Energy savings plus mechanical reinforcement and rheology control

Epoxy Compound for Patching and Surfacing Exterior Concrete by Momentive

Adhesives Formulation

Applicable Type

Waterborne Adhesives , Epoxy Adhesives

Applicable Base Polymer

Epoxies (EP)

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Because of their thermosetting molecular structure, epoxy adhesives exhibit excellent tensile-shear strength but poor peel strength unless modified with a more resilient polymer. Epoxy adhesives offer excellent resistance to oil, moisture, and many solvents. Low shrinkage on curing and high resistance to creep under prolonged stress are characteristics of many high quality epoxy adhesives. Epoxy resins have no evolution of volatiles during cure and are useful in gap-filling applications.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Epoxy resin (Epon 8131, Momentive)

xxx

Curing agent (Epikure 3071, Momentive)

C (Aggregate Portion):

Silica sand (see “Tips and Tricks”)

xxx

Typical Properties

Properties

Viscosity of binder at 25°C, cps

xxxx

Pot life at 25°C of 1 quart, hrs

xxxx

Expected working life at 25°C, hrs

xxx

Tensile strength, psi

xxxx

Tensile bond strength, psi to Dry Concrete:

xxxx

Tensile bond strength, psi to Damp Concrete:

xxxx

Tensile bond strength, psi to Aged Concrete:

xxxx

Processing

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Resulting Properties

This sand-filled formulation illustrates the use of flexibilizing epoxy resins to impart thermal compatibility with exterior concrete applications including patching of slab and joint spalls, skid-proofing loading docks and ramps, crack sealing and waterproofing, grout bonding of pre-cast concrete supports, and grouting of recessed electrical wiring, posts, tie-down fixtures, etc. Compliance with requirements of ASTM specification C-881, Type lll, Class C is indicated by test data developed from this formulation.

Source: Momentive

Tips and Tricks

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