Strong-Seal MS-2®A Economical Cementitious Mortar

  • Versatile Application: Adaptable to vertical, horizontal, and overhead repairs
  • Infiltration Prevention: Effectively stops inflow and infiltration, providing a robust liner to prevent leaks and groundwater intrusion
  • Zero Shrinkage: Maintains dimensional stability with no shrinkage (ASTM C596) at 28 days

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Product Description

Strong-Seal® MS-2®A 60 lb. bag is a cost-effective, fiber-reinforced, spray-applied cementitious mortar designed to stop infiltration and restore structural integrity in concrete and masonry structures. Engineered to create a durable, impervious monolithic liner, MS-2®A fills all voids and achieves a mechanical and chemical bond to the existing substrate. When applied to a minimum 1/2-inch thickness, this product forms a robust protective layer with compressive and flexural strengths that exceed those of the original structure.

Compared to its counterpart, MS-2®C, which offers higher early strengths and added protection in mild hydrogen sulfide environments, MS-2®A is the ideal solution for projects focused on cost efficiency and long-term structural rehabilitation. Both products are designed to handle a wide range of infrastructure repairs, including manholes, pipelines, tanks, and tunnels, providing lasting protection and performance in even the most demanding conditions.

Product Specifications

Packaging

60 lb Bag

Compressive Strength

ASTM C109

>9,000 psi | 28 days

Flexural Strength

ASTM C293

>1,200 psi | 28 days

Tensile Strength

ASTM C496

>800 psi | 28 days

Freeze/Thaw Resistance

ASTM Cc666

Pass, No Damage | 300 Cycles

Bond Strength

ASTM C882

>2,000 psi | 28 days

Drying Shrinkage

ASTM C596

0% | 28 days @ 90%RH

Wet Unit Weight

ASTM C138

134 ± 5 lb/ft3

Yield per Bucket

0.55 ft3 / 13.0 ft2 @ ½” thick