Methodologies to Improve the Mechanical Properties of Structural Concrete with Recycled Aggregates

Ingeniería y Ciencia

Letelier, Viviana¹  Moricomi, Giacomo²  Valdés, Gonzalo¹  Osses, Rodrigo¹ 

[1] Universidad de La Frontera, Temuco, Chile;Universidad Politécnica delle Marche, Ancona, Italia

关键词: recycled aggregates;    recycled aggregate concrete;    mechanical properties;   

DOI  :  

学科分类：工程和技术（综合）

来源: Universidad E A F I T

【 摘 要 】

This paper presents the analysis of results about two methodologies proposed to reduce the differences of mechanical properties presented in recycled concrete made with high percentages of recycled aggregate in respect to a control concrete. Two methodologies were applied to structural concrete with a 40% of recycled aggregates and the results were compared with a control concrete. The first method consisted in increase the amount of cement added in the manufacture of recycled concrete from 2.5% to 10%. The second method consisted of applying an abrasion to the recycled aggregates to decrease the amount of mortar adhered. This method has allowed evaluating the behavior of concrete manufactured with recycled aggregates with different degrees of abrasion. The results show that long-term mechanical properties of the concrete manufactured with both methodologies are similar to control concrete.

【 授权许可】

Unknown