Ingeniería Civil y Mecánica

Permanent URI for this communityhttp://repositorio.uta.edu.ec/handle/123456789/898

Browse

Filters

20261

Settings

Author: search.filters.author.Claudio Tonato Erika NayeliSubject: search.filters.subject.RESISTENCIA A LA COMPRESIÓN

Search Results

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Análisis De La Resistencia A La Compresión De La Muestra Original Del Hormigón Simple E Incluyendo La Ceniza Cáscara De Arroz Como Sustituto Parcial Del Agregado Fino
    (Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil, 2026-06-29) Claudio Tonato Erika Nayeli; Ortiz Montero Santiago Andrés; Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil
    This study evaluated the compressive strength of plain concrete through the partial substitution of fine aggregate with rice husk ash (RHA), to determine its technical viability as a sustainable alternative in construction. The research followed a quantitative experimental approach structured in three phases: first, the physical and chemical characterization of materials; second, the fabrication of cylindrical specimens (100 mm × 200 mm); and third, the mechanical evaluation under compression. A total of 36 specimens were prepared across four groups with RHA substitution levels of 0%, 3% (0.04 kg), 5% (0.06 kg), and 7% (0.09 kg), tested at 7, 14, and 28 days of curing. Mix design followed the ACI 211.1 method, with a design strength of f'c = 210 kg/cm². X-ray fluorescence analysis confirmed that silicon is the predominant element in RHA at 43.88%, verifying its pozzolanic potential. Water absorption was measured at 15.52%, which required a correction in the mixing water to maintain a constant waterto-cement ratio of w/c = 0.57. At 28 days, the mixes with 3% and 5% RHA exceeded the reference concrete, with compressive strength increases of 3.10% and 4.32%, respectively. The 5% substitution level achieved the highest compressive strength at 278.86 kg/cm², establishing it as the optimal proportion. The 7% mix showed a 5.36% reduction relative to the control. It is concluded that 5% substitution is technically viable and supports the valorization of agro-industrial waste, although its implementation requires prior calcination and sieving processes.