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FORM LINERS FOR ARCHITECTURAL CONCRETE
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SECTION 03121 – FORM LINERS FOR ARCHITECTURAL CONCRETE, Copyright 2006, ARCAT, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Elastomeric form liners for texturing architectural concrete.
B. Form liner accessories of fasteners, sealants, rustication and backup strips, form release agents and sealers as scheduled or required.
1.2 RELATED SECTIONS
A. Section 03100 – Concrete Formwork.
B. Section 03120 – Architectural Cast-In-Place Concrete Formwork.
C. Section 03330 – Architectural Concrete.
D. Section 03350 – Concrete Finishes.
E. Section 03400 – Precast Concrete.
F. Section 03450 – Architectural Precast Concrete – Plant Cast.
G. Section 03460 – Architectural Precast Concrete – Site Cast.
H. Section 03470 – Tilt-Up Concrete.
A. American Concrete Institute (ACI):
A. Submit under provisions of Section 01300.
B. [ Product Data ]: Installation instructions and [ Product Data ] verifying compliance with specifications.
C. Shop Drawings: Form liner layout and termination details. Indicate backup, rustication, reveal, and chamfer strip locations. Include jointing, form tie location and pattern of placement.
D. Samples: 24 inch by 24 inch of each pattern scheduled or required.
E. Certification: Manufacturer product compliance with regulations controlling VOC’s.
1.5 QUALITY ASSURANCE
A. Manufacturer Qualifications: A minimum of 3 years manufacturing experience with form liners similar to those required for this Project.
B. Installer Qualifications: A minimum of 3 years experience with form liners similar to those required for this Project.
C. Architect/Engineer’s review for aesthetic criteria. Contractor responsible for design of formwork and back-up of form liner for structural stability and sufficiency.
D. Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Cover form liners to protect from oil, dirt and UV exposure.
B. Do not use damaged products. Do not install products not bearing product trade name and manufacturer’s name.
C. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
1.7 PROJECT CONDITIONS
A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer’s absolute limits.
PART 2 PRODUCTS
A. Acceptable Manufacturer: Scott System, Inc., which is located at: 10777 E. 45th Ave. ; Denver, CO 80239; Tel: 303-373-2500; Fax: 303-373-2755; Email: firstname.lastname@example.org; Web: www.scottsystem.com
B. Substitutions: Not permitted.
C. Requests for substitutions will be considered in accordance with provisions of Section 01600.
A. Scott System Flex-Liner elastomeric form liner for creating textures in poured-in-place or precast concrete.
2. Physical Characteristics:
A. Form Release Agents:
PART 3 EXECUTION
3.1 FORM LINER PREPARATION
A. Verify lines and levels of formwork and form liner patterns are within allowable tolerances.
B. On multiple use liners, clean liner before each use. Do not use damaged liner when continued use or repair would diminish the aesthetics of the Work.
C. Apply release agent according to manufacturer’s directions. Schedule concrete pour immediately after application of release agent to avoid precipitation, dust, and debris. Protect reinforcing steel from exposure to release agents.
3.2 FORM LINER INSTALLATION
A. Store and use form liner panels at temperatures between 40 degrees F and 140 degrees F.
B. Prevent cement paste from bleeding form liner joints, form liner accessories’ joints, and tie holes.
C. Anchor liner to form on centers not to exceed 18 inches (457 mm). Decrease centers as necessary to accommodate form stripping pressures without damaging liner intended for multiple use.
3.3 CONCRETE PLACEMENT
A. Thoroughly vibrate concrete to achieve consolidation, and minimize voids. Internally vibrate into previous lift to avoid lift lines. Avoid vibrator contact with the form liner.
3.4 FORM LINER ACCESSORY INSTALLATION
A. Place rustication lines located as indicated within acceptable industry tolerances.
B. Form corners indicated to be chamfered with PVC chamfer. Chamfered corners shall be smooth, solid, unbroken continuous lines.
3.5 FORM LINER MAINTENANCE
A. Proper cleaning and storage of form liner is required to obtain acceptable results. Prevent matrix build-up on the liner surface. Scrub the liner surface with a stiff bristle scrub brush dipped repeatedly in one of the approved release agents. All excess release agent shall be blown or wiped off before the form and liner is put back into service.
B. Storage of form liner shall be out of direct sunlight and in temperatures below 140 degrees F (60 degrees C). Store flat (not rolled) to avoid elastomeric sheet “set”.
END OF SECTION