POLYMERIC HOT-APPLIED SEALANT
SEALTIGHT HI-SPEC has no equal
pound-for-pound for total life-cycle cost efficiency and return on investment.
SEALTIGHT HI-SPEC Polymeric Hot-Applied Sealant is a
premium-quality, single-component joint sealing compound. It is formulated with
a carefully balanced blend of 100% virgin polymer, asphalt, plasticizers and
inert, reinforcing fillers to produce a hot-pour joint sealant with excellent
bonding properties, high resiliency, ductility and resistance to degradation
from weathering. It will not become brittle at low temperatures; will not flow
or migrate from the joint at temperatures up to 140ºF (60ºC).
HI-SPEC is recommended for large-scale sealing of joints and cracks
in Portland Cement and asphaltic concrete pavements because of its excellent
cost efficiency, long sealant life and high return on investment. Typical
applications include sealing expansion and contraction joints in concrete
highways – both transverse and longitudinal – joints between concrete
pavements and asphaltic shoulders and random cracks in both Portland Cement and
asphaltic concrete pavements.
Advantages and Benefits
|Provides an economical hot-pour, single-component
sealant for large-scale sealing of Portland Cement and asphaltic concrete
|Recognized by public and private sector sealing
contractors as the "best available" and "most cost
efficient" joint sealant
|Produces tough, dependable joint seals with exceptional
|Offers excellent cohesive and adhesive qualities
|Resists degradation from weathering
|Remains ductile and resilient at low temperatures
|Will not flow or migrate at temperatures up to 140ºF
MELTING: HI-SPEC should be melted in a
conventional double-boiler, oil-jacketed melter-applicator equipped with an
agitator and separate control thermometers for both the oil bath and melting
vat. On start-up of the melting kettle, add small quantities of HI-SPEC with the
plastic bag liner to the melter.
CONTROL MATERIAL TEMPERATURES AT 370ºF (188ºC). NEVER EXCEED 390ºF
(199ºC). RECOMMENDED POURING TEMPERATURE IS 370ºF (188ºC).
Only melt enough material to be poured the same day. Material should be added to
the melter as the sealant is withdrawn during the sealing operation.
The joints and cracks to be sealed must be clean
and dry. Dust, dirt and laitance should be removed prior to application.
Asphaltic Pavement and Maintenance Sealing
- For ideal sealing with maximum effectiveness, it is suggested that cracks or
joints be routed out to provide a sealant resevoir 1/2" (12.7mm) wide with
a minimum depth of 1/2" (12.7mm). This provides for a 1:1 width-to-depth
ratio. For joints 1" (25.4mm) wide, the suggested depth is 1/2"
Proper routing should be slightly larger than the existing crack/loint to ensure
proper adhesion to sidewalls. The sealant should be applied into the crack/joint
from the bottom up, slightly overfilling. Once applied, a follow-up should be
done with a soft rubber, U-shaped squeegee to form a wipe zone of approximately
3-4 inches (76-2 - 101.6mm) wide along the crack/joint and flush with the
highway or pavement surface. To control and maintain the suggested joint depth
and sealant usage, SEALTIGHT CERA-ROD Heat-Resistant Backer Rod may be installed
in the joint opening.
New Concrete Pavement Sealing
- Typical joint configuration should be 3/8" (9.54mm) wide with a 1/2"
(12.7mm) depth for an approximate 1:1 width to depth ratio. Designated joint
width and depth is determined by the appropriate highway or pavement authority.
SEALTIGHT CERA-ROD Heat-Resistant Backer Rod may be installed in the joint
opening to control depth and sealant usage.
DO NOT DILUTE. Do not heat to temperatures above 390ºF
(199ºC). Reheating or prolonged (over 6 hours) heating at or above the safe
temperature of 390ºF (199ºC) could cause this material to gel in the
application equipment. A rapid increase in viscosity, accompanied with
stringiness, signals the approach of gelation. Should this happen, the material
must be rapidly pumped from the melting kettle and discarded. Apply sealant when
substrate and air temperatures are 40ºF (4Cº) or higher. For optimum sealant
performance all material left in the melter-kettle should be drawn off and
discarded. Lines should be flushed out clean. Do not dilute with solvent. Read
and follow application information and precautions. Refer to Material Safety
Data Sheet for complete health and safety information.
50 lb. (22.7 kg) container
55 lb. (24.95 kg) cartons. Each carton contains two 27 1/2 lb. (12.475 kg) buns
in polypropylene liners.
ASTM D 3405
Federal Specification SS-S-1401C
FAA Specification Item P-605
Corps of Engineers CRD-C 530
AASHTO M 301
72.2 lbs./ft. (1,158 kg/m). A joint
1/2" x 1/2" (12.7mm x 12.7mm) will require 12.6 lbs./100 linear feet
Asphaltic Concrete Compatibility
Less than .90cm
Less than .3cm
Passed 100% extension @ 0ºF(-17ºC)
Passed 50% extension @ -20ºF (-29ºC)
More than 60%
This material last updated August, 2000.
W. R. MEADOWS, INC. warrants that, at the time
and place we make shipment, our materials will be of good quality and will
conform with our published specifications in force on the date of acceptance of
the order. THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER
WARRANTY, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES
OTHERWISE ARISING BY OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR
OTHERWISE. As the exclusive remedy for breach of this Warranty, we will replace
defective materials, provided, however, that the buyer examine the materials
when received and promptly notify us in writing of any defect before the
materials are used or incorporated into a structure. Three (3) months after W.
R. MEADOWS, INC. has shipped the materials, all our Warranty and other duties
with respect to the quality of the materials delivered shall conclusively be
presumed to have been satisfied, all liability therefore terminates, and no
action for breach of any such duties may thereafter be commenced. W. R. MEADOWS,
INC. shall in no event be liable for consequential damages. Unless otherwise
agreed to in writing, no warranty is made with respect to materials not
manufactured by W. R. MEADOWS, INC. We cannot warranty or in any way guarantee
any particular method of use or application of the performance of materials
under any particular condition. Neither this Warranty nor our liability may be
extended or amended by our salesmen, distributors or representatives, or by our
distributor's representatives, or by any sales information or drawings.