Liu Hua, . TECHNICAL COMPARISON AND ECONOMIC ANALYSIS OF BUILDING STRENGTHENING[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(4): 88-90. doi: 10.13204/j.gyjz200704024
Citation:
Wang Haichao, Wang Zhijun, Gao Shuling, Sun Fangning, Zhang Lingling, Qin Jingping. EXPERIMENTAL DETERMINATION OF FRACTURE TOUGHNESS OF THREE-POINT BENDING UHPCC BEAM AND INFLUENCE LAW[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(9): 106-110. doi: 10.13204/j.gyjz201309020
Liu Hua, . TECHNICAL COMPARISON AND ECONOMIC ANALYSIS OF BUILDING STRENGTHENING[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(4): 88-90. doi: 10.13204/j.gyjz200704024
Citation:
Wang Haichao, Wang Zhijun, Gao Shuling, Sun Fangning, Zhang Lingling, Qin Jingping. EXPERIMENTAL DETERMINATION OF FRACTURE TOUGHNESS OF THREE-POINT BENDING UHPCC BEAM AND INFLUENCE LAW[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(9): 106-110. doi: 10.13204/j.gyjz201309020
Through the tests of 14 sets of three-point bending UHPCC beam specimens with the different compressivestrength,sizes and initial crack-depth ratios,their double-K fracture parameters are studied. The initial fracturetoughness KiniIC and unstable fracture toughness KunIC are calculated from the initial load Pini,the maximum load Pmax andcritical crack mouth open displacement CMODC . The results indicate that the KiniIC and KiniIC of UHPCC and cementbasedspecimens increase with the increasing of compressive strength. The KiniIC and KunIC of UHPCC significantlyincrease with the decrease of initial crack-depth ratio,but the KiniIC (KunIC ) of cement-based specimens increase a little.The KiniIC and KunIC of UHPCC significantly increase with the increase of specimen size,but that of cement-basedspecimens present some discreteness.
[4] Li V C.Engineered Cementitious Composites Tailored CompositesThrough Micromechanical Modeling[C]// Banthia N,Bentur A,Mufti A.Fiber Reinforced Concrete: Present and the Future.Montreal: Canadian Society for Civil Engineering,1998:64-97.
[6] Xu Shilang,Reinhardt H W.Determination of Double-Kcriterionfor Crack Propagation in Quasi-brittle Materials, Part Ⅰ:Experimental Investigation of Crack Propagation[J].InternationalJournal of Fracture,1999,98(2):111-149.
[7] Xu Shilang,Reinhardt H W.Determination of Double-Kcriterion forCrack Propagation in Quasi-Brittle Materials,partⅡ: AnalyticalEvaluating and Practical Measuring Methods for Three-PointBending Notched Beams[J].International Journal of Fracture,1999,98(2):151-177.
[9] Xu Shilang,Reinhardt H W.A Simplified Method for DeterminingDouble-K Fracture Parameters for Three-Point Bending Tests[J].International Journal of Fracture,2000,104:181-209.
Liu Hua, . TECHNICAL COMPARISON AND ECONOMIC ANALYSIS OF BUILDING STRENGTHENING[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(4): 88-90. doi: 10.13204/j.gyjz200704024
Liu Hua, . TECHNICAL COMPARISON AND ECONOMIC ANALYSIS OF BUILDING STRENGTHENING[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(4): 88-90. doi: 10.13204/j.gyjz200704024