About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in JEQ

  1. Vol. 6 No. 3, p. 267-270
     
    Received: Sept 16, 1976
    Published: July, 1977


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/jeq1977.00472425000600030007x

Physical Properties of Fly Ash-Amended Soils1

  1. A. C. Chang,
  2. L. J. Lund,
  3. A. L. Page and
  4. J. E. Warneke2

Abstract

Abstract

Fly ash from a coal-fired power generating plant was mixed with five California soils at rates of 0, 2.5, 5.0, 10.0, 25.0, and 50.0% by volume. The physical properties related to the agronomic use of fly ash-amended soils were characterized by determining water-holding capacity, bulk density, hydraulic conductivity, and modulus of rupture on laboratory compacted soil cores. The moisture release characteristics of each mixture were also determined. Results indicated that a small amount of fly ash added to soils does appear to affect some measured physical properties of soils. At application rates > 25%, there was a consistent increase in water-holding capacity (except a Domino loam soil), and a decrease in bulk density and modulus of rupture in all soils tested. The hydraulic conductivity increased with small amounts of fly ash, but declined rapidly as fly ash volume increased. Although fly ash application increased the water-holding capacity of soils, the amount of water available to the plant did not change significantly. At a low applicant rate, fly ash amendment appeared useful in improving certain agronomic properties of soils.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .