Mineralogical characterization of an Acre soil in order to produce calcined clay aggregates for pavements

Materia

Barbosa, Victor Hugo Rodrigues¹  Marques, Maria Esther Soares² 

[1] 7º Batalhão de Engenharia de Construção, Rio Branco, Brasil;Instituto Militar de Engenharia, Rio de Janeiro, Brasil

关键词: calcined clay;    X-ray diffraction;    clay minerals;    paving;    Acre.;   

DOI  :  10.1590/s1517-707620180003.0515

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

This paper presents the experimental results of the evaluation of the mineralogical features of a soil from the Southwest of the Brazilian Amazon used to produce calcined aggregates for road pavements. The identification of clay minerals by X-Ray Diffraction technique is more efficient when preceded by preliminary sample treatments involving sedimentation, iron removal and preparation of microscope slides under glycol-saturated and heated conditions. The results show that the soil presents mineralogical features suitable for the production of calcined aggregates with acceptable mechanical behavior for the proposed use; they also show that the preliminary classification involving physical indexes are not always sufficient to verify the suitability of the soils.

【 授权许可】

CC BY