515.03 Penetrating Water Repellent Treatment
458 Table 514:3 Compensation Rate Per Splice Piling Size, in [mm] Rate Per Splice Steel H -Pile $500 Steel Pipe Pile $600 Concrete Pile Build -Up $850 When Temporary Sheet Piling is not specified for payment in the Plans, the Department will consider it incidental and will pay for it in other items of work. The Department considers preboring for Contractor convenience as inc idental to the cost of work, and will not measure it separately for payment. When preboring is required to encase the top 4 ft [1.2 M] of piling or when pilot holes are required, the Department will consider the cost of Excavation, Forms, Class A Concrete , sand fill (if used), and Welded Wire Fabric Reinforcing Steel for Steel Pile Encasements to be included in the contract unit price of PILES, DRIVEN.
515.01 Description
This work consists of treating concrete surfaces with a penetrating water repellent treatment solution.
515.02 Materials
Provide penetrating water repellent treatment solution in accordance with Subsection 701.12, “Penetrating Water Repellent for Treatment of Concrete Surfaces.”
515.03 Equipment
A.General Provide equipment in accordance with Subsection 108.06, “Methods and Eq uipment,” and the treatment solution manufacturer’s recommendations.
B.Surface Preparation Use at least one of the following types of equipment for surface preparation:
1.Sand -Blasting Provide a compressed air pressure sand -blaster to clean concrete sur faces as required by the Contract.
2.Shot -Blasting Provide a portable machine that uses a recyclable steel shot blast technique to clean horizontal concrete surfaces. PENETRATING WATER REPELLENT TREATMENT 515.04 459 (3) Hot Water Pressure Washers Provide a hot water pressure system that cleans concrete surfaces, as required by the Contract, with water at least 160 °F [70 °C] and a nozzle pressure of 2,500 psi [17 MPa].
4.Hydroblast Washer Provide a high pressure cold water washer unit using 7,000 psi [48 MPa] nozzle pressures to clean concrete surface s as required by the Contract.
5.Steam Cleaning Provide a steam jet that uses water 320 °F [160 °C] under an operating pressure of 300 psi [2 MPA] to prepare concrete surfaces as required by the Contract.
C.Application Provide low pressure airless spray equipment with an application pressure from 15 psi to 40 psi [100 kPa to 275 kPa].
515.04 Construction Methods
A.Treatment
1.General Do not apply penetrating water repellent treatment to prestress concrete surfaces, high density concrete overlays, or latex modified concrete overlays unless otherwise specified in the Contract documents . Employ personnel certified by the treatment solution manufacturer to clean the concrete surface and apply the penetrating water repellent solution. Follow the manufact urer’s recommendations for surface preparation and application. Before starting work, provide the Engineer with the following information: Treatment solution, including: brand name, manufacturer’s name, and a copy of the manufacturer’s unabridged applicat ion procedures, Equipment, Surface preparation methods, Application methods, Weather limitations, and Treatment solution manufacturer’s certified personnel
2.Surface Preparation Clean concrete surfaces before applying the penetrating water repellent treatment solution. Remove all foreign materials from the surface. The Department will allow the use of pretreatment cleaning agents before cleaning with water. Use solvents and hand tools to remove bonded materials, detrimental to concrete surface treat ment. The Department will allow the addition of detergents to cleaning water in proportions of 2 percent or less by weight to reduce the surface tension of the cleaning water.
515.04 Penetrating Water Repellent Treatment
460 Do not remove or alter the existing concrete surface finish, or expose the coars e aggregate during cleaning. Provide a uniform surface color. Remove excess moisture that may delay surface drying or inhibit surface penetration of the repellent treatment solution , after cleaning with water .
