Bibliographic citations
Ibañez, C., Chuquizapon, K. (2020). Influencia de la densidad de las perlas de poliestireno sobre el costo, peso unitario, asentamiento, resistencia a compresión y flexión en un concreto ligero estructural para losas aligeradas, Trujillo 2020 [Tesis, Universidad Privada del Norte]. https://hdl.handle.net/11537/24149
Ibañez, C., Chuquizapon, K. Influencia de la densidad de las perlas de poliestireno sobre el costo, peso unitario, asentamiento, resistencia a compresión y flexión en un concreto ligero estructural para losas aligeradas, Trujillo 2020 [Tesis]. PE: Universidad Privada del Norte; 2020. https://hdl.handle.net/11537/24149
@misc{sunedu/3002353,
title = "Influencia de la densidad de las perlas de poliestireno sobre el costo, peso unitario, asentamiento, resistencia a compresión y flexión en un concreto ligero estructural para losas aligeradas, Trujillo 2020",
author = "Chuquizapon Suarez, Kevin David",
publisher = "Universidad Privada del Norte",
year = "2020"
}
The present thesis was carried out in the city of Trujillo, where the tests were carried out in the concrete laboratory of the Universidad Privada del Norte, and its main objective was to determine the influence of the density of polystyrene pearls on cost, unit weight , Settlement, Compressive and Bending Strength in Lightweight Structural Concrete for Lightweight Slabs. The aggregates were obtained from the Sleeping Lion quarry. The first thing that was done was the characterization of the fine and coarse aggregates (granulometry, moisture content, unit weight, specific weight and absorption) according to the NTP, in order to check if the material is suitable for making concrete. . Then the mix design for a concrete of resistance 210 kg/cm2 was elaborated by the ACI 211 method. This project was done in order to achieve lightweight structural concrete in lightweight slabs, which used two types of polystyrene bead densities of 7.35 kg / m3 and 21.12 kg / m3, and was replaced by fine aggregate with percentages of 15 %, 30%, 45%, 50% and 60% depending on the volume of the sand. All the materials were mixed in the mixer, followed by the settlement test and the unit weight in the fresh state of the concrete according to the NTP 339.035 and NTP 339.046 standards, respectively. Subsequent step, the 20 cm high and 10 cm diameter specimens for the compressive strength of concrete according to the NTP 339.034 standard were prepared, as well as 15 cm wide, 15 cm high and 50 cm long beams. to measure its flexural strength according to NTP 339.078 at 28 days of curing. Conventional concrete obtained a settlement of 8 cm, a unit weight of 2350 kg/m3, a compressive strength of 412 kg/cm2 and a flexural strength of 55 kg/cm2. On the other hand, the concrete made with different densities of polystyrene, presented reductions in its unit weight and resistance to compression, but its settlement was increasing, although the concrete made with polystyrene of density 21.12 kg/m3, its settlement is greater than the samples made with polystyrene beads of density 7.35 kg/m3. According to Rivera (2013), the allowed settlement in slabs is between 5 cm and 10 cm. Also according to ACI 213; they mention that it is considered a light concrete when its weight is less than that of a conventional concrete whose weight is between 2200 kg/m3 and 2400 kg/m3; According to the NTE E.060 standard, a structural concrete must not be less than 175 kg/cm2. Therefore, according to the graph f’c - settlement, the equilibrium point was determined concluding that 40% of polystyrene beads is the appropriate replacement. By means of tabulations with the results of the tests carried out with the percentages of replacement with polystyrene beads, it can be deduced that its settlement is 10 cm, unit weight of 2170 kg/m3, compressive strength can reach 287 kg/cm2 and resistance to flexion with 43 kg/cm2.
This item is licensed under a Creative Commons License