Estudio Del Módulo De Rotura En Mezclas De Hormigón Con Fibra De Abacá Para Pavimento Rígido Considerando Tránsito De Riobamba

The purpose of this research is to publicize the influence that abaca fiber has on the "Module of Rupture" (MR) in hydraulic concrete mixtures for rigid pavements considering the traffic of Av. Pedro Vicente and Av. Monseñor Leónidas Proaño, in the sector called “Media Luna” of the city of Riobamba. Characterization tests were carried out on the following materials: Chimborazo type GU cement, river sand from the “Hormigones Moreno” concrete mixer extracted from the Chambo mine called “La Guadalupe” and crushed stone from the “Cerro Negro” mine in Riobamba, having positive results and complying with the requirements for its use in a rigid pavement as established by NEVI-12 (granulometry, colorimetry, percentage of abrasion, content of clay lumps and brittle particles). In turn, the physical properties of the abaca fiber acquired in the city of Santo Domingo de los Tsáchilas were determined. The dosage was developed by the optimal density method, with which six beams were developed for each of the following samples: Simple Concrete (HS) or control sample, HS with the addition of 0.25% and 0.50% of dispersed fibers, and HS with the addition of 0.25% and 0.50% fibers located longitudinally, giving a total of 30 beams. In the results of these tests, an increase in MR was noted with the addition of abaca fibers located both dispersed and longitudinally concerning the control sample. Still, the one that stands out the most is the longitudinal fiber at 0.50%, since it reflects more excellent elasticity and an increase in the MR of 19.26%. Based on these results, a second stage of tests was carried out in which it comprised only the control sample and HS sample with the addition of 0.50% of fiber located longitudinally. Adding Sika 3 accelerating additive, finding that with the use of the accelerator at 7 days, 80% of the final resistance of the MR was obtained, as established by the NEVI-12 for roads of great importance, causing an increase of 2.19% of the MR at 28 days. The chemical components of the accelerator deteriorated the fiber and caused a decrease in its mechanical properties.

• Hoofdauteur: Pilicita Parra, Cristian David (author)
• Andere auteurs: Puluche Haro, Vicente Fernando (author)
• Formaat: bachelorThesis
• Taal: spa
• Gepubliceerd in: 2022
• Onderwerpen: PAVIMENTO RÍGIDO; FIBRA DE ABACÁ
• Online toegang: http://dspace.unach.edu.ec/handle/51000/9424