Effect of type cement on the mechanical strength of copper slag mortars

Rem: Revista Escola de Minas

Amin Nazer²  Osvaldo Pavez¹  Ithamar Toledo¹ 

[1] ,Universidad de Atacama Instituto Tecnológico ,Chile

关键词: Copper slag;    mortar;    compression strength;    flexural strength;    construction;    Escória de cobre;    argamassa;    resistência à compressão;    resistência à flexão;    construção;   

DOI  :  10.1590/S0370-44672013000100011

来源: SciELO

【 摘 要 】

Copper slag is a massive metallurgist waste. Annual production rises up to 24.6 million tons, approximately, and the main environmental impact derived from slag disposal is the usage of great soil extensions and the resulting visual contamination of the landscape. Along time, copper slag has been used in the manufacture of concrete and cement mortars. Thus, with the aim of verifying binder-type influence in the final hardness of mortars, two types of cement were used: regular cement and high initial resistance cement. Copper slag was characterized from the chemical, mineralogical and grading viewpoints. Official Chilean regulations were used in the applied methodology for the determination of some important slag parameters. Compression and flexural strength trials were carried out on cement mortars in specialized laboratories. The obtained results showed that mortars manufactured with copper slag presented a better resistance to compression and flexural strength than mortars manufactured with normal sand, and those made with high initial resistance cement were even better. It can be concluded from this work that copper slag offers optimal mechanical characteristics to be used in the manufacturing of cement mortars, becoming a sustainable and adequate alternative material for usage in the construction industry.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License