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🐃 Como um animal que nem sequer é nativo do Brasil acabou se tornando parte da paisagem amazônica? Uma fuga em Rondônia, em 1953, deu início a uma população que cresceu sem predadores naturais. Hoje, esses enormes animais podem causar impactos ambientais, mas também possuem grande importância econômica. E você, já tinha ouvido falar dos búfalos selvagens da Amazônia?
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O concreto pode parecer completamente sólido depois de endurecer, mas sua resistência começa a ser definida quando ele ainda está fresco. Durante a concretagem, o ar pode ficar aprisionado entre os agregados e, se o material não for adensado corretamente, surgem vazios internos e falhas que prejudicam a qualidade e a durabilidade da estrutura. Foi justamente para resolver esse problema que o vibrador de concreto se tornou uma ferramenta essencial nas obras. Ao transmitir vibrações ao concreto f...
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