MM-80 SPEC DATA

1. Product Name
MM-80 Semi--Rigid Epoxy Joint Filler

2. Manufacturer
METZGER/McGUIRE 
P.O. Box 2217  CONCORD, N.H.  03302  (U.S.A.)

TOLL-FREE: (800) 223-6680 • PHONE: (603) 224-6122
FAX: (603) 224-6020 • E-MAIL: specmm80@aol.com
Web Site: www.metzgermcguire.com

3. Product Description
Composition
MM-80 is a two-component, 100% solids content epoxy joint filler.  When cured, MM-80 is a gray, semi-rigid (hard but slightly resilient) filler with a Shore hardness of A90-95 and D D50-55.

Basic Use
MM-80 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-80 is designed for use in areas where final temperatures are from 40°F (10°C) to +120°F (49°C).  It is also ideal for joint and crack repair.

4. Limitations
MM-80 is not designed for use in:
• True expansion joints
• Exterior joints (paving, etc.)
• Joints exposed to extreme chemical exposure

MM-80 may change color if subjected to UV rays from sunlight or certain lighting systems.

5. Correct Joint Design/Installation
MM-80 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-80 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).  DO NOT USE COMPRESSIBLE BACKER ROD IN SAW CUT CONTROL JOINTS! Compressible rod may be used 2" down in construction joints. 

TECHNICAL DATA

6. Color and Packaging
Standard color is concrete (charcoal) gray.  MM-80 can be custom colored.  Contact Metzger/McGuire  for details. 
MM-80 is available in 1 gal. (US) kits (1 gal. can Part A, 1 qt. can Part B) and 30 gal. (US) kits (6-5 gal. pails Part A, 1-5 gal. pail Part B).

7. Applicable Specifications
There are no government or ASTM standards for floor joint fillers. 
MM-80 meets and/or exceeds the floor joint filler guidelines set forth by ACI 302 (Guide for Concrete Floor and Slab Construction, ACI report 302.1 R-96), ACI 360 and PCA (Concrete Floors on Ground, Ralph  E. Spears,  PCA).

8. Advantages
MM-80's superior formulation yields a filler sufficiently rigid to support heavy loads crossing joints, protecting joint edges from spalling, and sufficiently resilient to prevent brittleness throughout the life of the floor.

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

MM-80's relative hardness has been gradually increased through the years to reflect increasing demands on floors created by heavier loads and smaller, harder vehicle wheels. 

MM-80 is the joint filler which American Concrete Institute and Portland Cement Association standards are based upon.  You can specify and use MM-80 with the confidence that comes from a project-proven track record of more than thirty years and with the knowledge that you are relying on the best floor joint protection available in the industry.

9. USDA/FDA Approval
MM-80 was approved by USDA more than 25 years ago and is acceptable for use in floors subject to USDA and FDA inspection and regulation.  See section 19 for additional information.

10. Technical Assistance
Complete technical support and literature are available from authorized distributors, through our web site (www.metzgermcguire.com) or by contacting our New Hampshire headquarters at (800)223-MM80.

11. Quality Installation Program
When you specify "MM-80, No Substitutes" your project is automatically eligible for our Quality Assurance Program.  This project-tracking program helps ensure that the MM-80 is properly installed per plans and specs.  There is no charge for this unique service.  Please call for details.

12. Where to Specify and File
MM-80 is exclusively for use in concrete floors and thus should always be referenced in 03251 (expansion/contraction joints) &  03300
(cast-in-place concrete).  It is not a sealant and should not be specified as part of 07900, other than for cross reference.

13. Availability
MM-80 is available through quality construction supply distributors in most major cities (listing available at www.metzgermcguire.com) or through our New Hampshire headquarters.

14. Installation
The following instructions are abbreviated.  Complete instructions are provided with each shipment.

When to Install
The installation of MM-80 installation should be deferred as long as possible (ACI recommends slab cure of 60-90 days plus).  A minimum slab cure of 30 days is also recommended.  Area should preferably be stabilized at final operating temperature prior to installation.

Joint Preparation
Joints should be completely free of saw laitance, dirt, debris, coatings/sealers and frost or visible moisture.  Joint cleaning procedures must accomplish the removal of all of the above.  Failure to do so will compromise adhesion.  Simply "raking" debris out of joint is not an acceptable cleaning method.  Preferred methods of joint cleaning include using a dustless concrete saw with diamond blade (ensure blade is slightly wider than joint or clean both sides) or sandblasting.  No primer is needed.  If unusual conditions are present, contact Metzger/McGuire.

