Olunye ulwahlulo olukhulu phakathi kodaka oluxubeneyo oluxubeneyo kunye nodaka lwendabuko kukuba udaka oluxutywe omileyo lutshintshwa ngenani elincinci lezongezo zekhemikhali. Ukongeza idibansi enye kudaka olomileyo lomgubo lubizwa ngokuba yi-primary modification, ukongeza ezongezo ezimbini okanye ngaphezulu kuthiwa luhlengahlengiso lwesibini. Umgangatho wodaka olomileyo lwepowder luxhomekeke ekukhethweni okuchanekileyo kwamacandelo kunye nokulungelelaniswa kunye nokuhambelana kwamacandelo ahlukeneyo. Ngenxa yokuba izongezo zeekhemikhali zibiza kakhulu, kwaye zinempembelelo enkulu ekusebenzeni kodaka lomgubo owomileyo. Ngoko ke, xa ukhetha izongezo, isixa sezongezo kufuneka sinikwe kuqala. Oku kulandelayo sisingeniso esifutshane kwindlela yokukhetha i-chemical additive cellulose ether.
I-ether ye-cellulose ikwabizwa ngokuba yi-rheology modifier, i-admixture esetyenziselwa ukulungelelanisa iimpawu ze-rheological zodaka olusanda kuxutywa, kwaye lusetyenziswa phantse kulo lonke uhlobo lodaka. Ezi mpawu zilandelayo kufuneka ziqwalaselwe xa ukhetha iindidi kunye nethamo:
(1) Ukugcinwa kwamanzi kumaqondo obushushu awahlukeneyo;
(2) Ukuqina kwesiphumo, i-viscosity;
(3) Ubudlelwane phakathi kokuhambelana kunye neqondo lokushisa, kunye nefuthe kwi-consistency phambi kwe-electrolyte;
(4) Imo kunye neqondo lokuhlangana kwe-etherification;
(5) Ukuphuculwa kodaka thixotropy kunye nekhono lokubeka (oku kuyimfuneko kudaka olupeyintwe kwindawo ethe nkqo);
(6) Isantya sokuchithwa, iimeko kunye nokuphelela kokuchithwa.
Ukongeza ekongezeni i-cellulose ether (efana ne-methyl cellulose ether) kwi-powder mortar eyomileyo, i-polyvinyl acid vinyl ester inokongezwa, oko kukuthi, ukuguqulwa kwesibini. Izibophelelo ze-inorganic (i-samente, i-gypsum) kwi-mortar inokuqinisekisa amandla aphezulu oxinzelelo, kodwa ibe nefuthe elincinci kumandla okuqina kunye namandla aguquguqukayo. I-acetate ye-Polyvinyl yakha ifilimu e-elastic ngaphakathi kwee-pores zelitye le-samente, eyenza ukuba udaka lukwazi ukumelana nemithwalo ephezulu yokuguqulwa kunye nokuphucula ukuxhathisa ukunxiba. Uqheliselo lubonakalise ukuba ukongeza izixa ezahlukeneyo methyl cellulose etere kunye polyvinyl acid vinyl ester ukuba owomileyo udaka lomgubo unako ukulungiselela obhityileyo-umaleko yokutyibilika ipleyiti bonding udaka, udaka lokutyabeka, udaka lokuhombisa ukupeyinta, kunye nodaka lokwakha iibhloko zekhonkrithi esebenza kakuhle Kwaye udaka lokuzilinganisa lokugalela imigangatho, njl.
Kwisicelo esisebenzayo, ukwenzela ukuba kuphuculwe ukusebenza ngokubanzi, kuyimfuneko ukusebenzisa izongezo ezininzi ngokudibeneyo. Kukho umlinganiselo ofanelekileyo wokudibanisa phakathi kwezongezo. Ngethuba nje uluhlu lwedosi kunye nomlinganiselo ufanelekile, banokuphucula ukusebenza kodaka ukusuka kwiinkalo ezahlukeneyo. Nangona kunjalo, xa isetyenziswe yodwa, umphumo wokuguqulwa kumdaka ulinganiselwe, kwaye ngamanye amaxesha kunye nemiphumo emibi, njengokongeza i-cellulose yodwa, ngelixa ukwandisa ukubumbana kodaka kunye nokunciphisa iqondo le-delamination, ukwandisa kakhulu ukusetyenziswa kwamanzi omdaka kwaye ugcine ngaphakathi kwi-slurry, ekhokelela ekunciphiseni okukhulu kwamandla oxinzelelo; Xa ixutywe kunye ne-agent-entraining agent, nangona i-degree of stratification ye-mortar ingancitshiswa kakhulu, kwaye ukusetyenziswa kwamanzi kuyancipha kakhulu, kodwa amandla oxinzelelo omdaka uya kuncipha ngenxa yobuninzi bomoya. Ukuze kuphuculwe ukusebenza kodaka lwe-masonry ukuya kuthi ga kwinqanaba elikhulu, kwaye kwangaxeshanye uphephe ingozi kwezinye iipropathi zodaka, ukuhambelana, ukubekwa kunye namandla odaka lwe-masonry kufuneka luhlangabezane neemfuno zeprojekthi kunye neenkcukacha zobugcisa ezifanelekileyo. Kwangaxeshanye, akukho i-lime paste isetyenzisiweyo, ukonga I-samente, ukukhuselwa kwendalo, njl., kuyimfuneko ukuthatha amanyathelo abanzi, ukuphuhlisa nokusebenzisa imixube edibeneyo ukusuka kwiimbono zokunciphisa amanzi, ukunyuka kwe-viscosity, ukugcinwa kwamanzi kunye nokuqina, kunye ne-plasticization yokungenisa umoya.
Ixesha lokuposa: May-08-2023