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Effect of magnitude of sustained loading on the long-term deflection of RC beams

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper investigates the influence of the magnitude of sustained loading and tension steel percentage on the creep and shrinkage deflections of the reinforced concrete (RC) beams of different concrete grades. The magnitude of sustained loading was taken as 25% and 50% of the first crack load. Three concrete grades of 45, 35 and 25 MPa and two tension steel percentages of 0.77% and 1.21% were used. The long-term deflection was measured under the sustained four-point bending at the ages of 1, 3, 7, 14, 21, 30, 60, 90, 120 and 150 days. The shrinkage deflection of RC beams for the three concrete grades was measured at the same ages on specimens under their own weight. Based on the experimental investigations author's earlier model was extended to predict the total deflection due to creep and shrinkage of RC beams for varying magnitudes of sustained loading, and different compres-sive strengths of concrete.
Rocznik
Strony
779--791
Opis fizyczny
Bibliogr. 38 poz., rys., tab., wykr.
Twórcy
autor
  • Department of Civil Engineering, Aligarh Muslim University, Aligarh, India
autor
  • Chair of Research and Studies for Strengthening and Rehabilitation of Structures, Department of Civil Engineering, King Saud University, Riyadh, Saudi Arabia
autor
  • Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-b081ac16-f286-44d6-8e91-cf638284e6e5
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