Banca de DEFESA: CINTHIA MAIA PEDERNEIRAS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : CINTHIA MAIA PEDERNEIRAS
DATA : 25/02/2017
HORA: 09:00
LOCAL: Sala de Aula do PEC
TÍTULO:
EVALUATION OF INTERCONNECTED BLOCKS WITH RECYCLED AGGREGATES FROM RESIDUES OF CONSTRUCTION AND DEMOLITION OF WORKS OF THE MUNICIPALITY OF NATAL/RN

PALAVRAS-CHAVES:

Construction and demolition waste, recycled aggregate, interlocking concrete blocks.


PÁGINAS: 135
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Construção Civil
ESPECIALIDADE: Materiais e Componentes de Construção
RESUMO:

This work aims to analyze the use of construction and demolition waste in Natal/RN as recycled aggregates for precast concrete paving blocks. In the first stage, the detailed characterization of the aggregates (fine and coarse) was carried out. The tests used for this purpose were grading curves, bulk density, dry specific density, pulverulent material, organic material, water absorption, swelling, X-ray fluorescence (FRX), X-ray diffraction (XRD) and electron microscopy of Scanning (SEM). From the characterization tests of natural and recycled aggregates is possible to analyze physical, chemical and microscopic properties. Ten different mixes were analyzed with an effective water/cement ratio of 0.4 for recycled rates of coarse and fine aggregates of 100%. This research analyzed the conditions of the recycled aggregates in the mixture (dry, washed and saturated), evaluation of the performance of aggregates in a concrete mix. The tests to analyze the technical viability of the concrete blocks, according to the specific norm NBR 9781 (2013), were compressive strength (at ages of 7, 14, 28 and 270 days) and water absorption. To evaluate the durability, a prototype was constructed, which was analyzed after one year of construction. The blocks made with only recycled sand showed an increase in the results of compressive strength when compared to the reference blocks. The blocks made with recycled coarse obtained the smallest resistance. It was also observed that when the recycled aggregates are washed present better performance in the final product. The results obtained were satisfactory for the application of the blocks in streets of low movement and low load. With the intense growth of waste from civil construction, the relevance of this research is proposes the manufacture of a sustainable product that aims to minimize the use of natural resources and promote a proper destination for the waste generated.


MEMBROS DA BANCA:
Interno - 1222082 - ADA CRISTINA SCUDELARI
Externo ao Programa - 2508125 - ENIO CAMPOS AMICO
Externo à Instituição - JUZÉLIA SANTOS - IFMT
Presidente - 1284389 - MARIA DEL PILAR DURANTE INGUNZA
Notícia cadastrada em: 15/02/2017 14:58
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