Nuclear Magnetic Resonance Studies on Microstructure of Cement Pastes
For water filled porous materials,the difference between the relaxation time of molecules at the pore surface and the relaxation time of molecules in the bulk fluid can be interpreted by a fast diffusion model. With this model,the nuclear magnetic resonance (NMR) can be applied to investigate the microstructure of cement pastes. The cement pastes we tested are two series,one is of same wat er to cement ratio (w/c=0.4) at different curing time (7d, 28d and 90d),the other is of different water to cement ratio (w/c=0.3,0.4 and 0.5,respectively) at the same curing day. Comparing results by NMR method with those by mercury intrusion porosimetry (MIP) shows that NMR is a convenient and nondestructive way to probe pore distribution of cement pastes.
Nuclear magnetic resonance Mercury intrusion porosimetry Microstructure
Jin Dan Wu yao Anming She Xiaoyan Liu
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University,12 College of Mechanics and Materials,Hohai University,1 Xikang Road,Nanjing 210098,China
国际会议
Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)
南昌
英文
518-521
2010-04-28（万方平台首次上网日期，不代表论文的发表时间）