Relationship Between Gas Adsorption and the Shrinkage and Creep of Recycled Aggregate Concrete
Relationship Between Gas Adsorption and the Shrinkage and Creep of Recycled Aggregate Concrete
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DOI：
10.1520/cca10442j
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发表时间：
2003-12
期刊：
影响因子：
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通讯作者：
J. M. Gómez-Soberón
中科院分区：
文献类型：
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作者：
J. M. Gómez-Soberón
在这项工作中，再生混凝土（RC）与天然骨料与再生骨料来源于混凝土（RCA）的替代标本的实验分析。进行了试验分析，以获得混凝土的收缩和徐变性能（基本和干燥）。RCA对天然聚集体的置换分数为0%、15%、30%、60%和100%，测试条件为50%RH和20 °C。在90天时，将这些试验的结果与压汞孔隙率法（MIP）和气体吸附（氮气）试验进行比较。在结果中，相对于常规混凝土的RC的收缩和徐变性能的增加被观察到，而孔隙率值增加。然而，变形随时间的演变是类似于传统的混凝土。
In this work, an experimental analysis is described of specimens of recycled concrete (RC) made with replacement of natural aggregate with recycled aggregate originating from concrete (RCA). An experimental analysis to obtain the shrinkage and creep properties (basic and by drying) of RC was performed. The replacement fraction of natural aggregate with RCA were 0 %, 15 %, 30 %, 60 % and 100 % and the test conditions were 50 % RH and 20 °C. The results of these trials were compared with mercury intrusion porosimetry (MIP) and gas adsorption (nitrogen) tests, at 90 days. In the results, an increase in the shrinkage and creep properties of the RC with respect to conventional concrete was observed, while porosity values increased. However, the deformation evolution over time is similar to conventional concrete.