DECORATIVE FLOORING__MULTI MORTAR REPAIR_Acrylic Modified Cement Based Screed for Smoothing and Patching - MCCSA
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MULTI MORTAR REPAIR

ACRYLIC MODIFIED CEMENT BASED SCREED FOR SMOOTHING AND PATCHING

DESCRIPTION

MULTI MORTAR REPAIR KIT is an acrylic modified cement-based screed used to fill and patch irregular concrete surfaces. Superior adhesive properties ensure bond to almost any surface including ceramic and painted surfaces. Easy to apply and ready to handle regular traffic hardness next day. 

 

TYPICAL APPLICATIONS

Concrete repair: Spalled concrete, repairing floors, beams and precast slabs. 

Floor screeds: Smoothing and patching with enhancing properties to difficult substrates.  

Wall rendering for enhanced adhesion, flexibility, frost resistance and preparation onto painted substrates.

 

ADVANTAGES

  • Earlier hardening 
  • Improved flexibility 
  • Doubling of tensile strength 
  • Reduced shrinkage 
  • Reduced bleeding 
  • Increased durability 
  • High resistance to water penetration 
  • Good chemical resistance 
  • Frost resistant 
  • Good adhesion to difficult substrates (25 times greater) 
  • Adheres well to brick, glass, hard bitumen, wood, and most building materials 
  • Nontoxic – used in potable water tanks 

 

TYPICAL PROPERTIES

Yield: 16L kits 

Coverage: 1.6m2 @ 10mm  

Working Time: 20 min 

Initial Set Time: 2 hours 

Hard Set Time: 12-18 hours 

Application Temperature: 15°C to 25°C 

Application Thickness: 2mm – 100mm 

Compressive Strength: 35 MPa (28 days) 

Flexural Strength: 4.0 MPa 

Tensile Strength: 3.4 MPa 

Liquid / 25kg Bag: 5L (supplied) 

 

WATCH POINTS

  • Do not re-constitute the mix after initial setting has occurred.  
  • Do not apply more than 10mm thickness per vertical surface application. 
  • Do not apply in direct sunlight where surfaces are hot, or in strong winds without using curing compounds. 

DIRECTIONS FOR USE

 

SURFACE PREPARATION

Surfaces are to be clean, sound and free of deleterious substances. Remove all laitance, oil, grease, mould oil or curing compound from concrete surfaces using wire brush, bush hammer, scabbler or other plant as appropriate. When repairing damaged concrete, ensure that all loose concrete has removed down to a firm base. Note construction joints that need to be carried through the floor to surface. 

 

PRIMING

Prime all clean and prepared surfaces with MULTI SCREED PRIMER. If inserting new reinforcing bars, coat same with MULTI METAL PRIMER prior to proceeding with the repair. 

 

APPLICATION

Mix the supplied 25kg powder with the 5L supplied liquid using a mechanical mixer. Ensure all lumps have been mixed out and spread over the primed substrate surface using a rake or trowel. Compact MULTI MORTAR REPAIR from 2mm to 100mm dependent on repair size geometry. On larger vertical areas, layers should not exceed 10mm in thickness, though several layers can be applied in quick succession, each layer being allowed to obtain initial set before the next is applied (usually 2 hours between layers, dependent on ambient temperature conditions). Finish off the final surface by smoothing off any trowel lines or ridges with a steel trowel and a flick of water after the screed has set hard enough to allow careful walk on (approximately 1 – 2 hours). Allow to set hard overnight and sand down with 100 grit sandpaper to remove any high points. Seal with a suitable sealer or coating. Alternatively scratch the first coat after application, allow to dry overnight and then apply second layer. Cure with water or with MULTI CURE 200 if dehydration of the mortar is a concern. 

 

EQUIPMENT CARE

All tools should be cleaned with water immediately after use. If delayed, equipment will need mechanical action to clean or be discarded. 

 

PACKAGING

Supplied in 25kg bags. 

 

QUALITY ASSURANCE

Multi Construction Chemicals South Africa (PTY) Ltd production and testing programs comply with all local and international testing standards. 

 

REVISION: 3.1 

The information supplied is believed to be reliable. As we do not have any control over the processing or application of the product we cannot guarantee the results to be obtained.

Users assume all risks and liability resulting from the use of this product and must confirm suitability thereof by conducting their own tests.

No guarantee is expressed or implied. Liability to the replacement of faulty material.

FOR PROFESSIONAL USE ONLY.