| 03 15 00 (07 91 26) | No. 320 |
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DESCRIPTION
ASPHALT EXPANSION JOINT is composed of a blend of asphalts, vegetable fibers
and mineral fillers formed under heat and pressure between two asphalt-saturated
liners. It is waterproof, permanent, flexible and self-sealing.
FIBRE EXPANSION JOINT is composed of cellular fibers securely bonded together and uniformly saturated with asphalt to assure longevity. FIBRE EXPANSION JOINT is versatile, resilient, flexible and non-extruding. When compressed to half of its original thickness, it will recover to a minimum of 70% of its original thickness.
CERAMAR® Flexible Foam Expansion Joint Filler is composed of a unique blend of isomeric polymers in a very small, closed-cell structure. Gray in color, CERAMAR is a lightweight, highly flexible and resilient material offering recovery qualities of over 99%. This mini closed-cell structure is virtually non-absorbent. It can be wrapped or formed around curved or circular surfaces.
SPONGE RUBBER EXPANSION JOINT is produced to a uniform thickness and density from gray-colored, top-quality, blown sponge rubber. It is easily compressed and has a recovery of 95% or more of the original thickness and a density of not less than 30 pounds per cubic foot (480.56 kg per cubic meter).
CORK EXPANSION JOINT is produced from clean, selected, granulated cork bonded with a phenolic resin. It is highly resilient, will compress without extrusion and recovers to 95% of its original thickness after 50% compression.
SELF-EXPANDING CORK EXPANSION JOINT is formed and compressed under heat and pressure to permit expansion up to 140% of original thickness after installation, which permits the filler to compensate for concrete shrinkage. Normal humidity conditions after installation activate the self-expanding properties of the cork.
 ASPHALT |
 CERAMAR |
 FIBRE |
 SPONGE RUBBER |
 CORK |
 SELF-EXPANDING CORK |
Concrete expands and contracts with temperature and moisture changes. As the temperature rises or the moisture content of the concrete increases, expansion takes place. As the temperature drops, the concrete will contract. The provision to accommodate movement at pre-determined locations with proper joint applications prevents the development of stresses that could rupture the concrete.
Joint type and spacing will vary with each project according to the type of structure, climatic conditions and anticipated stresses in the concrete. The coefficient of thermal expansion in concrete is 0.0000055 per linear inch of concrete per degree Fahrenheit of temperature change, yielding approximately .66 inch of movement per 100 feet with a 100° F (38° C) temperature range. To estimate expansion, multiply length in inches x number of degrees of anticipated temperature differential x 0.0000055. Use the resulting anticipated movement to determine correct thickness of the control joint and proper spacing for placement of the joint. Thinner joints (1/4”, 3/8” or 1/2”) (6.35 mm, 9.53 mm or 12.7 mm) spaced at frequent intervals offer greater control than thicker joints spaced at greater intervals. The basic concept is to provide ample room for the concrete to expand and contract without creating damaging stresses and resultant cracking.
USES
ASPHALT EXPANSION JOINT can be used in 80% of all control joint applications. It is ideally suited for joints in sidewalks, driveways, streets, and single- and multi-level floor slabs. Due to its unique self-sealing characteristic, no subsequent joint sealing is required.
FIBRE EXPANSION JOINT is ideal for use on highways, streets, airport runways, sidewalks, driveways, flatwork and scores of commercial and industrial applications.. To isolate filler from sealant, use SNAP-CAP® (Refer to data sheet #324). Seal with #164, HI-SPEC® or SOF-SEAL® from W. R. MEADOWS for maximum protection from water infiltration, weathering and to assure proper performance. Refer to data sheet #220, 221 and 224.
CERAMAR Flexible Foam Expansion Joint is gray in color and provides an excellent joint filler and back-up material for use in either horizontal or vertical applications where expansion and contraction movements must be accommodated. CERAMAR is compatible with all currently popular cold-applied sealants, caulks and hot-pour joint sealing compounds. It is lightweight, highly flexible and easy to cut or form in the field without waste. CERAMAR compresses easily for use with shrinkage-compensating concrete and it may be used to relieve stress and pressure in concrete pavements. Refer to data sheet #323.
HIGHLY FUNCTIONAL JOINTING AND SEALING SYSTEM: Two excellent products, CERAMAR and GARDOX® Horizontal Sealant, may be used together to provide an excellent horizontal sealing system for plaza decks, sidewalks, driveways, commercial and industrial floors. Refer to GARDOX data sheet #226.
SPONGE RUBBER EXPANSION JOINT is frequently used on bridge structures and sewage treatment plants that undergo rapid changes in temperature. Because of its excellent recovery capability during wide temperature variations, SPONGE RUBBER is used around supporting pillars, drains, hydrants, lamp and sign posts, as well as in isolation applications or between materials having dissimilar coefficients of expansion.
CORK and SELF-EXPANDING CORK EXPANSION JOINT are used where high resiliency is needed, such as in sewage plants, floodwalls, spillways, filtration plants and in numerous commercial and industrial applications. SELF-EXPANDING CORK is especially desirable where a constant friction-fit is required.
