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HarbisonWalker International (HWI) manufactures a variety of mortars for a wide range of applications, service conditions, and purposes.

All major chemistry types are represented, as well as bond types and shipping condition options. HWI's mortars have been developed to meet specific service conditions and to serve several purposes. These functions include bonding the brickwork for structural strength to reduce chemical attack from corrosive slags or gases, and to match the properties of the brick with which they are used.  

Purpose of Mortar > 

Choosing a Mortar >

Bond Technology
Selecting a bond type is a critical decision when choosing a mortar. HarbisonWalker
International’s products offer three bonding options >

AIR-SET BOND

Takes a rigid set when dried over 110°C. Air-setting mortars help maintain the strength of the bond up to the temperature at which the ceramic bond takes effect.

Consideration:
Water soluble until over 343°C

HEAT-SET BOND

Develops a ceramic set with a strong bond only at high furnace temperatures. These mortars offer expansion flexibility during initial heating.

 

PHOSPHATE BOND
Often grouped with heat-setting mortars, but these mortars see a chemical reaction occur at lower temperatures (260°- 316°C) between the phosphoric acid and ceramic oxides. This reaction imparts high strength to the mortar joint and usually offers the best resistance to severe slag attack.

Considerations:
Phosphate can be detrimental to the process
Water soluble until over 343°C

04.05.2021, HarbisonWalker International

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