Crack Development Research in Extra Fine Aggregate Cement Composites

Andina Sprince, Leonids Pakrastinsh, Bruno Baskers, Liga Gaile

Abstract


The cracking properties in cement-based composites widely influences mechanical behavior of construction structures. The challenge of present investigation is to evaluate the crack propagation near the crack tip. During experiments the tension strength and crack mouth opening displacement of several types of concrete compositions was determined. For each composition the Compact Tension (CT) specimens were prepared with dimensions 150x150x12mm. Specimens were subjected to a tensile load. Deformations and crack mouth opening displacement were measured with extensometers. Cracks initiation and propagation were analyzed using a digital image analysis technique. The formation and propagation of the tensile cracks was traced on the surface of the specimens using a high resolution digital camera with 60 mm focal length. Images were captured during testing with a time interval of one second. The obtained experimental curve shows the stages of crack development.


Keywords


cement-based matrix, fibre reinforced concretes, high performance concretes, PVA fibres

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References


Brandt A M 2008 Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering Composite Structures vol. 86 pp 3-9.

Prisco M, Plizzari G, Vandewalle L 2009 Fibre reinforced concrete: new design perspectives Materials and Structures vol. 42 pp 1261-1281.

Benin A V, Semenov A S, Semenov S G 2014 Fracture analysis of reinforced concrete bridge structures with account of concrete cracking under steel corrosion Advanced Materials Research vol. 831 pp 364-369.

Sprince A, Fischer G, Pakrastinsh L, Korjakins A 2014 Crack Propagation in Concrete with Silica Particles Advanced Materials Research vol. 842 (Switzerland: Trans Tech Publications) pp 470-476.

ASTM-E647 2005 Standard test method for measurement of fatigue crack growth rates ASTM Standard vol.03.01 (US: ASTM Standard)

Pereira E B, Fischer G, Barros J A O and Lepech M 2010 Crack formation and tensile stress-crack opening behavior of fiber reinforced cementitious composites (FRCC) Proc. of Fra MCoS-7 pp 1638-1647

Naaman A E, Reinhardt H W 1996 Characterization of High Performance Fiber Reinforced Cement Composites Proc. of 2nd Int. Workshop on HPFRCC (London: E. & FN Spon) chapter 41 pp 1-24.




DOI: http://dx.doi.org/10.17770/etr2015vol1.199

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