Development of precast geopolymer concrete via oven and microwave radiation curing with an environmental assessment

被引：74

作者：

Kastiukas, Gediminas ^{[1
]}

Ruan, Shaoqin ^{[1
]}

Liang, Shuang ^{[1
]}

Zhou, Xiangming ^{[1
]}

机构：

[1] Brunel Univ London, Dept Civil & Environm Engn, Uxbridge UB8 3PH, Middx, England

来源：

JOURNAL OF CLEANER PRODUCTION | 2020年 / 255卷

基金：

欧盟地平线“2020”;

关键词：

Geopolymer; Oven curing; Microwave radiation; Mechanical performance; Environmental assessment; LIFE-CYCLE ASSESSMENT; GREENHOUSE-GAS EMISSIONS; PORTLAND-CEMENT CONCRETE; RICE HUSK ASH; FLY-ASH; MECHANICAL-PROPERTIES; DRYING SHRINKAGE; REACTIVE MGO; STRENGTH; PASTE;

D O I：

10.1016/j.jclepro.2020.120290

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Geopolymer is identified as a type of promising alternative binder to Portland cement due to its sustainability and excellent properties. This paper investigated the influence of two types of curing regimes (i.e. oven and microwave radiation curing) on the compressive strengths of geopolymer samples, facilitated by scanning electron microscope analysis, which was adopted in the interpretation of strength results. Besides, a comparative life cycle assessment based on Europe was conducted between geopolymer and Portland cement samples with details. Results indicate that it took less time to prepare precast geopolymer concrete with desired strengths using microwave radiation than oven curing. Meanwhile, the source of PFA would greatly influence the strength development of geopolymer samples. Finally, the preparations of geopolymer samples presents lower environmental burdens and CO2 emissions than Portland cement samples, however, the quality and availability of PFA and GGBS in UK led to a re-evaluation of the environmental impacts and strengths of the precast geopolymer concrete in the near future. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

共 56 条

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