Ukwakhiwa kodaka lokuplasta olusebenzisa oomatshini kuye kwenza inkqubela phambili kwiminyaka yakutshanje. Udaka lokuplasta lukwaphuhliswe ukusuka kwindawo yendabuko yokuzixuba ukuya kwidaka eqhelekileyo yomxube owomileyo kunye nodaka oluxutywe ngamanzi. Ukuphakama nokusebenza kwayo kunye nokuzinza zezona zinto ziphambili zokukhuthaza uphuhliso lodaka olusebenzisa oomatshini, kwaye i-cellulose ether isetyenziswa njengodaka lokuplasta. I-core additive inendima engenakutshintshwa. Kolu vavanyo, ngokulungelelanisa i-viscosity kunye nokugcinwa kwamanzi kwe-cellulose ether, nangokuguqulwa kokwenziwa, iziphumo zezibonakaliso zovavanyo ezifana nesantya sokugcina amanzi, ukulahleka kokuhambelana kweeyure ezi-2, ixesha elivulekileyo, ukumelana nokuhla, kunye nokuhamba kwamanzi kodaka lokuplasta kulwakhiwo olusebenzisa oomatshini ziye zafundwa. Ekugqibeleni, kwafunyaniswa ukuba i-cellulose ether ineempawu zesantya esiphezulu sokugcina amanzi kunye nepropati elungileyo yokusonga, kwaye ifanelekile ngokukodwa kulwakhiwo olusebenzisa oomatshini lodaka lokuplasta, kwaye zonke izibonakaliso zodaka lokuplasta ziyahlangabezana nemigangatho yesizwe.
Izinga lokugcina amanzi kwi-plastering mortar
Izinga lokugcina amanzi kwi-plastering mortar liyanda xa i-viscosity ye-cellulose ether isuka kwi-50,000 ukuya kwi-100,000, kwaye iyancipha xa isuka kwi-100,000 ukuya kwi-200,000, ngelixa izinga lokugcina amanzi kwi-cellulose ether yokutshiza ngomatshini lifikelele ngaphezulu kwe-93%. Okukhona izinga lokugcina amanzi kwi-mortar liphezulu, kokukhona amathuba okuba i-mortar iphume igazi. Ngexesha lovavanyo lokutshiza ngomatshini wokutshiza, kwafunyaniswa ukuba xa izinga lokugcina amanzi kwi-cellulose ether liphantsi kwe-92%, i-mortar inokuba ne-cold emva kokuba ibekwe ixesha elithile, kwaye, ekuqaleni kokutshiza, kulula kakhulu ukuyivala ipayipi. Ke ngoko, xa silungiselela i-plastering mortar efanelekileyo yokwakha ngoomatshini, kufuneka sikhethe i-cellulose ether enezinga eliphezulu lokugcina amanzi.
Ukusika i-mortar ngeplasta iiyure ezi-2 ukulahleka kokuhambelana
Ngokweemfuno ze-GB/T25181-2010 ethi “Ready Mixed Mortar”, imfuneko yokulahleka kokuhambelana kweeyure ezimbini kwi-plastering mortar eqhelekileyo ingaphantsi kwama-30%. I-viscosity ye-50,000, 100,000, 150,000, kunye ne-200,000 yasetyenziswa kwiimvavanyo zokulahleka kokuhambelana kweeyure ezi-2. Kuyabonakala ukuba njengoko i-viscosity ye-cellulose ether isanda, ixabiso lokulahleka kokuhambelana kweeyure ezi-2 kwi-mortar liya kuncipha kancinci kancinci, nto leyo ebonisa ukuba i-viscosity ye-cellulose ether. Okukhona ixabiso liphezulu, kokukhona uzinzo lokuhambelana kwe-mortar lungcono kwaye kokukhona ukusebenza kwe-anti-delamination kwe-mortar kubhetele. Nangona kunjalo, ngexesha lokutshiza, kwafunyaniswa ukuba ngexesha lonyango lokulinganisa kamva, kuba i-viscosity ye-cellulose ether iphezulu kakhulu, ukudibana phakathi kwe-mortar kunye ne-trowel kuya kuba kukhulu, nto leyo engafanelekanga ekwakheni. Ke ngoko, kwimeko yokuqinisekisa ukuba i-mortar ayihlali kwaye ayihlukanisi, kokukhona ixabiso le-viscosity ye-cellulose ether liphantsi, kokukhona lingcono.
