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Title:

USE OF ASH IN LOW-VOLUME ROAD CONSTRUCTION IN SOUTH AFRICA

Accession Number:

00763273

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309065240

Abstract:

Sasol Chemical Industries produces large quantities of coarse clinker and fly ash as a by-product of the coal gasification process at their Sasolburg plant in South Africa. If this ash could be used as an aggregate in roads, the demand on natural reserves for aggregates would be reduced and an effective method of disposing of these materials would result. The ash is processed at a blending plant in Sasolburg and is marketed under the name Premamix. Trial sections were constructed using labor-based techniques with unstabilized and bitumen emulsion-treated Premamix as a base course material. As the Premamix is a lightweight material and is delivered at a specified moisture content (the optimum moisture content for compaction), it is ideal for labor-based construction of low-volume roads as only spreading and compaction of the layers are required. The trial sections were subjected to accelerated pavement testing with the heavy-vehicle simulator. Although high deflections were measured in the pavement structure, the Premamix performed well under trafficking, even after the base was soaked with water.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1652, Seventh International Conference on Low-Volume Roads, May 23-26, 1999, Baton Rouge, Louisiana, Volume 1.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Heath, A
Theyse, H
Lea, J

Pagination:

p. 196-202

Publication Date:

1999

Serial:

Transportation Research Record

Issue Number: 1652
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

Seventh International Conference on Low-Volume Roads

Location: Baton Rouge, Louisiana
Date: 1999-5-23 to 1999-5-26
Sponsors: US Forest Service; Federal Highway Administration; US Bureau of Indian Affairs; Louisiana State University; World Road Association; Department of International Development-UK; Louisiana Transportation Research Center; Louisiana DOT

ISBN:

0309065240

Features:

Figures (3) ; Photos (1) ; References (10) ; Tables (6)

Geographic Terms:

South Africa

Subject Areas:

Construction; Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers; I50: Construction and Supervision of Construction

Files:

TRIS, TRB, ATRI

Created Date:

May 24 1999 12:00AM