Browsing by Author "Caiza Yungán, Klever Javier"

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    Estudio comparativo de la resistencia a compresión entre el hormigón (f´c = 240 kg/cm2), hormigón con adición de microsílice y hormigón con adición de ceniza de cáscara de trigo utilizando agregados pertenecientes a la planta de trituración “Jaime Vaca” del cantón Tena de la provincia del Napo
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2017) Caiza Yungán, Klever Javier; Ureña Aguirre, Maritza Elizabeth
    The present experimental work begins with the analysis of the physical and mechanical properties of the fine and coarse aggregate obtained from the Jaime Vaca crushing plant located in the Canoa Yacu sector of the Tena canton of the Napo province, where acceptable results were obtained concrete mix. Then two artificial pozzolans are sought to partially replace the cement and to make concrete; for which wheat husk ash with a silica content between 70% and 80% which is a residue of the agricultural industry and silica fume with a silica content of more than 95% which is a processed industrial waste was used. During the investigation, partial substitutions of the cement with different dosages were performed, that is, 20%, 24%, 28% with wheat husk ash and 7%, 11%, 15% were replaced with silica fume, making concrete specimens with the different dosages and were tested at 7, 14 and 28 days of curing. The partial replacement of the cement with 20% of the wheat husk ash presented better results than with 24% and 28%, giving a strength of 212,11 kg/cm2 tested at 28 days of curing. The partial replacement of the cement with 7%, 11% and 15% of silica fume presented good results exceeding 80% the established strength of 240 kg/cm2.