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Composition
MM-80P is a two-component, 100% solids content epoxy joint filler. When cured, MM-80P is a gray, semi-rigid (hard but slightly resilient) filler with a Shore hardness of A90-95.

Basic Use
MM-80P was developed to fill and protect joints in industrial concrete floors that are subject to hard wheeled material handling traffic and heavy loads. Its primary function is to support such traffic and protect joint edges. MM-80P is designed for use in areas where final temperatures are from 40 ºF (10 ºC) to +120 ºF (49 ºC). It is also ideal for joint and crack repair.

Related Products
MM-80 is available in two versions; MM-80P (P for pump), with a 1:1 mix ratio, intended for use in dual-component pumps, and in the original 5:1 ratio, used primarily for manual dispensing.
Unit of Measure

Specifications

Hardness, Shore "A" at 70 ºF

 N/A A90-95

Tensile Strength

 N/A 1200 psi
Tensile Elongation at 70 ºF1
N/A 80 to 90 %

Adhesion to Concrete

 N/A 300 to 350 psi

Pot Life at 70 ºF

 N/A 10 to 15 m

Initial Cure at 70 ºF

 N/A 5 to 8 h

Light Traffic Ready at 70 ºF

 N/A 5 to 8 h

Full Traffic Ready at 70 ºF

 N/A 8 to 12 h

Mix Ratio by Volume

 N/A 1A:1B

Solids Content

 N/A 100 %

Shrinkage

 N/A Negligible

Limitations

Limitations

 N/A MM-80P is not designed for use in:
  • True expansion/isolation joints
  • Exterior joints (paving, etc.)
  • Joints exposed to extreme chemical exposure
  • Joints under VCT/seamless floor coverings (in most settings)
    As with most semi-rigid joint fillers, MM-80P may discolor if subjected to UV rays from certain types of lighting systems.

Advantages

Advantages

 N/A MM-80P is a specially rebalanced formulation of our standard MM-80 designed to achieve optimal placement and curing characteristics when dispensed through dual-component pump systems. MM-80P's 1:1 mix ratio ensures compatibility with most pump systems and permits accurate and simple ratio monitoring.

MM-80P's superior formulation yields sufficient rigidity to support loads crossing joints, protecting edges from spoiling, and sufficient resiliency to prevent brittleness throughout the floor's service life.

MM-80P exhibits low range tensile and adhesive strengths, characteristics necessary to allow the joints to open as the concrete shrinkage progresses.

MM-80P is formulated using the chemical backbone of our standard MM-80, the joint filler upon which ACI and PCA standards are based and the only joint filler that has a project-proven track record of providing the best floor joint protection in the industry for more than thirty-five years.

Correct Joint Design/Installation

Correct Joint Design/Installation

 N/A MM-80P should be installed full joint depth in saw-cut control joints (or 2" min. in joints where depth exceeds 2") per PCA and ACI guidelines. In construction (formed) joints that are not saw-cut, MM-80P should be installed 2" deep. If shrinkage crack is excessive and needs to be "choked off," it may be sealed with clean, dry silica sand as shown below (contractor's option).

Packaging and Colors

Packaging and Colors

 N/A MM-80P is available in 10 gal. (US) kits; (5 gals. Part A, 5 gals. Part B). Standard color is medium gray. MM-80P can be custom colored. Contact Metzger/McGuire for details.

Applicable Specifications

Applicable Specifications

 N/A There are no government or ASTM standards for floor joint fillers. MM-80P meets and/or exceeds the floor joint filler guidelines set forth by the American Concrete Institute (302.1 R-04 Guide for Concrete Floor and Slab Construction, ACI Committee 302), ACI 360 and PCA (Concrete Floors on Ground, Third Edition 2001, James A. Farny, PCA).

USDA/FDA/CFIA/LEED® Acceptability

USDA/FDA/CFIA/LEED® Acceptability

 N/A MM-80P is acceptable for use in floors subject to inspection/regulation by USDA/FDA and Environment Canada/CFIA. MM-80P contains no VOC's and fully complies with all LEED® green building standards.
  • 1 This property provided only for companion with other fillers. Elongation does not directly correlate to lateral expansion capability.