Effect of fly ash and waste glass powder as a fractional substitute on the performance of natural fibers reinforced concrete

被引:24
|
作者
Althoey, Fadi [1 ]
Zaid, Osama [2 ]
Majdi, Ali [3 ]
Alsharari, Fahad [4 ]
Alsulamy, Saleh [5 ]
Arbili, Mohamed M. [6 ]
机构
[1] Najran Univ, Coll Engn, Dept Civil Engn, Najran, Saudi Arabia
[2] Swedish Coll Engn & Technol, Dept Civil Engn, Rahim Yar Khan 47070, Pakistan
[3] Al Mustaqbal Univ Coll, Dept Bldg & Construct Tech Engn, Hillah 51001, Babylon, Iraq
[4] Jouf Univ, Civil Engn Dept, Sakaka 72388, Jouf, Saudi Arabia
[5] King Khalid Univ, Coll Engn, Dept Architecture & Planning, Abha 61421, Saudi Arabia
[6] Erbil Polytech Univ, Erbil Tech Engn Coll, Dept Tech Civil Engn, Erbil 44001, Iraq
关键词
Waste glass; Fly ash; Coconut fibers; Strength properties; FTIR; SELF-COMPACTING-CONCRETE; PARTIAL REPLACEMENT; FINE AGGREGATE; RECYCLED GLASS; COCONUT-FIBER; DURABILITY; FRESH; NANOSILICA; STRENGTH; MORTARS;
D O I
10.1016/j.asej.2023.102247
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Stockpiling and landfilling of waste glass (WG) is becoming a severe environmental issue around the World as hundreds of tons of WG are dumped on the land. The present research assesses the behavior of WG in a concrete mixture as a partial replacement of sand to attain the optimal percentage of waste glass. Due to the production of ordinary Portland cement (OPC), the natural reserves of limestone are depleting fast, and the production of OPC also leads to a high proportion of carbon dioxide (CO2), so it is essential to utilize industrial by-products such as fly ash (FA) to replace cement partially. In the current study, the WG is used as a fractional substitute of sand in different proportions (14 %, 15 %, 16 %, 17 %, 18 %, 19 %, 20 %), with 20 % FA as a replacement for OPC, with 2.5 % coconut fibers (CFs) to improve the flexural strength of concrete. Engineering properties such as compressive and flexural strength, water permeability, sorptivity, density, voids ratio, resistance against fire, Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) spectra were assessed. The outcomes showed that the M4 mixture (WG16-FA20-CFs2.5) had the utmost optimal performance, as 15.8 % and 9.57 % compression strength and flexural strength were improved at the curing of 90 days. During exposure of samples to fire, concrete with 16 % WG lost only 38.7 %, 44.2 % mass and compressive strength at 600 degrees C, which was the most lowered among other mixtures. Because of the utilization of FA, the concrete's matrix gets denser, leading to improved water-related characteristics of concrete. It was observed that adding more than 16 %, WG led to reduced strength and durability properties of concrete. The current research confirmed that the 16 % WG, 20 % FA, and 2.5 % CFs could be replaced in concrete to produce improved, eco-friendly concrete.(c) 2023 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/ by-nc-nd/4.0/).
引用
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页数:18
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