Comparison of Chemical Grout Properties
نویسندگان
چکیده
Chemical grout use began seriously some thirty years ago with the use of only a few types; silicates, acrylamide, epoxy, and some fatty acid derivates. Since then, the kinds of grout have proliferated with some of the originals still there, others dropping out entirely, and still others changing in type. This paper is about the current uses of chemical grouts, the economics of product use, and a discussion of where specific products within a category can be used. Comparisons will be related to the ability of the grout to penetrate soils or to adhere to concrete, the cure time range of each type and actual practice in the field. Common problems solved with each type of grout and why each works or doesn’t is discussed, as well as the effects of organic impurities and the acidity or alkalinity of the soil or rock. It should provide a useful overview for the engineer and practitioner. The following grouts will be covered: Page • Acrylamide grout 2-3 • N-Methylolacrylamide grout 4-5 • Acrylate grouts 5 • Polyurethanes grouts 5 • Hydrophilic grouts 5-6 • Hydrophobic grouts 6-8 • Ultrafine (or microfine) cement grout 8-9 • Epoxy grouts 9-10 • Archeological grout 10-11 a David Magill, Avanti International, 822 Bay Star Boulevard, Webster, TX 77598, 281-486-5600 b Richard Berry, Rembco Geotechnical Contractors, PO Box 23009, Knoxville, TN, 37933, 865-671-2926
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