cement

cement aadhunik bhavan nirmaan me prayukt hone waali ek praathamik saamagri hai. cement mukhyat: kailshiym ke siliket aur eluminet yaugikon ka mishran hota hai, jo kailshiym oksaaid, silika, elyoomeeniym oksaaid aur lauh aaksaaid se nirmit hote hain.

cement banaane ki liye choona patthar aur mruttika (kle) ke mishran ko ek bhatthi mein uchch taapamaan par jalaaya jaata hai aur tatpashchaat is prakriya ke fal:svaroop bane khangar (klinkar) ko jipsam ke saath milaakar maheen peesa jaata hai aur is prakaar jo antim utpaad praapt hota hai use saadhaaran portalaind cement (sa.po.si.) kaha jaata hai.

Bhaarat mein, sa.po.si. ka nirmaan moolat: teen gred (shreni) me hota hai. gred-33, gred-43 aur gred-53, yeh sankhyaayein 28 dinon ke baad praapt iski sampeedit saamarthya (kaumpresiv streingth) ko ingit karti hain, jab ek nirdhaarit prakriyaanusaar iska pareekshan kiya gaya ho.

sa.po.si. ke alaava, kai anya prakaar ke cement ka bhi utpaadan hota hai aur unamein se adhikaansh vishesh prayojanon ke liye hote hain, udaaharan ke liye salfet pratirodhi cement, safed cement, tel-koop cement, aadi. in sabke saath kuchh saamaanya prayojan cement bhi hote hain aur iname sabse aam prakaar hai pojolaana portalaind cement (po.po.si.).

anukram

portalaind pojolaana cement

pojolaana aavashyak roop se ek silisiys saamagri hai jo jisme koi seemeintakaarak (cementitious/ jodne vaale) gun naheen hote lekin yeh jal ki upasthiti mein yeh saamaanya taapamaan par kailshiym haaidroksaaid ke saath pratikriya kar un yaugikon ka nirmaan karta hai jinme seemeintakaarak gun hote hain.

pojolaana, portalaind pojolaana cement ke vinirmaan mein istemaal kiya jaata hai, yeh shel (sleti patthar), tafas, jvaalaamukhi ki raakh, pyoomisaaits aur dvipramaanuvik mruda ki tarah praakrutik ho sakta hai. mitti ke kailsineshan se sansaadhit padaarth aur udn raakh ka upayog bhi pojolaana cement ke vinirmaan mein kiya jaata hai.

portalaind pojolaana cement ka vinirmaan ya to portalaind cement khangar, pojolaana aur jipsam, ko ek saath maheen pees kar hota hai ya fir samaan roop se aur achhi tarah portalaind cement aur pojolaana choorn (paavadar) ko sammishrit kar banaaya jaata hai. Satish ojha report

sandarbh

inhein bhi dekhein

baahari kadiyaaain