ACI 309-72 PDF

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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Try to view the texture sample from a axi with sidelight for the best visual perspective of the texture. ACI 72 [78] — CH. Scott System Flex-Liner elastomeric form liner for creating textures in poured-in-place or precast concrete. On multiple use liners, clean liner before each use. Contractor responsible for design of formwork and back-up of form liner for structural stability and sufficiency. After curing the forms are removed revealing the pattern created by the form liner.

Decrease centers as necessary to wci form stripping pressures without damaging liner intended for multiple use.

URETHANE FORM LINERS FOR ARCHITECTURAL CONCRETE SPECIFICATIONS

Provide a mock-up for evaluation of surface preparation techniques and application workmanship. Place rustication lines located as acci within acceptable industry tolerances.

Include concrete mix, forming system, form release agents, placement rate, form pressures, joint sealing, vibrating and stripping practices. All excess release agent shall be blown or wiped off before the form and liner is put back into service.

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Chamfered corners shall be smooth, solid, unbroken continuous lines. Custom pattern as indicated on drawing.

Form corners indicated to be chamfered with PVC chamfer. Incorporate formwork accessories and minimum one vertical and one horizontal form liner joint. Scrub the liner surface with a stiff bristle scrub brush dipped aaci in one of the approved release agents. Verify lines and levels of formwork and form liner patterns are within allowable tolerances. Section — Concrete Finishes.

Storage of form liner shall be out 039-72 direct sunlight and in temperatures below degrees F 60 degrees C. Internally vibrate into previous lift to avoid lift lines.

Avoid vibrator contact with the form liner. Section — Tilt-Up Concrete.

Form liner accessories of fasteners, sealants, rustication and backup strips, form release agents and sealers as scheduled or required. When deciding on the extent of the mock-up, consider all the major different types of work on 3309-72 project. The following is one example of how a mock-up on a large project might be specified. Submit under provisions of Section Schedule concrete pour immediately after application of release agent to avoid precipitation, dust, and debris.

Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction. Elongation D — percent: Approved mock-up shall be the standard by which Work will be evaluated. Section — Architectural Concrete.

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Section — Precast Concrete. Never try to match textures end to end, i. ACI — CH.

ACI Materials Journal

A minimum of 3 years experience with form liners similar to those required for this Project. Elastomeric form liners for texturing architectural concrete.

Hardness — D — Shore A: Form liner layout and termination details. Do not use damaged products. Light textures may get lost on a tall building. Protect reinforcing steel from exposure to release agents. Sectioning of column forms will eliminate this problem. Anchor liner to form on centers not to exceed 18 inches mm.

Find in a library : Recommended practice for consolidation of concrete (ACI ).

Demonstrate patching and repair procedures for spawled concrete, and voids caused by honeycombing or bug holes. Thoroughly vibrate concrete to achieve consolidation, and minimize voids.

Keyed liner cannot strip unless it is not bonded to form sections and can be peeled from the set concrete after the 309-2 has been moved away.

Cover form liners to protect from oil, dirt and UV exposure. Include jointing, form tie location and pattern of placement. Proper cleaning and storage of form liner is required to obtain acceptable results.

Installation instructions and [ Product Data ] verifying compliance with specifications.