Application of Fracture Mechanics to Cementitious Composites by G. C. Sih (auth.), S. P. Shah (eds.)

By G. C. Sih (auth.), S. P. Shah (eds.)

Portland cement concrete is a comparatively brittle fabric. for this reason, mechanical habit of concrete, conventionally strengthened concrete, prestressed concrete, and fiber bolstered concrete is severely inspired by means of crack propagation. it truly is, hence, no longer impressive that makes an attempt are being made to use the options of fracture mechanics to quantify the resistance to cracking in cementious composites. the sphere of fracture mechanics originated within the 1920's with A. A. Griffith's paintings on fracture of brittle fabrics akin to glass. Its most important purposes, even if, were for controlling brittle fracture and fatigue failure of steel constructions similar to strain vessels, airplanes, ships and pipe­ traces. significant improvement has happened within the final two decades in enhancing Griffith's rules or in featuring new ideas to account for the ductility ordinary of metals. due to those efforts, commonplace trying out concepts were to be had to acquire fracture parameters for metals, and layout in keeping with those parameters are incorporated in correct requirements. Many makes an attempt were made, within the final twenty years or so, to use the fracture mechanics strategies to cement, mortar, con­ crete and bolstered concrete. thus far, those makes an attempt haven't ended in a distinct set of fabric parameters that can quantify the resistance of those cementitious composites to fracture. No usual trying out equipment and a regularly authorized theoretical research are demonstrated for concrete as they're for metals.

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Tests were performed at three ages (1, 2 and 4 days).

A Fracture Mechanics Investigation of the Cracking of Fontana Dam. Report 81-7 (Cornell University 1981). 6. -G. and S. E. Swartz. oncrete. 154 (Kansas State University 1983). Report 7. , M. Modeer and P. E. Petersson. Analysis of Crack Formation and Crack Growth in Concrete by Means of Fracture Mechanics and Finite Element. Cement and Concrete Research, vol. 6 (1976) 773-781. 8. Petersson, P. E. Fracture Determination. Cement and 79-89, and Fracture Energy and Experimental Results. I, (1980) 91-101.

Proceedings of Specialty Conference on Finite Element Method in Civil Engineering (Montreal 1972) 71114. 14. Saouma, V. E. Interactive Finite Element Analysis of Reinforced Concrete: A Fracture Mechanics Approach. Report RI-5 (Cornell University 1981). 15. Baker, D. , N. M. -L. -Z. Cho and A. S. Kobayashi. Experimental Investigation of Concrete Fracture in a CLWL Specimen. To be submitted. 16. Kobayashi, T. and W. L. Fourney. Experimental Characterization of the Development of Micro-Crack Process Zone at a Crack Tip on Rock under Load.

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