Available online at www.CivileJournal.org Civil Engineering Journal (E-ISSN: 2476-3055; ISSN: 2676-6957) Vol. 7, No. 08, August, 2021 1341 Sustainable Mortar Made with Local Clay Bricks and Glass Waste Exposed to Elevated Temperatures Zaid Ali Hasan 1* , Shereen Qasim Abdulridha 1 , S. Z. Abeer 2 1 Technical Institute of Babylon, Al-Furat Al-Awsat Technical University (ATU), Najaf, Iraq. 2 Roads and Transport Department, College of Engineering, University of Al-Qadisiyah, Al-Diwaniyah, Iraq. Received 08 April 2021; Revised 18 July 2021; Accepted 24 July 2021; Published 01 August 2021 Abstract The present study involved assessing the replacement of fine aggregate in the mortar with sustainable local materials like clay bricks and glass included 168 specimens (cubes and prisms). Seven mixtures were cast for this work, one control mix (R1) with 100% natural sand whereas mixes from R2 to R5 have 10% and 20% replacing natural sand with waste clay bricks and waste glass separately and respectively. Mix R6 was included 20% replacing sand with combination waste materials (10% waste clay bricks with 10% waste glass). Mix R7 has involved the same percent of replacing the previous mix R6 but with adding Polypropylene fibers 1% by volume. The samples have put in an electrical oven for one hour at 200, 400, and 600 ᵒC then cooled to room temperature to be tested and compared with samples at normal temperature 24 ᵒC. Different mechanical tests were adopted involved flow tests, density, weight loss, compressive strength, flexural strength, and water absorption. The results at different temperatures were discussed where many findings were specified. The flexural strength at 400 ᵒC was showed improving by 56% for 20% waste clay brick and 69% with 10% waste glass, as well all combination mixes illustrated higher strength than the control. Keywords: High Temperatures; Sustainable Materials; Recycle Aggregate; Compressive Strength. 1. Introduction One of the challenges faces generally human beings and especially researchers, is pollution, due to the accumulation of demolition constructions or by-product materials from manufacturing. The use of such recyclable materials in construction is considered eco-friendly and appropriate to reduce serious problems such as nonbiodegradability, accumulation of wastes, and protect natural resources from consumption. On the other hand that would open the field forwards the researchers to explore the desirable produced characteristics and the limitations [1-5]. Waste produced from the construction and building manufacture has increased internationally, includes clay bricks and concrete demolition. The United States was produced about 170 million tons of related materials in (2003), as well, Canada produced in (2004) 15.5 million tons, and in (2008) 17.3 million tons [6]. Numerous researches investigated the ability to use the waste of clay bricks in mortars, and have been obtained promising results [7-8]. Bektas et al. (2009) [9] studied experimentally the impacts of recycling the clay bricks replaced parts of the natural sand on the properties of mortar. The results indicated that the mortar flowability was reduced as the percent of replacement increased, but there was a limited effect on the compressive strength. The characteristics and * Corresponding author: zaid.hasan.bib@atu.edu.iq; zeidengineer_2002@yahoo.com http://dx.doi.org/10.28991/cej-2021-03091729 © 2021 by the authors. Licensee C.E.J, Tehran, Iran. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).