Mechanical Performance Of Recycled Aggregate Self-consolidating Concrete Column
| Author(s): |
Feng Yu
Chaochao Feng Shilong Wang Wei Huang Yuan Fang Shuangshuang Bu |
|---|---|
| Medium: | journal article |
| Language(s): | English |
| Published in: | Journal of Civil Engineering and Management, 26 February 2021, n. 3, v. 27 |
| Page(s): | 188-202 |
| DOI: | 10.3846/jcem.2021.14117 |
| Abstract: |
The utilization of recycled concrete aggregate (RCA) can reduce the environmental impact and decreases the cost of concrete. In this study, a comprehensive assessment of self-consolidating concrete (SCC) using RCA as partial or total replacement of coarse aggregate was conducted. Recycled concrete aggregate self-consolidating concrete (RCA-SCC) mixtures with varied water-to-cement (W/C) ratios (0.28–0.46), sand-to-aggregate (S/A) ratios (48–52%), fly ash (FA) contents (20–40%), RCA replacement ratios (0–100%), and water reducer contents (0–1.5%) were designed and tested. 5 groups of the RCA-SCC columns with different W/C and replacement ratios of RCA were also investigated. The slump flow, the J-ring flow and the cubic compressive strength, and the compressive behaviors of the RCA-SCC columns were studied. Results indicated that W/C ratio was the dominant parameter in RCA-SCC mixture, and the failure modes of the RCA-SCC columns were similar to those of the conventional concrete columns. Based on the experimental results, the mechanical performance of RCA-SCC columns was evaluated quantitatively, and a stress–strain relation model for predicting the axial compressive behavior of RCA-SCC column was proposed. This study will provide a reference for the engineering application of the environment-friendly SCC using RCA that are derived from tested or returned concretes with better performance. |
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data sheet - Reference-ID
10602642 - Published on:
17/04/2021 - Last updated on:
17/04/2021
