Multi-effect of superplasticisers main and side-chain length on cementitious systems with fly ash

Süleyman ?zen; Muhammet G?khan Altun; Ali Mardani-AghabaglouKambiz Ramyar

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Multi-effect of superplasticisers main and side-chain length on cementitious systems with fly ash

机译：Multi-effect of superplasticisers main and side-chain length on cementitious systems with fly ash

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In this study, the effect of main and side chain lengths of polycarboxylate ether-based high-range water-reducing admixtures (WRAs) on the fresh properties, compressive strength and water absorption of cementitious systems containing 0, 15, 30 and 45?wt% fly ash was investigated. For this purpose, three WRAs with the same molecular weight but different chain lengths were produced. According to the test results, the flowability of the paste and mortars was negatively affected when the length of the main and side chains of the admixture was longer or shorter than a certain value. This adverse effect is thought to arise from weakening of the adsorption of the admixture with an increase in its chain lengths. However, when the main and side chain lengths of the admixture were shorter or longer than a certain value, the time-dependent flow properties of the mortar mixtures improved. The main and side chain lengths of the WRAs did not have a significant effect on the compressive strength and water absorption capacity of the mortar mixtures. However, irrespective of the admixture characteristics, with an increase in fly ash substitution, the flow and time-dependent flow properties of the mixtures were negatively affected but their water absorption decreased.

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《Magazine of concrete research》 |2022年第14期|727-739|共13页
作者
Süleyman ?zen; Muhammet G?khan Altun; Ali Mardani-AghabaglouKambiz Ramyar;
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作者单位

Department of Civil Engineering, Faculty of Engineering and Natural Sciences, Bursa Technical University, Yildirim-Bursa;

Muhammet G?khan Altun Civil Engineer, Bursa Metropolitan Municipality, Osmangazi-Bursa;

Department of Civil Engineering, Faculty of Engineering, Bursa Uludag University, Nilüfer-BursaDepartment of Civil Engineering, Faculty of Engineering, Ege University, Bornova-Izmir;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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关键词
admixture; compressive strength; flowability;

Multi-effect of superplasticisers main and side-chain length on cementitious systems with fly ash

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