EMSEAL JOINT SYSTEMS, LTD 25 Bridle Lane, Westborough, MA 01581

EMSEAL, LLC 120 Carrier Drive, Toronto, ON, Canada M9W 5R1

PH: 508.836.0280 FX: 508.836.0281

PH: 416.740.2090 FX: 416.740.0233Toll Free: 1-800-526-8365

Copyright © 2015 by EMSEAL JOINT SYSTEMS, LTD. All Rights Reserved

DATA

TECH

DSM SYSTEMWatertight Joint System for Decks and

Below-Grade Walls

DSM SYSTEM TECH DATAJANUARY 2015, PAGE 1 OF 2

Figure 1: DSM SYSTEM in Typical Installation--New or Retrofit

Product Description

The DSM SYSTEM builds on a trackrecord of over 30 years of sealinghorizontal plane and below-grade jointswith impregnated foam sealants.

The system is comprised of:1) Precompressed, sil icone-and-impregnated-foam hybrid installed into2) field-applied epoxy adhesive on thejoint faces; with the silicone bellowslocked to the joint faces with3) a silicone sealant band(see Figure 1).

The DSM SYSTEM features an innovationin sealant technology in the form of apatent-pending acrylic adhesive infusedinto the cellular foam base material.This new chemistry incorporates ahydrophobic microsphere componentnever before available in a sealantformulation.

The material features sealingperformance significantly greater thanany acrylic impregnated predecessor.In addition, it is odorless, cleanhandling, UV stable, non-staining,and features low temperatureflexibility not previously available inasphalt, wax, or isobutylene-basedpredecessors.

The result is extension of the usability ofthe product to applications where asphaltand wax-based predecessors did notwork well under conditions of thermalshock (rapid opening and closing ofjoints during large temperature swings).These applications include joint-faceadhered installations on top decks aswell as intermediate decks.

Suitabil ity is further extended tohorizontal-plane joint applications incolder geographical regions to whichasphalt and wax-based predecessorshave not previously been recommended.

Features

Watertight—the tensionless siliconebellows are installed just below the decksurface. This ensures watertightness isachieved at the deck surface.

Non-Invasive Anchoring—there areno hard metal-to-concrete connectionswith the DSM SYSTEM. This includesembedded pins, anchors, screws, boltsor tracks, trays or rails. The system islocked to the joint faces by means of the1) backpressure of the foam; 2) theepoxy adhesive, and 3) the injected

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silicone sealant band at the joint face tofoam and silicone bellows interface.

Continuity of Seal—as in all EMSEALexpansion joint systems, continuity ofseal through changes in plane anddirection is an essential performancedifferentiator. Details for watertight,field-fabricated transitions from deck towall, at curbs, sidewalks, parapets, tees,and crosses are available from EMSEAL.

Movement Capability+30% and -25% (Total 55%) of nominalmaterial size (see "Performance").

Aesthetics & Versatility—Standardcolor is gray (other colors available),

®

uniform bellows appearance, fuelresistance, and an enhanced ability tohandle variations in joint size are amongother system features.

Performance

• Capable, as a dual-seal, of movementsof +30%, -25% (55% total) of nominalmaterial size. DSM will remainwatertight up through movements of+50% of nominal material size withthe silicone bellows providing thewaterproofing, but at these levels ofextension use should be limited towhere no direct pedestrian or highpoint-load traffic is possible--as in deck-to-wall conditions or where the DSMSYSTEM is protected by a coverplate.

Note: For material sizes 1 -1/4 -inch (30 mm) and less, a smooth, convex, single-bellow

coating is supplied.

Uses

• Ideal for new construction and retrofit of old or failed joint systems in concreteor in embedded metal angles where demolition and removal of the metal anglesis not feasible or affordable.

• Ideal for lasting replacement of tee-to-tee caulk joints in precast parking decksand stadiums or where pedestrian or vehicular traffic is expected.