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FEATURES/BENEFITS
ASPHALT
• Non-absorbing.
• Used in 80% of all control joint situations.
• Protects against water infiltration.
• Self-sealing.
• Permanent.
FIBRE
• Non-extruding ... versatile ... offers a minimum of 70% recovery after
compression.
• A tough, lightweight, easy-to-use, semi-rigid joint filler available
in strips and shapes fabricated to most requirements.
• Easy to cut ... dimensionally stable ... not sticky in summer or brittle
in winter.
• Manufactured in the U.S.A.
• Proven field performance.
CERAMAR
• Gray color
• Lightweight, flexible foam ... forms or wraps around curved or circular
surfaces.
• Cuts easily on the
job with a razor knife ... no breakage or waste.
• Offers high resiliency and 99% recovery qualities ... low compression
values ... non-extruding ... virtually non-absorbent.
• Resists ultraviolet degradation.
• Non-impregnated ... no staining or bleeding.
• Bonds easily with common cartridge adhesives.
• Non-gassing.
• Compatible with all hot-or cold-applied sealants.
SPONGE RUBBER, CORK and SELF-EXPANDING
CORK
• High resiliency with excellent recovery after compression.
• Protects against water infiltration when properly sealed.
• Easy to handle and install.
• Offers isolation capabilities.
APPLICATION
The type of control joint and spacing used will vary with each project according
to the type of structure, climatic conditions and anticipated stresses in the
concrete. Thinner joints of 1/4” (6.35 mm), 3/8” (9.53 mm) or 1/2”
(12.7 mm) spaced at frequent intervals offer greater control than thicker joints
spaced at greater intervals. The basic objective is to provide ample room for
the concrete to expand or contract without creating damaging stresses. Expansion
joints should be positioned against forms at interrupting objects or columns
and against abutting structures prior to the placement of the concrete. ASPHALT
EXPANSION JOINT should be recessed 1/4” (6.35 mm) below the concrete surface.
A sealant is not required. FIBRE, CERAMAR,
SPONGE RUBBER, CORK and SELF- EXPANDING CORK EXPANSION JOINT should be recessed
1/2” (12.7 mm) below the concrete surface to accept the joint sealant.
To isolate filler from sealant, use SNAP-CAP. (Refer
to data sheet #324.)
SNAP-CAP should be installed flush with the surface. After removal of the top section of SNAP-CAP, the joint opening is ready for sealing with a suitable sealant from W. R. MEADOWS. NOTE: A joint sealer is not required for ASPHALT EXPANSION JOINT.
Suitable sealants for horizontal applications of CORK and SELF-EXPANDING CORK EXPANSION JOINT are #164, HI-SPEC, SOF-SEAL, GARDOX, DECK-O-SEAL® and SAFE-SEAL® 3405. GARDOX and DECK-O-SEAL are recommended for use with SPONGE RUBBER EXPANSION JOINT. The recommended sealant for vertical applications is DECK-O-SEAL GUN GRADE.
PRECAUTIONS
Sheets and cut strips of Asphalt EXPANSION JOINT should be stored on a flat
surface. Silicone sealants are not recommended for use with Sponge Rubber EXPANSION
JOINT. NOTE: SELF-EXPANDING CORK is shipped in cardboard cartons. This packaging
should not be damaged or opened until time of installation. Cartons should not
be exposed to weathering, heat or moisture.
Due to its light
weight, CERAMAR may float and should be held in place
by compression or with a mechanical attachment. Read and follow application
information, precautions and Material Safety Data
information.
CONTROL JOINT SPECIFICATION
DATA AND SIZE INFORMATION
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Conforms
to or Meets Specifications |
Thickness Widths* |
Slab Widths |
Standard Lengths |
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1/4"
(6.35 mm) 3/8" (9.53 mm) 1/2" (12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
36"
(914.4 mm) |
5'
(1.52 m) 6' (1.83 m) 10' (3.05 m) |
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1/4"
(6.35 mm) 3/8" (9.53 mm) 1/2" (12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
36",48" (914.4 mm, 1.22 m) |
10'
(3.05 m) Also available 5', 6', 12' (1.5, 1.83, 3.66 m) |
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1/4"
(6.35 mm) 3/8" (9.53 mm) 1/2" (12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
48" (1.22 m) |
10' (3.05 m) |
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1/4"
(6.35 mm) 3/8" (9.53 mm) 1/2" (12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
36" (914.4 mm) |
10' (3.05 m) |
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1/4"
(6.35 mm) 3/8" (9.53 mm) 1/2" (12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
36" (914.4 mm) |
10' (3.05 m) |
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1/2"
(12.7 mm) 3/4" (19.05 mm) 1" (25.4 mm) |
24" (610 mm) |
3' (.91 m) |
| * Pre-cut joint furnished in any desired width | ||||
This material last updated March 2007.
