TY - GEN

T1 - Influence of reinforcement ratio (ρ) and repeated load (n) to crack width (w) on one way concrete slab

AU - Md, Agoes Soehardjono

AU - Igp, Raka

AU - Suprobo, Priyo

PY - 2006

Y1 - 2006

N2 - 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).

AB - 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).

KW - Bond fatigue

KW - Crack width

KW - Reinforcement ratio

KW - Repeated load

KW - Stress ratio

UR - http://www.scopus.com/inward/record.url?scp=84886669239&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84886669239

SN - 9748257177

SN - 9789748257174

T3 - Real Structures: Bridges and Tall Buildings - Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010

SP - 619

EP - 624

BT - Real Structures

T2 - 10th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2010

Y2 - 3 August 2006 through 5 August 2006

ER -