Calculation Method of Shirinkage Crack Width in Reinforced Concrete Wall Using Bond-Loss Length

Yoshiteru, Ono; Seo, Taeseok

doi:10.3130/aijs.73.165

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Based on the Japanese guidelines (AIJ 2006) and the work of Nakagawa et al (2008), the corresponding bond length loss was approximately 400 mm; therefore, the obtained crack distribution was considered reasonable. The relationship between the total load and the average strain in the wet-cured RC prism is shown in Fig.…”

Section: Impact Of Drying Shrinkagementioning

confidence: 93%

Tension Stiffening Affected by Radiation-induced Volume Expansion of Aggregate

Kambayashi

Maruyama

Kontani

et al. 2023

ACT

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The tension stiffening behavior of reinforced concrete (RC) prisms, affected by the aggregate volume expansion induced by neutron irradiation, were numerically investigated using a rigid body spring network model. First, the model was validated by comparison with the uniaxial tension test results of wet-and dry-cured (with volume contraction of concrete) RC prisms. Subsequently, different degrees of expansion strain were applied to the aggregate elements in the RC prism model and the uniaxial tension loading was simulated again. Tension stiffening decreased under larger radiation-induced volume expansion of the aggregate owing to the corresponding decrease in the concrete tensile strength with increasing damage, this behavior changed considerably according to the restraint condition. Indeed, the Young's modulus of the restrained concrete after aggregate expansion was larger than that of the unrestrained concrete after aggregate expansion. However, the compressive stress in the concrete after aggregate expansion was effectively transmitted to the rebar during uniaxial tension loading; this behavior indicated that RC could maintain its integrity under uniaxial tension even after 0.5% aggregate linear expansion.

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Section: Impact Of Drying Shrinkagementioning

confidence: 93%

Tension Stiffening Affected by Radiation-induced Volume Expansion of Aggregate

Kambayashi

Maruyama

Kontani

et al. 2023

ACT

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“…First, we calculate the number of drying-shrinkage cracks in walls by substituting the final values of drying-shrinkage strains into the prediction equation by In et al 25 At this time, in order to evaluate the fluctuation, we use a coefficient variation of 0.3 in the normal distribution in accordance with the residuals of the prediction equation of the creep strain, the drying-shrinkage strain, and the elastic modulus by Sato et al [26][27][28] We also assume the following: (a) the number of cracks in the slab on the 10th floor or above is equivalent to it in the slab on the 10th floor, (b) cracks penetrate walls in the vertical direction, and (c) in the concrete around cracks, the equivalent bond-loss area 29 loses its airtightness and alkalis with no relation to the crack width.…”

Section: Deterioration Mechanisms Of Structuresmentioning

confidence: 99%

Agent‐based modeling of super‐long‐term maintenance processes for RC building groups: Stochastic study of risks of building groups by super‐long‐term combined deterioration Part 2

Miyoshi

Kitagaki

Noguchi

2020

Japan Architectural Review

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“…2 Failure of resin injections with middle viscosity is considered seriously. Type-Br,Cr,Er 1 All relations are about cracks with rust fluid and suitable for Walls 25) .…”

Section: Type-dr Resin Injection For Cracksmentioning

confidence: 99%

Agent Base Modelling About Super Long-Term Maintenance Process for Rc Building Group

Miyoshi

Kitagaki

Noguchi

2018

Nihon Kenchiku Gakkai Kozokei Ronbunshu

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In this paper, cracks of concrete proceeded from corrosion of reinforcements are analyzed as indices of super long-term combined deterioration processes of RC building groups with finishing materials, pre-induced cracks and maintenance. Specifications for finishing materials are systemized by permeability, deterioration mechanism, deterioration speed and demeanor after repairs and Agent Base Modelling is adopted about decision-making for building specifications. It is clarified that the average acceleration period arrival rates vary in line with the characteristics of each scenario and are less than repair limits for the group and are one second of 3 upper confidence limits.

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Calculation Method of Shirinkage Crack Width in Reinforced Concrete Wall Using Bond-Loss Length

Cited by 3 publications

References 2 publications

Tension Stiffening Affected by Radiation-induced Volume Expansion of Aggregate

Tension Stiffening Affected by Radiation-induced Volume Expansion of Aggregate

Agent‐based modeling of super‐long‐term maintenance processes for RC building groups: Stochastic study of risks of building groups by super‐long‐term combined deterioration Part 2

Agent Base Modelling About Super Long-Term Maintenance Process for Rc Building Group

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