FROST PROPERTIES OF CEMENT STABILIZED BASES AND SUBBASES
A short cut frost heave test is briefly described which makes use of the fact that initial compaction moisture content influences heaving rate and total heave of soil. The test is then compared with the ASTM freezing and thawing test for cement stabilized soil. These tests were applied to the materials investigated. The development was studied of the frost resistance with time of cement stabilized Gm-silty gravel, and the development of early frost resistance of the cement stabilized soil with increasing cement contents. The development was studied of frost resistance with time of the stabilized Gm-silty gravel and the same with increasing lime content. Studies indicate that the percentages determined by the ASTM-freezing and thawing test corresponds to favorable climatological and hydrological conditions. In the short-cut frost heave test, this corresponds to the percentage that results in a heave of 2 percent for samples compacted slightly dry of or at Proctor optimum. The results of the investigations show that working wet of Proctor optimum moisture content is not justified in frost areas. All cement stabilized materials from Gw-well graded gravel, down to SC-clayeys and, show in the laboratory short-cut frost heave test that at all cement contents the wet compacted samples show less resistance to frost action than the one obtainable at dry otpimum compaction. Every frost damage in stabilization work was due to too wet or too early compaction to too early frost action. The application is discussed of the short-cut frost heave test to construction problems. The frost properties of cement stabilized base and subbase material damaged by flooding are outlined. It is pointed out that for dam building, for homogeneity of compacted density, for impermeability, compaction wet of Proctor optimum is prefered, as long as feasible. For road building with cement stabilized local materials as bases and subbases moisture contents dry of optimum are preferable in frost areas for specific frost resistance reasons.
- This paper was presented during the Symposium on Frost Action on Roads held in Oslo, Norway, 1-3 October, 1973.
Organisation for Economic Co-operation and Development (OECD)2, rue André Pascal
Paris, France 75775 Paris Cedex 16
- BALDUZZI, F
- This paper was presented during the Symposium on Frost Action on Roads.
- Location: Oslo , Norway
- Date: 1973-10-1 to 1973-10-3
- Publication Date: 1973
- Features: Figures; Photos; References;
- Pagination: p. 355-376
- Volume: 2
- TRT Terms: Calcium oxide; Cement; Climate; Compaction; Dams; Floods; Foundations; Freeze thaw durability; Frost heaving; Frost protection; Gravel; Homogeneity; Hydrology; Loss and damage; Moisture content; Sand; Soil stabilization; Subbase (Pavements); Testing
- Uncontrolled Terms: Stabilization; Subbase
- Old TRIS Terms: Freezing thawing effects; Frost heave
- ITRD Terms: 4758: Cement; 3686: Compaction; 4702: Curing (concrete); 2577: Freezing thawing cycle; 2585: Frost; 5278: Frost damage; 4575: Gravel; 6914: Insulation; 5920: Moisture content; 6285: Penetration; 9064: Quick; 2961: Roadbase; 3688: Roadbase stabilization; 6251: Sample (mater); 5928: Sensitivity; 4149: Silt; 5544: Strength (mater); 5203: Swelling (soil); 6255: Test; 5414: Time
- Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;
- Accession Number: 00260461
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: Conf Paper
- Files: ITRD, TRIS
- Created Date: Oct 11 1975 12:00AM