Tantaquilla, C. (2017). Influencia de piedra pómez sobre asentamiento, densidad, absorción y resistencia a compresión en concreto liviano estructural [Tesis, Universidad Privada del Norte]. https://hdl.handle.net/11537/12533
Tantaquilla, C. Influencia de piedra pómez sobre asentamiento, densidad, absorción y resistencia a compresión en concreto liviano estructural [Tesis]. PE: Universidad Privada del Norte; 2017. https://hdl.handle.net/11537/12533
title = "Influencia de piedra pómez sobre asentamiento, densidad, absorción y resistencia a compresión en concreto liviano estructural",
author = "Tantaquilla Cueva, Cleiser Alejandro",
publisher = "Universidad Privada del Norte",
year = "2017"
ABSTRACT The research project focused on obtaining Lightweight Structural Concrete composed of a lightweight natural aggregate such as pumice stone. To achieve this aim, a conventional concrete mix was made with natural aggregates from the existing quarries in Huanchaco - Trujillo and another light concrete with the use of pumice found on the north coast of the Peruvian sea, the use of this stone was Made in different sizes 12.50 mm (1/2 "), for the coarse aggregate and 2.36 mm (No. 6), for the fine aggregate, for both cases the replacement of the aggregates was given according to the volumes they occupied in the Mixing in the following percentages: 20%, 40%, 60%, 80% and 100%. Likewise, Type ICo cement and EUCO 37 superplasticizer additive were used at 1% of the cement content. Both the light and conventional aggregates were subjected to characterization tests under ASTM Standards, which were required to perform the concrete mix designs under ACI 211. Samples of 100 x 200 mm (4 x 8 in) were made according to Standard ASTM C192. Four replicates were used for each variable to obtain a reliability of 95%. Compressive strength was performed according to ASTM C39, density under ASTM C642 and ASTM C567, as far as settling was developed according to ASTM C143. In the case of conventional concrete, concrete mixtures were studied in relation to a / c of 0.58 for a strength of 210 kg/cm2 , obtaining average compressive strengths of 296 kg/cm2 at 28 days of curing and 323 kg/cm2 . At 56 days of curing, the average density of 2263 kg/m3 and a settlement of 7.55”. In addition, a cost of S /. 236.60 per m3. On the other hand, the optimum replacement of the thick aggregate by pumice is in the range of 20% to 60% by volume, obtaining compressive strength values from 276 kg/cm2 to 233 kg/cm2 at 28 days of curing and 303 kg/cm2 at 259 kg / cm 2 at 56 days of curing. Also a settlement of 6.4 "to 4" and an equilibrium density of 2150 kg / m3 to 1918 kg/m3 . In addition, a production cost of S/. 238.02 and S/. 240.84 per m3. As for the fine aggregate the optimum replacement can be up to 100%, obtaining a compressive strength value of 222 kg/cm2 at 28 days of curing and 238 kg/cm2 at 56 days of curing. Also a settlement of 5.2 "and an equilibrium density of 1956 kg/m3 . In addition, a production cost of S/. 242.73 per m3.
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