Bibliographic citations
Álvarez, S., Coriat, C. (2021). Estudio de la densidad, porcentaje de absorción, y vacíos del concreto cemento – arena empleando la norma ASTM C 642, Iquitos - 2021 [Trabajo de suficiencia profesional, Universidad Científica del Perú]. http://hdl.handle.net/20.500.14503/1428
Álvarez, S., Coriat, C. Estudio de la densidad, porcentaje de absorción, y vacíos del concreto cemento – arena empleando la norma ASTM C 642, Iquitos - 2021 [Trabajo de suficiencia profesional]. PE: Universidad Científica del Perú; 2021. http://hdl.handle.net/20.500.14503/1428
@misc{renati/193117,
title = "Estudio de la densidad, porcentaje de absorción, y vacíos del concreto cemento – arena empleando la norma ASTM C 642, Iquitos - 2021",
author = "Coriat Zavaleta, Christian Gerard",
publisher = "Universidad Científica del Perú",
year = "2021"
}
Study of the density, absorption percentage, and voids of cement-sand concrete using the ASTM C 642 standard, Iquitos - 2021 For cement-sand concrete, the use of which predominates in the Peruvian Low Forest, there were no studies evaluating the properties in the hardened state of density, percentage of absorption and porosity (percentage of voids), a reason that justified the conduct of the present investigation. The materials used were fine sand with a modulus of fineness of 1.27, portland cement type GU (APU). 36 4 "x8" cement-sand concrete specimens were made, prepared for 0.60, 0.65 and 0.70 water / cement ratios. To determine the compressive strength, the ASTM C 39 standard was used, breaking 5 specimens for each water / cement ratio, at 7 and 28 days. For the determination of density, absorption percentage and porosity, the ASTM C 642 standard was used, each of these tests being carried out on a single specimen at 7 and 28 days. And the performance of complementary tests to determine the air content of the concrete and the temperature of the concrete in the freshly mixed state by means of the ASTM C 138 and ASTM C 1064 standards respectively. From the results obtained, it can be concluded that, with a higher w / c ratio, cement-sand concrete acquires a similar density than normalized concrete, but greater absorption and porosity, as well as lower resistance to compression. From the analysis of the fragments resulting from the breakage of each specimen, the upper part presented low density, high absorption and high porosity, and the lower fragment turned out to have a higher density, but low absorption and low porosity.
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