Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete
Ground granulated blast furnace slag is widely used as a mineral admixture to replace partial Portland cement in the concrete industry. As the amount of slag increases, the late-age compressive strength of concrete mixtures increases. However, after an optimum point, any further increase in slag do...
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doaj-ae83b2ae9fe2433faaf8fc07daf662532020-11-24T22:29:40ZengMDPI AGMaterials1996-19442015-03-01831213122910.3390/ma8031213ma8031213Analysis of the Optimum Usage of Slag for the Compressive Strength of ConcreteHan-Seung Lee0Xiao-Yong Wang1Li-Na Zhang2Kyung-Taek Koh3Department of Architectural Engineering, Hanyang University, Ansan-Si 425-791, KoreaDepartment of Architectural Engineering, Kangwon National University, Chuncheon-Si 200-701, KoreaDepartment of Architectural Engineering, Kangwon National University, Chuncheon-Si 200-701, KoreaStructural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si 411-712, KoreaGround granulated blast furnace slag is widely used as a mineral admixture to replace partial Portland cement in the concrete industry. As the amount of slag increases, the late-age compressive strength of concrete mixtures increases. However, after an optimum point, any further increase in slag does not improve the late-age compressive strength. This optimum replacement ratio of slag is a crucial factor for its efficient use in the concrete industry. This paper proposes a numerical procedure to analyze the optimum usage of slag for the compressive strength of concrete. This numerical procedure starts with a blended hydration model that simulates cement hydration, slag reaction, and interactions between cement hydration and slag reaction. The amount of calcium silicate hydrate (CSH) is calculated considering the contributions from cement hydration and slag reaction. Then, by using the CSH contents, the compressive strength of the slag-blended concrete is evaluated. Finally, based on the parameter analysis of the compressive strength development of concrete with different slag inclusions, the optimum usage of slag in concrete mixtures is determined to be approximately 40% of the total binder content. The proposed model is verified through experimental results of the compressive strength of slag-blended concrete with different water-to-binder ratios and different slag inclusions.http://www.mdpi.com/1996-1944/8/3/1213slagconcreteoptimum usagecompressive strengthhydration model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Han-Seung Lee Xiao-Yong Wang Li-Na Zhang Kyung-Taek Koh |
spellingShingle |
Han-Seung Lee Xiao-Yong Wang Li-Na Zhang Kyung-Taek Koh Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete Materials slag concrete optimum usage compressive strength hydration model |
author_facet |
Han-Seung Lee Xiao-Yong Wang Li-Na Zhang Kyung-Taek Koh |
author_sort |
Han-Seung Lee |
title |
Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete |
title_short |
Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete |
title_full |
Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete |
title_fullStr |
Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete |
title_full_unstemmed |
Analysis of the Optimum Usage of Slag for the Compressive Strength of Concrete |
title_sort |
analysis of the optimum usage of slag for the compressive strength of concrete |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2015-03-01 |
description |
Ground granulated blast furnace slag is widely used as a mineral admixture to replace partial Portland cement in the concrete industry. As the amount of slag increases, the late-age compressive strength of concrete mixtures increases. However, after an optimum point, any further increase in slag does not improve the late-age compressive strength. This optimum replacement ratio of slag is a crucial factor for its efficient use in the concrete industry. This paper proposes a numerical procedure to analyze the optimum usage of slag for the compressive strength of concrete. This numerical procedure starts with a blended hydration model that simulates cement hydration, slag reaction, and interactions between cement hydration and slag reaction. The amount of calcium silicate hydrate (CSH) is calculated considering the contributions from cement hydration and slag reaction. Then, by using the CSH contents, the compressive strength of the slag-blended concrete is evaluated. Finally, based on the parameter analysis of the compressive strength development of concrete with different slag inclusions, the optimum usage of slag in concrete mixtures is determined to be approximately 40% of the total binder content. The proposed model is verified through experimental results of the compressive strength of slag-blended concrete with different water-to-binder ratios and different slag inclusions. |
topic |
slag concrete optimum usage compressive strength hydration model |
url |
http://www.mdpi.com/1996-1944/8/3/1213 |
work_keys_str_mv |
AT hanseunglee analysisoftheoptimumusageofslagforthecompressivestrengthofconcrete AT xiaoyongwang analysisoftheoptimumusageofslagforthecompressivestrengthofconcrete AT linazhang analysisoftheoptimumusageofslagforthecompressivestrengthofconcrete AT kyungtaekkoh analysisoftheoptimumusageofslagforthecompressivestrengthofconcrete |
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1725743608847400960 |