Estudo Experimental da Camada de Cobertura do Aterro Morro do Céu, Niterói - RJ.

• Autor(a) principal: Santos, Taísa Ferreira Lopes dos
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/10987
• topic: Environmental Engineering; Landfill, Unsaturated Soils; Landfill Cover System; Soil Water Retention Curve; Morro do Céu Landfill; Vadose/W; Engenharia Ambiental; Aterro Sanitário; Solos Não Saturados; Camada de Cobertura; Curva Característica; Aterro Morro do Céu; Vadose/W; CNPQ::ENGENHARIAS

This study is a review about unsatured soils concepts and describes some types of soil cover systems used in landfills. It presents scientific works about Brazilian tropical soil s Water Retention Curve. It characterizes the soil that was used as a cover layer system used at Morro do Céu landfill and the same soil with addition of 5% of bentonite. It determinates the soil water retention curve by Filter Paper Method and Suction Plate and, after that, Pressure Plate. The curves obtained by these two methods showed differences. The objective of the addition of the bentonite in the soil is to evaluate its performance. The soil with the addition of bentonite shows higher plasticity, lower hydraulic conductivity and higher moisture storage. It presents the modeling of monolithic covers, evapotranspirative monolithic covers, capillary barriers and evapotranspirative capillary barriers by the use of VADOSE/W Program as a tool for gauging.