Portland Limestone Cement (PLC)

Portland Limestone Cement (PLC) is widely used thanks to properties such as the high adhesion of mortar and building units, including blocks and bricks. By reducing the permeability of concrete, as the pores of the concrete are filled with fine limestone particles, this type of cement achieves the desired workability with a lower water requirement.

Some of the properties of this type of cement are given in the table below:

Chemical Properties

Composition	Value
MgO	≤ 5
SO₃	≤ 3.5
Na₂O	≤ 1
K₂O	≤ 1
L.O.I	≤ 10
Cl	≤ 0.05

Physical Properties

Physical property	Value
Autoclave expansion (%)	≤ 0.2
Blaine (cm²/gr)	≤ 4000
Initial setting time (minutes)	≥ 120
3-day compressive strength (kg/cm²)	≥ 210
7-day compressive strength (kg/cm²)	≥ 260
28-day compressive strength (kg/cm²)	≥ 440