Types of Cement Used in RCC – OPC, PPC, PSC with Differences

RCC construction me OPC, PPC aur PSC teen major cement types use hote hain. Har cement ka apna fayda, nuksaan aur specific use-case hota hai. Ghar ya building banate waqt sahi cement choose karna strength, durability aur cost control ke liye sabse important step hai.

Aaj ghar banana ek simple kaam nahi hai. Sirf bricks aur sand se structure strong nahi hota, balki RCC (Reinforced Cement Concrete) ka role sabse zyada critical hai. Jab RCC ki baat aati hai, to sabse pehle sawal hota hai – kaunsa cement use karein? OPC, PPC ya PSC?

Zyada tar clients aur ghar banane wale log confuse ho jaate hain, kyunki contractor alag advice deta hai, market me brands ka overload hota hai aur har bag pe likha hota hai “Sabse best”. Result: ghar banane wale owner ko lagta hai sab ek hi jaise hain. Lekin sach yeh hai ki cement ka type hi decide karta hai ki aapka ghar 10 saal chalega ya 100 saal.

Is guide me hum OPC, PPC aur PSC ka detail difference, fayde, nuksaan aur real-life use explain karenge taaki aap informed decision le sako.

Highlights

• OPC (Ordinary Portland Cement): Fast strength, high-rise & bridges.
• PPC (Portland Pozzolana Cement): Long-term durability, ghar banane ke liye best.
• PSC (Portland Slag Cement): Coastal & chemical prone areas ke liye perfect.

In simple terms, RCC me cement wahi role play karta hai jo bones body me karti hain – poore structure ki strength aur durability cement ke type par depend karti hai.

OPC (Ordinary Portland Cement)

OPC sabse purana aur sabse common cement hai jo fast strength ke liye use hota hai.

Grades: OPC 33, 43 aur 53 grade available hai. RCC ke liye mostly 43 aur 53 grade use hote hain.

Advantages:

• Early strength bahut high hoti hai.
• Heavy load aur high-rise projects ke liye suitable.
• Codes aur IS standards ke sath easily compatible.

Disadvantages:

• Heat of hydration zyada hoti hai, jiski wajah se mass concreting me cracks ka risk hota hai.
• Price PPC aur PSC ke comparison me thoda zyada hota hai.
• Carbon footprint high hai.

Use Case: Bridges, flyovers, multi-storey buildings, dams.

PPC (Portland Pozzolana Cement)

PPC me OPC ke sath pozzolanic materials (jaise fly ash, volcanic ash, silica fumes) add hote hain. Ye modern construction me sabse zyada use hota hai, especially residential houses ke liye.

IS Code: IS 1489

Advantages:

• Heat of hydration low hoti hai, isliye mass concreting me safe hai.
• Long-term strength OPC se zyada hoti hai.
• Water resistance aur durability high hoti hai.
• Seepage aur chemical attack ke against strong.
• Price OPC ke comparison me low hai.
• Eco-friendly (industrial waste fly ash use hota hai).

Disadvantages:

• Early strength OPC ke comparison me slow hoti hai.

Use Case: Residential houses, RCC slabs, beams, columns, pavements.

PSC (Portland Slag Cement)

PSC me OPC ke sath blast furnace slag add hota hai jo steel industry ka by-product hai. Ye cement high durability aur chemical resistance ke liye famous hai.

IS Code: IS 455

Advantages:

• Sulphate resistance sabse zyada hoti hai.
• Coastal aur chemical prone areas ke liye perfect.
• Long-term durability sabse highest hoti hai.
• Heat of hydration bahut kam hoti hai.
• Sabse economical aur eco-friendly cement type hai.

Disadvantages:

• Early strength slow hoti hai.
• Availability sab jagah nahi hoti.

Use Case: Coastal cities (Mumbai, Chennai), chemical industries, sewage plants.

Comparison Table

Cement Type	Early Strength	Long-Term Strength	Heat of Hydration	Durability	Cost	Suitable For
OPC	High	Good	High	Medium	High	Bridges, High-rise, Heavy load
PPC	Medium	Very High	Low	High	Medium	Residential houses, RCC works
PSC	Low	Very High	Very Low	Highest	Low	Coastal, Chemical prone areas

FAQs

Q1. Ghar banane ke liye OPC, PPC ya PSC me se kaunsa best hai?
Residential houses ke liye PPC sabse balanced choice hai – cost, durability aur availability dono cover karta hai.

Q2. RCC me OPC 53 grade kyon use hota hai?
Kyuki wo high early strength deta hai jo beams, slabs aur columns ke liye zaruri hai.

Q3. Coastal area ke liye kaunsa cement use karna chahiye?
PSC sabse best hai kyunki isme sulphate resistance high hoti hai aur salty water ke against zyada durable hai.

Q4. Kya PPC OPC se sasta hota hai?
Haan, PPC 5–10% tak OPC se sasta hota hai.

Q5. PSC har jagah available hota hai kya?
Nahi, PSC har region me easily available nahi hota. Ye mostly coastal aur industrial areas me supply hota hai.

Conclusion

RCC construction ke liye cement ka sahi type select karna ghar ki safety, durability aur cost-efficiency ke liye mandatory hai. OPC high strength aur heavy projects ke liye use hota hai, PPC ghar banane ke liye sabse popular hai aur PSC coastal aur chemical prone areas ke liye perfect hai.

Ek simple rule yaad rakho: cement ka choice galat hua to ghar ki buniyaad hi weak ho jayegi. Isliye hamesha project ki location aur requirement ke hisaab se cement select karo, na ki sirf sasti price dekhkar.