By Ravindra K. Dhir, John G. L. Munday
Advances in Concrete Slab know-how files the lawsuits of the overseas convention on Concrete Slabs held at Dundee collage on April 3-6, 1979. This e-book discusses the effect of metal fiber-reinforcement at the shear energy of slab-column connections; sulfur-treated concrete slabs; yield line research of orthotropicaly bolstered external panels of flat slab flooring; and behaviour of flat slab/edge column joints. The layout of a number of panel flat slab constructions; structural habit of ground slabs in shear wall constructions; shrinkage and cracking of concrete at early a long time; and slab building for HAB process modules also are elaborated. this article likewise covers the direct completing of concrete slabs utilizing the early age strength grinding process; software of vacuum dewatering to in-situ slab creation; retexturing of concrete slabs; and fatigue resistance of composite precast and in situ concrete flooring. This e-book is an efficient reference for college students and contributors fascinated by the practices and study with regards to slab expertise.
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Additional info for Advances in Concrete Slab Technology. Proceedings of the International Conference on Concrete Slabs Held at Dundee University, 3–6 April 1979
In ordinary slab structures this is not an essential property and therefore the less expensive two mesh plate may be employed. The small number of mesh layers (low specific area of steel) will result in a different crack pattern than in ordinary ferrocement but again, as long as the cracks are not wider than some specified width necessary to prevent excessive deflections and corrosion, they can be tolerated. The reduced ultimate strength of the two mesh plate can be compen- Ribbed Slabs of Ferrocement 39 sated for by shortening the space between the ribs or by transferring the loads directly to the ribs.
REFERENCES 1. 2. 3. 4. 5. N. Swamy. Mater. , 8_ (45) 235-254 (1975). N. Swamy, S. R. Ali. , Univ. Sheffield (1978). G. Batson, E. Jenkins and R. Spatney. J. Am. Concr. , 69 (10), 640-644 (1972). R. I, Knab. Proc. Symp. on Fibre Cement and Concrete, The Construction Press, London, 209-214 (1975). W. E. Moustafa. Experimental Investigation of the Use of Steel Fibres for Shear Reinforcement, Concr. Technol. Associates, Tacoma Washington (1975). 32 6. 7. 8. 9. 10. 11. 12. N. R. A. E. Regan. Proc. Conf.
Such failures are undesirable since they do not allow an overall yield line mechanism to develop before punching. In design, the problem of punching shear failures in slab-column connections is taken care of by thickening the slab, increasing the flexural reinforcement near the column or by providing suitable shear reinforcement. In this investigation, the punching shear strength of slab-column connections is improved by the addition of short, discrete steel fibres, uniformly dispersed and randomly oriented, to the concrete.
Advances in Concrete Slab Technology. Proceedings of the International Conference on Concrete Slabs Held at Dundee University, 3–6 April 1979 by Ravindra K. Dhir, John G. L. Munday