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Brick shall be clay or shale and shall meet the requirements of ASTM C62 for Grade SW, except as otherwise provided below.
Brick shall be of uniform standard commercial size, with straight and parallel edges and square corners. They shall be burned hard and entirely true, free from injurious cracks and flaws, tough, strong, and shall have a clear ring when struck together. The sides, ends, and faces of all brick shall be plane surfaces at right angles and parallel one to the other.
Brick of the same manufacturer shall not vary more than plus or minus 1/16 of an inch in thickness, plus or minus 1/8 of an inch in width, and plus or minus 1/4 of an inch in length.
Concrete brick may be used in lieu of clay or shale brick when so designated on the plans or in the special provisions. Concrete brick shall meet the requirements of ASTM C55 for Grade S-II except that the absorption of brick used in minor drainage structures shall not exceed 10 lbs./ft.3.
1040-2 CONCRETE BUILDING BLOCK.
Concrete building block shall meet the requirements of ASTM C90 for Type II. Blocks shall be gray in color and shall be substantially free from chips and cracks.
Solid concrete block to be used in lieu of clay brick for minor drainage structures shall meet the requirements of ASTM C139 except that the nominal dimensions shall be 4" x 8" x 16".
Concrete block for block manholes shall meet the requirements of ASTM C139.
Concrete paving block shall be solid concrete block and shall meet the requirements of ASTM C139 except that the nominal dimensions shall be 4" x 8" x 16". The block shall have a uniform surface color and texture.
Portland cement shall meet the requirements of Article 10241.
Masonry cement shall meet the requirements of ASTM C91.
Hydrated lime shall meet the requirements of ASTM C207 for Type N.
Mortar sand shall meet the requirements of Article 10141, except that it shall meet the gradation requirements for No. 4S sand as shown in Table 10052.
Water shall meet the requirements of Article 10244.
Mortar used in all brick masonry and block masonry shall be proportioned as shown below for either mix No. 1 or No. 2. All proportions are by volume. No more water shall be added than is necessary to make a workable mixture.
Mix No. 1: 1 part portland cement
1/4 part hydrated lime
3 3/4 parts mortar sand (maximum)
Mix No. 2: 1 part portland cement
1 part masonry cement
6 parts mortar sand (maximum)
The provisions of Articles 10404, 10405, 10406, and 10407, shall be applicable to all cement, hydrated lime, mortar sand, and water.
The Contractor may substitute Type M or Type S masonry cement meeting the requirements of ASTM C270 for the hydrated lime and cement portion of Mix No. 1, except that for Type S masonry cement the minimum compressive strength of the test specimens shall be 2500 psi at 28 days and the test specimens shall be composed of 1 part Type S masonry cement and 3 parts sand. The Contractor shall furnished a Type 3 certification certifying that the Type M or Type S masonry cement meets these specifications.
1040-9 GROUT FOR SLOPE PROTECTION PAVING.
Grout for slope protection paving shall be a mixture of 1 part portland cement to 3 parts of mortar sand with no more water added than is necessary to make a workable mixture.
The provisions of Article 10404, 10406,
and 10407 shall be applicable to all cement, mortar
sand, and water.