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One-Component Polyurea Concrete Joint Sealant

BW6-189

One-component moisture-curing polyurea joint pouring material for concrete expansion joints, deformation joints, settlement joints and waterproof sealing details. It provides flexible sealing, dense filling and strong adhesion to prepared concrete joint surfaces.

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Finished gray sealant in a long concrete bridge expansion joint

Product Description

BW6-189 one-component polyurea sealant is a moisture-curing polymer product based on a novel silane-terminated polyether resin. It reacts with moisture in the atmosphere to form a rubbery elastomer, delivering reliable potting and sealing performance. With high solid content, non-foaming characteristics, excellent adhesion and hydrophilic reactivity, this product provides superior sealing performance compared with conventional similar products. Featuring low modulus and high elasticity, it effectively addresses leakage issues occurring in structural joints including deformation joints, expansion joints and connection joints.

BW6-189 One-Component Polyurea Concrete Joint Sealant official product packaging image

Application Scope

BW6-189 is used for waterproofing and leakage reinforcement of roads, bridges and coal mines, building expansion-joint waterproofing, and deformation-joint or settlement-joint sealing in other buildings.

  • Road, Bridge and Coal-Mine DetailsWaterproofing and leakage-reinforcement review for prepared civil-engineering details.
  • Building movement jointsJoint sealing for building deformation joints, settlement joints and related waterproof details.
  • Concrete gap fillingHand scraper, pouring or triangular-bag extrusion can be reviewed according to joint geometry.
  • Leakage-prone detailsSupports sealing work where joint movement, concrete edge condition and water exposure need to be checked together.

Designed for Flexible Waterproof Joint Sealing

BW6-189 helps applicators build a dense, elastic seal inside prepared concrete joints. It is suitable when a project needs a one-component material for joint filling, waterproof sealing and movement accommodation.

400%ElongationHelps the cured sealant accommodate deformation in prepared expansion, deformation and settlement joints.
1.0 MPa300% Tensile ModulusSupports movement-accommodation review for the cured sealant under the listed GB/T 528-2009 test method.
98 +/- 2%Solids ContentSupports a dense sealant body for waterproof joint filling without relying on high solvent evaporation.
30 minSurface Dry TimeHelps plan joint sealing sequence, protection time and follow-up work under the listed 25°C condition.

Product Features and Advantages

BW6-189 focuses on flexible joint sealing, helping form a dense, rubber-like filling body inside prepared concrete joints where movement accommodation, waterproof sealing and concrete-side adhesion are important.

Joint Sealing Performance

  • Moisture-Curing ElastomerReacts with moisture and forms a rubber-like elastomer for joint waterproof sealing.
  • Dense Waterproof SealThe cured sealant forms a dense internal structure that helps block water paths in prepared joints.
  • No Foaming During CureThe technical sheet states that the material does not produce bubbles during moisture curing.
  • Temperature-Tolerant CureThe technical sheet lists curing at both high and low temperatures, with separate low-temperature handling guidance.

Application and Handling

  • One-Component MaterialNo A/B component proportioning is listed, supporting simpler field handling for compatible joint details.
  • Scraper, Pouring or ExtrusionThe guide lists hand scraper, pouring and triangular-bag extrusion for suitable joint geometry.
  • Water-Curing ReferenceThe technical sheet lists water-curing capability; project conditions and substrate suitability still need review.
  • Thick Joint PlanningFor thicker application, the document recommends two layers with each application interval in 6-30 hours.

Technical Data

These technical values are measured under controlled laboratory conditions to support product comparison, project selection and specification review. Please confirm final requirements with the latest approved TDS and project-specific conditions.

Product Information

Product data table
ItemResult
AppearanceWhite
Specific gravity (g/cm³)1.1
Viscosity (cps) @ 25°C11000 +/- 1000
Solid content (%)98 +/- 2
Surface dry time (min)30 (25°C)
Recoat time (h)Min 6 h; max 24 h (25°C)

Physical Properties

Product data table
ItemTest standardResult
Hardness (shore A)GB/T 22446-200955
Tensile strength (MPa)GB/T 528-20091.5
100% tensile modulusGB/T 528-20090.6
300% tensile modulusGB/T 528-20091.0
Elongation rate (%)GB/T 528-2009400%
Adhesive strength (concrete base) MPaGB/T 22446-20091.3 (or substrate broken)

Application Environment and Guide

Stable joint sealing depends on concrete condition, joint geometry, moisture exposure, material handling and curing environment. Review the application environment and guide values before installation, and confirm final parameters with the latest TDS and project requirements.

