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论文针对粉煤灰掺量一定的情况下,研究石灰石粉硅粉复掺对混凝土的抗压强度和抗冻耐久性能的影响。试验结果表明,在石灰石粉掺量为5%~10%时,混凝土强度比基准高。随着石灰石粉掺量的增加,混凝土的抗压强度降低。且随着混凝土的龄期增加,混凝土28 d和56 d抗压强度几乎不变。在混凝土冻融循环次数一定时,在粉煤灰掺量为5%和硅粉掺量为10%时,在石灰石粉掺量为5%~10%时,混凝土的抗冻性能较好,且高于基准混凝土。
In this paper, a certain amount of fly ash in the case of mixed limestone powder to study the impact of concrete compressive strength and anti-freeze durability. The test results show that when the content of limestone powder is 5% ~ 10%, the concrete strength is higher than the benchmark. With the limestone powder content increases, the compressive strength of concrete decreases. With the increase of concrete age, the compressive strength of concrete at 28 d and 56 d is almost unchanged. When the concrete freeze-thaw cycle number is certain, when the content of fly ash is 5% and the content of silicon powder is 10%, the frost resistance of concrete is better when the content of limestone powder is 5% -10% And higher than the benchmark concrete.