AC•TechAC•Tech 2170™ FC

Allied Construction Technologies, Inc.

AC•Tech2170™ FC SPECIFICATION: Division 9

Section 09699(OR)09 05 61.13

Water Vapor Emission Control Systems

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings, documents, and general provisions of the Contract, including, but not necessarily limited to, General Conditions and Division 1 Specification Sections, apply to this Section.

B. Related Sections- Coordinate work of this Section with work of other Sections to properly execute the work requirements and maintain satisfactory progress of work in other Sections.

  1. Section 03 06 30: Cast-In Place Concrete Installation and curing requirements according to ACI 302.
  2. Section 09 62 00: Specialty Flooring, Installation requirement.
  3. Section 09 64 00: Wood Flooring, Installation requirement.
  4. Section 09 65 00: Resilient Flooring, rubber sheet and vinyl tile installation requirements.
  5. Section 09 65 36: Static Control Flooring, Installation requirements.
  6. Section 09 66 23: Resinous Matrix Terrazzo Flooring Installation Requirements.
  7. Section 0967 00: Fluid Applied Flooring, Installation requirements.
  8. Section 0968 00: Carpet, Installation requirements.

1.2 SUMMARY

A. This Section includes the furnishing, testing, and application of systems for the reduction of moisture vapor transmission and alkalinity control for Interior concrete slabs requiring the installation of VCT, vinyl flooring, rubber flooring, wood, carpet, and/or epoxy flooring systems.

1.3 SUBMITTALS

A. General: Submit each item in this Article according to the, requirements and Conditions of the Contract in Division 1. Specification Sections.

B. Product data for each type of product and process specified, which shall include:

  1. Manufacturer’s Specification
  2. Installation Instructions
  3. Independent Test Data
  4. Certification Requirements
  5. Warranty Information

C. Submit Anhydrous Calcium Chloride testing according to ASTM F1869 (using latest ASTM standard) and/or RH in-Situ Probe testing according to ASTM F2170 (using ASTM latest standard). Tests shall be performed by the Owner's Special Inspector and results provided to the Architect, Owner, General Contractor, and Water Vapor Reduction System Manufacture's Representative.

1.4 QUALITY ASSURANCE

  1. Qualifications of Applicator
  1. Employ an Applicator currently approved by the manufacturer, experienced in surface preparation and application of the material and subject to inspection and control of the manufacturer.
  1. Manufacturer’s Qualifications
  1. Manufacturer shall have no less than ten (10) years experience in manufacturing water vapor reduction systems. The water vapor reduction system must be specifically formulated and marketed for water vapor reduction and alkalinity control without change of system design for a minimum period of five (5) years.
  2. WARRANTY; Manufacturer shall provide the Owner with their standard fifteen (15) year warranty at no additional cost. Applicator of water vapor reduction system shall provide standard installation warranty for workmanship. Manufacturer must provide Independent lab test reports documenting performance per the following:
  1. ASTM E96; Water Vapor Transmission (wet method) Performance shall be documented by a prominent independent testing laboratory at a minimum of .09 perms.
  2. ASTM F3010: Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings: Perm Rate results from ASTM E96 Testing must not exceed .1
  3. ASTM D1308; Insensitivity to alkaline environment up to, and including, pH 14. A 14-day test is required with no degradation of sample reported.
  4. Certify acceptance and exposure to continuous topical water exposure after final cure.
  1. Submit list of product use and performance history, for the same formulation and system design, listing reference sources for at least 3 projects dating back for a minimum of 5 years.

1.5 DELIVERY, STORAGE AND HANDLING

  1. Deliver products to the job site in their original unopened containers, clearly labeled with the manufacturer's name and brand designation.
  1. Store products in an approved ventilated dry area; protect from dampness, freezing, and direct sun light. Product should not bestored in areas with temperatures in excess of 90° F or below 50°F.
  1. Handle product in a manner that will prevent breakage of containers and damage products.

1.6 PROJECT/SITE CONDITIONS

  1. ENVIRONMENTAL CONDITIONS
  1. Do not apply moisture vapor reduction system to unprotected surfaces or when water or moisture is accumulated on the surface of the concrete.
  2. Do not apply water vapor reduction system when temperature is lower than 50° F or expected to fall below this temperature within 24 hours from time of application.

B. Protect water vapor reduction system to prevent damage from active rain or topical water for a minimum period of 24 hours from time of application.

