Continuous tracking of the relationship between resistivity and pore structure of cement pastes
作者： Zhiyong Liu , Yunsheng Zhang , Qian Jiang
DOI: 10.1016/J.CONBUILDMAT.2013.11.067
关键词:
摘要: Abstract The electrical resistivity changes with time of cement pastes water to ratio 0.23, 0.35 and 0.53 were in situ continuously monitored by using a non-contact apparatus. To aid understanding the evolution effective resistivity, hydration model CEMHYD3D was then utilized simulate early age formation microstructure. Based on media theory, relationship between change relative total porosity, tortuosity factor constrictivity is established. results show that lower shows smaller porosity as well higher factor. Moreover, according experimental simulated results, it found not only controlled capillary pores but also C–S–H phases. Before arriving fully de-percolation pores, reduction connectivity influence paste than decrease porosity. After that, mainly determined volume fraction C–S–H.
sci-hub.se 参考文章(24)
Haruo Sato, Mikazu Yui, Hideki Yoshikawa, Diffusion behavior for Se and Zr in sodium-bentonite MRS Proceedings. ,vol. 353, pp. 269- 276 ,(1994) , 10.1557/PROC-353-269
C. Gallé, Effect of drying on cement-based materials pore structure as identified by mercury intrusion porosimetry: A comparative study between oven-, vacuum-, and freeze-drying Cement and Concrete Research. ,vol. 31, pp. 1467- 1477 ,(2001) , 10.1016/S0008-8846(01)00594-4
Preliminary Interpretation of Portland Cement Hydration Process Using Resistivity Measurements Aci Materials Journal. ,vol. 100, pp. 253- 257 ,(2003) , 10.14359/12627
Hanifi Binici, Joselito Arocena, Selim Kapur, Orhan Aksogan, Hasan Kaplan, Investigation of the physico-chemical and microscopic properties of Ottoman mortars from Erzurum (Turkey) Construction and Building Materials. ,vol. 24, pp. 1995- 2002 ,(2010) , 10.1016/J.CONBUILDMAT.2010.03.013
E. J. Garboczi, D. P. Bentz, Computer simulation of the diffusivity of cement-based materials Journal of Materials Science. ,vol. 27, pp. 2083- 2092 ,(1992) , 10.1007/BF01117921
X. Wei, Z. Li, Study on hydration of Portland cement with fly ash using electrical measurement Materials and Structures. ,vol. 38, pp. 411- 417 ,(2005) , 10.1007/BF02479309
Lian-zhen Xiao, Zong-jin Li, Xiao-sheng Wei, Selection of superplasticizer in concrete mix design by measuring the early electrical resistivities of pastes Cement & Concrete Composites. ,vol. 29, pp. 350- 356 ,(2007) , 10.1016/J.CEMCONCOMP.2006.12.015
Yishun Liao, Xiaosheng Wei, Guowei Li, Early hydration of calcium sulfoaluminate cement through electrical resistivity measurement and microstructure investigations Construction and Building Materials. ,vol. 25, pp. 1572- 1579 ,(2011) , 10.1016/J.CONBUILDMAT.2010.09.042
Byung Hwan Oh, Seung Yup Jang, PREDICTION OF DIFFUSIVITY OF CONCRETE BASED ON SIMPLE ANALYTIC EQUATIONS Cement and Concrete Research. ,vol. 34, pp. 463- 480 ,(2004) , 10.1016/J.CEMCONRES.2003.08.026
R. Yang, N.R. Buenfeld, Binary segmentation of aggregate in SEM image analysis of concrete Cement and Concrete Research. ,vol. 31, pp. 437- 441 ,(2001) , 10.1016/S0008-8846(00)00493-2