Análise dos métodos de controlo de integridade de geomembranas de PEAD usadas em aterros de RSU
DOI:
https://doi.org/10.14195/2184-8394_106_6Resumo
Nos aterros de resíduos sólidos urbanos (RSU), as geomembranas são utilizadas no sistema de confinamento da base e taludes, como barreira à fuga de lixiviados, devendo resistir a agressões químicas e biológicas por parte dos resíduos, lixiviados e biogás, a agressões mecânicas durante a construção (tráfego de obra, colocação de camadas sobrejacentes, etc.) e exploração (peso dos resíduos, assentamentos da fundação, etc.) e ao efeito da exposição aos raios solares, entre outros. Como a eficácia do funcionamento do sistema de confinamento dos aterros de RSU está muito dependente do desempenho das geomembranas e este da sua integridade física, considerou-se importante apresentar os possíveis tipos e origens dos danos a que as geo membranas podem ser sujeitas e fazer uma análise dos métodos mais adequados para a detecção de orifícios e subsequente reparação.
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