Strength and abrasıon performance of recycled aggregate based geopolymer concrete

Asfaw Mekonnen Lakew; Mukhallad M. Al-mashhadanı; Orhan Canpolat

Strength and abrasıon performance of recycled aggregate based geopolymer concrete

Abstract

This experimental work evaluated geopolymer concrete containing fly ash and slag by partial replacement of natural coarse aggregate (NCA) with recycled coarse aggregate (RCA) to manufacture environmental-friendly concrete. The proportion of recycled aggregates considered consists of 10%, 20%, 30%, and 40% of the total coarse aggregate amount. Also, a steel fiber ratio of 0.3% was utilized. The mechanical properties and abrasion resistance of fly ash/slag-based geopolymer concrete were then assessed. Majorly, the mechanical strength of the concrete samples decreased by the increase of RCA content. The geopolymer concrete with 40% RCA gave 28.3% lesser compressive strength and 24% lower splitting tensile strength than NCA concrete at one year. Also, the flexural strength of concrete specimens was reduced by 35% (from 5.34MPa to 3.5MPa) with the incorporation of 40% RCA. The incorporation of 30% RCA caused 23% and 22.6% reduction in compressive strength at 56 days and one year, respectively. The flexural and splitting tensile strength of the specimens was not significantly reduced (less than 10%) with the inclusion of a recycled coarse aggregate ratio of up to 30%. Furthermore, the abrasion wear thickness of every concrete sample was less than 1mm. RCA inclusion of 20% produced either insignificant reduction or better strength results compared to reference mixtures. As a result, it was considered that the combination of 0.3% steel fiber and 20% recycled coarse aggregate in fly ash/slag-based geopolymer concrete leads to an eco-friendly concrete mix with acceptable short and long-term engineering properties that would lead to sustainability in concrete production and utilization sector.

Keywords

References

The article references can be accessed from the .pdf file.

Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Authors

Asfaw Mekonnen Lakew ^* This is me
0000-0002-3480-0490
Türkiye

Mukhallad M. Al-mashhadanı This is me
0000-0002-0067-6436
Türkiye

Orhan Canpolat This is me
0000-0003-2744-7876
Türkiye

Publication Date

March 25, 2022

Submission Date

May 15, 2021

Acceptance Date

August 30, 2021

Published in Issue

Year 2022 Volume: 40 Number: 1

IZ

https://izlik.org/JA38LC52SD

Cite

RIS / Bibtex

APA

Lakew, A. M., Al-mashhadanı, M. M., & Canpolat, O. (2022). Strength and abrasıon performance of recycled aggregate based geopolymer concrete. Sigma Journal of Engineering and Natural Sciences, 40(1), 155-161. https://izlik.org/JA38LC52SD

AMA

1.Lakew AM, Al-mashhadanı MM, Canpolat O. Strength and abrasıon performance of recycled aggregate based geopolymer concrete. SIGMA. 2022;40(1):155-161. https://izlik.org/JA38LC52SD

Chicago

Lakew, Asfaw Mekonnen, Mukhallad M. Al-mashhadanı, and Orhan Canpolat. 2022. “Strength and Abrasıon Performance of Recycled Aggregate Based Geopolymer Concrete”. Sigma Journal of Engineering and Natural Sciences 40 (1): 155-61. https://izlik.org/JA38LC52SD.

EndNote

Lakew AM, Al-mashhadanı MM, Canpolat O (March 1, 2022) Strength and abrasıon performance of recycled aggregate based geopolymer concrete. Sigma Journal of Engineering and Natural Sciences 40 1 155–161.

IEEE

[1]A. M. Lakew, M. M. Al-mashhadanı, and O. Canpolat, “Strength and abrasıon performance of recycled aggregate based geopolymer concrete”, SIGMA, vol. 40, no. 1, pp. 155–161, Mar. 2022, [Online]. Available: https://izlik.org/JA38LC52SD

ISNAD

Lakew, Asfaw Mekonnen - Al-mashhadanı, Mukhallad M. - Canpolat, Orhan. “Strength and Abrasıon Performance of Recycled Aggregate Based Geopolymer Concrete”. Sigma Journal of Engineering and Natural Sciences 40/1 (March 1, 2022): 155-161. https://izlik.org/JA38LC52SD.

JAMA

1.Lakew AM, Al-mashhadanı MM, Canpolat O. Strength and abrasıon performance of recycled aggregate based geopolymer concrete. SIGMA. 2022;40:155–161.

MLA

Lakew, Asfaw Mekonnen, et al. “Strength and Abrasıon Performance of Recycled Aggregate Based Geopolymer Concrete”. Sigma Journal of Engineering and Natural Sciences, vol. 40, no. 1, Mar. 2022, pp. 155-61, https://izlik.org/JA38LC52SD.

Vancouver

1.Asfaw Mekonnen Lakew, Mukhallad M. Al-mashhadanı, Orhan Canpolat. Strength and abrasıon performance of recycled aggregate based geopolymer concrete. SIGMA [Internet]. 2022 Mar. 1;40(1):155-61. Available from: https://izlik.org/JA38LC52SD