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Edition:Interim report I.
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Abstract:Shrinkage cracks in cement-stabilized bases/subbase can be alleviated by specifying the right cement dosage, or by other additives/procedures that suppress crack susceptibility. A field trial of six 1000 ft test sections to investigate several alternative techniques was initiated and constructed in August 2000. The following additives/procedures are included for investigation:
5.5% cement additive control; design based on a reduced strength criteria,
5.5% cement precracked while “young”,
5.5% cement precut (grooved) every 3m (10 ft),
3.5% cement with 8% fly ash,
Ground granulated blast furnace slag (GGBFS) complemented by 2% lime.
Three percent lime and 12% fly ash, the current favored stabilization technique of MDOT.
This interim report covers the tests and results conducted in three stages:
Mixture design, Construction monitoring, Post-construction evaluation.
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