03445nam a2200409 4500 20260818094845.0 060898 th eng .b10226412 AIT Thesis no. ST-80-17 Noorajan Effect of aggregate properties on strength of gap-graded concrete Bangkok : Asian Institute of Technology, 1980 iv, 53 p. Thesis ; no. ST-80-17 A thesis submitted in partial fulfillment of the requirements for the degree of master of engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1980 Four types of coarse aggregate locally available in Thailand were tested for their physical and mechanical properties. Tests were made with different types and sizes of coarse aggregate to study the effect of aggregate properties on strength and workability of gap- graded concrete. Test results showed that the workability of fresh gap-graded concrete was considerably affected by the types and size distribution of aggregate. Among the four types of aggregate tested, sandstone produced concrete with the least workability whereas gravel gave the most workable concrete without segregation. Increasing the size of aggregate, both coarse and fine, led to a more workable concrete. gate. Test results indicated that the mechanical properties of gap-graded concrete were considerably affected by the properties of coarse aggregate used therein. Gap-graded concrete made with sandstone aggregate gave the highest strength and exhibited, in spite of the highest strength, lowest modulus of elasticity. This phenomenon is mainly caused by the absorption capacity, compressibility and bond strength between matrix and surface of coarse aggregate The modulus of elasticity of gap-graded concrete was directly related to the modulus of elasticity of gap- graded concrete. The design method suggested by LI and RAMAKRISHNAN (1) can be used to produce an optimum mix proportion for all tested crushed aggregates. However, for natural aggregates like gravel this design method has to be modified in order that an optimum proportion is attained. Aggregates (Building materials) Testing Pichai Nimityongskul, Chairperson Yamamoto, Yasuhiko, Examination Committee Kawaguchi, Masahiro, Examination Committee Canadian Government, Scholarship Donor Asian Institute of Technology. Thesis ; no. ST-80-17 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B22131 .b10226412 mnait s 250521 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003079471 CREATED : 1995-10-14 RECORD # : i10275101 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003461828 CREATED : 1995-10-14 RECORD # : i10275113 LPATRON : 1026599 LCHKIN : 2016-08-28 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160013834 CREATED : 2016-04-04 RECORD # : i1292233x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34122 34122 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ST-80-17 30050003079471 2026-08-18 09:48:45 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ST-80-17 30050003461828 2026-08-18 09:48:45 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. ST-80-17 30050160013834 2026-08-18 09:48:45 1 2026-08-18 40