| 轻烧氧化镁用于防治水泥稳定碎石基层裂缝的合理剂量研究 |
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| 引用本文： | 陈德健,冯卫星,马敬坤.轻烧氧化镁用于防治水泥稳定碎石基层裂缝的合理剂量研究[J].国防交通工程与技术,2008,6(6):21-24. |
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| 作者姓名： | 陈德健 冯卫星 马敬坤 |
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| 作者单位： | 1. 石家庄铁道学院土木工程分院,河北,石家庄,050043
2. 河北交通职业技术学院院长办公室,河北,石家庄,050091 |
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| 摘 要： | 针对水泥稳定碎石基层的收缩裂缝问题，提出应用轻烧氧化镁的膨胀性来抵消水泥收缩裂缝的办法。通过水泥砂浆延期压蒸试验和限制膨胀率试验研究确定了以轻烧氧化镁作为膨胀剂的合理掺量。经过反复试验，得出氧化镁的掺量应小于水泥含量的5％，最终确定对于某试验路工程氧化镁的掺量为4．4％。
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| 关 键 词： | 轻烧氧化镁 水泥稳定碎石 基层 收缩裂缝 |
A Study of the Rational Amount of Light-burned Magnesia for Preventing and Curing Cracks in Cement-Stabilized Macadam |
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| Chen Dejian,Feng Weixing,Ma Jingkun.A Study of the Rational Amount of Light-burned Magnesia for Preventing and Curing Cracks in Cement-Stabilized Macadam[J].Traffic Engineering and Technology for National Defence,2008,6(6):21-24. |
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| Authors: | Chen Dejian Feng Weixing Ma Jingkun |
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| Institution: | Chen Dejian,Feng Weixing,Ma Jingkun (1.Civil Engineering School of Shijiazhuang Railway Institute,Shijiazhuang 050043,2.Dean\'s Office of Hebei Traffic Vocational Technology Institute,Shijiazhuang 050091) |
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| Abstract: | Aiming at solving the problem of shrinking cracks in cement-stabilized macadam,the suggestion that the expansion of light-burned magnesia be made use of to offset cement shrinking cracks is put forward in the paper.Through the extension of the pressurizing-steaming test of cement mortar and the test of restricting the expanding rate,the rational amount of light-burned magnesia as an expansion agent is determined.After being tested time and again,it has been determined that the rational amount of light-burne... |
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| Keywords: | light-burned magnesia cement-stabilized macadam shrinking crack |
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