Tsiku Lotumiza: 13 Dec, 2021
The oyambirira mphamvu wothandizira akhoza kwambiri kufupikitsa nthawi yomaliza yoika konkire pansi pa malo kuonetsetsa ubwino wa konkire, kotero kuti akhoza demoulded posachedwapa, potero kufulumizitsa chiwongolero cha formwork, kupulumutsa kuchuluka kwa formwork, kupulumutsa mphamvu ndi kupulumutsa simenti, kuchepetsa mtengo kupanga, ndi kukonza konkire Kutulutsa kwa mankhwala.
Zimatenga nthawi yayitali kuti simenti ya konkire ikhazikike ndikuuma kuti ifike kumphamvu. Komabe, muzinthu zina zazikulu zopangira konkriti zopangira konkriti kapena zomanga nyengo yozizira, nthawi zambiri zimakhala zofunikira kupeza mphamvu zapamwamba pakanthawi kochepa. Choncho, wothandizira mphamvu oyambirira nthawi zambiri amawonjezedwa mu ndondomeko yosakaniza konkire kuti akwaniritse cholinga choumitsa nthawi yochepa. Wothandizira mphamvu zoyambira amatha kuumitsa simenti kwakanthawi kochepa pansi pa malo osachepera -5 ° C, omwe amatha kupititsa patsogolo mphamvu ya phala la simenti, matope ndi konkire. Kuphatikizira koyambirira kwamphamvu mu kusakaniza konkire sikungotsimikizira kuti madzi amachepetsa, kulimbikitsa ndi kugwirizanitsa zotsatira za konkire, komanso amapereka kusewera kwathunthu ku ubwino wa woyambitsa-mphamvu. Kuphatikizika kwa wothandizila woyambilira mu konkire kumatha kuonetsetsa kuti konkire imakhala yabwino komanso kupititsa patsogolo ntchitoyo, kufewetsa kwambiri ndikuchepetsa zofunikira pakuchiritsa.
Ntchito zazikulu ziwiri za wothandizira mphamvu zoyambirira:
Chimodzi ndicho kupanga konkire kufika ku mphamvu yapamwamba mu nthawi yochepa kuti ikwaniritse zofunikira za kupirira mphamvu zakunja. Chachiwiri, kutentha kukakhala kochepa, kuuma kwa matope kumakhala pang'onopang'ono, makamaka m'nthaka ina yachisanu, mphamvu yotsika, matope amawononga kwambiri. Ngati matope awonongeka chifukwa cha kuzizira, amachititsa kuwonongeka kosatha kwa matope, kotero pa kutentha kochepa, mphamvu yoyambirira iyenera kuwonjezeredwa.
Kusiyana pakati pa wothandizira mphamvu zoyamba ndi zochepetsera mphamvu zoyambira:
Wothandizira mphamvu zoyamba ndi zochepetsetsa zochepetsera madzi ndizosiyana kwenikweni ndi kuchuluka kwa mawu, koma ngati mumvetsetsa zotsatira za zinthu ziwirizi, pali kusiyana kwakukulu. Wothandizira mphamvu zoyamba akhoza kuumitsa simenti mu nthawi yochepa pamene aikidwa mu konkire, makamaka mu malo otsika kutentha, zotsatira za mankhwalawa ndi zoonekeratu. Wothandizira kuchepetsa madzi oyambirira amathandizira kuchepetsa chinyezi mu konkire.
Nthawi yotumiza: Dec-13-2021