1.7 SCHEDULING

A. Before installation of VCT, sheet vinyl, rubber flooring, wood, carpet and/or epoxy flooring systems over the interior concrete slabs,Anhydrous Calcium Chloride testing per ASTM F1869 and/or RH in-Situ Probe testing according to ASTM F2170 shall be performed by the Owner's Special Inspector as outlined in Article 3.1 below.

B. The Owner's Special Inspector will coordinate with the Owner scheduling water vapor reduction system testing and allowing enough time to test, submit and install the water vapor reduction system before installation of floor finish.

  1. The Owner's Special Inspector will allow a minimum of 28 days or as much time as is reasonable for the concrete slab to dry before installing Anhydrous Calcium Chloride tests (ASTM F1869) and/or RH In-Situ Probe tests (ASTM F2170). All flooring, mastics, glues, and/or contaminants shall be removed to provide a clean, sound, concrete substrate prior to installing anhydrous calcium chloride tests as per ASTM F1869 and ASTM F2170.
  1. The water vapor reduction system must allow installation as early as 3-5 days after initial concrete placement.

PART 2 – PRODUCTS

2.1 MANUFACTURERS

  1. Water vapor reduction system, which may be Incorporated In the work, shall be the product of a single manufacturer, no substitutions. Manufacturer's offering approved products:
  1. AC•Tech2170™ FCVapor Reduction System: by Allied Construction Technologies, Inc. (AC•Tech)

Corporate Headquarters: (757) 855-5100.

  1. Terminology hereafter is based upon the products of AC•Tech.

2.2 MATERIALS

A. General: Use materials of one manufacturer throughout the project as hereinafter specified.

  1. Vapor Reduction / Concrete Finishing System System:
  1. Vapor Reduction System
  2. Two-component, fluid-applied, 100% solids, VOC free, epoxy-based vapor reduction resin.
  3. Epoxy must contain 100% epoxy resin & reactive solids.
  4. Epoxy must be specifically formulated to provide the following characteristics:

1.Vapor Reduction System shall be a single coat, stand alone system with no requirements for additional components such as sand broadcast for adhesion of flooring systems.

2.ASTM E96: Water Vapor Transmission (wet methods) and Average Measured Permeance must be documented by an independent testing laboratory.

3.ASTM F3010: Permeance rating of .06 gr / hr / ft2 in Hg-1; product cannot exceed a Permeance Rating of .1 gr / hr / ft2 in Hg-1.

4.ASTM D1308: Insensitivity to alkaline environment up to, and including, pH 14 in a 14-day bath test.

5.Certify acceptance and exposure to continuous topical water exposure after final cure.

6.System must reduce Calcium Chloride readings of up to 25lbs/24 hrs / 1000sq. ft.by 97% in one coat.

7.System must be able to perform as required with RH In-Situ Probe readings of99% or 100%.

  1. Base Products:

1.AC•Tech 2170™ FC Vapor Reduction System

2.Other manufacturers desiring approval must comply with appropriate section (Substitution Requests)

  1. (Optional) Bonding Surface for Hydraulic Cementitious Materials
  2. Primer for Vapor Reduction System Epoxy to improve adhesion of cementitious materials to cured epoxy.
  3. Primer must be single component, VOC free and designed for non-porous substrates.
  4. Base Products:

1.AC•Tech 2170™ SLP Self-Leveling Primer

2.Other manufacturers desiring approval must comply with appropriate section (Substitution Requests)

  1. (Optional) Hydraulic Cementitious Materials
  2. Material must be self-leveling, calcium aluminate, cement based topping.
  3. Material must be specifically formulated to provide the following characteristics:

1.ASTM C109: minimum compressive strength of 6,400 PSI.

2.ASTM C348: minimum flexural strength of 1,160 PSI.

3.ASTM C157: less than 0.04% shrinkage.

4.Must have a nominal thickness of 1/8”, up to 2”.

5.ISO-10: Indoor Air Quality Part-10: must be less than 10µg/(m²h).

6.Must be installed over epoxy that has a suitable bonding surface.

