SECTION 582 - REMOVAL AND REPLACEMENT OF STRUCTURAL CONCRETE (Last Revised September, 2025)
582-1 DESCRIPTION. The work shall consist of the removal and disposal of unsound structural
concrete from an existing structure and its replacement with new Performance Engineered Mixture (PEM) Portland Cement Concrete or an approved patching material, as indicated on the contract plans, or as ordered by the Engineer. All work shall be done at the locations indicated on the contract plans, or where ordered by the Engineer. All miscellaneous materials, not including bar reinforcement, encountered during the removal of unsound structural concrete, shall be removed, and disposed of unless otherwise indicated on the contract plans, or ordered by the Engineer.
582-2 MATERIALS. Materials used in this work shall conform to the following requirements:
Vertical and Overhead Patching Material 701-08 Water 712-01 Quilted Covers (for curing) 711-02 Plastic Coated Fiber Blankets (for curing) 711-03 Membrane Curing Compound 711-05 Admixtures 711-08
582-2.01 Replacement Concrete. Concrete shall conform to the requirements of §501- Portland Cement
Concrete Production and the appropriate mix design requirements specified in Table 2 of Materials Procedure (MP) 501-2 Mix Design and Approval Procedure for Performance Engineered Mixtures – Structural Concrete.
582-2.02 Vertical and Overhead Patching Material. The patching material used shall be a brand that
appears on the Department's Approved List.
582-3 Construction Details
582-3.01 Repair Determinations. The choice of replacement material will be indicated on the plans,
determined by the Engineer, or determined by the Contractor. The Contractor's determinations shall be made in accordance with the criteria of this subsection, and only in the absence of directions from the plans, or the Engineer. The Contractor's determinations shall be approved by the Engineer prior to the actual performance of the work.
A.Horizontal or Essentially Horizontal Locations. Concrete shall be in accordance with Table 2 of MP 501-2 with the maximum aggregate size meeting the requirements of MP 501-2, 3 B.
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 2026 Volume 2 Maximum Aggregate Size. Average depth shall be determined by a measurement procedure acceptable to the Engineer.
B.Vertical or Essentially Vertical Locations. Concrete shall be in accordance with Table 2 of MP 501-2 with the maximum aggregate size meeting the requirements of MP 501-2, 3 B. Maximum Aggregate Size. or approved patching material may be used. Patching material shall be placed at locations where removal depths average between 1/2 and 1 1/2 inches. Average depths shall be determined by a measurement procedure acceptable to the Engineer.
C.Overhead. Concrete shall be in accordance with Table 2 of MP 501-2, with the maximum aggregate size meeting the requirements of MP 501-2, 3 B. Maximum Aggregate Size for the depth of repair or approved patching material shall be used when formwork is provided. Approved patching material may be used without formwork provided lift thicknesses do not exceed 1inch. Anchoring devices shall be used when patching material is used for repair depths of 1½ inches or greater.
D.Pockets. Locations, within locations of 1 1/2 inches in average depth or less, which exceed this average depth, shall be filled with concrete in accordance with the limitations outlined under horizontal locations.
582-3.02 Removal of Unsound Concrete. All unsound concrete shall be removed to a sound surface as
determined by the Engineer. If called for on the plans, the existing concrete shall be saw-cut to obtain a straight joint between the existing concrete and the new material. Care shall be exercised while removing the unsound concrete so as not to damage materials which are to remain in place. Exposed reinforcement remaining in place shall be cleaned in accordance with the requirements of §584-3.02A. Chipping hammers shall meet the requirements of §580-3.02.
A.Removal for Concrete Replacement. The minimum depth of removal shall be the greater of the following: • A depth no less than 1 1/2 inches from the rear most point of reinforcement to sound concrete. • The depth necessary to reach sound concrete. Should the removal depth exceed 6 inches, the Engineer may order supplementary anchoring as part of the replacement procedure. The sides of the cavity shall be made at a slight angle, so that the width of the base of the cavity is greater than the opening at the surface, thereby providing a key.
B.Removal for Patching Material Replacement. Feather edges shall not be permitted. The minimum patch depth shall be 1/2 inch as measured from the theoretical plane of the original concrete surface.
582-3.03 Preparation of Surface
A.All surfaces receiving new material shall be blast cleaned in accordance with the requirements of §584-3.02.
B.Bar reinforcement shall be placed at the location indicated on the plans, and at all additional locations determined by the Engineer.
C.Existing reinforcement, which, in the Engineer's opinion, has lost significant section, shall be repaired in a manner satisfactory to the Engineer.
