谢一飞1,楼浙湘2,田 寅1
铸造废砂对混凝土强度的影响
谢一飞1,楼浙湘2,田 寅1
摘 要:使用未处理和处理后的铸造废砂取代天然砂制备混凝土,并对混凝土的性能作了对比分析。结果表明,与基准混凝土相比,用未处理的废砂取代天然砂时,随着取代率的提高,混凝土的流动性变差,抗压强度也随之降低;处理后的废砂与未处理废砂对混凝土性能的影响趋势一致,抗压强度有所提高,当仅取代天然砂中的细砂时,对混凝土的抗压强度几乎没影响。
Abstract: The green concretes are prepared by using untreated and treated waste foundry sand to partially substitute the natural sands, and the performances of the two kinds of concretes were compared and analyzed. The test results show that comparing with the reference concrete, the liquidity and compressive strength of the concrete with untreated waste foundry sand decrease with the creasing the content of the waste foundry sand; the effect tendency of treated waste foundry sand on the performances of concrete are consistent with those of untreated waste foundry sand, and the performances have a certain improvement. When using all the treated waste foundry sand to replace the fine sand in natural sand, it’s found that treated waste foundry sand has hardly effect on the compressive strength of the concrete.
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