3.Application
a.Preapplication Requiremen ts Allow the concrete to cure for at least 28 days before applying surface treatment. After rain or water cleaning, allow concrete s urfaces to dry for at least 24 hr before applying penetrating water repellent treatment solution. For formed surfaces, app ly penetrating water repellent treatment after applying Class 1 through Class 6 concrete surface finishes, and before applying a Class 7 paint finish. Refer to Subsection 509.04.G, “Finishing Formed Concrete Surfaces ,” for definitions of surface finish classes. Clean contaminated concrete surfaces before applying the penetrating water repellent treatment.
b.Inspection Allow the Engineer to inspect the work at least 1 day before the application of penetrating water r epellent treatment. The Engineer will use the fugitive dye in the solution to gauge the uniformity of application. The Department will require re -treatment in areas with inadequate coverage.
c.Application Rate Use the penetrating water repellent treatm ent solution as supplied by the manufacturer. The Department will not allow dilution or alteration of the solution. Spray a flood coat of the solution onto concrete surfaces as required by the Contract. Adjust the application rate for vertical, tined, gr ooved or roughened surfaces.
d.Weather Limitations Apply the penetrating water repellent treatment solution in accordance with Table 515:1, "Acceptable Weather Conditions During Application," and the manufacturer’s recommen dations, whichever is more restrictive. Table 515:1 Acceptable Weather Conditions During Application Weather condition Acceptable range Temperature: air or concrete surface Above 40 °F [4 °C] and within the manufacturer’s recommended application temperature range Wind speed Below 25 mph [40 km/hr] Precipitation None PENETRATING WATER REPELLENT TREATMENT 515.04 461 (e) Seasonal Limitations Comply with the manufacturer’s seasonal limitations.
f.Traffic Keep traffic off treated surfaces until the solution dries.
B.Control of Materials Use penetrating water repellent treatment solution in unopened containers with numbered seals and the manufacturer’s label. Ensure the manufacturer marks the containers with the following information: Manufacturer’s name and address, Product name, Date of man ufacture, Expiration date, and Lot identification number. Protect materials in the original unopened containers in a storage facility that provides safe and secure storage.
C.Sampling and Testing of Bridge Decks and Approaches Determine the number and size of sample lots after treating as approved by the Engineer and the concrete surface treatment in accordance with the following: Determine the number of lots by dividing the surface area of the bridge deck and approach slabs (in square feet [square mete r]) by 20,000 ft² [1,850 m²]. Round to the nearest whole number, ensuring at least two lots per structure (bridge deck and approach slabs). Divide the surface area of the bridge deck and approach slab into lots of equal surface area. Ensure the width of ea ch lot equals the width of the deck or slab. Determine the length of each lot by dividing the surface area of the lot by its width. Take two core samples of treated concrete for testing from each lot of treated surface locations within the lot area selecte d randomly by the Engineer. Take additional samples as directed by the Engineer. Before coring, locate rebar in the bridge deck and approach slabs to avoid rebar during coring. Make the cores 4 in [100 mm] in diameter by 4 in [100 mm] in depth. Core the concrete in the Engineer’s presence and submit the cores to the Engineer. The Engineer will test the cores for moisture absorption and depth of treatment penetration in accordance with Subsection 701.12, “Penetrating W ater Repellent for Treatment of Concrete Surfaces.” The Engineer will evaluate bridge deck and approach slab treatment for acceptance and payment. Test the surface treatment independently with one core per lot to determine the adequacy of the work. The D epartment will not use these independent results for acceptance or payment.
515.04 Penetrating Water Repellent Treatment
462 D. Acceptance
1.Concrete Surfaces Other Than Bridge Deck and Approach Slabs The Department will base the acceptance of penetrating water repellent application for concrete surfac es other than bridge decks and approach slabs on two visu al inspections by the Engineer, once after surface preparation and once after treatment. The Engineer will accept surfaces cleaned and treated as required by the Contract.
2.Bridge Decks and Appro ach Slab Surfaces The Department will base the acceptance of penetrating water repellent application for bridge deck and approach slab treatment on absorption and penetration test results. Test at least 30 days after application. The Engineer will adjust payment for each lot by calculating a pay factor for absorption and penetration, and a combined pay factor.
a.Absorption Pay Factor The Engineer will determine the absorption pay factor for each lot using the following equations: If A ≤ 1.000 00.1aPF If 1.000 < A < 1.500 )0.1(00.1 A PFa If A ≥ 1.500 00.0aPF where aPF = Absorption pay factor, and A = Percentage of absorption using test results from OHD L39.
