Zokambirana pa Zotsatira za Kuwonjezedwa kwa Hydroxypropyl Methyl Cellulose pa Properties of Mortar

Hydroxypropyl methylcellulose HPMC imatha kusintha kwambiri kusungidwa kwamadzi mumatope. Mlingo wochepa wa hydroxypropyl methylcellulose HPMC ukhoza kusintha kwambiri kuchuluka kwa madzi osungiramo matope. Pamene mlingo ndi 0.02%, mlingo wosungira madzi ukuwonjezeka kuchokera 83 % ananyamuka mpaka 88%; pamene mlingo unali 0.2%, madzi osungira madzi anafika 97%. Pa nthawi yomweyo, otsika zili HPMC komanso kwambiri amachepetsa mlingo wa delamination ndi magazi mlingo wa matope, zomwe zikusonyeza kuti HPMC akhoza kusintha kasungidwe madzi a matope, komanso kwambiri kusintha kugwirizana kwa matope, amene. ndikofunikira kuti mufanane wamtundu womanga matope. zabwino kwambiri.

Komabe, hydroxypropyl methylcellulose HPMC imakhala ndi vuto linalake pa mphamvu yosinthasintha komanso mphamvu yopondereza yamatope. Ndi kuwonjezeka kwa hydroxypropyl methylcellulose HPMC zomwe zili, mphamvu yosinthasintha ndi mphamvu yopondereza yamatope inachepa pang'onopang'ono. Panthawi imodzimodziyo, hydroxypropyl methylcellulose HPMC ikhoza kuonjezera mphamvu yamatope. Pamene zomwe zili mu hydroxypropyl methylcellulose HPMC zili mkati mwa 0.1%, mphamvu yowonongeka ya matope imawonjezeka mosalekeza ndi kuwonjezeka kwa HPMC, pamene zomwe zili pamwambazi zidutsa 0.1%, mphamvu yachitsulo sichidzawonjezeka kwambiri. Hydroxypropyl methylcellulose HPMC imathanso kukulitsa mphamvu yomangira ubweya wamatope. Kuwonjezera 0.2% HPMC kungapangitse mphamvu yomanga matope kuchokera ku 0.72MPa ichuluke mpaka 1.16MPa.

Kafukufuku wawonetsa kuti hydroxypropyl methylcellulose HPMC imatha kutalikitsa nthawi yozizira yamatope ndikuchepetsa kwambiri kutsetsereka kwamatope, komwe kumapindulitsa kwambiri pomanga matailosi. HPMC ikapanda kuwonjezeredwa, mphamvu yomangira matope yomwe idakhazikika kwa mphindi 20 imatsika kuchokera pa 0.72MPa kupita ku 0.54MPa. Pambuyo powonjezera 0.05% ndi 0.1% HPMC, mphamvu yomangira matope yomwe idakhazikika kwa mphindi 20 ndi 0.8MPa ndi 0.84MPa, motsatana. HPMC ikapanda kuwonjezeredwa, kutsetsereka kwa matope ndi 5.5mm. Ndi kuchuluka kwa zinthu za HPMC, kutsetsereka kumachepa mosalekeza. Zomwe zili ndi 0.2%, kutsika kwamatope kumatsika mpaka 2.1mm, ndipo kutsetsereka kumachepetsedwa kwambiri. Ndipo zomangamanga zina zoonda zimapereka chithandizo chaukadaulo.

Komanso, hydroxypropyl methylcellulose HPMC akhoza bwino ziletsa mapangidwe ming'alu pulasitiki mu matope ndi kuchepetsa kwambiri ming'alu pulasitiki. Pamene zomwe zili mu HPMC ndizochepa, chiwerengero cha crack chimachepa kwambiri ndi kuwonjezeka kwa zomwe zili mu HPMC. Pamene zomwe zili mu HPMC ndi 0.1% ndi 0.2%, chiwerengero cha ufa wa matope ndi 63% ndi 50%, motero. Pambuyo zomwe zili mu HPMC zimaposa 0,2%, ming'alu ya pulasitiki yamatope sakhalanso yafupika.