Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

It is generally accepted, that only chemical grouts or solutions are available to penetrate and fill narrow joints or soils with very small pore size. During the last 30 years, a few hundreds of different compounds have been used for this purpose. Such materials show a wide spectrum of properties. Epoxy resins are some of the common compounds which are used in chemical grouting due to their high strength and durability against mechanical or physical erosion. In this paper, the improvement of physical and mechanical properties of fine sand injected with a water soluble, two component epoxy resin is investigated. The experiments were carried out, either using only epoxy resin(“one shot process”) or, in combination with sodium silicate(“two shot process”). For this reason, two epoxy resin solutions have been employed. The one was thick with water/resin (W/R) ratio of 1 and the other was more dilute with W/R of 2. The grouting was performed through 10 cm diameter columns, filled with siliceous sand with particle size distribution of 0.149/2.1mm and 0.076/2.1mm. For the two shot grouting, two solutions of sodium silicate were used, with sodium silicate/water ratio of 3 and 2, respectively. Results of a comparison between the above two processes, showed that the compressive strength and durability of injected sand specimens of the one shot process is much lower than that of the two shot process. On the contrary, the permeability and the porosity of the sand were lowered much more in the first case.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Improvement of Fine Sand Properties with Water Soluble Epoxy Resin Grouts

New York, New York

It is generally accepted, that only chemical grouts or solutions are available to penetrate and fill narrow joints or soils with very small pore size. During the last 30 years, a few hundreds of different compounds have been used for this purpose. Such materials show a wide spectrum of properties. Epoxy resins are some of the common compounds which are used in chemical grouting due to their high strength and durability against mechanical or physical erosion. In this paper, the improvement of physical and mechanical properties of fine sand injected with a water soluble, two component epoxy resin is investigated. The experiments were carried out, either using only epoxy resin(“one shot process”) or, in combination with sodium silicate(“two shot process”). For this reason, two epoxy resin solutions have been employed. The one was thick with water/resin (W/R) ratio of 1 and the other was more dilute with W/R of 2. The grouting was performed through 10 cm diameter columns, filled with siliceous sand with particle size distribution of 0.149/2.1mm and 0.076/2.1mm. For the two shot grouting, two solutions of sodium silicate were used, with sodium silicate/water ratio of 3 and 2, respectively. Results of a comparison between the above two processes, showed that the compressive strength and durability of injected sand specimens of the one shot process is much lower than that of the two shot process. On the contrary, the permeability and the porosity of the sand were lowered much more in the first case.