b.Penetration Pay Factor The Engineer will determine the penetration pay factor for each lot using the following equations: If D ≥ 0.25 in [6.3 mm] 05.1pPF If 0.15 in < D < 0.25 in )15.0 (5.000.1 D PFp [3.8 mm < D < 6.3 mm] )8.3 (02.000.1 D PFp If 0.05 in < D < 0.15 in 1.005.0DPFp [1.3 mm < D < 3.8 mm] 5.23.1DPFp If D ≤ 0.05 in [1.3 mm] 00.0pPF where PENETRATING WATER REPELLENT TREATMENT 515.06 pPF = Penetration pay factor, and D = Depth of penetration in inches [m illimeters] using test results from OHD L40.
c.Combined Pay Factor The Engineer will determine the combined pay factor for each lot using the following equation: P aPF PF PF where aPF = Absorption pay factor, pPF = Penetration pay factor, and PF = Combined pay factor The Engineer will multiply the contract unit price by the combined pay factor to determine payment for each lot. If the combined pay factor for any lot on a s tructure is less than 1.00, the Department will reduce the incentive portion (that in excess of 1.00) of the overall pay factors for all lots on the structure by 50 percent. In cases where there is a zero pay factor, reapply penetrating water repellent at no additional cost to the Department .
E.Core Hole Repair Repair core holes with a cement mortar consisting of portland cement, concrete sand, water, and acrylic polymer binder. Proportion the cement mortar in accordance with the manufacturer recommendat ions of the acrylic polymer binder. Submit mix design for approval by the Engineer. Place mortar the day the cores are taken. Treat the patch surface with treatment solution after curing.
515.05 Method of Measuremen T — Vacant
515.06 Basis of Payment
The Department will pay for each pay item at the contract unit price per the specified pay unit as follows: Pay Item: Pay Unit:
A.WATER REPELLENT (VISUALLY INSPECTED) Square Yard [Square Meter]
B.WATER REPELLENT (PERFORMANCE TESTED) Square Yard [Square Meter]
516.02 Drilled Shaft Founda Tions
464 SECTION 516 DRILLED SHAFT FOUNDATIONS
516.01 Description
This work consists of constructing drilled shafts and providing and placing reinforcing steel, concrete, and procedures for integrity testing of drilled shafts including remedial actions.
516.02 Materials
A.General Use materials in accordance with the following sections: Material: Section: Structural Concrete 509 Reinforcing Steel for Structures 511
B.Concrete Provide and modify Class AA concrete as follows: Limit the maximum aggregate size to ¾ in [19 mm], Ensure that water/cement ratio is 0.44 or lower, Use a High Range Water Reducing admixture to achieve 6 in to 8 in [150 mm to 200 mm] of slump at the placement start. Ensure at least 4 in [100 mm] of slump exists at the completion of placement and casing or reinforcement alignment, Maintain the concret e temperature below 85 °F [30 °C] during placement. For concrete placed under water or slurry, use cementitious material such as slag or fly ash (not cement) to increase the minimum cementitious content 10%, and Submit optional anti -washout additives to th e Engineer for approval
C.Casings Provide smooth, clean, watertight, steel casings for exterior casings that can withstand handling, driving, driving stresses, and pressures from the concrete and surrounding earth. Provide permanent casing with the dimen sions specified by the American Pipe Institute tolerances for regular steel pipe. If only a single casing is used in a shaft, the casing is considered an exterior casing. Use steel in accordance with AASHTO M 270 Grade 36 (ASTM A 709M Grade 250), unless o therwise specified by the Contract for permanent exterior casings. Weld permanent exterior casings in accordance with Section 506, “Structural Steel.” The Department defines permanent exterior casing diameters shown on the Plan s as outside diameters. Ensure that a Registered Professional Engineer in the State of Oklahoma stamps, designs, the design and submits calculations for when the Contract require s permanent exterior casings, or if electing to provide a permanent exterior c asing. Submit permanent casings and design calculations to the Engineer. Provide casing thicknesses not less than shown in Table 516:1.
Source: Oklahoma Standard Specifications for Highway Construction, 2019 Edition. Pages 472–477 of 935.