Influence of reinforcement ratio (ρ) and repeated load (n) to crack width (w) on one way concrete slab

Agoes Soehardjono Md, Raka Igp, Priyo Suprobo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Problem of crack in a reinforced concrete structure still became a major issue for researchers. Current research is not shown a satisfactory result, particularly on the effect of repeated load on the crack width. The experiment was conducted using a one way concrete slab. The analytical model and the experiment result were used to analyze the maximum crack width. The Carpinteri method was used to analyze the initial crack depth and the fatigue crack growth rate on the composite materials (reinforced concrete slab). The result showed that at 10 Hz load frequency, steel stress ratio, reinforcement ratio and repeated load do affect the maximum crack width until bond fatigue limit state by three linear model includes: (i) initial stage wo, (ii) increased stage w and (iii) bond fatigue stage wf, where wo is the initial crack width and wf is the bond losses crack width. Based on concrete cover c/h = 0,15, w ≤ 0,30 mm, wf/wo = 1,30, and fs/fy ≤ 0,50. Therefore, we are proposed the spacing of one way concrete slab under repeated load shall not exceed 110.000/fs - 6,34 c (mm).

Original languageEnglish
Title of host publicationReal Structures
Subtitle of host publicationBridges and Tall Buildings - Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Pages619-624
Number of pages6
Publication statusPublished - 2006
Event10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010 - Bangkok, Thailand
Duration: 3 Aug 20065 Aug 2006

Publication series

NameReal Structures: Bridges and Tall Buildings - Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Volume4

Conference

Conference10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010
Country/TerritoryThailand
CityBangkok
Period3/08/065/08/06

Keywords

  • Bond fatigue
  • Crack width
  • Reinforcement ratio
  • Repeated load
  • Stress ratio

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