ACI Standard. Recommended Practice for. Consolidation of Concrete (ACI 72). D. H. BASGEN. R. H. BRUBAKER. JOHN C. FARMER. LARS FORSSBLAD. Recommended Practice for Consolidation of Concrete (ACI ). Front Cover. American Concrete Institute. American Concrete Institute, – Concrete – Recommended Practice for Consolidation of Concrete (ACI ) (Reaffirmed ). Front Cover. ACI Committee American Concrete Institute,
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This section is based on the products of Scott System, Inc. Denver, CO Tel: Form liner accessories of fasteners, acu, rustication and backup strips, form 30-72 agents and sealers as scheduled or required.
ACI — CH. ACI 72  — CH. ACI 78 — CH. Installation instructions and [ Product Data ] verifying compliance with specifications. Form liner layout and termination details. Indicate backup, rustication, reveal, and chamfer strip locations.
Include jointing, form tie location and pattern of placement.
URETHANE FORM LINERS FOR ARCHITECTURAL CONCRETE SPECIFICATIONS – Scott System
A minimum of 3 years manufacturing experience with form liners similar to those required for this Project. A minimum of 3 years experience with form liners similar to those required for this Project. Contractor responsible for design of formwork and back-up of form liner for structural stability and sufficiency.
The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project. Provide a mock-up for evaluation of surface preparation techniques and application workmanship. Provide full scale mock-up using contract materials, methods and workmanship.
Incorporate formwork accessories and minimum one vertical and one horizontal form liner joint. Include concrete mix, forming system, form release agents, placement rate, form pressures, joint sealing, vibrating and stripping practices.
Demonstrate patching and repair procedures for spawled concrete, and voids caused by honeycombing or bug holes.
Citation Styles for “Recommended practice for consolidation of concrete (ACI 309-72).”
Approved mock-up shall be the standard by which Work will be evaluated. Do not use damaged products. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
Maintain environmental conditions temperature, humidity, and ventilation within limits recommended avi manufacturer for optimum results. Requests for substitutions will be considered in accordance with provisions of Section After curing the forms are removed revealing the pattern created by the form liner. Scott System Flex-Liner elastomeric form liner for creating textures in poured-in-place or precast concrete.
Insert pattern number s of series required. Scott Systems Pattern Series: Custom pattern as indicated on drawing.
Hardness — D — Shore A: Elongation D — percent: Tensile Strength Ultimate D Abrasion — Taber H Keyed liner cannot strip unless it is not bonded to form sections and can be peeled from the set concrete after the form has been moved away. Sectioning of column forms will eliminate this problem. Never try to match textures end to end, i. Either use longer pieces of form liner or specify a rustication joint line. Light textures may get lost on a tall building.
Try to view the texture sample from a distance with sidelight for the qci visual perspective of the texture.
Use of some types of release agents will adversely affect the elastomeric urethane. Verify lines and levels of formwork and form liner patterns are within allowable tolerances.
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. Schedule concrete pour immediately after application of aco agent to avoid precipitation, dust, and debris. Protect reinforcing steel from exposure to release agents.
Store and use form liner panels at temperatures between 40 degrees F and degrees F. Anchor liner to form on centers not to exceed 18 inches mm.
URETHANE FORM LINERS FOR ARCHITECTURAL CONCRETE SPECIFICATIONS
Decrease centers as necessary to accommodate form stripping pressures without damaging liner intended for multiple use. 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. Place rustication lines located as indicated within acceptable industry tolerances.
Form corners indicated to be chamfered with PVC chamfer. Chamfered corners shall be smooth, solid, unbroken continuous lines. 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 sci service.
Storage of form liner shall be out of direct sunlight and in temperatures below degrees F 60 degrees C. Menu Skip to content. Elastomeric form liners for texturing architectural concrete. Section — Concrete Formwork. Section — Architectural Concrete. Section — Concrete Finishes. Section — Precast 30972. Section — Tilt-Up Concrete. Submit under provisions of Section Cover form liners to protect from oil, dirt and UV exposure.