Engineering Transactions, 44, 1, pp. 17-29, 1996

Role of Thermal Treatment in Stress Failure of Concrete Differing in its Aggregate Grain Composition

J. Hoła
Wrocław University of Technology, Wrocław
Poland

Results of tests aimed at determining the influence of heat treatment on the stress failure of concrete differing significantly in its aggregate grading are presented. Seven batches of concrete, having similar compressive strengths but differing radically in their grain composition, were tested. The specimens were subjected to heat treatment in low-pressure steam in an identical temperature-time cycle. It has been shown that the course of destruction of the specimens made from different mixes is determined by heat treatment, no matter what is the fine aggregate content in the concrete. This is demonstrated above all by the values of initiating stress σ; and critical stress σcr, determined in the tested mixes and compared with the values of these stresses in the analogous but normally cured concrete mixes.

Full Text: PDF

References

K. FURTAK, Load carrying capacity of reinforced concrete cross-section subject to variable bending; application to bridge structures [in Polish], Cracow Univ. Technol. Sci., Reports (Civil Engng.), 64, Hab. Dissertation, 1985.

J. HOŁA, Studies on the effect of heat treatment on stress-produced failure in compressed concrete, Engng. Trans., 40, 1, 25-36, 1992.

J. HOŁA, Effect of heat treatment on stress destruction of concrete with different grading, Brittle Matrix Composites 4, A.M. BRANDT, V.C. Li and I.H. MARSHALL [Eds.], Woodhed Publishing Limited Institute of Economic Education, Cambridge and Warsaw, 455-462, 1994.

T.C. HSU, F.O. SLATE, G.M. STURMAN and G. WINTER, Microcracking of plain concrete and the shape of the stress-strain curve, ACI J., 60, 2, 209-224, 1963.

S.P. SHAH and S. CHANDRA, Critical stress volume change and microcracking of concrete, ACI J., 65, 9, 770-781, 1968.

K. NEWMAN and I.B. NEWMAN, Failure theories and design criteria for plain concrete. Structure, solid mechanics and engineering design, Proc. Southampton, 1969, Civ. Eng. Mat. Conf., 963-995, London 1971.

K. FLAGA and K. FURTAK, Influence of aggregate grading on the critical stress levels in the compressed concrete [in Polish], Arch. Inż. Ląd., 27, 4, 653-666, 1981.

K. FLAGA, The influence of the stresses on the stress destruction and the strength parameters of concrete; Analytical models and new concepts in mechanics of structural concrete, Published by the Białystok University of Technology, Białystok, 55-77, 1993.

G. RATAJCZAK and W. WOŁOWICKI, Limit states of concrete structures exposed to repeated loads, Reports. Buildings and Civil Engineering, Contribution of the Polish National Group, Warsaw University of Technology Publications, Warsaw, 83-92, 1990.

G. RATAJCZAK, Stress limitation in concrete for the serviceability limit state of bridge structures – a case of complex states of stress, Arch. Civil Engng., 40, 2, 189-211, 1994.

J. HOŁA, Effects of aggregate grading on the stress degradation of compressed concrete, Arch. Civil Engng., 38, 1-2, 85-101, 1992.

C. HANSEN and K.E.C. NIELSEN, Influence of aggregate properties on concrete shrinkage, ACI J., 62, 7, 783-794, 1965.

A.M. BANDT, Experimental fracture mechanics as applied to test composites with cement matrices [in Polish], [in:] Mechanics of Concrete-Like Composites, PAN, Ossolineum, 449-501, 1983.

J. HOŁA, Acoustic emission in concrete, acoustic em1ssion-sources, application, methods [in Polish], J. MALECKI and J. RANACHOWSKI [Eds.], Institute of Fundamental Technological Research, PAS, Biuro PASCAL Publishers, Warsaw, 223-240, 1994.

J. RUPPERT, H. LIBURA and W. ZARĘBSKA, Limit state of cracks in reinforced concrete beams with limestone aggregate [in Polish], IB, 9-10, 326-327, 1980.

K. FLAGA and K. FURTAK, Crack propagation in reinforced concrete beams under increasing short-term loading [in Polish], IB, 3, 116-118, 1983.




Copyright © 2014 by Institute of Fundamental Technological Research
Polish Academy of Sciences, Warsaw, Poland