02103nam a2200265   450000500170000000800410001703500150005810000270007324500610010026000520016130000100021349000220022350001620024550200580040752009860046565000230145165000220147465000360149670000340153270000460156670000480161271000580166081000540171885600650177220260818143146.0200198         th                  eng    a.b103590721 aLaghari, Abdul Rafique10aInfluence of aggregate type on tensile creep of concrete  aBangkok :bAsian Institute of Technology,c1976  a38 p.1 aThesis ;vno. 955  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand  aThesis (M.Eng.) - Asian Institute of Technology, 1976  aThe influence of four different aggregate types on tensile creep  of concrete was investigated. All specimens were loaded to 40% of the ultimate tensile strength of the respective concrete, determined 28 days after casting. In Series I, tensile creep and swelling was measured up to 90 days at 95 ± 5% R. H and 72 ± 3°F. Series II specimens were kept in an air conditioned room at 78 ±5% R.H and 72 ±6°F for 42 days.  Tensile specific creep (creep per p.s.i) was nearly the same in  the case of Series I concretes irrespective of the type of aggregate used. However, in Series II, the specific creep was found to be highest for sandstone concrete and lowest for limestone concrete; concretes made with Andesite and Gravel having intermediate values.  The results indicate that tensile creep does not seem to be influenced with aggregate type at higher relative humilities whereas it is inversely proportional to modulus of elasticity of the aggregates in  drying conditions . 0aCreep of materials 0aCreep of concrete 0aAggregates (Building materials)1 aCook, David J., eChairperson1 aPama, Ricardo P., eExamination Committee1 aTakemiya, Hirokazu, eExamination Committee2 a The Royal Government of Denmark, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. 955  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B22789