POST-INSTALLED ANCHOR SYSTEMS FOR STRUCTURAL APPLICATIONS IN CONCRETE ELEMENTS
937-1 General .
Post-installed anchor systems intended for structural applications in concrete elements consist of adhesive-bonded anchor systems.
937-2 Approved Product List ( APL).
Manufacturers of post -installed anchor systems may apply for inclusion of individual products on the Department’s Approved Product List (APL). The application shall be made in accordance with Section 6 and shall include certified test reports from an independent testing laboratory which shows the material system meets all the requirements of t his Section.
937-3 Certification.
The Contractor shall provide the Engineer with certification from the manufacturer of the anchor system, confirming that the requirements of this Section are met. The certification shall conform to the requirements of Sec tion 6. Each certification shall cover only one LOT of anchoring materials.
937-4 Adhesive Bonding Material Systems .
937-4.1 General: Adhesive bonding material systems for structural applications shall
consist of pre -packaged , 2-part chemical components. The material systems shall be specifically intended for use in structural applications for bonding anchors and dowels to hardened concrete. Applications are limited to anchors and dowels installed in positions ranging from vertically downward to horizontal . Do not use material from containers which are damaged or have been previously opened. Use only full packages of components. Combining of adhesive bonding components from bulk supplies is not permitted. Material systems shall be pre -packaged to automa tically proportion and mix the materials for use. Manual proportioning of the components will not be permitted.
937-4.2 Minimum Performance Requirements (FM 5-568): When tested in
accordance with FM 5-568, the adhesive bonding material system, for general use, shall meet the following requirements: Table 937-1 Uniform Bond Stress Type HV Type HSHV Confined Tension 2,290 psi 3,060 psi Damp-Hole Installation 1,680 psi 1,830 psi Elevated Temperature 2,290 psi 3,060 psi Horizontal Orientation 2,060 psi 2,060 psi Short Term Cure 1,710 psi 1,710 psi Specified Bond Strength 1,080 psi 1,830 psi Maximum Coefficient of Variation for Uniform Bond Stress : 20%. FY 2023-24 Return to Table of Contents Long Term Load (Creep):
1.The rate of displacement shall decrease during the 42 day application of load.
2.At 42 days, the total displacement due to creep (with load still applied) shall be less than 0.03 inches and during the last 14 days of the 42 day load duration, the total displacement due to creep shall be less than 0.003 inches.
3.After removal of the 42 day load, the uniform bond Stress from a subsequent Confined Tension Test shall not be less than 1,826 psi.
937-4.3 Product Identification (Fingerprint) Properties (FM 5-569): References for
comparison including infrared absorption, density or average weight, gel time or setting time, and bond strength shall be determined in accordance with FM 5-569.
937-4.4 Packaging and Marking: The adhesive bonding material system shall be
delivered to the project site in original unopened containers with the manufacturer’s label identifying the product. Each package shall be clearly marked with the following information: Manufacturer’s name and address Product Name Date of Manufacture Expiration Date LOT Identification Number Storage and Hand ling Requirements Each package shall include the manufacturer’s instructions for anchor and dowel installation. The instructions shall include the following information: Diameters of drilled holes for applicable anchor and dowel sizes. Cleaning pro cedure for drilled holes, including a description of permitted and prohibited equipment and techniques. Allowable temperature ranges for storage, installation and curing. Identification of acceptable mixing/dispensing nozzles. Fabrication requirem ents for anchors and dowels. Description of tools permitted or required for installation. Method of identifying properly proportioned and mixed adhesive materials. Time and temperature schedule for initial set and full -strength cure. Special re quirements for special installation conditions such as damp holes, or horizontal or near horizontal orientation of the anchor or dowel. FY 2023-24 Return to Table of Contents SECTION 938 DUCT FILLER FOR POST-TENSION ED STRUCTURES
938-1 Description.
This Section covers filler materials used to fill voided areas within ducts to protect post - tensioning steel. Grout applications are differentiated into three applications: horizontal, vertical and repair. There is no differentiation for flexible fillers.
938-2 Approved Product List.
Only post -tensioning grouts and flexible filler material listed on the Department’s Approved Product List (APL) shall be used. Ma nufacturers seeking evaluation of their product shall submit an application in accordance with Section 6 and include certified test reports from an independent AASHTO R18 or ISO 9001 approved laboratory showing that the material meets all the requirements specified herein. A written certification from the manufacturer that the product meets the requirements of this Section must be submitted. Any change of materials or material sources requires new testing and certification of the conformance of the grout w ith this Specification. Grout products will be qualified by application (horizontal, vertical or repair).
938-3 General Requirements.
938-3.1 Grout: Grouts shall exhibit thixotropic properties and shall be prepackaged in
clearly labeled moisture proof co ntainers. The containers shall indicate application type, date of manufacture, LOT number and mixing instructions. The manufacturer’s Quality Control Data Sheet for each lot number and shipment sent to the job site shall be provided to the Contractor and submitted to the Engineer.
938-3.2 Flexible Filler - Microcrystalline Wax: The flexible filler shall be a petroleum
based microcrystalline wax delivered to the project site in clearly labeled prepackaged containers and stored in accordance with the manufac turer’s recommendations as applicable for the particular project. The manufacturer’s Quality Control Data Sheet for each shipment sent to the job site shall be provided to the Contractor and submitted to the Engineer.
938-4 Grout.
938-4.1 Mixing: The material shall be mixed in accordance with the manufacturer’s
recommendations except when additional water is indicated for particular tests .
938-4.2 Grout Physical Properties:
938-4.2 1 Gas Generation: The grout shall not contain aluminum or other
components which produce hydrogen, carbon dioxide or oxygen gas.
938-4.2 2 Laboratory Testing: The grout shall meet or exceed the specified
physical properties stated herein as determined by the following standard and modified ASTM and FM test methods co nducted at normal laboratory temperature (65°F -90°F) and conditions. Prepare all laboratory test specimens using 110 percent of the maximum water allowed by the manufacturer unless otherwise noted in Table 938-1. Tests A, B, N, and O will be conducted by the Department. FY 2023-24 Return to Table of Contents
Source: Florida Standard Specifications for Road and Bridge Construction, 2024 Edition. Pages 1063–1064 of 1,299.