ASH BENEFICATION IN ROAD CONSTRUCTION MATERIALS.pdf

Cyril Attwell, ARC Innovations
Kelley Reynolds-Clausen, Eskom Holdings SOC LTD

Description

Ash Beneficiation in Road Construction Materials. Authors Mr. Cyril Attwell - South Africa - ARC Innovations Dr. Kelley Reynolds-Clausen - South Africa - Eskom Holdings SOC LTD Abstract Kelley Anne Reynolds-Clausen1 and Cyril N Attwell2 1Eskom Research, Testing and Demonstration, Eskom Holdings SOC Ltd, South Africa. reynolka@eskom.co.za. 2ARC Innovations, 83 Bonnyvale Road, .Norton Home Estates, Gauteng, South Africa. Cyril.attwell@eskom.co.za Keywords: Alkali-activation, coal ash, road construction Road construction traditionally involves the use of virgin material from borrow pits for the development of the base and subbase stabilisation layers. This is often a costly exercise and requires extra management for the project. Often concrete is utilised in these base layers, which is regulated according to SANS 10100/1 and /2. This standard allows for the use of non-cementitious materials in concrete, provided they are able to attain the required properties, it terms of strength and durability. Activated Ash materials have been developed in South Africa, using commercial user-friendly activators, which are proven to offer the required properties, while utilising the local legacy ash. This paper will expand on the road construction work completed to date and highlight the on-going research.

 
May 15th, 3:00 PM May 15th, 3:30 PM

ASH BENEFICATION IN ROAD CONSTRUCTION MATERIALS.pdf

Grand Rapids, Michigan

Ash Beneficiation in Road Construction Materials. Authors Mr. Cyril Attwell - South Africa - ARC Innovations Dr. Kelley Reynolds-Clausen - South Africa - Eskom Holdings SOC LTD Abstract Kelley Anne Reynolds-Clausen1 and Cyril N Attwell2 1Eskom Research, Testing and Demonstration, Eskom Holdings SOC Ltd, South Africa. reynolka@eskom.co.za. 2ARC Innovations, 83 Bonnyvale Road, .Norton Home Estates, Gauteng, South Africa. Cyril.attwell@eskom.co.za Keywords: Alkali-activation, coal ash, road construction Road construction traditionally involves the use of virgin material from borrow pits for the development of the base and subbase stabilisation layers. This is often a costly exercise and requires extra management for the project. Often concrete is utilised in these base layers, which is regulated according to SANS 10100/1 and /2. This standard allows for the use of non-cementitious materials in concrete, provided they are able to attain the required properties, it terms of strength and durability. Activated Ash materials have been developed in South Africa, using commercial user-friendly activators, which are proven to offer the required properties, while utilising the local legacy ash. This paper will expand on the road construction work completed to date and highlight the on-going research.