The Relationship between the Strength and the Pore Structures of Cement Paste with Mineral Admixtures

Article Preview

Abstract:

This paper presents the effects of mineral admixtures and the water to binder ratio (W/B) on the tensile and compressive strength and micro pore structure of hardened cement pastes. The test results show that: with the water to binder ratio increasing, the tensile and compressive strength of cement paste with different mineral admixtures will decrease, air content and mean pore diameter will decrease and the cement paste with the ground blast furnace slag is the lowest. The artificial neural network based on its nonlinear mapping function can fit the relationship between strength and pore structure more accurate than an empirical formula.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

104-108

Citation:

Online since:

May 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Martys NS: Survey of concrete transport properties and their measurement.NISTIR 5592, US Department of Commerce, (1996),p.1–40.

Google Scholar

[2] L.H. Jia ng: Hydration, Microstructure and Mechanism of High Volume Fly Ash Concrete. PhD dissertation, Hohai University, Nanjing, 1998.

Google Scholar

[3] Rakesh Kumar, B. Bhattacharjee: Porosity, pore size distribution and in situ strength of concrete, Cement and Concrete Research, Vol.33 (2003), p.155–164.

DOI: 10.1016/s0008-8846(02)00942-0

Google Scholar

[4] M. Lefik, D.P. Boso and B.A. Schrefler: Artificial Neural Networks in numerical modelling of composites, Computer Methods in Applied Mechanics and Engineering, Vol.198 (2009), p.1785–1804.

DOI: 10.1016/j.cma.2008.12.036

Google Scholar

[5] Ilker Bekir Topc and Mustafa Sarıdemir: Prediction of compressive strength of concrete containing fly ash using artificial neural networks and fuzzy logic, Computational Materials Science, Vol.41 (2008), p.305–311.

DOI: 10.1016/j.commatsci.2007.04.009

Google Scholar

[6] Chen Shi-chun and Wang Wen-an: Experimental study on whole stress-strain curve of concrete under axial tension, Journal of Yangtze River Scientific Research Institute, Vol.6(2001), pp.26-28.

Google Scholar

[7] C. Atzeni, L Massidda and U. Sanna: Effect of pore size distribution on strength of hardened cement pastes, Proceedings of the First International RILEM Congress on Pore Structure and Material Properties, Paris, (1987), pp.195-202.

Google Scholar