粉煤灰和矿粉掺入比例对预拌混凝土成本的影响

2021-07-11 12:14:35李雪英
粘接 2021年4期

李雪英

摘 要:如今在混凝土中的生产制造中,适当的掺入一定比例的矿粉以及粉煤灰已经很常见,其首要的目的就是可以优化混凝土的各项性能指标,其次这种双掺技术还可以大大地节约混凝土的生产制造成本。于是掺量的具体数值如何确定才能同时满足提高性能和降低成本的要求,这就成为了设计制造中的研究方向但。经过笔者的大量研究以及分析,再加上基于正交试验的结果分析,在本文中展示了笔者建立了双掺粉煤灰和矿粉的数学模型,这样就能为成本的控制提供量化的依据。

关键词:矿粉;粉煤灰;双掺;混凝土性能;正交试验

中图分类号:TU528 文献标识码:A 文章编号:1001-5922(2021)04-0115-05

Abstract:Nowadays, in the production and manufacturing of concrete, it is very common to appropriately mix certain proportion of mineral powder and fly ash. Its primary purpose is to optimize the performance indexes of concrete. Secondly, this double-mixing technology can greatly save the production and manufacturing cost of concrete. Therefore, how to determine the specific value of admixture to meet the requirements of improving performance and reducing cost at the same time, which has become the research direction in design and manufacturing. After a lot of research and analysis by the author, coupled with the result analysis based on the orthogonal experiment, this paper shows that the author has established a mathematical model of double fly ash and mineral powder, which can provide a quantitative basis for the cost control.

Key words:mineral powder; fly ash; double mixing; concrete performance; orthogonal test

0 引言

現如今,在绝大多数的建筑行业中,在混凝土的设计制造中运用粉煤灰以及矿粉的双掺技术已经是众所周知,其目的首先是为了优化混凝土的各项指标性能这,其次就是可以节约成本。具体点来说,我们发现不仅要检验混凝土的强度与其胶水比之间的关系外,还需要进一步考虑粉煤灰和矿粉的掺入量在混凝土强度中的线性关系,研究这两点的出发点就是基于胶水比与混凝土强度存在着一定的函数表达式。基于此,为了实现,若混凝土的各种原材料的价格起伏不定时,如何调整各原材料的投入比例以实现成本节约的最大化,从而使其受市场波动的影响较小,文章讨论并且设计了基于三因子三水平[1]的正交试验的数学模型并且展开了研究以及分析。……

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