Effect of chemically treated shave leather addition on the characteristics of Portland cement pastes

Química Nova

Morelli, Márcio Raymundo¹  Universidade Federal de São Carlos, São Carlos, Brasil¹  Ribeiro, Daniel Véras¹  Yuan, Shih Yung¹ 

关键词: shave leather;    Portland cement;    inertization.;   

DOI  :  10.1590/S0100-40422011000600012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The sheave leather was subjected to chemical treatment in an attempt to immobilize chromium ion in a matrix of cement. Cementitious pastes were obtained by adding different proportions of waste treated solutions (5 and 10% compared to the cement mass) and the pH and setting time (hardening) were measured. Aiming to check the leather influence in Portland cement pastes, the phases formation were observed by X-ray diffraction (XRD). The results showed that the pretreatment was effective for the waste dissolution and the pH of treated waste chemical solutions did not influence significantly the characteristics of cement paste, with a slight increase in setting time results.

【 授权许可】

Unknown