Sustainable Aggregates Production: Green Applications for Aggregate By-Products

Tutumluer, Erol; Ozer, Hasan; Hou, Wenting; Mwumvaneza, Vincent

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https://hdl.handle.net/2142/78188 Copy

Description

Title

Sustainable Aggregates Production: Green Applications for Aggregate By-Products

Author(s)

• Tutumluer, Erol
• Ozer, Hasan
• Hou, Wenting
• Mwumvaneza, Vincent

Issue Date

2015-06

Keyword(s)

• aggregate
• crushed stone
• quarry by-product
• pavement
• stabilization
• sustainable

Abstract

Increased emphasis in the construction industry on sustainability and recycling requires production of aggregate gradations with lower dust (cleaner aggregates) and smaller maximum sizes—hence, increased amount of quarry by-products (QBs). QBs are usually less than 1/4 in. (6 mm) in size. This report provides findings of an industry survey conducted among Illinois aggregate producers on the annual production rate, excess QBs generated, and current application areas of QBs. In addition, a detailed laboratory study was conducted to characterize the engineering properties of QB materials produced in the primary, secondary, and tertiary aggregate production stages from four different quarries operating in the State of Illinois. Since unconfined compressive strength for QB materials was low (less than 11 psi), chemical admixture stabilizers such as Portland cement and Class C fly ash were used to improve the strength properties of QB materials. Significant increases in the strength of stabilized QB materials observed may indicate suitability of QBs for sustainable pavement applications. Recommendations are made on potential strategies to utilize excess fines by incorporating QB materials in pavement construction.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Series/Report Name or Number

Illinois Center for Transportation Series No. 15-012

ISSN

0197-9191

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/78188

Sponsor(s)/Grant Number(s)

Illinois Department of Transportation, R27-125

Copyright and License Information

No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161

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