Influence of Ground Slag on the Rheology of Mortar

Abstract:

The effects of ground slag with different specific surface area on the rheology of mortar at water-binder ratio of 0.25, 0.28 and 0.30 were investigated, and the combined effects of packing density and solid surface area on the rheology of mortar were evaluated in terms of the water film thickness. The results show that with the increasing of specific surface area of slag (220 m²/kg-784 m²/kg), plastic viscosity and yield stress decrease. The correlations of yield stress and plastic viscosity to the water film thickness are basically linear with high correlation R² values. The action of the ground slag on the rheology of mortar can be characterized by water film thickness, and with the increasing of water film thickness the rheological parameters decrease.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 67-71
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.67
• Online since: October 2013
• Authors: Qian Qian Zhang, Jian Zhong Liu, Jia Ping Liu
• Keywords: Ground Slag, Mortar, Rheology, Water Film Thickness

References

[1] C. Hu, F. de Larrard, The rheology of fresh high-performance concrete, Cement and Concrete Research, 26 (1996) 283-294.

DOI: 10.1016/0008-8846(95)00213-8

[2] M. Nehdi, S. Mindess, P. C. Aǐtcin, Rheology of high-performance concrete: effect of ultrafine particles, Cement and Concrete Research, 28 (1998) 687-697.

DOI: 10.1016/s0008-8846(98)00022-2

[3] A. Laskar, S. Talukdar, Rheological behavior of high performance concrete with mineral admixtures and their blending, Construction and Building Materials, 22 (2008) 2345-2354.

DOI: 10.1016/j.conbuildmat.2007.10.004

[4] C. F. Ferraris, H. O. Karthik, H. Russell, The influence of mineral admixtures on the rheology of cement paste and concrete, Cement and Concrete Research, 31 (2001) 245-255.

DOI: 10.1016/s0008-8846(00)00454-3

[5] P. Nanthagopalan, M. Haist, M. Santhanam, et al, Investigation on the influence of granular packing on the flow properties of cementitious suspensions, Cement and Concrete Composites, 30 (2008) 763-768.

DOI: 10.1016/j.cemconcomp.2008.06.005

[6] Y. Peng, S. Hu, Q. Ding, Dense packing properties of mineral admixtures in cementitious material, Particuology, 7 (2009) 399-402.

DOI: 10.1016/j.partic.2009.06.003

[7] A. W. David, W. S. Aaron, M. J. Hamlin, The influence of mixing on the rheology of fresh cement paste, Cement and Concrete Research, 29 (1999) 1491-1496.

DOI: 10.1016/s0008-8846(99)00124-6

[8] F. deLarrard, Concrete Mixture Proportioning: A Scientific Approach, London, (1999).

[9] A. K. H. Kwan, H. H. C. Wong, Effects of packing density, excess water and solid surface area on flowability of cement paste, Advances in Cement Research, 20 (2008) 1-11.

DOI: 10.1680/adcr.2008.20.1.1

[10] A. K. H. Kwan, W. W. S. Fung, H. H. C. Wong, Water film thickness, flowability and rheology of cement-sand mortar, Advances in Cement Research, 22 (2010) 3-14.

DOI: 10.1680/adcr.2008.22.1.3

[11] W. W. S. Fung, A. K. H. Kwan, Role of water film thickness in rheology of CSF mortar, Cement and Concrete Composites, 32 (2010) 255-264.

DOI: 10.1016/j.cemconcomp.2010.01.005

[12] W. W. S. Fung, A. K. H. Kwan, H. H. C. Wong, Wet packing of crushed rock fine aggregate, Materials and Structures, 42 (2008) 631-643.

DOI: 10.1617/s11527-008-9409-3