• decks • runways • stadiums • mall bridge connectors• parking decks • airport aprons • arenas • below-grade walls• roadways • sidewalks • ice-floors • tunnel walls

• stair towers • perimeter joints

3) FIELD-INJECTED SILICONE

SEALANT BANDS (Silicone

supplied by EMSEAL)

2) EPOXY ADHESIVE AT

JOINT FACE

(Epoxy supplied by EMSEAL)

1) DSM MODIFIED-ACRYLIC

IMPREGNATED FOAM

FACTORY-APPLIED AND

CURED SILICONE BELLOWS*

FACING

Figure 2: DSM SYSTEM in Existing Steel Angles--Retrofit

EXISTING STEEL

ANGLES WHERE

REMOVAL IS NOT

FEASIBLE OR

AFFORDABLE

DAMAGED CONCRETE

AT BACK EDGES OF

EMBEDDED ANGLES

ROUTED AND SEALED

(BY OTHERS)

EMSEAL JOINT SYSTEMS, LTD 25 Bridle Lane, Westborough, MA 01581

EMSEAL, LLC 120 Carrier Drive, Toronto, ON, Canada M9W 5R1

PH: 508.836.0280 FX: 508.836.0281

PH: 416.740.2090 FX: 416.740.0233Toll Free: 1-800-526-8365

DSM SYSTEM TECH DATADECEMBER 2013, PAGE 2 OF 2www.emseal.com

Composition

• DSM is produced by coating animpregnated cellular foam withhighway-grade silicone.

• The silicone external facing is factoryapplied to the foam at a width greaterthan maximum joint extension and iscured before final compression.

• Silicone application and curing takesplace in a factory-controlledenvironment. In contrast to fieldapplied liquid sealant and backer rodinstallations, no movement takes placeduring curing that can causedeformation or stresses in the material.

• When compressed, a bellows is createdin the coating. As joint movementoccurs the bellows simply folds andunfolds free of tension on the bondline,

and virtually free of tensile stressesin the silicone material.

• The foam provides a resilient backingto the silicone coating, making thesystem capable of resistingreasonable transient point loads (seePerformance).

• DSM SYSTEM is supplied in 6.56 LF(2m) shrink-wrapped lengths (sticks).It is precompressed to less than thejoint size for easy insertion. Afterremoval from the shrink-wrap andhard board restraining packaging, itexpands gradually.

Installation

IMPORTANT: The following instructionsare a summary. Refer to "DSM SYSTEMInstall Data" and job-specificinstructions of an EMSEAL technicianfor complete procedures.• Store indoors at room temperature.

Expansion is quicker when warm,slower when cold.

• Ensure material nominal size matchesjoint size.

• Mix epoxy and trowel a thin layeronto the joint faces to at least thedepth of the DSM foam

• Apply a thin layer of epoxy to bothsides of the joint face.

N/AN/A

ASTM D3574 EASTM D3574 EASTM C711

ASTM G155-00A

ASTM G155-00A

COLOR

Percent Solids (minimum)SPECIFIC GRAVITY

Following tests conducted on Sealant Cured after 21 days at25°C (77°F) and 50% RH:ELONGATION PERCENT MINIMUM

Joint Modulus at 50 percent Elongation, psi (kPa) maximumJOINT MODULUS AT 100 PERCENT ELONGATION, PSI (KPA) MAXIMUM

Joint Modulus at 150 percent Elongation, psi (kPa) maximumADHESION TO CONCRETE, MINIMUM PERCENT ELONGATION

Adhesion to Asphalt, minimum percent ElongationJOINT MOVEMENT CAPABILITY, +100/-50 PERCENT, 10 CYCLES

WeatherabilityFLEXIBILITY

CELLULAR, HIGH DENSITY, POLYURETHANE FOAM

Proprietary, modified, water-based, acrylic

22.3 PSI MIN (153 KPA)157% min

185°F (85°C)-40°F (-40°C)NO CHANGES--2000 HOURS

NO CHANGES--2000 HOURS

BASE MATERIAL

Impregnation

TENSILE STRENGTH

Elongation - ultimateTEMPERATURE SERVICE RANGE

HIGH

LOW

UV RESISTANCE

(Accelerated Weatherometer)

RESISTANCE TO AGING

Bleeding:-40°F to 180°F (-40°C to 85°C)

COMPRESSION SET

Property Value

Table 1: Typical Physical Properties of DSM Foam

Property Value

Table 2: Typical Physical Properties of Silicone Coating

DARK GRAY

961.26 - 1.34

14007(48)8(55)9(62)+600+600NO FAILURE

Unaffected by climatic extremesCURED SEALANT STAYS RUBBERY FROM -45 TO

149°C (-50 TO 300°F)

Test Method

1 1/2"(40mm)

1-1/2"(40mm)

2"(50mm)

2"(50mm)

2 1/2"(65mm)

2-1/2"(65m)

2-1/2"(65mm)

2-1/2"(65mm)

2-3/4"(70mm)

2-3/4"(70mm)

3-1/4"(80mm)

