Banca de DEFESA: ALEX ARMANDO DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ALEX ARMANDO DA SILVA
DATE: 18/05/2023
TIME: 08:00
LOCAL: A DEFINIR
TITLE:
TECHNICAL EVALUATION OF THE USE OF WASTE FROM AN ASPHALT PLANT IN HOT MACHINED ASPHALT CONCRETE MIXTURES

KEY WORDS:
Asphalt waste. Concrete plant waste. Graded gravel with asphalt.

PAGES: 96
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Geotécnica
SPECIALTY: Pavimentos
SUMMARY:
Road transport in Brazil is the main means of movement of goods, services and people nowadays. Given this situation, with population growth, it is necessary to carry out maintenance and construction of highways in the country, which leads to the exploitation of natural resources and the generation of waste that cause major environmental problems. In this segment, it's important mentioning that in the production process of Hot-Machined Asphaltic Concrete (HMAC) a residue called Brita Graduate with Asphalt (BGA) is generated, a noble material, composed of coarse aggregates, small aggregates and Petroleum Asphalt Cement (PAC). Thus, the present study analyzed the technical feasibility of using BGA in proportions of 0%, 2%, 4%, 6% and 8%, by mass, in relation to new hot-machined asphalt mixtures for application in of road works. For this, chemical characterization analysis by X-Ray Fluorescence (XRF), mineralogical analysis by X-Ray Diffraction (XRD) and physics of BGA and natural aggregates were carried out. Asphalt mixtures with the incorporation of BGA were produced based on Marshall dosing procedures, embodied in the National Department of Transport Infrastructure (NDTI) standards. At the end of the work, it was verified that the mixes of concrete with 2% and 8% of BGA presented the best values for the volumetric parameters and Marshall stability, so that they were superior to those recommended by the Brazilian technical standards. In addition, the results of the physical, chemical and mineralogical characterization revealed values compatible with the natural aggregates used in paving works in the country. Thus, it is concluded that the use of BGA presents itself as an alternative material to be used in the composition of (HMAC), meeting the technical criteria required by Brazilian agencies, in addition to providing advantages from an economic and environmental point of view.

COMMITTEE MEMBERS:
Presidente - ***.307.994-** - ENIO FERNANDES AMORIM - IFRN
Interno - 1149451 - OLAVO FRANCISCO DOS SANTOS JUNIOR
Externo ao Programa - 2085750 - FAGNER ALEXANDRE NUNES DE FRANCA - UFRNExterno à Instituição - MARCONDES MENDES DE SOUZA - IFRN
Notícia cadastrada em: 04/05/2023 20:02
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