7.Base Products:

  1. Other manufacturers desiring approval must comply with appropriate section (Substitution Requests)

PART 3 – EXECUTION

3.1 EXAMINATION

  1. ASTM F1869Anhydrous Calcium Chloride testing requirements:
  1. Anhydrous Calcium Chloride testing shall be performed by the Owner's Special Inspector as outlined in Section 01410 - Quality Requirements.
  2. Perform tests according ASTM F1869 (using latest standard) protocols.
  3. Only testing at the temperature and humidity expected during normal building operation. If this is not possible, then the test conditions should be 75°F +/-10°F and 50% +/-10% relative humidity. Maintain these conditions 48 hours prior to and during tests. Water vapor transmission levels are directly affected by ambient room temperature and readings conducted without a sustained ambient temperature are NOT acceptable.
  4. Owner's Special Inspector shall provide test results with a marked up floor finish plan showing test results. Owner's Special Inspector shall provide a written clarification on status of the ambient air temperature and humidity before and during the testing procedures.
  1. ASTM F2170 RH In-Situ Probe testing requirements:
  1. RH In-Situ Probe Tests testing shall be performed by the Owner's Special Inspector as outlined in Section 01410 - Quality Requirements.
  2. Perform tests according to ASTM F2170 protocols.
  3. Only testing at the temperature and humidity expected during normal use. If this is not possible, then the test conditions should be 75°F +/-10°F and 50+/-10% relative humidity. Maintain these conditions 48 hours prior to and during tests. Water vapor transmission levels are directly affected by ambient room temperature and readings conducted without a sustained ambient temperature are NOT acceptable.
  4. Owner's Special Inspector shall provide test results with a marked up floor finish plan showing test results. Owner's Special Inspector shall provide a written clarification on status of the ambient air temperature and humidity before and during the testing procedures.
  1. Concrete Slab Inspection:
  1. On existing slabswhere the history of the previous usage is unknown or there is suspected or anticipated contamination that may cause bonding issues, the concrete should receive testing for concrete deficiencies and contaminants using the following protocols:
  2. Ion-Chromatography (IC)
  3. Checks for metallic sodium and potassium salts and chlorides
  4. Checks for un-reacted sodium and potassium silicates
  5. Infrared Spectroscopy (IR)
  6. Checks for organic contaminants
  7. Hydrocarbons; Oils, grease, fuel
  8. Organics: Blood, urine and other organic contamination
  9. X-Ray Diffraction (XRD) & Energy Dispersive X-Ray (EDXA)
  10. Checks for constituents in concrete matrix
  11. Aggregate
  12. Fines
  13. (Optional) Thin-Slice Petrography
  14. Checks for Alkali-Silica-Reaction (ASR) and other reactive or heavy aggregate weathering conditions in concrete.
  15. This testing should be performed by the owner’s independent testing agency utilizing standard core-sampling methods and review of the history of the slab installation if available. Concrete should conform to ACI Committee 201 Report “Guide to Durable Concrete.”
  16. Ensure manufacturer’s technical staff receives all testing analysis and results.
  1. Adhesion Testing:

1. The Owner's Special Inspector shall verify proper adhesion of flooring adhesives, coatings, and leveling compounds to the final vapor reduction coating system for acceptability. Contact Manufacturer's Representatives for recommendations.

3.2 PREPARATION

  1. Inspect all surfaces with regard to their suitability to receive moisture vapor reduction system with manufacturer’s representative or approved applicator.
  1. Prepare concrete surface in accordance with ICRI Technical Guideline 310.2R-2014 (Formerly #03732)
  1. Clean all surfaces to receive vapor reduction system.
  2. Remove all defective materials or foreign matter such as dust, adhesives, leveling compounds, paint, dirt, floor hardeners, bond breakers, oil, grease, curing agents, form release agents, efflorescence & laitance.
  3. Shot blast and grind all floors per ICRI Technical Guideline 310.2R to a CPS-3 (For New Concrete)OR a CSP-4 (For Renovation or Old Concrete).
  4. Use a magnetic broom or similar tool to remove any fugitive shot.
  5. Clean surfaces with Vacuum and remove any dust, debris and residue from the substrate.
  6. Remove all old stopping and/or flexible materials from expansion joints and clean all dust and dirt from cracks and control cuts.
  7. Static or non-moving cracks that are 1/8“ wide or less can be sealed or flooded with the vapor reduction epoxy during normal application.
  8. Static or non-moving cracks that are between 1/8” and 1/4“ wide and in temperature stable environments can be saw-cut/chased and filled by trowel with a mixture of the vapor reduction epoxy and Cab-o-Sil®, Aerosil® or other silica-fume type material.
  9. Static or non-moving cracks, control cuts and expansion joints that are larger than 1/4“ AND any dynamic or moving cracks, control cuts and expansion joints or any concrete substrates that are exposed to temperature fluctuations should be treated as follows:
  10. Open crack, control cut or expansion joint to 1/4” width and coat all exposed crack walls with the vapor reduction epoxy during normal installation.
  11. Once vapor reduction epoxy is cured, install a flexible backer rod into void.
  12. Install a suitable caulk over backer rod and into crack to bring flush with concrete surface and proceed with subsequent installation.
  13. Repair all open surface honeycombs and fill in accordance with vapor reduction epoxy manufacturer’s recommendations.
  14. Inform vapor reduction system manufacturer if concrete additives have been used in the concrete matrix or topically applied, such ashardeners, densifiers, curing compoundsand any other water-soluble compounds or contaminants.

