02939nam a2200397 4500 20260818095051.0 250398 th eng .b10228469 AIT Thesis no. 1324 Hoque, Mohammed Mozammel Effect of short steel fibers on the first crack strength of cement mortar in direct tension Bangkok : Asian Institute of Technology, 1978 38 p. Thesis ; no. 1324 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand Thesis (M.Eng.) - Asian Institute of Technology, 1978 This study deals with an analytical and experimental investigation of the influence of short steel fiber reinforcement on the first crack strength of cement mortar in uniaxial tension. An attempt is made to predict theoretically the first crack strength using energy balance approach and effective number of fiber concepts. The effect of random orientation of short fibers is taken into consideration by the introduction of dimensionless factors which are based on the assumption that the geometric centers of the fibers are uniformly distributed in space and that any fiber has an equal probability of being oriented at any angle to the directions of applied stress. The presence of short steel fibers increases the first crack strength provided the volume fraction of fibers used exceed certain absolute minimum values which are suggested. There is a critical volume fraction of fibers below which only the first crack strength is increased without any increase in the ultimate tensile strength. The theoretically predicted results are experimentally verified by con ducting uniaxial tensile tests and the experimental and theoretical values are shown to be in good agreement. Strength of materials Fibrous composites Fracture Pama, Ricardo P., Chairperson Tanabe, Tada-Aki, Examination Committee Usami, Tsutomu, Examination Committee UNDP, Bangladesh, Scholarship Donor Asian Institute of Technology. Thesis ; no. 1324 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B22921 .b10228469 mnait x 251021 2 951012 m a x 0 mnait mnarc 20 40 Barcode : 30050002896669 CREATED : 1994-05-17 RECORD # : i10278217 LPATRON : 1010952 LCHKIN : 1998-09-08 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 3 Barcode : 30050160082516 CREATED : 2016-05-13 RECORD # : i12977159 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34643 34643 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1324 30050002896669 2026-08-18 09:50:51 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 1324 30050160082516 2026-08-18 09:50:51 2026-08-18 40