SEMENT

SEMENT (nem. Zement, az lot. sae-mentum — shagal, sangreza), nomi mushtaraki moddahoi khokamonandi chasponero guyand, ki hangomi dar ob omekhtan khamirai plastiki hosil mekuvavd va bad shakh (salgmonand) metlamnd. Sement yake az masolehhoi muhimtarini binokori buda, baroi tayor kardani beton va mahlulhoi binokori, mustahkam kardani juzhoi judogonai inshoot, gidroizolyasiya va g. istnfoda meshavad.

Sement az zamonhoi khele qadim malum ast. Misriyon va yunoniyoni qadim dar sokhtmoni inshooti azim avvalin moddahoi sunii chaspon — gaj va ohakro ba kor burdaand. Dar Bukhoroi Qadim hangomi bunyodi poydevor, devorhoi dakhma, sagonaho, havzu hammomho Sementi gajdor — «qir»-ro ba kor burdaand. «Qir»-ro asosan az khokistari rastani, gaj, shirai angur va safedai tukhm hosil mekardand.

Badi galabai Revolyusiyai Oktyabr baroi inkishofi sanoati sement va ilmi Sement sharoiti musoid faroham omad. Tadqiqot va asarhoi olimoni soveti (A. A. Baykov, V. A. Kind, V. N. Yung, P. P. Budnikov, P. A. Rebinder va dig.) ba fizikayu khimiyai Sement asos guzoshtand.

SSSR az jdihati istehsoli Sement dar jahon joi yakumro megirad. S. 1980 on 125 mln. t (az jumla Tojikiston 1050 haz. t) Sement istehsol kard.