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- W2347416101 abstract "The three-point bending beam fracture test for cement paste and mortar specimens with different strengths,dimensions and initial crack-depth ratios was carried out.According to the measured maximum load P_(max) and the corresponding crack mouth opening displacement CMOD_c the unstable fracture toughness K~(un)_(Ic) of cement paste and mortar were evaluated.The initial fracture toughness K~(ini)_(Ic) was measured by electric resistance strain gauge technique.The observation shows that apparent stable crack propagation occurred prior to the unstable failure.The test results show that the K~(ini)_(Ic) and K~(un)_(Ic) of cement paste and mortar increase with the increase of compression strength.The K~(ini)_(Ic) of cement paste keeps constant with the change of beam depth and initial crack-depth ratio and is independent of size.While for mortar,with the increase in beam depth the K~(un)_(Ic) does not change,but the K~(ini)_(Ic) decreases." @default.
- W2347416101 created "2016-06-24" @default.
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- W2347416101 date "2008-01-01" @default.
- W2347416101 modified "2023-09-23" @default.
- W2347416101 title "Determination of mode I fracture toughness of cement paste and mortar" @default.
- W2347416101 hasPublicationYear "2008" @default.
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