• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Proceedings of the Fifty-Third annual conference of the Canadian Technical Asphalt Association(CTAA) >Fine Aggregate Water Absorption and Density Testing(ASTM C 128 and AASHTO T 84) – Effect of Fines on Results
【24h】

Fine Aggregate Water Absorption and Density Testing(ASTM C 128 and AASHTO T 84) – Effect of Fines on Results

机译：细集料的总吸水率和密度测试（ASTM C 128和AASHTO T 84）–细粉对结果的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It has been found that there may be significant differences in bulk relative density when fine aggregate isrntested with the fines (minus 75 μm) removed by washing as compared to testing when the fines arernpresent. These differences in density can be large and can result in errors in calculating concrete andrnasphalt mixture characteristics. A study was conducted to investigate the effect of fines on fine aggregaternabsorption and bulk relative density and, if possible, determine the cause of any difference. It was foundrnthat the amount of the difference depends on the amount of the fines present and probably on the nature ofrnthe fines. The high absorption and low bulk relative density values are caused by the fines promoting thernformation of agglomerations of artificial aggregate particles as the sample is being stirred during thernachievement of the saturated surface dry condition. These artificial aggregate particles have porosity inrnand of themselves and reach a saturated surface dry condition. The porosity (absorption) and bulk relativerndensity measured is a combination of not only the individual grains in the fine aggregate but also of thernartificial particles. Testing fine aggregates with high fines present may often result in incorrect density andrnabsorption values.
机译：已经发现，当测试细骨料并且通过洗涤除去细粉（负75μm）时，与相对于细粉存在时的测试相比，堆积相对密度可能存在显着差异。这些密度差异可能很大，并且可能导致计算混凝土和沥青混合料特性时出现错误。进行了一项研究，以研究细粉对细骨料吸收和堆积相对密度的影响，并在可能的情况下确定产生差异的原因。已经发现，差异的量取决于所存在的罚款的数量，并且可能取决于罚款的性质。高吸收和低堆积相对密度值是由细粉引起的，这些细粉在达到饱和表面干燥条件的过程中搅拌样品时会促进人造骨料颗粒的团聚形成。这些人造骨料颗粒本身具有孔隙率，并达到饱和的表面干燥条件。所测量的孔隙率（吸收率）和堆积相对密度不仅是细骨料中单个晶粒的组合，而且是人造颗粒的组合。用高细粉测试细骨料通常会导致密度和吸收值不正确。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号