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花岗岩石粉对砼早期抗裂性能的影响

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摘要 通过测试砼流动度、抗压强度、蒸发失水速率、早期抗裂性能等,研究花岗岩石粉作为矿物掺合料取代水泥时对砼工作性能、力学性能及抗裂性能的影响.结果表明,与基准砼相比,花岗岩石粉的掺入可降低砼蒸发失水量,其掺量为10%、20%和30%时砼的早期开裂面积分别减少76.8%、45.9%、30.5%,砼早期抗裂性能提高;花岗岩石粉可提高砼流动度,其掺量为10%时砼3d强度有所提高,掺花岗岩石粉砼的后期强度比基准砼有所降低.
作者 黎超尘
出处 《公路与汽运》 2019年第6期81-82,87,共3页 Highways & Automotive Applications
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