| 摘要: |
| 测试了硅质石灰岩、石灰岩、玄武岩和辉绿岩4种岩石粗集料的维氏硬度、洛杉矶磨耗值和磨光值.依照渐近指数函数形式建立了基于维氏硬度的粗集料磨光值衰减模型.结果表明：粗集料洛杉矶磨耗值、磨光稳定终值与粗集料维氏硬度相关性良好；粗集料磨光值衰减速率与粗集料硬度、矿物颗粒间硬度差异有关，粗集料磨光稳定终值则取决于粗集料维氏硬度. |
| 关键词: 粗集料 维氏硬度 磨耗值 磨光值 衰减模型 |
| DOI：103969/j.issn1007 9629201402028 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（50908175）；中央高校基本科研业务费专项资金资助项目 |
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| Attenuation Model of Polishing Value of Coarse AggregateBased on Vickers Hardness |
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CONG Lin1, BIAN Shaohui1, TAN Le2
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1.Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University,Shanghai 201804, China;2.Highway Administration in Huzhou, Huzhou 313000, China
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| Abstract: |
| Four kinds of aggregates, including cherty limestone, limestone, basalt and diabase, had been used to measure Vickers hardness, Los Angeles abrasion value and polishing value. The attenuation model of polishing value of coarse aggregate based on Vickers hardness was established according to asymptotic exponential function. The experiment results show that Los Angeles abrasion value, final polishing value of coarse aggregate have good correlations with Vickers hardness. Attenuation rate of polishing value of coarse aggregate is affected both by coarse aggregate hardness and the hardness difference among its mineral composition. The final polishing value of coarse aggregate depends on the Vickers hardness. |
| Key words: coarse aggregate Vickers hardness abrasion value polishing value attenuation model |
