2. Kumva kwa polycarboxylic acid yochepetsera madzi kumatope
Matope omwe ali muzinthu zopangira konkriti, mchenga ndi miyala, adzakhala ndi mphamvu yosasinthika pakugwira ntchito kwa konkire ndikuchepetsa magwiridwe antchito a polycarboxylic acid water reducer. Chifukwa chachikulu ndichakuti chotsitsa chamadzi cha polycarboxylic acid chitatha kudyedwa ndi dongo mochulukirapo, gawo lomwe limagwiritsidwa ntchito pomwaza tinthu tating'ono ta simenti limachepetsedwa, ndipo dispersibility imakhala yosauka. M'matope a mchenga akachuluka, kuchuluka kwa madzi ochepetsa madzi a polycarboxylic acid kudzachepetsedwa kwambiri, kutsika kwa konkire kumawonjezeka, kutsika kwamadzi kumachepa, konkire imatha kusweka, mphamvu imachepa, ndipo kulimba kudzawonongeka.

Pali njira zingapo zothanirana ndi vuto lomwe lilipo mumatope:
(1) Wonjezerani mlingo kapena kuonjezera Onjezani kugwa kwapang'onopang'ono-kupewa wothandizira kugwa mu gawo linalake, koma sungani kuchuluka kwake kuti muteteze chikasu, kutuluka magazi, kulekanitsa, kugwira pansi ndi nthawi yayitali ya konkire;
(2) Sinthani chiŵerengero cha mchenga kapena kuonjezera kuchuluka kwa mpweya wolowetsa mpweya. Pansi pa mfundo kuonetsetsa workability wabwino ndi mphamvu, kuchepetsa chiŵerengero mchenga kapena kuonjezera kuchuluka kwa mpweya entraining wothandizila kuonjezera ufulu madzi okhutira ndi muiike buku la dongosolo konkire, kuti kusintha ntchito konkire;
(3) Onjezani kapena sinthani zigawozo moyenera kuti muthetse vutoli. Kuyesera kwawonetsa kuti kuwonjezera kuchuluka koyenera kwa sodium pyrosulfite, sodium thiosulfate, sodium hexametaphosphate ndi sodium sulfate ku chochepetsera madzi kumatha kuchepetsa kukhudza kwamatope pa konkriti pamlingo wina. Inde, njira zomwe zili pamwambazi sizingathetse mavuto onse amatope. Kuonjezera apo, zotsatira za matope pa kukhazikika kwa konkire zimafunikanso kuphunzira, kotero njira yofunikira ndiyo kuchepetsa matope a zipangizo.