Table of Contents
Journal of Waste Management
Volume 2013, Article ID 102519, 8 pages
http://dx.doi.org/10.1155/2013/102519
Research Article

Recycling Glass Cullet from Waste CRTs for the Production of High Strength Mortars

Dipartimento di Chimica, Università di Udine, Fisica e Ambiente, 108 Via del Cotonificio, 33100 Udine, Italy

Received 18 February 2013; Revised 8 May 2013; Accepted 15 May 2013

Academic Editor: Jay N. Meegoda

Copyright © 2013 Stefano Maschio et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present paper reports on the results of some experiments dealing with the recycling of mixed cathode ray tube (CRT) glass waste in the production of high-strength mortars. Waste CRT glass cullet was previously milled, and sieved, and the only fine fraction was added to the fresh mortar in order to replace part of the natural aggregate. The addition of superplasticizer was also investigated. All hydrated materials displayed high compressive strength after curing. Samples containing CRT mixed glass showed a more rapid increase of strength with respect to the reference compositions, and materials with a superplasticizer content of 1% showed the best overall performance due to the favourable influence of the small glass particles which increase the amount of silicate hydrated produced. The induced coupled plasma (ICP) analysis made on the solutions, obtained from the leaching tests, confirmed the low elution of hazardous elements from the monolithic materials produced and consequently their possible environmental compatibility.