Study on Distribution Feature of Fracture Toughness of Interface between Coarse Aggregate and Hardened Cement Mortar in Concrete

Feng Xing; Xiang Yong Guo; Fa Guang Leng; Kun He Fang; Ren Yu Zhang

doi:10.4028/www.scientific.net/KEM.302-303.514

Paper Titles

Influence of Boundary Conditions on Pore Percolation in Model Cement Paste
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Logarithmic Decrement and Dynamic Modulus of Coated Cement Concrete
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Study on Characterization of Hardened Concrete from Water Absorption-Time Curve
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Strength of Roller Compacted Concrete
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Study on Distribution Feature of Fracture Toughness of Interface between Coarse Aggregate and Hardened Cement Mortar in Concrete
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Static Properties of Plain Reactive Powder Concrete Beams
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Pore Structure and Chloride Ion Transport Mechanisms in Concrete
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Experimental Study on Stress-Strain Relationship of New-Old Concrete
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Properties and Microstructure of the New Phosphate Bonded Magnesia Cement
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 302-303Study on Distribution Feature of Fracture...

Study on Distribution Feature of Fracture Toughness of Interface between Coarse Aggregate and Hardened Cement Mortar in Concrete

Abstract:

Based on available test data and fracture criterion, by using probability fracture mechanics and mathematical statistical method, the distribution feature of fracture toughness, IC K , of interface between coarse aggregate and hardened cement mortar is analyzed, and a method of defining the least number of specimens for testing fracture toughness is provided. Weibull distribution or lognormal distribution is often used to analyze lifetime problem, so the two models are preferentially considered. The analysis shows that the fracture toughness conforms to lognormal distribution with degree of confidence g =0.9, relative deviation d =0.05 and the least number of specimens of 13. The study results can be used in the probability fracture analysis and construction quality control of interface between coarse aggregate and hardened cement mortar.

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Periodical:

Key Engineering Materials (Volumes 302-303)

Pages:

514-520

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.302-303.514

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Online since:

January 2006

Authors:

Feng Xing, Xiang Yong Guo, Fa Guang Leng, Kun He Fang, Ren Yu Zhang

Keywords:

Distribution Feature, Fracture Toughness, Lognormal Distribution

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