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首页> 外文会议>International Conference on Civil Engineering, Architecture and Sustainable Infrastructure >Relations of Compressive Strength at 7d and 28d for Fly Ash Concrete with Machine-made Sand
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Relations of Compressive Strength at 7d and 28d for Fly Ash Concrete with Machine-made Sand

机译：用机制沙子粉煤灰混凝土压缩强度与28D的抗压强度关系

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Although the fly ash concrete with machine-made sand (MSFAC) was widely used in recent years in China, it was lack of studies on relations of compressive strength at different ages. According to the specification of Chinese standard, there are three ways of admixing fly ash (FA) into concrete, i.e. the additional admixing, the equal-mass replacing cement and the over-mass replacing cement. In this paper, 56 groups test data with additional admixing FA, 98 groups test data with equal-mass replacing cement and 86 groups test data with over-mass replacing cement for MSFAC are summarized from published references. Three linear formulas and Slatter formulas are fitted and compared for MSFAC by the different methods of admixing FA, all of them have good fitness with test data. The compressive strength at 28d can be predicted by the compressive strength at 7d with linear formula and Slatter formula for MSFAC.
机译：虽然近年来，粉煤灰混凝土近年来广泛使用，但缺乏对不同年龄段压缩力量关系的研究。根据中国标准的规格，将粉煤灰（FA）与混凝土混合有三种方法，即另外混合，相等的替代水泥和过度替代水泥。在本文中，56组测试数据具有额外的混合FA，98组测试数据具有相等质量的替代水泥和86个组测试数据，并从发布的参考文献总结了MSFAC的超额替代水泥。使用三种线性公式和砂浆，并通过混合FA的不同方法对MSFAC进行比较，所有这些都具有良好的健身与测试数据。通过具有线性配方和MSFAC的线性配方和砂浆的抗压强度，可以预测28d处的抗压强度。

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