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Hydrotropic additive for process water used to condition and stabilize soils and other base materials used in construction

a technology of process water and additive, which is applied in the field of hydrotropic additive for process water used, can solve the problems of water cost, equipment and labor cost for distributing water, and achieve the effects of reducing evaporation rate, reducing surface tension, and increasing water activity

Inactive Publication Date: 2006-05-04
EGP ECO II INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a method of preparing materials like roads, buildings, and foundations by mixing water with a special wetting agent that enhances the activity of water for soil materials. This wetting agent reduces the amount of water needed, reduces energy and time required for preparation, and reduces evaporation. The wetting agent includes an alkylphenol ethoxylate, a polyglycol, and an antifoaming agent. This combination of chemicals produces a wetting agent that provides these advantages.

Problems solved by technology

Costs of water, as well as the equipment and labor costs for distributing the water are significant.

Method used

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Examples

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Embodiment Construction

[0006] Many factors affect the water-demand of foundation base materials and / or soils. This water demand is due in large part to the rate of particle hydration and, once hydrated, the ability of base particles to retain moisture and agglomerate. The mineralogy, particle-size-distribution, degree of hydration prior to delivery to the site, and ambient weather conditions are among the important factors involved in water demand for base preparation.

[0007] One form of the present invention uses a combination of surfactants and hygroscopic compounds mixed with water to stabilize and prepare a roadbed, building foundation, or soil to be settled for whatever purpose. Use of this “hydrotrope”, or hydrotropic wetting agent, allows for significantly less water to be used in the preparation process, less time required to condition the material, thus saving costs for the water itself, the labor, energy, environmental control and equipment costs required to apply it.

[0008] Methods of the prese...

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PUM

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Abstract

Hydrotropic wetting agents enhance the activity of water for earthy materials by lowering surface tension to promote surface-to-surface contact, to neutralize the electric double layer, to destroy protective colloids, to neutralize other charged particles, and to bind water to the materials, thus, significantly reducing the evaporation rate and, concomitantly, reducing the amount of water that must be applied and the energy and time used to prepare the material. A wetting agent suitable for the present invention includes an alkylphenol ethoxylate (APE) and a polyglycol, such as, for example, glycerin or propylene glycol (when toxicity is not an issue), and an antifoaming agent, such as for example, a polysiloxane polymer. These chemicals combined in the concentration ranges of the present invention produce wetting agent / hydrotropic formulations that may be used to provide the advantages of the present invention.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] The present application claims priority to Provisional Application Ser. No. 60 / 435,854, filed Dec. 20, 2002, titled WETTING AGENT / MOISTURE CONTROL FORMULATION, which is hereby incorporated by referenceBACKGROUND OF THE INVENTION [0002] It is known in the construction arts that water must be applied to base materials and / or soils when preparing foundations for buildings, roads, and similar construction projects. Often, especially during hot, dry weather, materials require substantial amounts of water to adsorb and absorb sufficient moisture for compaction to specified densities. Sorbed moisture levels specified for a given project depend upon the nature of the base material and the degree of compaction needed to make a stable base, whereas the amount of water applied to achieve the required amount sorbed depends on the rate at which liquid migrates through pore spaces among particles, the rate at which water penetrates into particles, an...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E02D3/12C09K17/14C09K17/36E02D31/06
CPCC09K17/14C09K17/36E02D3/126E02D31/06
Inventor SMITH, JAMES W.KEY, MORRIS D.
Owner EGP ECO II INC
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