A. 
Cement. Cement used in concrete structures shall conform to the following requirements of the ASTM, as amended to date:
(1) 
Standard portland cement;
(2) 
ASTM Designation C-150, Type 1;
(3) 
High-early-strength portland cement;
(4) 
ASTM Designation C-150, Type 3;
(5) 
Air-entraining portland cement;
(6) 
ASTM Designation C-175, Type 1-A;
(7) 
Air-entraining agent shall be Vinsol® resin or Darex® AEA.
B. 
Aggregate. Aggregate, both fine and coarse, shall conform to the requirements therefor of the New Jersey State Highway Department Standard Specifications, as amended and revised to date.
C. 
Water. Water shall be clean, fresh and free of oils, acids, salts, organic matter or other injurious substances.
D. 
Air-entrained concrete. Unless otherwise provided, all concrete shall be air-entrained having 4% to 7% of entrained air, and shall be produced by using standard portland cement with additive or air-entraining portland cement with or without additional additive as required.
E. 
Reinforcing steel. Reinforcing steel shall be intermediate grade deformed bars conforming to ASTM Designation A-15 and ASTM Designation A-432, as amended and revised to date. (Prior code § 15.134.1)
Only enough water shall be added to make concrete workable for its intended use. The engineer will determine the slump ranges within which the contractor must work. Ready-mix or transit mix concrete may be used if obtained from sources approved by the engineer. Equipment used to proportion and mix concrete on the job is subject to the approval of the engineer.
A. 
Forms shall conform to the shape, lines, dimensions and grades shown on the plans. They shall be firmly braced, tight, and substantial so as to prevent movement, bulging, and mortar leakage. Wherever concrete will be exposed to view, forms shall be smooth and clean.
B. 
Forms for footings may be omitted wherever soil and workmanship permit accurate excavation to size. All forms shall be completely removed.
Reinforcements shall be accurately cut, bent and placed in accordance with the plans. It shall be free of excessive scale or any foreign material that would tend to reduce bond. It shall be securely supported, tied and fastened to prevent movement while concrete is being placed.
Subgrades, excavations, and soil bases for foundations and slabs shall be properly finished to the prescribed lines, grades and dimensions, and shall be approved by the engineer before concrete is placed. All areas to receive concrete shall be free of frost, foreign matter and excessive water; provided, however, that forms and soil surfaces shall be uniformly damp when the concrete is placed.
Concrete shall be handled and placed so as to avoid any segregation. Concrete which has begun to set or which has been contaminated with foreign materials or to which too much water has been added shall not be used. Pouring of concrete shall generally be a continuous operation until the placing of an individual section has been completed. Concrete shall be thoroughly compacted with vibrators or by other suitable means.
A. 
All concrete shall be finished by screeding and floating to the required lines and grades. Unless otherwise specified, all work shall have a wood float finish; provided, however, that the contractor shall provide other finishes when so required by the place or specifications or so directed by the engineer.
B. 
After the concrete has been poured, it shall be kept continuously wet for a period of one day or longer, as directed by the engineer. Curing compound may be substituted for water, but in all cases, curing shall be in accordance with Article 4.1.3 of the New Jersey State Highway Department Standard Specifications.
Expansion joints, dummy joints, construction joints and other appurtenances shall be provided as shown on the standard details. Expansion joints shall have joint filler of the thickness indicated which shall extend the full depth of the concrete.
After removal of forms, all permanently exposed surfaces shall be cleaned of stains and dirt, and all surface defects which do not impair structural strength shall be repaired by cutting and patching.
Concrete shall not be poured when the atmospheric temperature is below 40° F. or when there is any precipitation, unless precautions satisfactory to the engineer have been taken to prevent any damage to the work. Precautions necessary to avoid freezing of the concrete shall be in accordance with the current recommendations of the American Concrete Institute.