Kodi zowonjezera za simenti ndi chiyani ndipo ntchito yake ndi yotani?

Simenti imathandizira ndikuteteza ma casings abwino ndikuthandizira kukwaniritsa kudzipatula.Zofunikira ku zitsime zotetezeka, zachilengedwe, komanso zopindulitsa, kudzipatula kumapangidwa ndikusamalidwa pachitsime pogwiritsa ntchito simenti.Zonal kudzipatula kumalepheretsa madzi monga madzi kapena gasi m'dera limodzi kuti asasakanizike ndi mafuta kudera lina.Izi zimatheka mwa kupanga chotchinga cha hydraulic pakati pa casing, simenti ndi mapangidwe.Zowonjezera za simenti ndizinthu zomwe zimawonjezeredwa ku simenti kuti zithandizire kukhathamiritsa kwa simenti ndi njira yopera simenti.Zowonjezera za simenti zimagawidwa m'magulu osiyanasiyana azinthu monga zothandizira kugaya, zowonjezera mphamvu ndi zowonjezera ntchito.Pali mitundu iwiri ya ntchito pomanga simenti, ndiyo, pulayimale ndi sekondale.Simenti yoyambirira imakonza choyikapo chachitsulo ku mapangidwe ozungulira.Simenti yachiwiri imagwiritsidwa ntchito podzaza mapangidwe, kusindikiza, kapena kutseka madzi.Magwiridwe amatha kusiyanasiyana powonjezera zowonjezera potengera mbali zosiyanasiyana.Kutengera ndikugwiritsa ntchito simenti, mitundu yosiyanasiyana ya zowonjezera zitha kuphatikizidwa.Izi zikuphatikizapo ma accelerator, retarders, dispersants, extenders, weighting agents, gels, foamers, ndi zowonjezera madzi otaya madzi.Foring Chemcials imapereka zowonjezera zamtundu wapamwamba kwambiri wazowonjezera pamafuta akumunda wamafuta komanso zimaperekanso mapangidwe opangidwa mwaluso kuti athandizire ndikuwongolera njira yopangira simenti.Zida zotayira simenti zimathandizira kuti slurry rheology ipangike kuti kupopera kwakutali kumakhala bwino kwambiri ndipo nthawi yomweyo ma slurry a simenti ocheperako amatheka.Zowonjezera zotayika zamadzimadzi, zomwe zimakhala zokhazikika polimbana ndi kutentha kwakukulu komanso njira zopangira mchere wambiri, zimatsimikizira ntchito yodalirika ya simenti pansi pa zovuta.Ma retarders amatha kuphatikizidwa molumikizana ndi ma dispersants athu ogwira ntchito bwino omwe amalola kuti pakhale nthawi yovuta kwambiri yomanga simenti pansi pa kutentha kwambiri.Zowonjezera zotsutsana ndi gasi zimalepheretsa gasi kuyenda kudzera pa simenti yowumitsa ndikuwonetsetsa ntchito yodalirika yomanga simenti, pomwe ma defoam athu ali ndi mphamvu zowongolera thovu.