Olunye ulwahlulo olukhulu phakathi kodaka oluxubeneyo oluxubeneyo kunye nodaka lwendabuko kukuba udaka oluxubeneyo olomileyo luguqulwa kunye nenani 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 lokufakela i-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 ze-methyl cellulose ether kunye ne-polyvinyl acid vinyl ester kudaka olomileyo lomgubo kunokulungisa udaka olucekethekileyo lokuthambisa ipleyiti yodaka, udaka lokutyabeka, udaka lokupeyinta, kunye nodaka lwemasonry kwiibhloko zekonkrithi ezifakwe umoya kunye nodaka lokuzilinganisa. ukugalela imigangatho, njl. Ukuxuba ezimbini akunakuphucula kuphela umgangatho wodaka, kodwa kuphucule kakhulu ukusebenza kakuhle kolwakhiwo.
Kwisicelo esisebenzayo, ukwenzela ukuba kuphuculwe ukusebenza ngokubanzi, kuyimfuneko ukusebenzisa izongezo ezininzi ngokudibeneyo. Kukho umlinganiselo ofanelekileyo wokudibanisa phakathi kwezongezo. Ngethuba nje uluhlu lwedosi kunye nomlinganiselo ofanelekileyo, banokuphucula ukusebenza kodaka ukusuka kwiinkalo ezahlukeneyo. Nangona kunjalo, xa isetyenziswe yodwa, umphumo wokuguqulwa kumdaka ulinganiselwe, kwaye ngamanye amaxesha nemiphumo emibi, njengokongeza i-cellulose yodwa, ngelixa ukwandisa ukubumbana kodaka kunye nokunciphisa iqondo le-delamination, ukwandisa kakhulu ukusetyenziswa kwamanzi odaka kunye yigcine ngaphakathi kwe-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 lwemasonry ukuya kuthi ga kwinqanaba elikhulu, kwaye kwangaxeshanye uphephe ingozi kwezinye iipropathi zodaka, ukuhambelana, ukubekwa kunye namandla odaka lwemasonry kufuneka luhlangabezane neemfuno zeprojekthi kunye nobugcisa obufanelekileyo. iinkcukacha. Kwangaxeshanye, akukho ntlama yekalika isetyenzisiweyo, ukonga Isamente, ukukhuselwa kwendalo, njalo njalo, kuyimfuneko ukuthatha amanyathelo abanzi, ukuphuhlisa nokusebenzisa imixube edityanisiweyo ngokweembono zokunciphisa amanzi, ukwanda kwe-viscosity, ukugcinwa kwamanzi kunye nokuqina, kunye iplastiki yokungenisa umoya.
Ixesha lokuposa: Mar-16-2023