Low Carbon Concretes Incorporating Blast furnace Slag and Cement Kiln Dust in Oman

2022 Advances in Science and Engineering Technology International Conferences (ASET) Pub Date : 2022-02-21 DOI:10.1109/ASET53988.2022.9735059

Sokrates Ioannou, M. Chowdhury, A. Ziadat

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Abstract

Alternative cementitious binders that are based on activation of industrial by-products with minimal amounts of Portland cement (PC) are promising low carbon candidates that can potentially complement Oman’s growing concrete industry - an industry currently faced with a number of challenges. This paper aims to explore the potential for utilizing concrete blends of CEM I, blast furnace slag (GGBS) and cement kiln dust (CKD) at strategic proportions ranging from 40-75% for GGBS and 0-35% for CKSD, in order to determine optimally performing mixes at sustainable quantities. Fresh, mechanical and permeation properties of CEM I/GGBS/CKD concrete mixes were investigated and compared against a reference PC- based concrete. The results showed that moderate amounts of GGBS and CKD within concrete may not pose any risks related to the rheology of the concrete, and moreover, an optimum combination comprising of 55% GGBS and 20% CKD appears to offer promising performance aspects related to density, strength and absorption rates.

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阿曼高炉炉渣与水泥窑尘混合的低碳混凝土

使用少量波特兰水泥(PC)激活工业副产品的替代胶凝粘合剂是有前途的低碳候选材料，可以潜在地补充阿曼不断增长的混凝土行业，该行业目前面临着许多挑战。本文旨在探索以GGBS的40-75%和CKSD的0-35%的战略比例利用CEM I，高炉渣(GGBS)和水泥窑粉尘(CKD)的混凝土混合物的潜力，以确定可持续数量的最佳性能混合物。研究了CEM I/GGBS/CKD混合混凝土的新鲜、力学和渗透性能，并与参考PC基混凝土进行了比较。结果表明，混凝土中适量的GGBS和CKD可能不会对混凝土的流变性造成任何风险，此外，由55% GGBS和20% CKD组成的最佳组合似乎在密度、强度和吸收率方面提供了有希望的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 Advances in Science and Engineering Technology International Conferences (ASET)

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