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

Quimica nova

Morelli, Márcio Raymundo¹  Ribeiro, Daniel Véras¹  Yuan, Shih Yung¹ 

[1] Universidade Federal de São Carlos, São Carlos, Brasil

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 leatherwas subjected to chemical treatment in an attempt to immobilize chromium ionin a matrix of cement. Cementitious pastes were obtained by adding differentproportions 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 leatherinfluence in Portland cement pastes, the phases formation were observed by X-raydiffraction (XRD). The results showed that the pretreatment was effective forthe waste dissolution and the pH of treated waste chemical solutions did notinfluence significantly the characteristics of cement paste, with a slight increasein setting time results.

【 授权许可】

CC BY