912.01 974 SECTION 912 – BRICK
912.01 Building Brick ................................ ................................ .............. 974
912.02 Sewer Brick ................................ ................................ .................. 974
912.03 Masonry Mortar ................................ ................................ ........... 974
912.04 Concrete Masonry Units ................................ .............................. 975
912.05 Brick Paving Units ................................ ................................ ...... 975
912.01 Building Brick
Provide brick of the kind and grade specified.
A.Clay or Shale Brick Provide brick conforming to ASTM C62.
B.Concrete Brick Provide brick conforming to ASTM C55.
912.02 Sewer Brick
Provide brick conforming to ASTM C32.
912.03 Masonry Mortar
Compose mortar of one part Portland cement and two parts sand. The Contractor may add hydrated lime to the Portland cement in an amount not to exceed 10%. Add wate r to the mixture in quantities that will allow a stiff paste to form. Either hand -mix or machine -mix the mortar. To prepare hand -mixed mortar, thoroughly mix the sand, cement, and hydrated lime together in a clean, tight, mortar box. Once the mixture is of uniform color, add water. Prepare machine-mixed mortar in an approved mixer and mix not less than 1-1/2 minutes. Use mortar within 30 minutes after mixing. Do not retemper mortar. 912.04 975 Use materials conforming to the following: Cement ................................ ................................ ................... 901.01 Hydrated Lime ................................ ............................. ASTM C207 Sand ................................ ................................ ....................... 903.02 Water ................................ ................................ ..................... 921.01
912.04 Concrete Masonry Units
Provide concrete masonry units conforming to the types, sizes, and dimensions shown on the Plans, and meeting the fo llowing requirements, unless otherwise specified:
1.Hollow load -bearing masonry units: ASTM C90, Grade 5, Type II.
2.Hollow non -load-bearing masonry units: ASTM C129, Type II. Furnish the Department representative samples of the masonry units for testing.
912.05 Brick Paving Units
Provide brick of the kind and grade specified.
A.Masonry Brick
1.Sidewalk: ASTM C902, Class SX, Type 1
2.Crosswalks and Roadway: ASTM C1272, Type R
B.Concrete Brick and Truncated Dome Concrete Brick Provide brick conforming to ASTM C 936
C.Truncated Dome Brick Provide brick conforming to ASTM C902, Class SX, Type 1 913.01 976 SECTION 913 – CEMENT CONCRETE CURING MATERIALS
913.01 Water ................................ ................................ ............................ 976
913.02 Reserved ................................ ................................ ....................... 976
913.03 Reserved ................................ ................................ ....................... 976
913.04 Burlap ................................ ................................ ........................... 976
913.05 Liquid Membrane -Forming Compounds ................................ ...... 976
913.06 Sheeting Material for Curing Concrete ................................ ........ 976
913.01 Water
For use in curing Portland cement concrete, provide water that is free from all substances that may damage the concrete when applied on the surface as a curing agent.
913.02 Reserved
913.03 Reserved
913.04 Burlap
Provide burlap conforming to AASHTO M 182, Class 3 or Class 4. If Class 1 or Class 2 burlap is allowed, use at least two layers.
913.05 Liquid Membrane -Forming Compounds
Provide compounds listed on the Department’s QPL for Coatings for Concrete and conforming to ASTM C309, and use as follows:
1.Where applied texture finish is specified, use a Type 1 -D, Class B, membrane that is compatible with the texture finish.
2.Use either a Type 2 membrane or Type 1 -D, Class B, membrane on bridge decks when a pplied in combination with the water method of curing.
3.Use Type 2 membrane in all other applications.
913.06 Sheeting Material for Curing Concrete
Provide material conforming to the water vapor transmission rates specified in ASTM C171.
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 983–984 of 1,072.