摘要
利用XRD,SEM,TG-DSC和压汞仪研究了铅粉对砂浆水化性能和微观结构与组成的影响。实验表明,当铅粉掺量较低时,粒度较小的铅粉在砂浆体系中起细集料填充效应,能够改善孔结构,增强砂浆的力学性能。如果铅粉掺量过多则会破坏水泥的水化过程,并且会产生大量的Pb3(CO3)2(OH)2从而导致砂浆的表面结构被破坏,严重影响了砂浆的耐久性。由于铅本身对伽马射线具有优异的屏蔽性能,因此可以增强砂浆的防辐射性能。
Effect of lead powder on hydration property and microstructure composition of the mortar was studied with XRD, SEM, TG-DSC and MIP. The experiment showed that the lead powder played the role of the fine aggregate that was used to be filled in the pore. It improved the pore structure and basic performance of the mortar when the percentage of lead powder was low. If the lead power content was too much for the mortar, it would destroy the hydration process of the cement and generated Pb3 （ CO3 ） 2 （OH） 2 which could damages the surface structure of the mortar so the durability of the mortar would be affected badly. Because of the excellent shielding performance for gamma rays, the lead powder could improve the radiation shielding performance of the mortar.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第11期2221-2226,共6页
Bulletin of the Chinese Ceramic Society
基金
江苏省新型环保重点实验室开放课题(AE201007)
关键词
防辐射
铅粉
水化性能
孔结构
radiation shielding
lead powder
hydration property
pore structure
