Banca de QUALIFICAÇÃO: PABLO AUGUSTO DOS SANTOS ROCHA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : PABLO AUGUSTO DOS SANTOS ROCHA
DATE: 08/11/2021
TIME: 09:00
LOCAL: Ambiente virtual por conferência web via Rede Nacional de Ensino e Pesquisa (RNP)
TITLE:

Interface parameters: blocks, geogrid and aggregates in Segmental retaining walls

KEY WORDS:

sustainable; recycled aggregates; geogrid; geosynthetics; segmental blocks.

PAGES: 82
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

The non-rational consumption of natural resources and waste generation are some aspects that compromise the sustainable development of the civil construction industry, which uses a considerable volume of aggregates, such as sand and gravel, in the production of concrete, mortar, as well as a material for filling in urban and road infrastructure works, among others. The generation of construction and demolition waste (CDW) by the civil construction industry (CCI) can have a potential impact on society and the environment, which is aggravated by non-compliance with current legislation. In order to mitigate possible impacts, the ICC itself has been seeking ways to insert CDW, through practices such as recycling or reuse. The use of segmental retaining walls as a solution in urban infrastructure has grown in recent years, as they meet technical, architectonic, economic, and deadline aspects. Soil for filling, geosynthetics, segmental blocks, and natural aggregates can be used for the execution of walls with reinforced soils. Geosynthetics are products made from polymers that have different functions and are used in different applications. In segmental retaining walls, geosynthetics, mainly geogrids, are used as reinforcement material. Segmental blocks can be used in the face, working as an anchoring element and as a lateral form of structure. Natural aggregates are used to fill segmental blocks, increasing the set’s capacity of anchoring reinforcement to the wall, as well as helping to drain structure. The use of recycled concrete aggregates (RCA) as filling material for segmental blocks in segmental retaining walls is a hypothesis that can enable an adequate destination for CDW. For this research, the RCA comes from interlocking blocks, after a beneficiation process in a CDW recycling plant. The RCA will be characterized and, to assess their potential use as filling material for segmental blocks, connection tests will be carried out, in which the connection parameters will be evaluated. For comparison purposes, the same tests will be performed with natural aggregates. It is expected that with the tests of recycled aggregates they will obtain a performance similar to natural aggregates, validating their potential use as filling material for segmental blocks in segmental retaining walls.

BANKING MEMBERS:
Interno - CONRADO DE SOUZA RODRIGUES
Externo à Instituição - EDUARDO SOUZA CÂNDIDO - UFLA
Externo à Instituição - JEFFERSON LINS DA SILVA - USP