Masonry reinforcement FAQ

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1. Why should I add masonry reinforcement? 

2. Can I use any type of reinforcement to any type of masonry?

3. How do I adjust Murfor® Compact to the wall width? 

4. How do I apply Murfor® Compact? 

5. For what applications can I use Murfor® Compact I ? 

5.1 stress concentrations

5.2 Long walls 

5.3 Point loads 

5.4 Partition walls susceptible to deformation

5.5 Stack bonded masonry

5.6 Corner and T-connections

5.7 Laterally loaded wall panels

6. For what applications can I use Murfor® Compact E?

6.1 Stress concentrations 

6.2 Long walls 

6.3 Gables 

6.4 Differential settlements 

6.5 Facade support  

6.6 Stack bonded masonry

6.7 Laterally loaded wall panels

6.8 Masonry beam design 

6.9 Claustra masonry 

7. How do I anchor the masonry? 

8. How do I place the water retaining membrane?

9. Is Murfor® Compact ETA certified? 

Answers


1. Why should I add masonry reinforcement? 

Masonry has high compressive strength and low tensile strength. Adding reinforcement enhances the structural performance and strength of the masonry by increasing its in- and out-plane capacities. This increases crack control in the structure. 
Reinforcement benefits both structural and traditional masonry. 

2. Can I use any type of reinforcement to any type of masonry? 

Any reinforcement is better than no reinforcement. However, if your masonry is to last at least a couple of decades it is important to choose a type of masonry reinforcement that is adapted to the environment in which the structure is located and the materials from which it is build.  

Bekaert offers two types of Murfor® Compact: 

• Murfor® Compact I for use in a dry environment (MX1). 
• Murfor® Compact E for masonry exposed to a damp environment (MX3 and MX4).
 
3. How do I adjust Murfor® Compact to the width of the wall? 

Murfor® Compact is available in two convenient widths that can be matched to any brick width. Contact us for more detailed information. 


Murfor® Compact I
Murfor Compact I - 50 

Mesh of 7 steel cords
Murfor® Compact I-50 

Murfor Compact I-100 

Mesh of 14 steel cords
Murfor® Compact I-100

   

Murfor® Compact E

Murfor Compact E-35 

Mesh of 7 stainless steel cords
Murfor® Compact I-35 

Murfor Compact E-70 

Mesh of 14 stainless steel cords
Murfor® Compact E-70

    

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4. How do I apply Murfor® Compact?
Applying Murfor Compact - step 1

Apply Murfor® Compact
to the blocks 

Applying Murfor Compact - step 2 

Apply a layer of mortar.

How to apply Murfor Compact - step 3 

Put the blocks in place. 

  
bed joint reinforcement overlaps
Use a minimum overlap of 250 mm.

Masonry reinforcement overlaps Alternate the alignment of the overlaps
 
  
 

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5.1 Stress concentrations 

Stress concentrations around window openings can be absorbed by applying two layers of Murfor® Compact I above and below the window.
  
2 layers of Murfor Compact reinforcing masonry around window opening - stress concentrations 

With two layers of Murfor® Compact I 

Reinforcing masonry against stress concentrations  

Without two layers of Murfor® Compact I

 
5.2 Long walls 

Shrinkage or expansion of materials can lead to cracks in the masonry. Murfor® Compact I allows for larger gaps between movement joints.
 
masonry reinforcement in long walls  


With Murfor® Compact I
Masonry reinforcement in long walls  
Without Murfor® Compact I

5.3 Point loads

Point loads, e.g., ball joints, are highly concentrated loads that cause tensile stress and cracks in the masonry. Using a concrete beam as support interferes with the homogeneous character of the masonry. 

Depending on the volume of the load, three to five of the underlying joints can be reinforced with Murfor® Compact I. The reinforcement ensures the even distribution of the load. It is important to check that the contact stress between the point load and the masonry is smaller than or equal to the calculated value of the compressive strength of the masonry. 


 
5.4 Partition walls susceptible to deformation

Partition walls on a floor plate will start to crack in different places where there is too much sagging. To prevent this, you can reinforce and isolate the wall from the support with Murfor® Compact I.
 
