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| 二灰碎石基层材料配合比优化试验研究 |
| An Experimental Research on the Optimum Mix Proportion of the Subbase Material Mixed with Lime,Fly-ash and Broken Stones |
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| DOI：10.3969/j.issn.1671-5322.2004.04.002 |
| 中文关键词: 二灰碎石基层 配合比 优化 试验研究 |
| 英文关键词: Lime, fly-ash and broken stone mix proportion optimization experimental research |
| 基金项目: |
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| 中文摘要: |
| 二灰碎石已广泛应用于高等级公路工程的基层,但在实际应用中,二灰用量过多容易产生温缩和干缩裂缝,而二灰用量过少又会造成强度不足,这与混合料的配合比及级配密切相关.因此,如何确定最优配合比和级配是重要的实际问题.南京新机场跑道工程的二灰碎石基层在实施前进行了对比试验,得出了具有借鉴价值的优化配合比.实践还证明,集料的粗颗粒含量可以适当超出公路规范级配的限定. |
| 英文摘要: |
| The subbase material mixed with lime, fly-ash and broken stones has been widely used in the highway engineering. It is important to determine the optimum mix proportion and grading of the material. A field test was made before the construction of the runway project of Nanjing International Airport. This paper is a report of obtained results in this experiment. |
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