By Gideon P.A.G. Van Zijl, Billy P. Boshoff
Collection of chosen papers on present advances in excessive functionality development fabrics. Contributions take care of the advance, characterization, program techniques, functionality and structural layout of fabrics with key power in civil engineering works. fabrics taken care of are fibre strengthened concrete, excessive functionality concrete, self compacting concrete and novel mixtures of those. For researchers, practitioners, experts, contractors and suppliers.
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Extra info for Advances in Cement-Based Materials: Proc. Int. Conf. Advanced Concrete Materials, 17-19 Nov. 2009, Stellenbosch, South Africa
4 nm, which might give some indication of the possible portion of the gel pores in the UHPC matrix at an age of 28 days and so provide some additional information on the effect of internal curing on the pore system. All mixtures containing SAP show on average higher values than The evaluation of the most frequent pore diameter (maximum of the pore size distribution curve) showed, as expected, that for all mixtures investigated this representative diameter decreases with increasing concrete age, and the corresponding height of the peaks becomes lower.
The strains were measured continuously by four strain gauges glued to the inner side of the steel ring, providing information on the magnitude of these deformations. These values were used for calculating tensile stresses in concrete according to the equations proposed in Hossain & Weiss 2004. Since the stresses due to restrained autogenous deformation should be investigated at the place of origin, an outer steel ring was used in addition to the inner ring. It served as a part of the “mould” when producing the concrete annulus and subsequently as protection against desiccation at the circumference of concrete annulus.
Pitt, N. 1976. Energy and Industrial Materials Made from Crop Residues, Resource Recovery and Conservation, Vol. 2, pp. 23–28. K. 1978. Siliceous Ashes and Hydraulic Cements Produced Therefrom, US Patent 4,105,459. Meryman, H. 2007. E. Thesis, Department of Civil and Environmental Engineering, University of California, Berkeley. D. M. 1995. Very High-Strength Concrete, The Military Engineer, Vol. 87, No. 572. F. 2008. D. Thesis, Department of Civil Engineering, Northwestern University, Evanston, Illinois.