3-1/2"(90mm)

3-1/2"(90mm)

3-1/2"(90mm)

3-1/2"(90mm)

5-1/2"(140mm)

6"(150mm)

Depthof Seal

Nominal Material Size(Joint Size at Mean T°F)

1/2"(12mm)

3/4"(20mm)

1"(25mm)

1-1/4"(30mm)

1-1/2"(40mm)

1-3/4"(45mm)

2"(50mm)2-1/4"

(55mm)

2-1/2"(65mm)

2-3/4"(70mm)

3"(75mm)

3-1/4"(85mm)

3-1/2"(90mm)

3-3/4"(95mm)

4"(100mm)

5"(125mm)

6"(150mm)

Table 4: DSM SYSTEM Sizing

Table 3: Approximate Volume Change of Silicone Coating after Exposure to Fluids:

Silicone Joint Sealant5-20 PERCENT

NoneNONE

None

FluidJP-4Skydrol B50/50 GLYCOL/H2OHydraulic Fluid

Percent Volume Swell - Visual

AFTER DRYING, ALL SAMPLES PASSED +100/-50% MOVEMENT TESTING.

• Remove shrink-wrap packaging andhardboard. Allow partial expansion untilsnug when inserted into epoxied joint faces.

• Insert material into joint until bellows isflush with (below-grade or deck-to-wall) orrecessed by 1/4" (6mm) in trafficapplications.

• Join lengths by pushing silicone coatedends firmly together.

• Wipe silicone facing using clean,lint-free rag made damp with solvent.

• Before the epoxy cures, force the tip of thesealant tube between the foam and thesubstrate and inject a silicone sealant band.Tool overflow sealant into a cove beadbetween the top of the silicone bellows andthe substrate. Tool silicone between joinedlengths so that bellows is not restrained byexcess silicone.

Warranty

Standard or project-specific warranties are

available from EMSEAL on request.

CAD Details & Guide Specs

Guide specifications and CAD details are

available at www.emseal.com.

Availability & Price

DSM SYSTEM is available for shipment

internationally. Prices are available from

local representatives and/or directly from

the manufacturer. EMSEAL® reserves the

right to modify or withdraw any product without

prior notice.

Max. Joint(opens to)

Min. Joint(closes to)

5/8"(16mm)

15/16"(24mm)

1-1/4"(30mm)

1-5/8"(42mm)

2"(50mm)

2-1/4"(55mm)

2-5/8"(67mm)

2-7/8"(73mm)

3-1/4"(85mm)

3-1/2"(90mm)

3-7/8"(98mm)

4-1/4"(110mm)

4-1/2"(115mm)

4-7/8"(120mm)

5-1/4"(135mm)

6-1/2"(165mm)

7-1/8"(180mm)

3/8"(10mm)

9/16"(14mm)

3/4"(20mm)

7/8"(22mm)

1-1/8"(28mm)

1-1/4"(30mm)

1-1/2"(40mm)

1-5/8"(42mm)

1-7/8"(47mm)

2"(50mm)

2-1/4"(55mm)

2-1/2"(65mm)

2-5/8"(67mm)

2-3/4"(70mm)

3"(75mm)

3-3/4"(95mm)

4.5"(115mm)

Copyright © 2015 by EMSEAL JOINT SYSTEMS, LTD. All Rights Reserved

(see “Performance” for movement capabilities & limitations)

No bleeding when compressed to minimum of claimedmovement i.e. -25% of nominal size and when simulateouslyheated to 180°F (85°C) FOR 3 HOURS

MATERIAL RECOVERS TO +30% OF NOMINAL SIZE WITHIN 24 HOURS OF COMPRES-SION TO -25% AND SIMULTANEOUS HEATING TO 180°F (85°C) FOR 3 HOURS

• Substrates must be parallel, plumb andcapable of resisting approx. 2.5 psibackpressure from the foam.

• Standard sizes from 1/2" (12mm) to 6"(150mm). Other sizes available subjectto review of application: consultEMSEAL.

• Fuel Resistance: Silicone sealant is notdegraded by contact with fuel. Someswelling of the material will normallyoccur, but it will return to its originalshape upon evaporation of the fuel.

• Sizes in excess of 4” consult EMSEAL• For sizes not shown consult EMSEAL.• Select nominal material size to correspond to joint-gap size

at mean temperature.• Material supplied in shrink-wrapped sticks of 6.56 ft. (2 M).

EMSEAL_DSM_TD_01-09-2015