Specs

Bridgestone Retail Operations, LLC
PROJECT MANUAL
Version: January 2012
SECTION 02245
LIME STABILIZED SUB-GRADE
PART 1 GENERAL
1.01 GENERAL REQUIREMENTS
A. This specification shall govern for all work necessary to provide the lime slurry
treatment for the subgrade when required by the drawings. Application of dry lime
shall not be allowed. This specification is a performance specification and the
performance of the completed work is the responsibility of the Contractor.
PART 2 PRODUCETS / MATERIAL
2.01 HYDRATED LIME:
2.02 WATER:
A. Hydrated lime shall be a standard brand conforming to the requirements of Item 264,
Type A, of the Texas Highway Department Standard Specifications.
A. Water shall be clean and free from injurious amounts of oil, acid, salt, alkali, organic
matter and other substances deleterious to the lime or lime-base mixture.
2.03 LIME SLURRY:
A. Lime slurry shall conform to the requirements of Item 264, Type B, Grade 2 of the
Texas Highway Department Standard Specification.
PART 3 EXECUTION
3.01 EQUIPMENT
A. Any combination of equipment may be used that will produce a uniform lime subgrade
mixture, free from loose or segregated areas and of uniform density and moisture.
B. Tamping rollers
1. Tamping rollers, sheeps foot type, shall consist of one or more units.
2. Each unit shall consist of watertight cylindrical drum not less than 60 inches
in length, surrounded by metal studs with tamping feet projecting not less
than 7 inches from the surface of the drum and spaced not less than 6
inches nor more than 10 inches apart, measured diagonally from center to
center.
3. The tamping feet shall be an approved type suitable for compacting
subgrade courses. Each unit shall be equipped with a suitable device for
cleaning the tamping feet.
4. The rolling units of multiple-type tamping rollers shall be pivoted on the main
frame in a manner that will permit the units to adapt themselves to uneven
ground surface and to rotate independently.
5. When fully loaded, the rollers shall produce a pressure of at least 750 pounds
per square inch on the combined areas of the tamping feet in contact with the
ground.
LIME STABILIZED SUBGRADE 02245 – Page 1 of 4