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Abstract

 

This article in SSSAJ

  1. Vol. 38 No. 4, p. 586-590
     
    Received: Jan 11, 1974


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doi:10.2136/sssaj1974.03615995003800040020x

A Postulated Mechanism for Increasing the Efficiency of Organic Soil Conditioners1

  1. J. T. Koch,
  2. B. D. Kay and
  3. G. L. Lange2

Abstract

Abstract

A mechanism whereby organic polymers may be made more effective in maintaining the water stability of soil aggregates is postulated. The proposed mechanism employs coupling agents which chemically bond parts of the organic and inorganic phases of the aggregate together.

Various silane coupling agents and other compounds of similar structure were added to soil aggregates. Predictions based on the proposed mechanism were tested by recording the effects of the compounds on aggregate stability as measured by the wet-sieving technique. Addition of silicon—functional compounds resulted in a marked increase in the water stability of soil aggregates. However, it was not possible to prove conclusively that the organic functionality of NH2(CH2)3Si(OC2H5)3 participated in the postulated mechanism of strength improvement.

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