 
   
Masonry reinforcement in partition walls      


5.5 Stack bonded masonry

Murfor® Compact I guarantees stability of the masonry with and without a stack bond. For masonry with a stack bond, the bricks are placed directly above each other, meaning reinforcement is essential for wall stability. With masonry without overlaps, reinforcement is required to compensate for insufficient bending bonding.
 

 
masonry reinforcement in long walls    
Reinforcement in stack bonded masonry  
       

 

5.6 Corner and T-connections

Murfor® Compact I reinforcement, combined with Murfor® EFC/Z wall angle elements provide the perfect corner connection. Finish corners with 140 mm wide blocks with Murfor® Compact I-100. Corners with 200 mm wide blocks should be finished with 2 x Murfor® Compact I-50.



Masonry reinforcement in corners and Ts




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5.7 Laterally loaded wall panels

Wind loaded walls Murfor® Compact allows longer or thinner wall partitions that can withstand high wind loads. Retaining walls Cellar walls, retaining walls or silo walls are exposed to considerable stresses from lateral loading. Murfor® Compact increases the loading capacity of the wall span between the columns.

Masonry reinforcement on loaded panel walls

6.1 Stress concentrations

Murfor® Compact E provides additional reinforcement in places with high stress concentration: 

• With level differences 
• At the wall base 
• Above window and door opening
• Under window sills Murfor® Compact E

Masonry reinforcement - stress concentrations 2   
Masonry reinforcement - stress concentrations 2 
       

 

6.2 Long walls  

Shrinkage or expansion of materials can lead to cracks in the masonry. Murfor® Compact E allows for larger gaps between movement joints. These larger distances depend on: 

• Type and color of the facing brick 
• Type of mortar or glue 
• Type of joint 
• Age of the bricks 
• Orientation 
• Temperature at implementation 
• Type of obstacle

 

Masonry reinforcement in long walls

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6.3 Gables

Improve the stability of gables by reinforcing a joint every 300 mm with Murfor® Compact E. If the gables are more than 8 m high it is recommended to reinforce every 200 mm with Murfor® Compact E. Always take the recommendations for long walls into account.

Masonry reinforcement in gables


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6.4 Differential settlements

Masonry on partly hardened soil or uneven terrain is susceptible to deformations and stresses. This is why it is recommended to reinforce the masonry.

Recommended reinforcement: 

• Reinforce the first 5 joints and foundation with Murfor® Compact E. 
• Reinforce masonry located higher up every 400 mm

masonry reinforcement in differential settlement

 

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6.5 Facade support

Prevent cracks by reinforcing one or two joints above the facade support with Murfor® Compact E.

 
Masonry reinforcement in facade supports

 
 

6.6 Stack bonded masonry

Reinforce the masonry every 300 mm with Murfor® Compact E to compensate the insufficient bonding in stacked masonry.

Masonry reinforcement - stack bonded masonry

6.7 Laterally loaded wall panels
Murfor® Compact allows longer or thinner wall partitions that can withstand high wind loads.


Masonry reinforcement on loaded panel walls


6.8 Masonry beam design 

Masonry beams with Murfor® Compact E absorb the bending moments over windows and doors. They can be used with soldier- or stretcher course. 

Note: 
These beams are only suitable for non-bearing masonry, using normal masonry bonding. 
The mortar quality requires minimal compressive strength of M5 and a minimal bond strength of 0.20 N/mm².
 

Masonry reinforcement - soldier course
 Soldier course 
Masonry reinforcement stretcher course 
Stretcher course 
   
 

6.9 Claustra masonry 

 Murfor® Compact E is available in different widths and it is extremely flexible in use, which means that it is the perfect reinforcement for claustra masonry.

masonry reinforcement in claustras
 

7. How do I anchor the masonry? 

• Create an anchor of at least 50 cm long. 
• Apply at least 15 mm of mortar below and on top of Murfor® Compact when placing it on the joint.
8. How do I place the water retaining membrane?

Masonry reinforcement -  water retaining membrane
 

 

9. Is Murfor® Compact ETA certified?
Murfor® Compact is ETA 18/0316 certified for structural use, which allows products to achieve CE marking. The CE mark proves that the product is tested and meets the European requirements for safety, health and environmental protection. It applies to products manufactured in the European Economic Area (EEA) and products that are manufactured outside and then marketed in the EEA.