A cement mortar allows different types of use in the application

Cement mortar is probably the most widely used building aid in home and building construction. In addition to masonry, it is used as a floor substructure and as a plaster for exterior and interior use. In some cases, it forms smaller foundations and serves as a universal adhesive for all concrete and stone components.

Areas of application and types of applications

Cement mortar is a kind of universal adhesive and bonding agent for all building components made of concrete and stone. The main application types and applications are:

  • Grout for bricks made of stone, clay or concrete
  • Fixing mortar for window sills, door frames and lintels over doors and windows
  • As a cement plaster for the outside
  • As a cement plaster in the interior including wet rooms such as the bathroom
  • Cement mortar is the base material when cement screed is chosen instead of floating screed or anti-hydration screed
  • In a limited scope and dimension, cement mortar can serve as a foundation

Property adaptation by additives

In the almost unmanageable selection of possible mixing forms and additive additions, the right mortar can be found for every application. For the main components of sand, water and cement, additives are mixed in which alleviate or enhance the following properties:

  • Adhesive and adhesive ability
  • Density after setting
  • Compressive strength
  • water resistance
  • moisture resistance
  • load capacity
  • Optical structure
  • Optical surface effect and coloring
  • Elasticity, shrinkage and expansion behavior
  • Frost resistance
  • Sound-absorbing effect
  • Thermal insulation effect
  • Processing ability and pot life
  • Drying and setting time
  • Required application strength for the required adhesion and stability

Mechanical function and resilience

Mechanically cement mortar must withstand the different loads during its use. For this you are divided into five groups according to the so-called masonry standard DIN 1053. Only the two highest mortar classes (MG III & MG IIIa) are pure cement plasters. A load-bearing cement mortar must carry at least ten Newton per square millimeter, in the highest class twenty Newton per square millimeter.

Special lightweight and thin-bed mortar can reduce processing volume and effort according to structural requirements. Special mortars without supporting tasks, such as sewer and manhole linings, have to stick stronger than supports. In the construction of a conventional and average family house, between twenty and thirty types of mortar are used.

Tips & Tricks

When looking for and choosing, pay less attention to the manufacturers' messages and promises regarding convenient and easy processing. The technical and static properties determine the suitability.

Video Board: Understanding Concrete, Cement, and Mortar