| 摘要: |
| 试验研究了不同强度等级的石灰岩骨料混凝土的抗压强度、弹性模量随龄期发展规律，并与砂岩骨料混凝土进行了比较.通过数值模拟，建立了石灰岩骨料混凝土的抗压强度、弹性模量与龄期之间的相互关系模型.结果表明：不同强度等级的石灰岩骨料混凝土弹性模量发展比抗压强度快，且比砂岩骨料混凝土高；不同强度等级、不同岩性骨料混凝土的弹性模量与抗压强度平方根均呈线性关系，随强度等级的增大，石灰岩骨料混凝土弹性模量增长减缓，砂岩骨料混凝土则与之相反. |
| 关键词: 石灰岩 砂岩 骨料 抗压强度 弹性模量 相关性 |
| DOI：103969/j.issn1007 9629201404016 |
| 分类号: |
| 基金项目:国家重点基础研究发展计划（973计划）项目（2011CB013805）；国家自然科学基金资助项目（51278360,51308407）；“十二五”国家科技支撑计划项目（2014BAL03B02）；高等学校博士学科点专项科研基金项目（20130072110047）；中央高校基本科研业务费专项资金资助 |
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| Study on the Correlation between Elastic Modulus and Strength of Concrete Made with Limestone Aggregate |
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JIANG Zhengwu, ZHOU Lei, LI Wenting
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Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University, Shanghai 201804, China
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| Abstract: |
| Development rule of compressive strength and elastic modulus of different strength grades limestone aggregate concrete was investigated and compared with sandstone aggregate concrete. The relationship among compressive strength, elastic modulus and age of limestone aggregate concrete was established through numerical simulation. The results show that the elastic modulus of different strength grades limestone aggregate concrete grows more quickly than its compressive strength and is higher than that of sandstone aggregate concrete. The relationship between the elastic modulus and the square root of compressive strength of concrete with different lithological aggregates and strength grades is linear. With the increase of strength grade of concrete, the limestone aggregate concretes elastic modulus growth slows down and is contrary to the sandstone aggregate concrete. |
| Key words: limestone sandstone aggregate compressive strength elastic modulus correlation |
