Basic Concepts for Civil Engineers for Interview and Campus preparation- Cement

The manufacture of cement consists of grinding the raw materials (calcareous and argillaceous stones consisting silica, alumina and iron oxide ) and mixing them intimately in a certain proportion. it is then burnt in a large rotary kiln at temeperature of 1500C, when the material sinters and partially fuses into balls known as clinker. The clinker is cooled and ground to fine powder with some gypsum added, and the resulting product is Commercial Portland cement.
The main Components of Cement are
 Lime - 63%
Silica - 22%
Alumina - 6%
Iron Oxide - 3%
Magnesium Oxide - 2.5%
Sulphur trioxide - 1.5%
Alkalies - 0.5%

 The lime, silica and iron oxide imparts strength to cement , while alumina gives quick setting property. The alkalies when in excess, causes efflorescence.

The Bougue's Components (Components of Cement Clinker)
Tri Calcium Silicate -C3S- 40%
Di Calcium Silicate - C2S- 32%
Tri Calcium Aluminate - C3A - 10.5%
Tetra Calcium Alumino Ferrite - C4AF- 9%

7 comments:

  1. I could not refrain from commenting. Very well written!


    Here is my blog post; buy instagram followers

    ReplyDelete
  2. “Benjamin Briel Lee was very professional at all times, keeping me aware of everything that was happening, If I had any questions he was always available to answer. This was my first home purchase, I didn’t know much about the loan process, he made it very easy to understand the things I had questions about. I really enjoyed working with him.”  
    He's a loan officer working with a group of investor's who are willing to fund any project or loan you any amount with a very low interest.Contact Benjamin Briel Lee E-Mail: lfdsloans@outlook.com  Whats-App Number: +1-989-394-3740.

    ReplyDelete
  3. Thank you so much for sharing this pretty post, it was so good to read and useful to improve my knowledge as updated one, keep blogging.
    Temporary Cooling Service UAE

    ReplyDelete
  4. My name is Hussain, I am a Jordanian citizen. But I live in Austria. I was trying to get a loan to start my business, but nothing worked for me until I was surfing the internet and seeing someone testify about how she got a loan from loan credit institutions, so I copied the contact (loancreditinstitutions00@gmail.com) so I contacted them and applied for a loan of $ 25,000 they approved the loan and granted it to me., now I'm up and running and everything is going smoothly. If you want to take a loan, please contact them via email: loancreditinstitutions00@gmail.com or use Whatsapp: +393509811524. and apply.

    ReplyDelete
  5. Pročitajte moje svjedočanstvo o tome kako sam dobio brzi zajam od pouzdane tvrtke. Pozdrav, ja sam gospođica Veronica iz Hrvatske. Bio sam u financijskoj situaciji i trebao sam kupiti kuću. Pokušao sam potražiti zajam od različitih kreditnih tvrtki, privatnih i korporativnih, ali nije išlo, a većina banaka mi je odbila kredit. Ali kako bi Bog htio, upoznali su me s privatnim zajmodavcem koji mi je dao zajam od 90,000 eura i danas imam vlastitu kuću i vlasnik sam tvrtke i trenutno mi je dobro, ako morate ići na tvrtka za osiguranje zajma. bez kolaterala, bez provjere kreditne sposobnosti, samo 3% kamatna stopa i supotpisnik s boljim planovima i rasporedom otplate, kontaktirajte Davidson Albert Loan (davidsonalbertloan@gmail.com). On ne zna da to radim, ali sada sam tako sretna i odlučila sam dati ljudima više informacija o njemu i želim da ga Bog još više blagoslovi. Možete ga kontaktirati putem njegove e-pošte. davidsonalbertloan@gmail.com
    {WhatsApp: +38761545894}

    ReplyDelete
  6. Bună ziua, Știți că există o modalitate prin care puteți câștiga bani fără contact de stres (THOMAS FREDDIE) pentru un [CARD ATM] gol astăzi și să fiți printre norocoșii care beneficiază de aceste carduri. Acest card ATM gol PROGRAMAT este capabil să pirateze orice bancomat de oriunde în lume. Mi-am luat cardul de master de la un Hacker bun de pe internet, cu acest card ATM pot colecta 50.000,00 EUR în fiecare zi prin contacte: thomasunlimitedhackers@gmail.com
    Am fost foarte sărac, dar acest card m-a făcut bogat și fericit. Dacă doriți să beneficiați de această oportunitate de a deveni bogat și de a vă stabili afacerea, atunci aplicați pentru acest card Master, sunt atât de fericit pentru că l-am primit săptămâna trecută și am l-au folosit pentru a obține 277.000,00 EURO de la THOMAS FREDDIE UNLIMITED Hackers oferă cardul doar pentru a-i ajuta pe cei săraci și nevoiași și OFERĂ ȘI ASISTENȚĂ FINANCIARĂ. obține-l pe al tău de la THOMAS FREDDIE UNLIMITED HACKERS astăzi. Vă rugăm să-i contactați prin e-mail thomasunlimitedhackers@gmail.com

    ReplyDelete
  7. أنا مسرورة للغاية بتجربتي في شركة قروض الاتحاد الأوروبي. لقد حصلت على قرض بقيمة 90 ألف يورو وأعجبت باحترافهم وكفاءتهم. كانت عملية التقديم سهلة، وكان الموظفون متاحين دائمًا ومتجاوبين. لقد جعلوا كل شيء سلسًا وخاليًا من التوتر. أوصي بهم بشدة! اتصل عبر WhatsApp +393510709856، Telegram +393509828434، أو البريد الإلكتروني EuropeanUnion_loansyndication@outlook.com.

    — ماريا دا سيلفا بيريرا

    ReplyDelete