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首页> 外文期刊>Canadian Journal of Civil Engineering >Effect of mix composition on workability and compressive strength of self-compacting geopolymer concrete
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Effect of mix composition on workability and compressive strength of self-compacting geopolymer concrete

机译：混合料组成对自密实地基聚合物混凝土的可加工性和抗压强度的影响。

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摘要

Concrete performance expectation has risen to satisfy the ever increasing societal needs alongside with the ad-vancement of technology. Self-compacting geopolymer concrete (SCGC) is an improved way of concreting execution that does not need compaction and it is made by complete elimination of ordinary Portland cement content. This paper reports results of an experimental study on workability and development of compressive strength of SCGC prepared by thermal re-action of low calcium fly ash with sodium hydroxide, sodium silicate and super plasticizer. The effects of water to geopoly-mer solids on fresh properties such as filling ability, passing ability and resistance to segregation were studied. The fresh properties were assessed using slump flow, V-funnel, L-box and J-ring test methods. The basic requirements for flowability and resistance to segregation for self compacting according to European Federation of National Associations Representing Producers and Applicators of Specialist Building Products for Concrete (EFNARC) were satisfied. This paper also reports the effects of curing duration and temperature on the compressive strength development. The compressive strength of 51 MPa was obtained for self compacting geopolymer concrete cured at 70 ℃ for 48 h with water to geopolymer solids ratio of 0.33.
机译：随着技术的进步，人们对具体性能的期望已经提高，可以满足日益增长的社会需求。自密实地质聚合物混凝土（SCGC）是一种无需压实的混凝土浇筑改进方法，它是通过完全消除普通波特兰水泥的含量而制成的。本文报道了通过低钙粉煤灰与氢氧化钠，硅酸钠和高效增塑剂的热反应制备的SCGC的可加工性和抗压强度发展的实验研究结果。研究了水对地聚合物的固体对新鲜特性如填充能力，通过能力和抗偏析性的影响。使用坍落度流，V型漏斗，L形盒和J型环测试方法评估了新鲜特性。根据代表混凝土专业建筑产品的生产者和施用者的欧洲国家协会联合会（EFNARC）的要求，满足了流动性和抗偏析性的基本要求。本文还报告了固化时间和温度对抗压强度发展的影响。在70℃下固化的水土聚合物固比为0.33的自密实土聚合物混凝土，抗压强度为51 MPa。

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