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LIU Chao, BAI Guo-liang, YIN Lei. CALCULATION METHOD FOR CRACK WIDTH IN RAC BEAM BASED ON LONG-TERM LOADING EFFECTS[J]. Engineering Mechanics, 2014, 31(6): 124-131,137. DOI: 10.6052/j.issn.1000-4750.2012.12.0974
Citation: LIU Chao, BAI Guo-liang, YIN Lei. CALCULATION METHOD FOR CRACK WIDTH IN RAC BEAM BASED ON LONG-TERM LOADING EFFECTS[J]. Engineering Mechanics, 2014, 31(6): 124-131,137. DOI: 10.6052/j.issn.1000-4750.2012.12.0974
shu

CALCULATION METHOD FOR CRACK WIDTH IN RAC BEAM BASED ON LONG-TERM LOADING EFFECTS

  • 1.

    Materials Science and Engineering of Post-Doctoral Research Station, Xi’an University of Architecture & Technology, Xi’an, Shaanxi 710055, China

  • 2.

    School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an, Shaanxi 710055, China

  • 3.

    School of Science, Xi’an University of Architecture & Technology, Xi’an, Shaanxi 710055, China

  • 4.

    Jiangsu Posts & Telecommunications Planning and Designing Institute CO.LTD, Nanjing, Jiangsu 210018, China

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  • Received Date: December 16, 2012
  • Revised Date: March 27, 2013
    Graphical Abstract
    • Abstract
  • Based on long-term crack width experiments on recycled aggregate concrete(RAC) beams with different recycled material replacement rates, the development of crack widths over time between the different beams was compared. The results show that the period of rapid cracking growth is postponed in recycled aggregate concrete beams, and also of longer duration than in normal concrete beams. The internal lever arm coefficient, average crack spacing, and steel strain non-uniformity coefficient were fitted, and a formula for calculating maximum short-term crack width is established. Its calculation results have satisfactory precision. After analyzing additional crack width time-varying coefficients, formula for maximum crack width an RAC beam with varying replacement rates is established.
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    • References (13)
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