C. Repair severe concrete damage or imperfections prior to moisture vapor reduction system installation with approved concrete repair materials. Comply with all requirements as listed in all product Manufacturer's technical data information. Consult with vapor reduction manufacturer.

D. Make sure that surfaces to be treated with moisture vapor reduction system have NOT previously been treated with other materials such as (but not limited to) densifiers, hardeners, penetrating sealants, silicates,underlayments, screeds, etc. If these chemicals/materials have been used, consult with the Manufacturers Representative prior to any application of moisture vapor reduction system.

E. On existing concrete or on substrates that have experienced a flooring failure, testing for concrete deficiencies or contamination such as (but not limited to), Alkaline Silica Reaction; (ASR), unreacted (sodium/potassium) silicates, organic residues, hydrocarbons, etc. is recommended and is the responsibility of the Building owner.

F. Shot blast a small test area and review surface profileand concrete absorbency with the finished flooring applicator. Ensure the flooring contractor or installer is aware that a cementitious patch or self-leveling material may be required to provide a smooth and/or level surface prior to the finished flooring or coating installation.

3.3 APPLICATION

  1. AC•Tech2170™ FCVapor Reduction System Application:
  1. Before application, review all technical data sheets, MSDS and safety information prior to handling and installation of materials.
  2. Coverage rates for this system depend on the surface profile (CSP) and porosity of the concrete substrate, per Section 3.1 Examination. On average, coverage of 100-150 sq.ft./ galloncan be expected. Always follow the appropriate or prescribed spread rate, per manufacturers recommendations and instructions.
  3. Using a 300 – 400 RPM drill with a epoxy or “jiffy” type mixing attachment, pour AC•Tech 2170™ FC Part B into Part Aand mix for 3 minutes. Ensure mixture is homogenous in texture and appearance.
  4. Immediately pour mixed material onto substrate after mixing.
  5. Use a notched or flat squeegee to spread material to appropriate spread rate.
  6. Back-roll material immediately following with asuitable 3/8”, short-nap roller leaving no areas uncoated.
  7. Allow material for cure for a minimum of 4 hours prior to installing subsequent flooring systems or coatings.
  8. When installing flooring systems and coatings directly to the AC•Tech 2170™ FC, ensure subsequent coating, system or adhesive is suitable for installation over a non-porous substrate.
  9. For additional application instructions, please consult the technical data sheet.
  1. (OPTIONAL) Bonding Surface for Hydraulic Cementitious Materials
  1. If cementitious patch or self-leveling underlayment system is to be installed, the surface of the cured AC•Tech 2170™ FC vapor reduction system must be primed prior to installing patch or self-leveling underlayment.
  2. Apply a thin, even, uniform film of AC•Tech 2170™ SLP at a thickness of 1 - 2 mils using a short nap 1/16” roller, squeegee or a clean mop to spread the material.
  3. Apply a thin, even, uniform film, leaving no areas untreated. Do not let material puddle.
  4. If material has puddled, use a clean brush or mop to evenly spread material. Do not apply excess material; heavy, thick or puddled applications may compromise the adhesion of any subsequent cementitious material.
  1. (OPTIONAL) Hydraulic Cementitious Materials
  1. After AC•Tech 2170™ SLP has cured, be sure to follow any and all manufacturers instructions for subsequent installation of cementitious materials.
  2. Ensure cementitious materials are compatible with the AC•Tech 2170™ FC epoxy and the AC•Tech 2170™ SLP primer prior to installation.
  3. Installing a test installation of the proposed cementitious material over the AC•Tech 2170™ FC epoxy and AC•Tech 2170™ SLP primer is recommended.
  4. Ensure underlayment material and thickness are suitable with subsequent flooring system adhesives and materials.

3.4 CLEANING

A. Clean all tools and equipment with xylene or like solvent immediately after use when using the AC•Tech’s2170™FC System.

B Remove all debris/empty cans resulting from water vapor reduction system installation from project site.

3.5PROTECTION

  1. Protect each coat during specified cure period from all traffic, topical water and any contaminants.

END SECTION 09 05 61.13

Revision 03.21.14-gc1