| 水泥粉煤灰稳定碎石强度增长特性 |
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| 引用本文： | 徐鸥明,韩森,孙薇. 水泥粉煤灰稳定碎石强度增长特性[J]. 广西大学学报(自然科学版), 2009, 34(4) |
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| 作者姓名： | 徐鸥明 韩森 孙薇 |
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| 作者单位： | 长安大学材料科学与工程学院,陕西,西安,710061;长安大学特殊地区公路工程教育部重点实验室,陕西,西安,710064;北京中交建设工程招标有限公司,北京,100029 |
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| 基金项目： | 国家西部交通科技项目，陕西省交通科技项目 |
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| 摘 要： | 为了评价水泥粉煤灰稳定碎石强度增长特性,通过不同龄期无侧限抗压强度试验和劈裂试验,研究了不同粉煤灰掺量下水泥粉煤灰稳定碎石强度变化情况.结果表明:粉煤灰的掺入,对水泥稳定碎石早期抗压强度和劈裂强度都有影响,掺量越大早期强度越低;掺加粉煤灰对长期强度有利,就提高长期强度而言,粉煤灰最佳掺量约为10%;由于7d抗压强度不足以反映掺粉煤灰的水泥稳定碎石强度特性.建议采用7～90 d强度增长率作为评价其强度潜能,在实际工程中应适当降低其7 d强度要求.
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| 关 键 词： | 道路工程 水泥稳定碎石 粉煤灰 |
Strength growth characteristics of cement and fly-ash stabilized crushed-stones |
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| XU Ou-ming,HAN Sen,SUN Wei. Strength growth characteristics of cement and fly-ash stabilized crushed-stones[J]. Journal of Guangxi University(Natural Science Edition), 2009, 34(4) |
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| Authors: | XU Ou-ming HAN Sen SUN Wei |
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| Affiliation: | XU Ou-ming1,HAN Sen2,SUN Wei3 |
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| Abstract: | In order to evaluate the strength growth characteristics of cement and fly-ash stabilized crushed stones,the strength variety of different fly-ash mixing proportion is studied by unconfined compressive strength test and splitting test for different ages.The results show that incorporation of fly-ash would reduce the compressive strength and splitting strength of cement-stabilized crushed stones in early stage.And the greater the incorporation,the lower the early strength is.Mixing with fly-ash would benefit... |
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| Keywords: | road engineering cement stabilized crushed stones fly-ash |
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