Maximum and Residual Flexural Crack Width Estimation in Reinforced Concrete Frame Members under Seismic Excitation

Shiradhonkar, Saurabh R.; Sinha, Ravi

doi:10.1061/(asce)st.1943-541x.0002116

Cited by 12 publications

(1 citation statement)

References 9 publications

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“…When the fracture width is less than 100 µm, the crack has minimal impact on the permeability of the concrete. In reinforced concrete, the maximum fracture width was directly proportional to the square of the concrete cover thickness [35]. Table 5 shows reasonable crack control of ECC with an average crack width of less than 100 µm.…”

Section: Resistance To Permeabilitymentioning

confidence: 89%

Engineered Cementitious Composites as a High-Performance Fiber Reinforced Material: A Review

Banaay¹

2023

GEOMATE

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Cementitious composites are one of the world's most consumed infrastructure construction materials because of their abundant resources, mature production process, and strong adaptability. Most of these materials, however, remain brittle. It highlights the need to develop low-cost, high-ductility cementitious materials for structural applications. These issues are the fundamental driving force behind Engineered cementitious composites (ECC) development due to the micromechanical interactions between its constituents and processing techniques. ECC is a high-performance, ultra-ductile fiber-reinforced cementitious composite material designed for high material volume and cost-sensitive applications in the construction sector. However, this material still lacks standardization regarding mix proportion and fiber used as a proper processing technique to balance economy and requirements for strength and durability. This paper aims to review some of the past researchers' design proportions and fiber types used as a reference and guide for future researchers utilizing ECC in their studies. This paper also covers ECC's results and target application in structural engineering.

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Section: Resistance To Permeabilitymentioning

confidence: 89%

Engineered Cementitious Composites as a High-Performance Fiber Reinforced Material: A Review

Banaay¹

2023

GEOMATE

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A performance-based rehabilitation strategy for RC frame buildings in moderate seismic regions

Badal,

Sinha

2024

Bull Earthquake Eng

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Maximum Drift Demands of Earthquake Damaged Reinforced Concrete Columns Based on Residual Flexure Cracks

Aydin,

Binici,

Aktas

et al. 2024

Bull Earthquake Eng

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Assessment of existing reinforced concrete (RC) structures after an earthquake is a challenging task that must somehow relate qualitative and quantitative observations in the plastic hinge regions and the associated residual deformation capacity of damaged structures. Having an estimate available for the remaining drift capacity will result in more economical and informed decisions regarding demolition or strengthening options. This study aims to develop a practical methodology to estimate the maximum drift demand of an RC column based on the residual crack width. For this purpose, fiber-based frame elements are used to model the RC column considering appropriately concrete behavior in compression and tension stiffening effects. Afterwards, the accuracy and reliability of the proposed methodology are demonstrated by validating the computational approach with two cyclic experimental results from literature and new test data for a one-bay one-story RC frame conducted within the course of this study. A comprehensive parametric study is performed for RC columns with different axial loads, longitudinal and transverse reinforcement ratios, and ground motions to exhibit the stochastic behavior. The study identifies the axial load ratio as the predominant parameter. Key findings include strong correlations between maximum drift ratios and total residual crack widths, as well as maximum compressive strains, with regression analysis yielding equations for accurate drift ratio estimation. Simple predictive models are proposed to estimate the maximum deformation demands based on observed residual crack widths. Residual cracking exceeding 5 mm poses significant risk for the columns with axial load ratios above 0.4, with 90% probability of exceedance 2% drift ratio.

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Maximum and Residual Flexural Crack Width Estimation in Reinforced Concrete Frame Members under Seismic Excitation

Cited by 12 publications

References 9 publications

Engineered Cementitious Composites as a High-Performance Fiber Reinforced Material: A Review

Engineered Cementitious Composites as a High-Performance Fiber Reinforced Material: A Review

A performance-based rehabilitation strategy for RC frame buildings in moderate seismic regions

Maximum Drift Demands of Earthquake Damaged Reinforced Concrete Columns Based on Residual Flexure Cracks

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