Architectural Building Materials course

1. Southeast University
Department of Architecture
ARC134
SHD
Building Materials

2. Cement
Cement is a binding material used in architectural construction. It is a product
obtained by the calcination(heating to high temperatures in air or oxygen) at a very
high temperature , an intimate mixture of correctly proportioned calcareous
argillaceous materials. The calcined product which is called clinker is then finely
pulverized by grinding into a fine powder and is finally mixed with calcium sulphate or
gypsum to obtain cement
•Natural cement
•Artificial cement
Classification of Cement

3. Cement
•Natural cement (Hydraullic Lime)
Manufactured by burring and crushing to powder natural stones
containing 20 to 30 percent of clay , the remainder being carbonate of
lime.
•Artificial cement
Known as Portland cement or normal setting cement
Composition of portland cement
•Calcareous material- compounds of calcium and magnesium
•Argillaceous material- silica, Alumina and oxides of iron

4. Mineral constituents of cement

5. Acids and Alkaline constituents of cement

6. Functions of Various Ingredients of Cement
•Lime (CaO)
•Silica
•Alumina
•Magnesia
•Iron Oxide
•Calcium Sulphate (CaSO4)
•Sulphur Trioxide
•Alkalies

7. Properties of cement
•Hydration
•Setting
•Fineness
•Soundness
•Strength
Manufacture of cement
•Wet process
•Dry process
General Process of Manufacturing

8. Manufacture of cement
Wet process
•Preparation of cement slurry
•To obtain cement clinkers
•To prepare cement

10. Manufacture of cement
Dry process
•The calculated proportion of both calcareous and argillaceous materials are grounded and mixed in dry state.
•The finely ground mixture is then fed into the rotary kiln to prepare cement clinker as in the wet process.

11. The major Cement grinding are located mainly at 5 zones in the country and they are Mukterpur,
Munshiganj on the bank of the river Dhaleshwari; Narayanganj on the bank of the river Shitalakkhya;
Meghnaghat on the bank of the river Meghna, Chittagong, and Mongla.
The attempt to produce cement in Bangladesh dates back to 1941 when the first Cement Factory called
“Chattak Cement Factory Ltd” (formerly known as Assam Bengal Cement Company Limited) was
established in Sylhet, north-eastern part of the country, during the regime of British India
Cement Industries in Bangladesh