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D.Bar placement, and bar repair work directed by the Engineer will be paid for separately.
582-3.04 Placement. Air clean the surface with oil-free compressed air. After the surface preparation has
been accepted, every effort should be made to thoroughly wet the concrete surface, and all porous surfaces to be in contact with new concrete, for 12 hours. This may be accomplished by continuous wetting with soaker hoses or the use of burlap/burlene/etc. where moisture can be maintained. If, in the opinion of the Engineer, conditions or the situation prohibits this, then the surfaces should be wetted for as long as possible. Surfaces must be wetted by a means acceptable to the Engineer using potable water. The Contractor shall remove any puddles of free standing water with oil-free compressed air, and protect the surfaces from drying, so the existing concrete remains in a clean, saturated surface dry condition until placement of the new concrete. No material shall be placed if the ambient air, or concrete surface temperature is at, or below 45oF.
A.Concrete Placement. All concrete placements shall be in accordance with the applicable requirements of the following subsections: 555-3.02, 555-3.03A, 555-3.04, 555-3.06, 555- 3.07, 555-3.08.
B.Vertical and Overhead Patching Material Placement. Patching material shall be prepared in accordance with the directions provided by the manufacturer. The Engineer shall be given two copies of the manufacturer's printed instruction at least two weeks prior to the start of all patching work. This shall include the mixing proportions and the mixing method. The manufacturer's literature shall be consulted for surface preparation and priming instructions. The material shall be troweled on in layers, the thickness of which depends on the material consistency and the location and profile of the surface to which it is applied. However, lift thickness in excess of 1 inch will not be permitted without the use of anchoring devices or formwork at overhead locations. Special curing procedures are generally not required, except under conditions of high heat, low humidity, or strong winds, as defined by the manufacturer. The manufacturer should be consulted for specific curing procedures under these adverse conditions.
582-3.05 Form Removal. Form removal shall be in accordance with §555-3.09 with the following
exception: Forms shall be removed from thin concrete placements 24 curing hours after placement has been completed unless the Engineer determines the concrete is not strong enough to withstand damage. For purposes of this subsection, a thin concrete placement begins at the outermost surface of the new concrete and generally terminates at, or before, the midpoint of the main reinforcing steel. Concrete may be removed and replaced completely around one or two main reinforcing steel members to a depth no greater than 1 inch from the innermost surface of those members and still be considered a thin concrete placement. Main reinforcing steel members include reinforcing bars, but not spiral reinforcement or stirrups. Curing procedures shall be implemented immediately upon form removal.
582-3.06 Curing. Curing shall be performed according to the following:
A.Concrete. This shall be done in accordance with §555-3.08.
B.Vertical and Overhead Patching Material Curing. Manufacturer's recommendations for curing shall be followed for the patching material applications.
582-4 Method of Measurement
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 2026 Volume 2
582-4.01 Removal and Replacement of Structural Concrete. Measurement shall be made as either the
number of cubic yards of concrete placed, or the number of square feet repaired as indicated on the contract plans, or where ordered or approved by the Engineer. No reductions in area will be made around corners.
582-4.02 Removal of Structural Concrete - Replacement with Vertical and Overhead Patching
Material. Measurement shall be made as the number of square feet of the plane projection of the repaired area as indicated on the contract plans, or where ordered or approved by the Engineer. Measurement shall be made prior to the placement of patching material.
582-5 Basis of Payment
582-5.01 Removal and Replacement of Structural Concrete. The unit price bid per cubic yard or per
square foot area shall include the cost of furnishing all labor, materials and equipment necessary to complete the work, except that bar reinforcement removal and replacement shall be paid for separately. Progress payments will be made in accordance with §582-5.03.
582-5.02 Removal of Structural Concrete - Replacement with Vertical and Overhead Patching
Material. The unit price bid per square foot shall include all labor, materials and equipment necessary to complete the work. Progress payments will be made in accordance with §582-5.03.
582-5.03 Progress Payments. Progress payments will be made when the concrete removal is completed.
Payment will be made at the unit price bid for 50% of the quantity removed. The balance of the quantity will be paid upon completion of the work. Payment will be made under: Item No. Item Pay Unit 582.0051 Removal and Replacement of Structural Concrete Cubic Yard 582.0052 Removal and Replacement of Structural Concrete Square Foot 582.0061 Removal of Structural Concrete- Replacement with Vertical and Overhead Patching Material Square Foot
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Source: Standard Specifications (US Customary Units), 2026 (Jan) Edition. Pages 627–630 of 1,489. View official source ↗