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Cement allows for very solid works. There are different cements that are selected according to the type of work to be done.

Understanding the codes on the packaging of cements

The cements are made from a mixture of limestone (80%) and clay (20%), crushed and then heated to 1500° C, producing clinker which is then reduced to powder. A product is obtained which, when mixed with water, forms a plastic and unctuous paste.
As it dries, this paste traps moisture and solidifies with sand and aggregates.
There are different cements. The characteristics of each of them are indicated on the packaging in the form of a codification a bit complicated to understand... It should be noted that, for a large majority of masonry work, you will be led to use the "CEM" II - 32.5 R ", the most commonly used.

Codification of cements

Click below to read in greater detail the codification details of a cement package:

Masonry: cement: masonry

The different qualities of cement

ClassDenominationconstituentsUse / Type of work
CPA-CEM IPortland Cements95% clinker
+ 5% secondary constituents
All work in reinforced or prestressed concrete, cast on site or prefabricated. They allow quick stripping and commissioning.
CPJ-CEM IIPortland Composite Cements65% minimum of clinkerAll concrete work (whether reinforced or not): standard works in elevation, paving, masonry (some prefabricated products), soil stabilization.
CHF-CEM III
&
CLK-CEM III
Blast furnace cements5 to 64% clinker
+ granulated blast furnace
Underground work, deep foundations, large mass and in aggressive environments (injections, piles, gypseous ground), works for sewage or industrial, work with the sea or in very pure waters.
CPZ-CEM IVPozzolanic cement45 to 89% clinker
+ natural or calcinated pozzolana
Same as CEM III
CLC-CEM VSlag and ash cement20 to 64% clinker
+18 to 50% fly ash or slag
Same as CEM III

Special cements

  • Prompt Cement: quick setting cement (10 to 30 min), saving time and efficiency on the jobsite.
  • White cement it can be easily tinted for the realization of polished concrete floors or masonry furniture.
  • Dustless cement: cement without release of dust, limiting allergies and respiratory troubles.
And also:
Diluted cement or lime alone in water (without addition of sand) can only be used for very specific work and on small thicknesses.


Video Instruction: What is Masonry Cement? || Properties || Uses || Types of Cement #7 ||