Options
Impact of clay on early jet grouting strength
Author(s)
Date Issued
2009-10
Date Available
2010-08-23T15:44:30Z
Abstract
Jet grouting is a ground improvement technique that has become widely adopted over the past three decades, yet relatively little data has been published about performance characteristics of mixes under adverse conditions, such as the inclusion of clay lenses. This paper presents an experimental investigation on the impact of clay on the strength of jet grouting. A total of 150 grout samples were subjected to 0-10% levels of Kaolinite and Bentonite inclusion. While the Bentonite was introduced as a pre-hydrated slurry, the Kaolinite was mixed in two ways: in a pulverized condition and as large chunks. Sample strength and stiffness
were measured at multiple dates within the first 28 days. With 10% clay inclusion all samples exhibited significant strength and stiffness losses. With some, substantial losses began with as little as 4% clay inclusion. Even a 1% clay inclusion tended to decrease strength and stiffness between one-quarter and onethird of the control sample. Depending upon clay type and inclusion method, results differed significantly with respect to strength and stiffness development and failure mechanism. Petrographic analysis was used to provide further insights as to apparently divergent behaviors.
Sponsorship
Not applicable
Type of Material
Conference Publication
Publisher
DFI
Copyright (Published Version)
2009 DFI
Subject – LCSH
Grouting--Testing
Clay
Soil stabilization
Web versions
Language
English
Status of Item
Peer reviewed
Part of
DFI Proceedings of the 34th Annual Conference on Deep Foundations, 2009
Conference Details
DFI 34th Annual Conference on Deep Foundations, October 20-23 2009, Kansas City
This item is made available under a Creative Commons License
File(s)
Owning collection
Views
2220
Acquisition Date
Mar 28, 2024
Mar 28, 2024
Downloads
6082
Last Week
1
1
Acquisition Date
Mar 28, 2024
Mar 28, 2024