Dothi la ufa wowuma lagwiritsidwa ntchito kwambiri pakadali pano. Pali cholozera champhamvu cha bond mumatope a ufa wowuma. Kuchokera pakuwona zochitika zakuthupi, pamene chinthu chikufuna kugwirizanitsa ndi chinthu china, chimafunika kukhuthala kwake. N'chimodzimodzinso ndi matope, simenti + Mchenga wosakanikirana ndi madzi kuti akwaniritse mphamvu zomangira zoyamba, ndiyeno kuchiritsidwa ndi zowonjezera ndi simenti kuti potsirizira pake akwaniritse mphamvu ya mgwirizano yomwe imafunidwa ndi matope. Ndiye ndi zinthu ziti zomwe zimakhudza mphamvu ya mgwirizano?
Zotsatira za zowonjezera
Ma cellulose ether ndi ufa wa rabala ndizowonjezera zofunika kwambiri mumatope omangira a ufa wowuma. Ufa wa rabara mumtondo nthawi zambiri umakhala wosungunuka m'madzi, womwe umatha kugawidwa kukhala wosasunthika komanso wosinthika. Gwiritsani ntchito ufa wa rabara wofananira malinga ndi zomwe mukufuna; ntchito zazikulu Zimapereka zomatira zabwino kwambiri komanso zimathandiza kukonza kukana kwamadzi, kukana kutentha, pulasitiki komanso kusinthasintha kwa matope.
Udindo wa cellulose ether umagwiritsidwa ntchito makamaka posungira madzi mumatope kuti apititse patsogolo kukhazikika kwa mankhwalawa; mwachitsanzo, pomanga nyumba kale, amisiri ambiri aluso ankasakaniza simenti ndi mchenga pansi. Akathira madzi ndi kusonkhezera, kaŵirikaŵiri amawona madzi akutuluka. Popaka khoma ndi matope amtundu uwu, sikuyenera kukhala wandiweyani, komanso pang'ono pang'onopang'ono. Chinthu china ndi kupukuta pamene akusisita. Kuwongolera m'mikhalidwe imeneyi kunali kofulumira. Madzi amatsekeredwa mumtondo ndipo amakana kukhetsa. Popaka khoma, imatha kumangidwa mosavuta ngati putty, ndipo makulidwe ake amathanso kuwongoleredwa ndikuchepetsedwa; Ubwino waukulu ndikuti kuthamanga kwa matope kumatha kuyendetsedwa bwino, ndipo simenti imatha kukhala ndi madzi okwanira, zomwe zimapindulitsa pakuwongolera mphamvu zonse zamatope.
kuchepa
The shrinkage ya matope tinganene kuti n'zogwirizana ndi kugwirizana mphamvu, amene angakhudze kwenikweni malo omangirira, potero kupanga ming'alu dzenje ndi kutaya mwachindunji kugwirizana mphamvu; Choncho, tiyenera kukhala ndi zofunika okhwima pa gradation wa simenti ndi mchenga mu matope , amene osati amalamulira shrinkage, komanso kumathandiza kuti chomangira mphamvu ya matope. Kuonjezera apo, kuchepetsa kuchepa kungathenso kusakanikirana ndi zipangizo zogwira ntchito. Zida zogwira ntchito nthawi zambiri zimatanthawuza kuchuluka kwa silika woyatsidwa ndi aluminiyamu. Saumitsa kapena kuuma pang'onopang'ono pamene madzi awonjezeredwa. Tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono, timene titha kulowa m'malo mwa matope odzaza simenti, motero kumachepetsa kuchepa kwa matopewo.
Mphamvu yamadzi ndi hydrophobic
Mwanjira ina, kutsekereza madzi ndi hydrophobicity ndizosemphana ndi mphamvu ya mgwirizano. Mwachitsanzo, m'mbuyomu, anthu ambiri ankayembekeza kukhala ndi katundu wopanda madzi mu zomatira matayala, zomwe zingachepetse ntchito yomanga makoma a khitchini ndi bafa, koma kuthekera sikuli kwakukulu; choyamba, ngati matope athu akufuna kukwaniritsa madzi kapena hydrophobic zotsatira, tiyenera kuwonjezera hydrophobic wothandizira. Pambuyo posakaniza hydrophobic ndi matope, filimu yosasunthika idzapanga pang'onopang'ono pamwamba. Mwanjira iyi, matailosi akamayikidwa, madzi sangathe kulowa bwino mu matailosi, mphamvu yonyowa imachepetsedwa, ndipo mphamvu yomangira yachilengedwe siyingawonjezeke pakukonza matope.
Mphamvu yomangirira imatanthawuza mphamvu yolumikizana kwambiri ya matope yomwe imagwira pansi;
Mphamvu yokhazikika imatanthawuza kuthekera kwa matope pamwamba kukana mphamvu yamphamvu yokhazikika pamtunda;
Kumeta ubweya wa mphamvu kumatanthauza mphamvu yotsimikiziridwa pogwiritsa ntchito mphamvu yofanana;
Mphamvu yopondereza imatanthawuza kuchuluka kwakukulu komwe matope amalephera, kuyeza pogwiritsa ntchito kukakamiza.
Nthawi yotumiza: Mar-06-2023