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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Characterization and reuse of spent foundry sand in the production of concrete for interlocking pavement

Full text
Author(s):
Santos, L. F. dos [1] ; Magalhaes, R. S. [1] ; Barreto, S. S. [1] ; Santos, G. T. A. [1] ; Paiva, F. F. G. de [2] ; Souza, A. E. de [1] ; Teixeira, S. R. [1]
Total Authors: 7
Affiliation:
[1] Sao Paulo State Univ, UNESP, Solid Waste Characterizat & Management Lab, SWCML, BR-19060900 Presidente Prudente, SP - Brazil
[2] Univ Western Sao Paulo, UNOESTE, BR-19067175 Presidente Prudente, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF BUILDING ENGINEERING; v. 36, APR 2021.
Web of Science Citations: 0
Abstract

This paper presents the characterization of spent foundry sand mixtures (SFS-M) and a new use in the production of concrete blocks for interlocking pavement. Cylindrical and hexagonal concrete blocks were made with the total replacement of natural sand with SFS-M and their mechanical properties were evaluated. The fine aggregates were assessed by scanning electron microscopy, thermogravimetry, X-ray fluorescence and X-ray diffraction. The fresh and hardened concrete tests performed were slump, water absorption, void ratio and compressive strength. The compressive strength of samples with total replacement of natural sand with SFS-M was above 35 MPa. Water absorption was less than 6%, allowing its use as concrete pavement for light traffic. Thus, the results of this work indicated that the production of hexagonal concrete blocks with total replacement of natural sand with SFS-M is technically feasible and economically viable. The reuse of SFS reduces its disposal in landfills and also the use of natural resources resulting in less environmental impact. (AU)

FAPESP's process: 08/04368-4 - Development of a glass-ceramic material by means of controlled vitrification and crystallisation of sugarcane bagasse ash
Grantee:Silvio Rainho Teixeira
Support Opportunities: Regular Research Grants
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC