Micro-concrete composites for strengthening of RC frame made of recycled aggregate concrete

Comingstarful Marthong; Risukka N. Pyrbot; Stevenly L. Tron; Lam-I D. Mawroh; Md. Sakil A. Choudhury; Ganesh S. Bharti

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저자정보: Comingstarful Marthong (National Institute of Technology Meghalaya) Risukka N. Pyrbot (National Institute of Technology Meghalaya) Stevenly L. Tron (National Institute of Technology Meghalaya) Lam-I D. Mawroh (National Institute of Technology Meghalaya) Md. Sakil A. Choudhury (National Institute of Technology Meghalaya) Ganesh S. Bharti (National Institute of Technology Meghalaya)

저널정보: 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.22 No.5

발행연도: 2018.1

수록면: 461 - 468 (8page)

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In this paper, to access the suitability of recycled aggregate for structural applications, concrete strength i.e., compressive, tensile and flexural strength were evaluated and compared with those specimens made of natural aggregates. Test results indicated that 30 to 42% of the mentioned strength decreases. To study the performance of frame structures made of recycled aggregate concrete (RAC) two reinforced RAC frames were prepared and tested under monotonic loading. The joint regions of one of the RAC frame were casted with micro-concrete. A reference specimen was also prepared using natural aggregate concrete (NAC) and subjected to a similar loading condition. The RAC frame resulted in a brittle mode of failure as compared to NAC frame. However, the presence of a micro-concrete at the joint region of an RAC frame improved the damage tolerance and load resisting capacity. Seismic parameter such as energy dissipation, ductility and stiffness also improves. Conclusively, strengthening of joint region using micro-concrete is found to have a significant contribution in improving the seismic performance of an RAC frame.

참고문헌 (54)

참고문헌 신청

Gholamreza Abdollahzadeh / 2016 / Predicting of compressive strength of recycled aggregate concrete by genetic programming / Computers and Concrete, An International Journal 18(2):155~163

2008 / ACI Committee 318-08, Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary (ACI 318R08) / American Concrete Institute

Ajdukiewicz, A / 2002 / Influence of recycled aggregates on mechanical properties of HS/HPC / Cement Concrete Compos 2:269~279

Deepankar K. Ashish / 2018 / Successive recycled coarse aggregate effect on mechanical behavior and microstructural characteristics of concrete / Computers and Concrete, An International Journal 21(1):39~46

S. Balaji / 2017 / Study on Exterior RC Beam-Column Joints Upgrade with SIFCON in Joint Core Under Reversed Cyclic Loading / KSCE Journal of Civil Engineering 21(1):346~352

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