Composition of cement includes?
- Sand, clay, iron
- Limestone, clay, gypsum
- Cement, gravel, water
- Lime, coal, ash
Explanation
The main components of cement are limestone, clay, and gypsum
These materials are combined and heated to produce clinker, which is then mixed with gypsum to form cement.
Limestone: Provides calcium oxide (CaO), which is the primary constituent for cement's strength.
Clay: Contains silica (SiO2), alumina (Al2O3), and iron oxide (Fe2O3), which are necessary for the cement's hydraulic properties.
Gypsum: Added to control the setting time of the cement by slowing down the hydration process.
Related MCQs
- Temporary water connections
- Underground and permanent water-supply lines
- High-temperature steam lines
- Drainage of rainwater only
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10–20 minutes
- 30–60 minutes
- 2–4 hours
- 12–24 hours
اس سوال کو وضاحت کے ساتھ پڑھیں
- Vertical drop fall
- Glacis fall
- Montague type fall
- Inglis fall
اس سوال کو وضاحت کے ساتھ پڑھیں
آکسیجن زیادہ تر عناصر کے ساتھ عمل کرکے دو عنصری مرکبات بناتی ہے جنہیں کیا کہتے ہیں؟
- Bases
- Oxides
- Acids
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
پانی اور کاربن ڈائی آکسائڈ کے سالمے مل کر کیا بناتے ہیں؟
- Nitric acid
- Carbonic acid
- Sulfuric acid
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
