DFI Journal - The Journal of the Deep Foundations Institute

Volume 12, Issue 1, January 2018
DOI: 10.1080/19375247.2018.1502066

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Binder Threshold Approach to Predicting Soil Mixing Strength in Organic Soils
Article Type: Research Paper

Costello, K., Baker, S. & Mullins, G.

Abstract


Organic soil stabilisation by mixing with cementitious binders, called soil mixing, has traditionally been problematic due to unpredictable strength gains. Anecdotally, practitioners and specialty contractors recognise a notable increase in the required amounts of binder relative to inorganic soil mixing experiences but this too has been unpredictable. This paper discusses the results from laboratory and field case studies conducted to better estimate the amount of binder required for organic soil mixing, which makes design strength predictions possible.

Keywords:
soil mixing, organic soil, threshold, cement factor, water to cement ratio