Tsiku Lotumiza:19 Feb,2024
Zofunika za njira yomanga:
(1) Popanga gawo losakanikirana la konkriti, kugwiritsa ntchito kophatikizana kogwiritsa ntchito kwambiri madzi ochepetsera madzi ndi mpweya wowongolera mpweya kumathetsa kukhazikika kwa zomanga za konkire m'malo ozizira kwambiri;
(2) Mwa kuphatikizira zigawo zowonongeka zowonongeka muzitsulo zochepetsera madzi, zomwe zimakhudzidwa ndi kutentha kwakukulu m'chilimwe pa ntchito yogwira ntchito ya konkire imathetsedwa;
(3) Kupyolera mu kusanthula kuyesera, chikoka cha matope okhutira konkire pa workability ndi compressive mphamvu konkire;
(4) Mwa kupanga mchenga wouma ndi mchenga mu gawo linalake, chodabwitsa chakuti mtundu umodzi wa mchenga wa konkire sungathe kukumana ndi ntchito ya konkire imathetsedwa;
(5) Zomwe zimakhudza ntchito ya konkire zimafotokozedwa, ndipo zotsatira za zinthu zoipa pa ntchito ya konkire zimapewedwa panthawi yomanga konkire.
Mfundo yogwirira ntchito yochepetsera madzi yogwira ntchito kwambiri:
(1) Kubalalitsidwa: The wothandizila madzi kuchepetsa ndi directionally adsorbed pamwamba pa simenti particles, kuwapangitsa kunyamula mlandu womwewo kupanga electrostatic repulsion, amene amalimbikitsa simenti particles kumwazikana wina ndi mzake, kuwononga flocculation dongosolo anapanga ndi simenti slurry, ndi kutulutsa mbali ya madzi wokutidwa. Mogwira kuonjezera fluidity wa konkire osakaniza.
(2) Lubricant effect: Wothandizira kuchepetsa madzi ali ndi gulu lamphamvu kwambiri la hydrophilic, lomwe limapanga filimu yamadzi pamwamba pa tinthu tating'onoting'ono ta simenti, kuchepetsa kukana kwachitsulo pakati pa particles simenti, potero kumawonjezera madzi a konkire.
(3) Kulepheretsa kwa Steric: Wothandizira kuchepetsa madzi ali ndi maunyolo a mbali ya hydrophilic polyether, omwe amapanga hydrophilic-dimensional adsorption wosanjikiza pamwamba pa tinthu tating'ono ta simenti, zomwe zimapangitsa kuti zikhale zovuta pakati pa simenti particles, potero kuonetsetsa kuti konkire ili ndi katundu wabwino. kugwa.
(4) Kutulutsidwa kwapang'onopang'ono kwa nthambi za copolymerized: Panthawi yopangira ndikukonzekera njira zatsopano zochepetsera madzi, maunyolo a nthambi okhala ndi ntchito zenizeni amawonjezeredwa. Unyolo wa nthambi uwu sikuti umangokhala ndi cholepheretsa chotchinga, komanso ungagwiritsidwe ntchito panthawi ya simenti yayikulu. Ma polycarboxylic acid okhala ndi zotsatira zobalalitsa amatulutsidwa m'malo amchere, omwe amathandizira kuti tinthu tating'onoting'ono ta simenti tiyende bwino ndikuwongolera kutsika kwa konkriti pakapita nthawi.
Nthawi yotumiza: Feb-19-2024
