Tsiku Lotumiza: 15 Jul, 2024
1. Konkire yokhala ndi madzi ambiri amatha kukhala delamination ndi tsankho.
Nthawi zambiri, konkire yamadzimadzi yokonzedwa ndi polycarboxylic acid-based reduction agents of water-based-polycarboxylic acid-based reduction agents of the water-based-polycarboxylic acid-based reduction agents of the water-based-water-based-concrete-concrete-concrete-concrete-concrete-concrete-concrete, ngakhale kuchuluka kwa madzi ochepetsera ndi kumwa madzi kumayendetsedwa bwino, koma n'zosavuta kuti zichitike. Zochitika za stratification ndi tsankho zimawonekera pakumira kwa matope ndi kuyandama kwa matope kapena matope oyera. Pamene kusakaniza konkriti kotereku kumagwiritsidwa ntchito kutsanulira, delamination ndi tsankho zikuwonekera ngakhale popanda kugwedezeka.
Chifukwa makamaka chifukwa chakuthwa kuchepa mamasukidwe akayendedwe slurry pamene fluidity wa konkire wothira izi polycarboxylic asidi ofotokoza kuchepetsa madzi wothandizila ndi mkulu. Kuphatikizika koyenera kwa zigawo zokulirakulira kumatha kuthetsa vutoli mpaka pamlingo wina, ndipo kuphatikizika kwa zigawo zokulirapo nthawi zambiri kumabweretsa zomwe zimachepetsa kwambiri kuchepetsa kuchepa kwa madzi.
2. Pogwiritsidwa ntchito pamodzi ndi mitundu ina ya ochepetsera madzi, palibe zotsatira zowonjezera.
M'mbuyomu, pokonzekera konkire, mtundu wa kupopera wothandizira ukhoza kusinthidwa mwa kufuna kwake, ndipo katundu wa konkire wosakaniza sakanakhala wosiyana kwambiri ndi zotsatira za labotale, komanso sipadzakhala kusintha kwadzidzidzi kwa zinthu za konkire osakaniza. .
Pamene mankhwala ochepetsa madzi a polycarboxylic acid amagwiritsidwa ntchito limodzi ndi mitundu ina ya mankhwala ochepetsera madzi, zimakhala zovuta kupeza zotsatira zowonjezera, komanso kusungunuka kwapakati pa polycarboxylic acid-based water-reduction agents ndi mitundu ina ya madzi- njira zochepetsera ndizosauka.
3. Palibe kusinthidwa zotsatira pambuyo kuwonjezera ambiri ntchito kusintha zigawo zikuluzikulu.
Pakali pano, pali ndalama zochepa zofufuza zasayansi za polycarboxylic acid-based reduction agents. Nthawi zambiri, cholinga cha kafukufuku wasayansi ndikungopititsa patsogolo pulasitiki ndi kuchepetsa madzi. Ndizovuta kupanga mamolekyu molingana ndi zosowa zamainjiniya osiyanasiyana. Mankhwala ochepetsa madzi opangidwa ndi polycarboxylic acid okhala ndi zotsatira zochedwetsa komanso zofulumizitsa mosiyanasiyana, osalowetsa mpweya kapena zinthu zina zopatsira mpweya, komanso ma viscosity osiyanasiyana amapangidwa. Chifukwa cha kusiyanasiyana ndi kusakhazikika kwa simenti, zosakaniza, ndi zophatikizika m'mapulojekiti, ndikofunikira kwambiri kuti opanga zosakaniza ndi ogulitsa aziphatikiza ndikusintha zinthu zochepetsa kuchepetsa madzi za polycarboxylate malinga ndi zosowa za polojekiti.
Pakali pano, luso miyeso pawiri kusinthidwa kwa wothandizila madzi kuchepetsa kwenikweni zochokera miyeso kusinthidwa kwa anthu ochepetsera madzi chikhalidwe monga lignosulfonate mndandanda ndi naphthalene mndandanda mkulu-mwachangu kuchepetsa madzi. Mayeso atsimikizira kuti njira zosinthira zam'mbuyomu sizoyenera zochepetsera madzi za polycarboxylic acid. Mwachitsanzo, pakati pa zigawo zotsalira zomwe zimagwiritsidwa ntchito pokonza mankhwala ochepetsera madzi a naphthalene, sodium citrate si yoyenera kwa polycarboxylic acid-based based reduction agents. Sikuti zimakhala ndi zotsatira zochepetsera, zimatha kufulumizitsa coagulation, ndi sodium citrate solution The miscibility ndi polycarboxylic acid-based based reduction agents amakhalanso osauka kwambiri.
Kuphatikiza apo, mitundu yambiri ya mankhwala ochotsera foaming, air-entraining agents ndi thickeners sizoyenera kugwiritsa ntchito pochepetsa madzi a polycarboxylic acid. Kupyolera mu mayesero ndi kusanthula pamwamba, sikovuta kuona kuti chifukwa cha makamaka kapangidwe maselo a polycarboxylic acid ozikidwa kuchepetsa wothandizila madzi, kutengera kuya kwa kafukufuku wa sayansi ndi kudzikundikira luso ntchito uinjiniya pa nthawi imeneyi, zotsatira zake. a polycarboxylic acid ochepetsa madzi pa polycarboxylic acid-based superplasticizers kudzera m'zigawo zina zamankhwala Palibe njira zambiri zosinthira zochepetsera madzi, komanso chifukwa cha malingaliro ndi miyezo yomwe idakhazikitsidwa m'mbuyomu pakusintha kwamitundu ina yochepetsera madzi. othandizira, kufufuza mozama ndi kafukufuku angafunike kwa othandizira ochepetsa madzi a polycarboxylate. Konzani ndi kuwonjezera.
4. Kukhazikika kwa magwiridwe antchito ndikosavuta kwambiri.
Osati makampani ambiri a konkriti ochepetsa madzi omwe angatengedwe ngati makampani abwino a mankhwala. Makampani ambiri amangokhala mu gawo loyamba lopanga zosakaniza ndi makina oyika, ndipo mtundu wazinthu umachepetsedwa ndi mtundu wa masterbatch. Pankhani yowongolera kupanga, kusakhazikika kwa gwero ndi mtundu wa zida zopangira nthawi zonse kwakhala chinthu chachikulu chomwe chimasokoneza magwiridwe antchito a polycarboxylic acid-based superplasticizers.
Nthawi yotumiza: Jul-15-2024
