Chemicals Directory 

Description:

MRI 77 is a ready to use cement based repairing mortar requiring only the addition of water. For getting stronger bond or mechanical and chemical strengths, addition of CHEMEX -AD6 adhesive to the mixing water is recommended.

Uses:    

MRI 77 is used for repairing of concrete surfaces such as:   

-         Pre-cast concrete elements

-         Fair- faced concrete

-         Concrete beams and columns

Advantages:

MRI 77 is an easy to use and economical powder with little or no wastage.It possesses high strength due to good adhesion and shows little tendency to crack.

Coverage:

Approx. 2 to 5 Kg./Sq.m depending on the substrate.

Surface Preparation:

Concrete surface must be clean, free from laitance, oil and grease and wet.

Mixing Ratio:

Add three parts of MRI 77 by volume to one part water and mix into a stiff mortar.

Application:

Apply by trowel to the required area, for deep patches, 2 layers may be required.

Add 3 mm sand to the first thicker layer.Add max. 2 parts sand to one part RM–1

Technical Data:

     Type:                                         Powder

     Color:                                            Gray

     Bulk Density:                          1.3 kg/lit

     Shelf Life:   6 months when unopened

     Storage Condition:                         Dry

     Pot Life:                      20 min. at 20 °C

     Compressive Strength:        250 kg/cm²

     Flexural Strength:                 60 kg/cm² 

     Bond Strength:                     10  kg/cm²

     Packing:                              25-kg. bags