Technical Data Sheet - Crack Repair 28

Product Name

Bonstone® Crack Repair 28 (A-028/B-405)

Manufacturer

Bonstone Materials Corporation

Download Technical Data Sheet PDF

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Product Description

A two-component, exterior grade, clear, medium viscosity epoxy.

Basic Uses

• Stone or concrete crack injection, patching and mending
• Bonding stone or hardened concrete to hardened concrete
• Bonding new concrete to existing concrete
• Anchor bolt adhesive
• Bonding stone and concrete to other construction materials
• Bonding stone to stone
• General purpose adhesive for wood, concrete, metal

Limitations
Use on stone free of oil, grease, wax, coatings and other contaminates.

Color
Clear

Applicable Standards
Meets ASTM C-881, Types I, II, IV, V; Class C, Grade 2

Technical Data

Cured Properties

Mixed Properties

Installation

General Instructions
(If using cartridges, additional usage directions are available. See our information sheet labeled "Cartridge use directions".) See separate doweling, laminating, and patching instructions for more specific instructions. CSI format specifications are available.

Surface Preparation and Use
Use gloves, wear eye protection, and avoid skin contact. When grinding cured joints, wear a dust mask. Substrate to be bonded must be completely dry and dust-free. Mix only the amount of epoxy which can be used in 10 minutes. Avoid stressing joint before complete cure of epoxy. Mask areas which must be kept free of epoxy. Clean uncured epoxy from tools with toluene or xylene. Remove cured epoxy mechanically.

Mixing Instructions
All materials should be at or above 55°F. Combine the two ingredients at the following volume ratio: two parts A-028 to one part B-405. Mix thoroughly--- ingredients must be blended homogeneously for proper cure.

Temperature Dependency
Temperature will affect the working properties of the material. Approximately every 15°F results in doubling the speed of cure. Therefore, at 90°F set time is cut in half, at 60°F the set time is doubled. Do not use on a substrate at a temp. below 55°F.

Coverage
Approximately 30 square feet per gallon when applied at 50 mils (1/16th of an inch). 231 cubic inches per gallon.

Availability

Packaging and Storage
Bonstone® A-028/B-405 is available in quarts, gallons, and 5 gallon pails, and 300ml and 150ml cartridges. Shelf life is approximately one year if kept in unopened cans in a dry area at 75°F.

**If BONSTONE® A-028 is exposed to below room temperature conditions for extended periods of time, it may crystallize, giving it a stiff, grainy consistency. The product must be reconstituted before use by heating it to 150°F degrees. Stir until it becomes a homogeneous liquid.

Warranty

This warranty is limited to replacement of defective material and freight charges to destination only. Bonstone Materials Corp. is not responsible for consequential damages.

Maintenance

Designed for application in areas inaccessible to maintenance procedures.

Technical Service

Specification Service

• Specifications for various applications
• Specification writing dept. for unique applications

This information is furnished without warranty, representation, inducement, or license of any kind, except that is is accurate to the best of Bonstone Material Corporation's (BMC) knowledge or obtained from sources believed by BMC to be accurate, and BMC does not assume any legal responsibility for use of reliance upon same. User must determine if the product, process, or information described is suitable to the intended application. Before using any chemical, read its label and Material Safety Data Sheet.

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