1.1 SECTION INCLUDES Subject to the requirements of the General and Special Conditions, this Section includes; the stabilization of sub-grade for pavements or railroads by the pulverization, addition of lime, mixing and compacting the mixed material to the required density. This item applies to natural ground, embankment, or existing pavement structures as described and specified herein and as shown on the Drawings. 1.2 RELATED SECTIONS SECTION 01 22 10.00 Std - Measurement of Quantities SECTION 31 23 00.00 Std - Excavation and Fill 1.3 REFERENCES A. ASTM International Publications, latest editions: ASTM D-698 Standard Test Methods for Laboratory Compaction of Soil using Standard Effort ASTM D 2922 Standard Test Methods for Density of Soil and Soil Aggregate in Place by Nuclear Methods B. Texas Department of Transportation Test Procedures, latest editions: Test Method Tex-600-J Sampling and Testing Lime Test Method Tex-120-E Soil-Lime Testing Test Method Tex-121-E Soil-Lime Testing Test Method Tex-128-E Determining Soil pH 1.3 SUBMITTALS A. Product Data: Test Reports and Certification from the Manufacturer that Lime meets this Section. B. Equipment List C. Manufacturer Details 1.4 HANDLING AND STORAGE Lime shall be stored and handled in closed weatherproof containers until immediately before distribution on the road. If storage bins are used, they shall be completely enclosed. If Lime is furnished in trucks, each truck shall have a weigh ticket from a certified scale. If Lime is furnished in bags, each bag shall bear the manufacturer’s certified weight. Bags varying more 5 percent from that weight may be rejected. PART 2 PRODUCTS 2.1 MATERIALS The following specifications establish the requirements for commercial lime slurry of the type and grade considered suitable for use in the stabilization of sub-grade. A. Commercial Lime Slurry: This material shall be a pumpable suspension of solids in water. The water or liquid portion of the slurry shall not contain dissolved material in sufficient quantity and/or nature injurious or objectionable for the purpose intended. The solids portion of the mixture, when considered on the basis of "solids content", shall consist principally of hydrated lime of a quality and fineness sufficient to meet the following requirements as to chemical composition and residue. 1. Chemical Composition: The "solids content" of the lime slurry shall have a hydrate alkalinity Ca(OH) of not less than 90 percent by weight. Provide lime with no magnesium hydroxide. 2 2. Residue: The percent by weight of residue retained in the "solids content" of lime slurry shall conform to the following requirements: Residue retained on a No. 6 (3360-micron) sieve.......Max. 0.0 percent Residue retained on a No. 10 (2000-micron) sieve…...Max. 1.0 percent Residue retained on a No. 30 ( 590-micron) sieve…….Max. 2.5 percent Commercial Lime Slurry shall conform to one of the following two grades: Grade 1: The "Dry Solids Contents" shall be at least 31 percent by weight of the slurry. Grade 2: The "Dry Solids Contents" shall be at least 35 percent by weight of the slurry.
