Durability of recycled aggregates concrete: a safe way to sustainable development
Durability of recycled aggregates concrete: a safe way to sustainable development
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DOI：
10.1016/j.cemconres.2004.02.009
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发表时间：
2004-11-01
影响因子：
11.4
通讯作者：
Helene, P
中科院分区：
文献类型：
--
作者：
Levy, SM;Helene, P
从拆除的砖石和混凝土结构中回收的细骨料和粗骨料被用于制造新的混凝土混合物。分析了这些新型混凝土的三个性能：吸水率、总孔隙体积和碳酸化。再生混凝土家庭是通过用0%、20%、50%和100%的再生资源骨料取代部分形成混凝土家庭的天然骨料而创建的。通常通过比较混凝土族的性能来比较混合料。该研究表明，配合比设计图（NMN）是一种新的、有用的工具，可以让研究人员比较不同混凝土的性能和行为。结果表明：孔隙体积最大、抗压强度分别为20、30和40 MPa（2900、4350和5800 psi）的混凝土族并不总是与碳化程度最高的混凝土族相对应。该试验还表明，混凝土的某些组成特性比传统的物理方面对耐久性的影响更大。(C) 2004 Elsevier Ltd.版权所有。
Fine and coarse recycled aggregates recovered from demolished masonry and concrete structures were utilized in the manufacture of new concrete mixtures. Three properties of these new concretes were analyzed: water absorption, total pores volume, and carbonation. The recycled concrete families were created by replacing parts of the natural aggregates forming families of concrete with 0%, 20%, 50%, and 100% of aggregates from recycled sources. The usual comparison between mixtures by comparison between behaviors of concrete families. This research shows that the mix design nomogram (NMN) is a new and useful tool that allows the researchers to compare properties and behaviors of different concretes. The results show that the family concrete with the highest pore volume and with the same compressive strength of 20, 30, and 40 MPa (2900, 4350, and 5800 psi) did not always correspond to the concrete family with the highest degree of carbonation. This experiment also showed that some compositional characteristics of concrete could have more influence on the durability that the traditional physical aspects. (C) 2004 Elsevier Ltd. All rights reserved.