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珍珠岩混凝土基本力学性能试验分析

来源：花匠小妙招时间：2025-04-25 00:28

摘要: 选用20~30目珍珠岩矿砂和20~30目膨胀珍珠岩作为混凝土的细骨料，替代一定量的砂子，采用微观角度和宏观角度相结合的方法研究了珍珠岩种类和替代率对混凝土基本力学性能的影响.试验结果表明：将表面圆润的20~30目膨胀珍珠岩掺入混凝土中，膨胀珍珠岩混凝土的保水性比珍珠岩矿砂混凝土更好.膨胀珍珠岩混凝土（20%替代率）的水化反应温差峰值跟基准混凝土的基本一致，达到峰值的时间提前.通过试验综合分析发现，选取20~30目膨胀珍珠岩，替代率为20%左右时，珍珠岩混凝土的基本力学性能最为优异.

Abstract: The 20~30 mesh perlite ore and the 20~30 mesh expanded perlite were selected to replace a certain amount of sand as the concrete fine aggregate, the influence of perlite state and substitution rate on the basic mechanical properties of concrete were studied by means of microcosmic and macroscopic angles. The experimental results showed that the water retention performance of expanded perlite concrete was stronger than that of perlite ore. The peak value of the hydration reaction temperature of expanded perlite concrete (20% substitution rate) was basically the same as that of the reference concrete, and the peak time was ahead of. It was found that the basic mechanical properties of perlite concrete were the best when 20~30 mesh expanded perlite was selected and the blending ratio was about 20%.

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