Amaxesha okuvula okwakha i-plaster mortar
Emva kokuba i-plastering mortar itshiziwe eludongeni, ngenxa yokufunxwa kwamanzi kwi-substrate yodonga kunye nokuphuma komswakama kumphezulu we-mortar, i-mortar iya kwenza amandla athile ngexesha elifutshane, nto leyo eya kuchaphazela ulwakhiwo lwe-leveling olulandelayo. Ixesha lokuxinana lihlalutywe. Ixabiso le-viscosity ye-cellulose ether liphakathi kwe-100,000 ukuya kwi-200,000, ixesha lokuseta alitshintshi kakhulu, kwaye likwanolwalamano oluthile nezinga lokugcinwa kwamanzi, oko kukuthi, xa izinga lokugcinwa kwamanzi liphezulu, kokukhona ixesha lokuseta le-mortar liba lide.
Ukutyibilika kodaka lokuplasta
Ukulahleka kwezixhobo zokutshiza kunento yokwenza kakhulu nokuthamba kwe-plastering mortar. Phantsi komlinganiselo ofanayo wamanzi nezinto, kokukhona i-viscosity ye-cellulose ether iphezulu, kokukhona ixabiso lokuthamba kwe-mortar liphantsi. , oko kuthetha ukuba xa i-viscosity ye-cellulose ether iphezulu, kokukhona i-mortar inamandla okuxhathisa kwaye kokukhona igugile kakhulu kwizixhobo. Ke ngoko, kulwakhiwo olusebenzisa oomatshini lwe-plastering mortar, i-viscosity ephantsi ye-cellulose ether ingcono.
Ukumelana nokugqwala kodaka lokuplasta
Emva kokuba i-plastering mortar itshiziwe eludongeni, ukuba ukumelana nokungawi kwe-mortar akulunganga, i-mortar iya kugoba okanye ide ityibilike, nto leyo echaphazela kakhulu ukutyibilika kwe-mortar, nto leyo eya kubangela ingxaki enkulu kulwakhiwo lwamva. Ke ngoko, i-mortar elungileyo kufuneka ibe ne-thixotropy egqwesileyo kunye nokumelana nokungawi. Olu vavanyo lufumanise ukuba emva kokuba i-cellulose ether ene-viscosity engama-50,000 kunye ne-100,000 imiswe ngokuthe nkqo, iithayile zatyibilika ngqo ezantsi, ngelixa i-cellulose ether ene-viscosity engama-150,000 kunye nama-200,000 ingatyibiliki. I-engile isamiswe ngokuthe nkqo, kwaye akukho kutyibilika kuya kwenzeka.
Amandla odaka lokuplasta
Kusetyenziswa ii-ether ze-cellulose ezingama-50,000, 100,000, 150,000, 200,000, kunye nama-250,000 ukulungiselela iisampulu ze-plastering mortar zokwakha oomatshini, kwafunyaniswa ukuba ngokwanda kwe-ether ye-cellulose ether, ixabiso lamandla e-plastering mortar liyancipha. Oku kungenxa yokuba i-ether ye-cellulose yenza isisombululo esinobukrakra obuphezulu emanzini, kwaye inani elikhulu lamaqamza omoya azinzileyo liya kungeniswa ngexesha lenkqubo yokuxuba i-mortar. Emva kokuba isamente iqinile, la maqamza omoya aya kwenza inani elikhulu lee-voids, ngaloo ndlela kunciphisa ixabiso lamandla e-mortar. Ke ngoko, i-mortar yokuplastering efanelekileyo yokwakha oomatshini kufuneka ikwazi ukuhlangabezana nexabiso lamandla elifunekayo kuyilo, kwaye kufuneka kukhethwe i-ether ye-cellulose efanelekileyo.
Ixesha lokuthumela: Matshi-15-2023