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Title:

Blended Fine Aggregates in Pavement Concrete

Accession Number:

01124258

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Manufactured fine aggregate (MFA) can be used as a replacement for or in conjunction with natural sand in concrete mixtures. MFA does not exhibit ideal shape or texture for fine aggregate, and the production of MFA generates high percentages of microfines, particles that pass the No. 200 sieve. Microfines are usually washed from the aggregate due to specification limitations, resulting in wasted aggregate and a coarser fine aggregate grading. Three manufactured sands were incorporated into concrete mixtures to determine their effects on fresh and hardened concrete properties. It was found that greater proportions of manufactured sand caused the workability to decrease, the demand for high-range water-reducing admixture to increase, and the compressive strength to increase.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-2642

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Trachet, Alison
Fowler, David W
Koehler, Eric

Pagination:

16p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (4) ; References (26) ; Tables (3)

Candidate Terms:

Blended cement

Uncontrolled Terms:

Manufactured fine aggregate

Subject Areas:

Highways; Materials; I32: Concrete

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-2642

Files:

TRIS, TRB

Created Date:

Jan 30 2009 6:59PM