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首页> 外文期刊>Construction and Building Materials >The influence of main and side chain densities of PCE superplasticizer on engineering properties and microstructure development of slag and fly ash ternary blended cement concrete
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The influence of main and side chain densities of PCE superplasticizer on engineering properties and microstructure development of slag and fly ash ternary blended cement concrete

机译:PCE高效减水剂主链和侧链密度对矿渣和粉煤灰三元掺合水泥混凝土工程性能和微观结构发展的影响

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摘要

Ground Granulated Blast Furnace Slag-Pulverized Fly Ash (GGBS-PFA) ternary blended cement concretes are commonly applied in construction to reduce carbon footprint of concrete materials. Nevertheless, the interaction of polycarboxylate (PCE) polymer, the third generation super-plasticizer used in concrete manufacturing, with this concrete remains scarcely explored. For effective and optimum performance of the PCE in ternary blended concrete production, the main and side chain molecular structure is a predominant consideration. Thus, this study was aimed to derive the influence of PCE polymers with various main and side chain densities on the engineering properties and microstructural development of GGBS-PFA ternary blended cement concretes. The laboratory tests conducted in the study includes flow table test, flexural strength, compressive strength and ultrasonic pulse velocity (UPV). Besides, thermogravimetric analysis (TGA) and microstructure assessment were determined for thermal decompositions analysis and hydration kinetics assessment. It was observed that the water-binder ratio of GGBS-PFA ternary blended cement concretes can be reduced effectively with PCE (1:1), PCE (1:2), PCE (1:4) and PCE (1:8), respectively. Besides, GGBS-PFA ternary blended cement concrete with PCE (1:8) provides optimal mechanical strength performance. (C) 2020 Elsevier Ltd. All rights reserved.
机译:磨碎的高炉矿渣粉煤灰(GGBS-PFA)三元混合水泥混凝土通常用于建筑中,以减少混凝土材料的碳足迹。然而,仍很少探讨聚羧酸盐(PCE)聚合物(用于混凝土生产的第三代超级增塑剂)与这种混凝土之间的相互作用。为了使PCE在三元混合混凝土生产中发挥有效和最佳的性能,主要和侧链分子结构是主要考虑因素。因此,本研究旨在得出具有各种主链和侧链密度的PCE聚合物对GGBS-PFA三元混合水泥混凝土的工程性能和微观结构发展的影响。该研究中进行的实验室测试包括流道测试,抗弯强度,抗压强度和超声脉冲速度(UPV)。此外,确定了热重分析(TGA)和微观结构评估,以进行热分解分析和水合动力学评估。观察到,PCE(1:1),PCE(1:2),PCE(1:4)和PCE(1:8)可以有效地降低GGBS-PFA三元混合水泥混凝土的水结合比,分别。此外,具有PCE(1:8)的GGBS-PFA三元混合水泥混凝土可提供最佳的机械强度性能。 (C)2020 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Construction and Building Materials》 |2020年第may10期|118103.1-118103.17|共17页
  • 作者

  • 作者单位

    Univ Sains Malaysia Sch Housing Bldg & Planning George Town 11800 Malaysia;

    Univ Sains Malaysia Sch Chem Sci George Town 11800 Malaysia;

    Macro Dimens Concrete Sdn Bhd Sungai Petani 08000 Kedah Malaysia;

  • 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 eng
  • 中图分类
  • 关键词

    GGBS; PFA; Polycarboxylate polymer; Chain densities; Mechanical strength; Microstructure;

    机译:GGBS;PFA;聚羧酸盐聚合物;链密度;机械强度;微观结构;

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