水泥混凝土相比,低热硅酸盐水泥混凝土前期强度较低,后期强度增长较快,90 d两者强度基本相同;同一龄期下,低热硅酸盐水泥混凝土干缩、自生体积变形和内部温度均较低。通过对导流洞混凝土性能的抽检,证明导流洞中应用低热硅酸盐水泥不仅混凝土强度、弹性模量、抗冻性能、抗渗性能满足设计要求,而且对导流洞裂纹控制也有很大的改善作用。Researched the influence of low-heat Portland cement concrete （LHC） and moderate-heat Portland cement concrete （MHC） on the properties of diversion tunnel concrete, such as the workability, strength, drying shrinkage, self volume deformation,internal temperature. Results showed relative to MHC, LHC showed lower 7 d strength in early days,but later strength increased rapidly, and its strength is basical- ly the same of 90 d; LHC showed lower drying shrinkage, self volume deformation and internal temperature at the same age.Through random inspection the properties of diversion tunnel concrete,proved LHC applied in diversion tunnel not only the strength,the modulus of elastici- ty,the ability of antifreeze and impervious satisfied the design request,bnt also had improved the crack of diversion tunnel

关 键 词：低热硅酸盐水泥 中热硅酸盐水泥 混凝土性能 导流洞工程 

分 类 号：TU528.041[建筑科学—建筑技术科学]