A proposal for the maximum use of recycled concrete sand in masonry mortar design

被引：44

作者：

Fernandez-Ledesma, E. ^{[1
]}

Jimenez, J. R. ^{[1
]}

Ayuso, J. ^{[1
]}

Corinaldesi, V. ^{[2
]}

Iglesias-Godino, F. J. ^{[3
]}

机构：

[1] Univ Cordoba, Construct Engn Area, Cordoba, Spain

[2] Univ Politecn Marche, Dept Mat & Environm Engn & Phys, Ancona, Italy

[3] Univ Jaen, Dept Chem Environm & Mat Engn, Jaen, Spain

来源：

MATERIALES DE CONSTRUCCION | 2016年 / 66卷 / 321期

关键词：

Mortar; Compressive Strength; Mechanical Properties; Retraction; Waste Treatment; DEMOLITION WASTE; COMPRESSIVE STRENGTH; AGGREGATE; CONSTRUCTION; PERFORMANCE; CDW; BEHAVIOR; ENERGY;

D O I：

10.3989/mc.2016.08414

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Natural sand mining from rivers and seashores is causing serious environmental problems in many parts of the world, whereas the fine fraction from recycling concrete waste is underutilized as a construction material. The aim of this paper is to determine the maximum replacement level of natural sand by recycled sand in the manufacturing of masonry mortar (M-10). For this purpose, five replacement levels were tested: 0%, 25%, 50%, 75% and 100% by volume. The mixes were made using cement CEM II/BL 32.5 N in a volumetric proportion of cement-to-aggregate of 1:5. A commercial admixture was used at a constant content. The amount of water was variable to achieve a consistency of 175 +/- 10 mm. The short-and long-term mortar properties were evaluated. The data were analyzed using a one-way ANOVA. In conclusion, a maximum percentage of 50% recycled concrete sand can be used in an indoor environment.

引用

页数：15

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