The applicator may, at his option, choke-off the shrinkage crack at the base of the joint with a 1/4" maximum layer of clean, dry silica sand.  Do not use compressible backer rod (Ethafoam, etc) in saw cut joints.  The applicator may use a compressible backer rod in through-slab construction (cold) joints ONLY, and if used the rod must be placed at a minimum depth of 2" below floor surface. 

Prior to Dispensing
Caution: Thoroughly read MSDS and complete installation instructions prior to opening containers or attempting to dispense.

Mixing
Use a variable speed drill at low RPM and a paint mixing paddle (Jiffy or similar) to mix MM-80.  Mix Part A thoroughly before combining.  Gradually blend  Part B into Part A and mix for approx. 11/2 minutes or until thoroughly blended.  Do not dilute or alter material.  Mix entire kit.

Dispensing
MM-80 has a viscosity similar to a medium weight motor oil.  It can be poured from can, but best results are obtained by dispensing material through a bulk-type caulking gun or a dual-component dispensing pump ratioed at 5:1.  Use of gun or dispensing machine ensures a neater application and full depth penetration.  MM-80 should be installed using a two pass method.   The first pass should fill the joint to within 1/2" of the floor surface.  Within 30-60 minutes overfill joint with a second pass.  Check joints periodically to ensure low spots do not occur due to seepage. Do not fill flush and leave as low filler profile is likely to occur.

Allow material to cure into solid (approx. 6-8 hours minimum) and shave or grind material flush with floor surface.   If shaving, heat material lightly with propane torch or other heating source prior to shaving to ease the shaving process and ensure a smoother filler profile.

Any overfill not removed during razoring may leave a slight stain on concrete.  The degree of staining will depend on the surface density (porosity) of the slab.  The stain will gradually fade as a result of subsequent traffic and floor cleaning procedures.

Clean-Up
Spills of unmixed components can be cleaned up with solvent (Toluol, Xylol, MEK , Denatured Alcohol, etc).  Cured product can be scraped or shaved off floor and tools.  For skin contact use SBS#33 or equal.

15. Maintenance
Once cured, MM-80 is basically maintenance free.  If joints should open after installation due to concrete shrinkage, fill any voids exceeding credit card width with additional MM-80 or M/M's Spal-Pro 2000.  Refer to Joint Filler Tech Series Sheet T-5 for additional information on joint filler separation causes and corrections.

16. Coverage Rates

17. Shelflife and Storage
MM-80  has a guaranteed shelf life of 12 months if containers remain unopened.  Store in dry, cool areas away from excessive heat, freeze/thaw and sunlight.  See complete installation instructions for information.

18. Safety
This product is for industrial use only. Use only in well ventilated areas.  Practice all normal jobsite safety precautions (clear work area, etc). Thoroughly read and understand  MSDS and installation instructions for additional information prior to using material.

19. Food Related Facilities
USDA prohibits the use of any chemicals in areas where existing food or food packaging can be contaminated.  See "Food Warning" in installation instructions.

WARRANTY: Metzger/McGuire Co. solely and expressly warrants that its product shall be free from defects in material and workmanship for 12 months from the date of purchase.  Unless authorized in writing by an officer of Metzger/McGuire, no other representations or statements made by Metzger/McGuire or its representatives, in writing or orally, shall alter this warranty.  Metzger/McGuire makes no warranties, implied or otherwise, as to the merchantability or fitness for ordinary or particular purposes of its products and excludes the same.  If any Metzger/McGuire product fails to conform with this warrant, Metzger/McGuire will replace the product at no cost to the purchaser.  Purchaser's sole remedy in any case shall be limited to the purchase price or replacement cost of product and specifically excludes labor and the cost of labor, lost wages and opportunity costs, and all other possible incidental, consequential or special damages resulting from any claim of breach of warranty, breach of contract, negligence or any legal theory.   Any warranty claim must be made within one (1) year from the date of material purchase.   Metzger/McGuire does not authorize anyone on its behalf to make any written or oral statements which in any way alter the installation procedures or written installation instructions published in its product literature or on its packaging labels.  Any installation of Metzger/McGuire products which fails to conform with such installation information or instructions shall void this warranty.  Purchaser shall be solely responsible for determining the suitability of Metzger/McGuire's products for the purchaser's intended purpose.