SYMPOSIA PAPER Published: 01 January 1997

Characterization of Filter Cake Ash and Applications for Soil Stabilization


Recycled applications were investigated for an ash produced from the incineration of diatomaceous earth filter cake used in the manufacture of additives for petroleum products. A complete chemical and physical characterization of the ash was conducted. It includes lumps which are the result of gypsum cementation. The ash produces light-weight products and exhibits pozzolanic characteristics. Mixtures of the ash with sand and other stabilizing agents were investigated for road base and subbase applications. Strength and durability tests and a microanalysis were conducted to identify the stabilization products produced. The testing program for this study indicates that the ash holds promise as a light-weight fine aggregate for use as an earth fill material.

Author Information

McManis, KL
University of New Orleans, New Orleans, LA
Nataraj, M
University of New Orleans, New Orleans, LA
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Developed by Committee: D18
Pages: 219–231
DOI: 10.1520/STP15654S
ISBN-EB: 978-0-8031-5351-6
ISBN-13: 978-0-8031-2470-7