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Title: Solidification/stabilization of spent abrasives and use as nonstructural concrete

Abstract

Tons of spent abrasives result each year from the removal of old paint from bridges. Because the spent abrasives contain metals from the paint, some spent abrasives may be considered hazardous by the Toxicity Characteristic (TC) criteria. Incorporation of the spent blasting abrasives in nonstructural concrete (rip-rap, dolphins) offers an opportunity to recycle the spent abrasives while immobilizing potentially leachable metals. This study focused on the Portland Cement Solidification/Stabilization (S/S) of spent blasting abrasives taken from a bridge located in Southeast Texas. The study examined (a) the cadmium, chromium, and lead concentrations in extracts obtained by using the Toxicity Characteristic Leaching Procedure (TCLP) and (b) the compressive strengths of Portland Cement mixes that contained different amounts of the spent abrasives. Performance was measured by meeting the TC criteria as well as the requirements for compressive strength. Study results indicated that considerable quantities of these spent abrasives can be solidified/stabilized while reducing the leachability of cadmium, chromium, and lead and producing compressive strengths over 6,895 kN/m[sup 2] (1,000 psi).

Authors:
;  [1]
  1. (Univ. of Texas, Austin, TX (United States))
Publication Date:
OSTI Identifier:
5524894
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; (United States); Journal Volume: 13:4
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ABRASIVES; RECYCLING; CADMIUM; ECOLOGICAL CONCENTRATION; CHROMIUM; LEAD; CONCRETES; LEACHING; PAINTS; SOLIDIFICATION; STABILIZATION; BUILDING MATERIALS; COATINGS; DISSOLUTION; ELEMENTS; MATERIALS; METALS; PHASE TRANSFORMATIONS; SEPARATION PROCESSES; TRANSITION ELEMENTS; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management

Citation Formats

Brabrand, D.J., and Loehr, R.C. Solidification/stabilization of spent abrasives and use as nonstructural concrete. United States: N. p., 1993. Web. doi:10.1016/0956-053X(93)90062-2.
Brabrand, D.J., & Loehr, R.C. Solidification/stabilization of spent abrasives and use as nonstructural concrete. United States. doi:10.1016/0956-053X(93)90062-2.
Brabrand, D.J., and Loehr, R.C. Fri . "Solidification/stabilization of spent abrasives and use as nonstructural concrete". United States. doi:10.1016/0956-053X(93)90062-2.
@article{osti_5524894,
title = {Solidification/stabilization of spent abrasives and use as nonstructural concrete},
author = {Brabrand, D.J. and Loehr, R.C.},
abstractNote = {Tons of spent abrasives result each year from the removal of old paint from bridges. Because the spent abrasives contain metals from the paint, some spent abrasives may be considered hazardous by the Toxicity Characteristic (TC) criteria. Incorporation of the spent blasting abrasives in nonstructural concrete (rip-rap, dolphins) offers an opportunity to recycle the spent abrasives while immobilizing potentially leachable metals. This study focused on the Portland Cement Solidification/Stabilization (S/S) of spent blasting abrasives taken from a bridge located in Southeast Texas. The study examined (a) the cadmium, chromium, and lead concentrations in extracts obtained by using the Toxicity Characteristic Leaching Procedure (TCLP) and (b) the compressive strengths of Portland Cement mixes that contained different amounts of the spent abrasives. Performance was measured by meeting the TC criteria as well as the requirements for compressive strength. Study results indicated that considerable quantities of these spent abrasives can be solidified/stabilized while reducing the leachability of cadmium, chromium, and lead and producing compressive strengths over 6,895 kN/m[sup 2] (1,000 psi).},
doi = {10.1016/0956-053X(93)90062-2},
journal = {Waste Management; (United States)},
number = ,
volume = 13:4,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}