Module 4 Lecture -1 Cement: Hydration

Lecture Series on Building Materials and Construction by Dr .B.Bhattacharjee, Department of Civil Engineering,IIT Delhi. For more details on NPTEL visit nptel.iitm.ac.in

[@CharlieKelloggPilot]

This has helped to harden my Cement Knowledge. May my understanding form early like tricalcium silicate, (Ca3SiO) but become strong over time like dicalcium silicate, (Ca2SiO4), and remain heated by the calcium hydroaluminates.

[@markeliastoronto]

Thumbs up , it realy cemented my understanding ;)

[@ronymelko9402]

hi, thank you so much for this detailed and informative session on Cement!! just a question towards the end of the video it was explained that because of capillary pores that strength of cement is compromised but my understanding earlier in the video it was because of gel pores !! any explanation on which one is the cause for shrinkage and weakness of the cement paste? thank you

[@arupdas1949]

The composition of a cement brand of O.P.C. is given below :
C3S=55%, C2S=18%, C3A=11%, C4AF=7%. If the Sio2 content of the raw material is 20% and So3 contents is 2%, find the content of the Cao in the raw material. please give the solution of this math.

[@sanamusthafab8782]

Nice...thanku sir

[@gautamdas3320]

Thank you sir

[@poojasuresh7457]

Thanku sir

[@abhiramicb7497]

Thanku sir for this amazing lecture 👏

[@9345-o7e]

thanks for uploads

[@parusharora9499]

Value of 1.23 ? Where did the value come from?

[@sundeepmaurya9362]

Sir i want to know that if some one ask me - what is chemical composition of cement?what will be my answer

[@nooryaseen9388]

May you please cite here the original article demonstrating the diagram for physicochemical changes of hydration phases (Video time: 19:30 to 25:30 minutes).

[@hotshotlovey2567]

nice video..but professor looks a bit confused saying "needle of vicat penetrates 5 to 7m from bottom".#canbetakencareof

[@jamyangpelmo5214]

Very helpful. Any one working in cement industry?

[@booksourexistence2153]

Thanks a lot for the great video

[@aswathyasokan2507]

Superb lecture sir

[@jasna4491]

Thankyou sir
Very useful

[@RAHULSHARMA-qp5wy]

Gel porosity is not understand properly

[@thesam20064]

Thanks sir😜😇

[@adarshrameshm351]

Thank you sir..

[@demudukolli4854]

sir could u please give me ans that which was the first bogue's compound react with water when added to cement c4AF or C3A

[@booksourexistence2153]

There r two compounds which r act first... Tricalciumaluminate and tricalcium silicate.... Tricalcium alumina te reacts with water and produces enormous heat only.... but tricalcium silicate reacts with water and produce early strength..... Thanks

[@demudukolli4854]

thanks for ur reply.Then when will tetracalcium aluminate ferrite reacts???

[@sanketvikramsinhshinde5356]

@@demudukolli4854 C3A REACT FIRST

[@hsahrawat]

Ferrite reaction also starts quickly as water is added, but then slows down, probably because a layer of iron hydroxide gel forms, coating the ferrite and acting as a barrier, preventing further reaction.

[@hotshotlovey2567]

C3A....Due to its high affinity towards water..it also has high heat of hydration

[@RAHULSHARMA-qp5wy]

.49/.72=means?

[@nsrajput4675]

great. & thsnks

[@bippukt]

Very helpful. Thanks :)

[@maninderbisht7233]

sorry to say but video quality is very poor

[@sunilvhudali6994]

s bro

[@blitzhope]

Realise that this are decade old videos.

[@arnab639]

gr8

[@aminanoorudeen3970]

Thank you sir

[@kasibangaramdevi9927]

nice lecture sir...where can i get the notes of this lecture sir ? pls help me

[@anuragp6178]

Thank you sir..

[@asifsha1315]

Thank you sir

[@sabidasathyan7101]

Thank you sir

[@parvathyvr6105]

Thank you sir

[@ananduhari2299]

Thank you sir

[@malavikapv5361]

Thank you sir

[@gouthamchandran767]

Thank you sir

[@febinmathew3828]

Thank you sir

[@fahmidhafahamidha2322]

Thank you sir

[@anaghaps1002]

Thank you sir

[@sanahameed7061]

Thank you sir

[@devadasbabudd2167]

Thankyou sir

[@zainabarahim961]

Thank you sir

[@krishna3172]

Thank you sir

[@adhilmusthafa4195]

Thank you sir

[@althaffaizal6829]

Thank you sir

[@eldhokuriakose2166]

Thank you sir

[@misnapk5349]

Good class..

[@alenpaul3841]

Thanks sir

[@anjimarajesh1918]

Thanks sir

[@anjiman3572]

Thanks

[@huegon9517]

Thanks

[@hsahrawat]

video content very much informative. But the quality of video very poor. Please upload again as the graphs and other figures very blurry.

[@idrisrasuli1528]

Thank you so much, Dr. B.. Bhattacharjee for your valuable lecture.

[@puspenduroychowdhury4534]

After chemical reaction cement particles :
1) get bigger
2) get smaller
3) no change

[@jamalparakandi172]

good sir, can you share with me the copy of presentations?

[@deepikadinesh_]

Such an effective one sir....😊

[@muhammadijas.n5903]

Thank you sir 😊

[@jinantk1567]

Lots of thanks for the class,sir💯👍

[@sayalipatil5025]

video quality 😑

[@sucharusharma]

very hlpfulll.. :)