水泥粉煤灰稳定碎石力学参数影响因素研究
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Study on influence factors of mechanical parameters of cement fly ash stabilized
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    摘要:

    采用水泥粉煤灰作为无机结合料稳定天然碎石,研究水泥剂量、粉煤灰剂量及养护龄期对无侧限抗压强 度、劈裂强度及回弹模量等力学参数的影响。试验结果表明:无侧限抗压强度、劈裂强度及回弹模量随着水泥剂 量的提高均呈现线性增长的趋势;无侧限抗压强度和劈裂强度随着粉煤灰剂量的提高均呈现先增长后减小的趋 势,并在 9%粉煤灰剂量时达到峰值,回弹模量随着粉煤灰剂量的提高呈线性减小的趋势;28 和 60 d 的无侧限抗 压强度较 7 d 的分别增长约 30%和 60%,28 和 60 d 的劈裂强度较 7 d 的分别增长约 50%和 70%,28 和 60 d 的回 弹模量较 7 d 的分别增长约 65%和 120%。

    Abstract:

    Cement fly ash was used as inorganic binder to stabilize natural crushed stone. The effects of cement dosage, fly ash dosage and curing age on unconfined compressive strength, splitting strength and resilience modulus were studied. The results show that the unconfined compressive strength, splitting strength and resilience modulus increase linearly with the increase of cement dosage. The unconfined compressive strength and splitting strength increase first and then decrease with the increase of fly ash dosage, and reach the peak at 9% of fly ash dosage, and the modulus of resilience decreases with the increase of fly ash dosage. With the increase of curing age, the unconfined compressive strength of 28 and 60 d are increased by about 30% and 60%, the splitting strength of 28 and 60 d are increased by about 50% and 70%, and the resilience modulus of 28 and 60 d increased by about 65% and 120%, respectively compared with 7 d.

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刘新海 ,彭小林 .水泥粉煤灰稳定碎石力学参数影响因素研究[J].交通科学与工程,2020,36(1):38-43.
LIU Xin-hai, PENG Xiao-lin. Study on influence factors of mechanical parameters of cement fly ash stabilized[J]. Journal of Transport Science and Engineering,2020,36(1):38-43.

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  • 在线发布日期: 2022-06-09
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