Versatile Design｜SpecPrep SB Structural Concrete Bonding Agent｜ Other Products

SpecPrep SB is a three-component bonding adhesive that creates a structural bond between fresh and existing concrete, and doubles as an anti-corrosion coating for rebar
SpecPrep SB offers up to a 24-hour open time and resists penetration of water and chlorides, though it won't form a vapor barrier after cure. It's suitable for bonding fresh concrete or repair mortars to existing concrete, and for protecting steel reinforcement during restoration.
Key Features & Benefits

Long, up to 24-hour open time
Bonds fresh concrete to hardened concrete and steel to fresh concrete
Anti-corrosion coating for steel reinforcement
Resists water and chloride penetration
Ready to use — do not thin with solvents

Application Instructions

Ensure surfaces are clean and structurally sound, removing oil, grease, dirt, laitance, rust, and curing compounds
Abrasive blast cleaning or mechanical removal is recommended to achieve CSP 5-7 per ICRI Guideline 310.2-1997
Apply to a saturated-surface-damp (SSD) substrate using a stiff brush or hopper gun
For bonding, apply at 65-75 sq ft per gallon to a minimum thickness of 20 mils
Acts as an effective bonding agent for up to 24 hours at approximately 65°F

Technical Data Summary

Compressive Strength (ASTM C109): 3,200 psi at 3 days, 6,200 psi at 7 days, 8,250 psi at 28 days

Flexural Strength (ASTM C348): 1,285 psi at 28 days

Packaging
Available in 1-gallon units (also offered in 3.75-gallon units).
Supporting Documents
Safety Data Sheet (SDS)
Technical Data Sheet (TDS)
Brand:SpecChemSKU:PREPSB-3.7Tags:Cementitious Products and LiquidsSize:1 Gallon (Pack of 6), 3.7 Gallon