Surface pre-treatment

Product data table
SUBSTRATEREQUIREMENT
Metal surfaceRust removal by sand blasting to Sa2.5 grade of ISO8501-1 or GB8923 standard is recommended.
Concrete surfaceThe surface should be solid, dense, flat, clean and dry, with no sanding, crusting, cracks or honeycomb surface.
Other materialsConsult technical personnel for treatment of other materials.

Application instructions

Product data table
GUIDE ITEMINSTRUCTION
Application toolsHand scraper or pouring. Loose concrete surface should be pre-treated and strengthened.
Gap filling methodPour the material into a triangular plastic bag and tie it tightly; cut a 6-15 mm opening at the sharp corner and extrude the material along the gap.
Low-temperature useThis product can be used at -10°C. In low-temperature environments, placing the paint bucket in an air-conditioned room at high temperature for more than 24 h is recommended.
Opened material handlingPour out only as much as can be used at one time. Seal the lid in time and do not pour used liquid back into the original bucket.
Thick applicationIf the application thickness is thick, applying 2 layers is recommended, with each application interval in 6-30 h.

Application notes

Product data table
NOTEREQUIREMENT
Moisture-curing storage disciplineSeal the lid in time after use, and do not pour remaining liquid back into the original bucket.
Low-temperature readinessFor low-temperature application, precondition the paint bucket as recommended in the data sheet.
Thick joint fillingPlan two layers when thickness is high, with the listed 6-30 h application interval.

Product Curing Time, Shelf Life and Packing

Use the listed curing profile, shelf life, packing and storage requirements for application scheduling, warehouse handling and order planning.

Product Curing Time

The curing time varies with the environment condition, especially temperature and relative humidity.

Product data table
Substrate temperatureSurface drySolid dryFully cured
+10°C40 min24 h7 d
+20°C30 min15 h7 d
+30°C20 min10 h7 d

Shelf Life & Packing

Product data table
ItemDetails
Packing specification5 kg/barrel; 10 kg/barrel
Storage temperature5-35°C
Shelf life6 months from the date of production in unopened state, with sealed product packaging ensured
Storage precautionStore in a cool, ventilated environment and avoid direct sunlight

Product Health and Safety Information

Product Health and Safety Information

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Integrity Declaration

Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees that the technical data stated in this sheet is based on laboratory tests. Actual testing methods may vary due to different circumstances. Users should test and verify applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. does not take any other responsibility except product quality and reserves the right to modify the listed data without prior notice.

FAQ about BW6-189 concrete joint sealant.

These answers support joint sealant selection, project condition review and procurement before ordering.

BW6-189 is a one-component moisture-curing sealant for prepared concrete expansion joints, deformation joints, settlement joints and related waterproof-sealing details.

BW6-189 is a concrete joint sealant. It should be reviewed for joint filling and waterproof sealing, not as a large-area surface coating.

It can be reviewed for building expansion joints, concrete deformation joints, settlement joints, road and bridge joint sealing, prepared leakage details and compatible civil-engineering joints.

The application guide lists hand scraper, pouring and extrusion-style gap filling for suitable joint geometry. Joint width, depth and backing details should be confirmed first.

Review joint width, depth, expected movement, backing material, bond breaker use, concrete cleanliness, moisture, edge condition and curing temperature before application.

No. Structural movement, joint geometry and load conditions require appropriate project design. BW6-189 should not be presented as a replacement for structural joint design.

Buyers can request the latest TDS, SDS, application guidance, packing information and project-specific joint-sealing review before ordering.

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If you are evaluating BW6-189 for concrete expansion joints, deformation joints, settlement joints or related waterproof-sealing details, request the latest technical data sheet and project-specific joint review before ordering.

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