310.01 259 SECTION 310 – CONDITIONING MINERAL AGGREGATE BASE
310.01 Description ................................ ................................ ................... 259
310.02 Materials ................................ ................................ ...................... 259
310.03 Equipment ................................ ................................ .................... 259
310.04 Conditioning ................................ ................................ ................ 260
310.05 Surface Requirements ................................ ................................ .. 260
310.06 Method of Measurement ................................ .............................. 260
310.07 Basis of Pay ment ................................ ................................ .......... 261
DESCRIPTION
310.01 Description
This work consists of reshaping and compacting an existing mineral aggregate base or surface. MATERIA LS
310.02 Materials
Provide materials as specified in: Aggregate for Conditioning Base ................................ .......... 903.05 Calcium Chloride, Type 1, Type 2 or Calcium Chloride Liquor ................................ ................ 921.02 EQUIPMENT
310.03 Equipment
Provide motor graders and water distributors in the number necessary for satisfactory prosecution and completion of the work, as well as one or more rollers of a type and sufficient weight to obtain the required density and to seal the surface of the base course. 310.04 260 CONSTRUCTION REQUIREMENTS
310.04 Conditioning
Condition the existing base by applying water, blading, and compacting as directed by the Engineer. Scarify sections of existing base that are pot -holed to the full depth of the potholes. Scarify and shape warped and distorted sections as directed by the Engineer. Moisten the material as necessary, and mix, shape, and roll until the base is uniformly and thoroughly compacted. Continue applying water, blading, and rolling until a smooth, dense, well - bonded surface is obtained that meets the Engineer’s approval. The Department will divide the completed base into lots of approximate ly 10,000 square yards for density testing purposes, and will perform five density tests in each lot. The average dry density shall be not less than 100% of maximum density as determined according to AASHT O T 99 Method D, and no individual test shall be less than 97% of maximum density . Smaller lots may be considered when approved or directed by the Engineer. Distribute calcium chloride, when specified, at the a pproximate rate of 1 pound per square yard and incorporate it in the base material during blading and rolling operations as directed by the Engineer. If additional material is to be added to the existing base, lightly scarify the existing base, add the mat erial, and condition the base as specified above.
310.05 Surface Requirements
The surface of the conditioned base shall be in reasonably close conformity with the lines, grades, and cross -sections shown on the Plans or as directed by the Engineer and shall provide a satisfactory riding surface . COMPENSATION
310.06 Method of Measurement
The Department will measure:
1.Conditioning Mineral Aggregate Base by the linear mile, based on a horizontal measurement made along the median centerline of the Project for divided sections and along the centerline of the pavement for two-lane sections, excluding bridges. 310.07 261 2. Calcium Chloride by the ton in accordance with 303.14.D.
3.Water by M.G. (1,000 gallons) using calibrated tanks or distributors, or accurate water meters. If the Contract requires the construction of a mineral aggregate base and a surface course, the Department will not directly measure or pay for conditioning of the base but will consider this work to be incidental to the unit price bid for the base material. If the Contract requires the addition of base material to sections or the entire length of a previously constructed base, the Department will not directly measure or pay for conditioning of the base on the section s where base material is added. Sections where base material is not added will be measured for payment by the linear mile. If the Contract requires a surface to be constructed on a previously constructed base and no additional material is added to the base, the Department will measure and pay for conditioning of the base by the linear mile.
310.07 Basis of Payment
The Department will pay for accepted quantities at the contract prices as follows: Item Pay Unit Conditioning Mineral Aggregate Base Linear Mile Calcium Chloride Ton Water MG Payment for Conditioning Mineral Aggregate Base is full compensation for conditioning all base on interchanges, approaches, service roads, ramps, frontage roads, roadside rest areas, and all other base within the limits o f the Project that requires conditioning to receive a succeeding stage of construction under the Contract. 312.01 262 SECTION 312 – AGGREGATE -LIME-FLY ASH STABILIZED BASE COURSE
312.01 Des cription ................................ ................................ ................... 262
312.02 Materials ................................ ................................ ...................... 262
312.03 Proportioning ................................ ................................ ............... 263
312.04 Equipment ................................ ................................ .................... 264
312.05 Limitations ................................ ................................ ................... 266
312.06 Subg rade Preparation ................................ ................................ ... 266
312.07 Mixing ................................ ................................ .......................... 266
312.08 Spreading ................................ ................................ ..................... 267
312.09 Compaction ................................ ................................ .................. 267
312.10 Finishing ................................ ................................ ...................... 267
312.11 Constr uction Joints ................................ ................................ ....... 268
312.12 Thickness and Surface Requirements ................................ ........... 268
312.13 Curing ................................ ................................ .......................... 268
312.14 Traffic and Maintenance ................................ .............................. 268
312.15 Method of Measurement ................................ .............................. 268
312.16 Basis of Payment ................................ ................................ .......... 269
DESCRIPTION
312.01 Description
This work consists of constructing a base of mineral aggregate, hydrated lime, and fly ash . MATERIALS
312.02 Materials
Provide materials as specified in: Crushed Limestone Aggregate Type A, Grading C ............... 903.05 Bituminous Material for Curing Emulsified Asphalt, Types allowed for Tack Coat in 403 ............................... 904.03
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 268–270 of 1,072.