Additives for Modifying the Frost Susceptibility of Soils. Part II.

• Main Authors: Lambe,T. William, Kaplar,Chester W., Lambie,Thomas J.
• Other Authors: MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CIVIL ENGINEERING
• Format: Text
• Language: English
• Published: 1971
• Subjects: Soil Mechanics; Snow; Ice and Permafrost; (*FROST HEAVE; SOILS); (*SOILS; FREEZING); ADDITIVES; MOISTUREPROOFING; MELTING; PLASTICS; CEMENTS; CONSTRUCTION; CLIMATOLOGY; SALTS; METALS; GRAVEL; SILT; SAND; IRON COMPOUNDS; CHLORIDES; COLD WEATHER CONSTRUCTION; FROST ACTION; *FROZEN SOILS; FROST SUSCEPTIBILITY; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0733321; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0733321

The report describes results of a search for additives to reduce the frost susceptibility of soil. The additives are divided into four primary function groups: (1) void fillers and cementing agents, (2) aggregants, (3) waterproofers, and (4) dispersants. Tests showed that a dispersant, tetrasodium pyrophosphate (TSPP), and an aggregant, ferric chloride, possess good frost-heave-modifying capabilities. A preliminary field test indicated that TSPP can reduce heave significantly under natural conditions. The long-term effectiveness under field condition is still to be determined. Laboratory tests were conducted to determine the effect of prolonged water attack on the frost-heave-modifying capabilities of 0.3% treatments of TSPP and ferric chloride when used with two silty sandy gravels. (Author) See also Part 1, AD-721 752. Sponsored in part by Contract DA-19-016-ENG-6061.