Olunye ulwahlulo olukhulu phakathi kodaka olomileyo kunye nodaka lwemveli kukuba udaka olomileyo lutshintshwa ngenani elincinci lezongezo zekhemikhali. Ukongeza udidi olunye lwesongezo kudaka olomileyo lubizwa ngokuba luhlengahlengiso oluphambili, ukongeza ezongezo ezibini nangaphezulu luhlengahlengiso lwesibini. Umgangatho wodaka olomileyo uxhomekeke ekukhethweni okuchanekileyo kwamacandelo kunye nokulungelelaniswa kunye nokuhambelana kwamacandelo ahlukeneyo. Izongezo zekhemikhali zibiza kakhulu kwaye zinempembelelo enkulu kwiipropati zodaka olomileyo. Ngoko ke, ekukhetheni izongezo, inani lezongezo kufuneka libe kwindawo yokuqala. Oku kulandelayo sisingeniso esifutshane ekukhethweni kweekhemikhali izongezo ze-cellulose ether.
I-Cellulose ether eyaziwa ngokuba yi-rheological modifier uhlobo lomxube osetyenziselwa ukunyenyisa iipropati ze-rheological zodaka olutsha oluxutywe, oluphantse lusetyenziswe kulo lonke uhlobo lodaka. Ezi propati zilandelayo kufuneka zithathelwe ingqalelo xa ukhetha iindidi kunye nemali eyongeziweyo:
(1) Ukugcinwa kwamanzi kumaqondo obushushu awahlukeneyo;
(2) ukutyeba, ukuqaqamba;
(3) Ubudlelwane phakathi kokuhambelana kunye neqondo lokushisa, kunye nefuthe kwi-consistency phambi kwe-electrolyte;
(4) imo kunye neqondo le-etherification;
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(6) Izinga lokuchithwa, imeko kunye nokugqitywa kokutshatyalaliswa.
Ukongeza kokongeza i-cellulose ether kumdaka owomileyo (njenge-methyl cellulose ether), unokongeza i-vinyl polyvinyl acid ester, oko kukuthi, ukuguqulwa kwesibini. Isibophelelo se-inorganic kudaka (isamente, igypsum) inokuqinisekisa amandla acinezelayo aphezulu, kodwa inefuthe elincinane kumandla okuqina kunye namandla okugoba. I-Vinyl polyvinyl ester yakha ifilimu e-elastic emngxunyeni wamatye e-samente, yenza udaka lukwazi ukuthwala umthwalo ophezulu we-deformation, ukuphucula ukumelana nokunxiba. Kuye kwangqinwa ngezenzo ukuba ngokongeza izixa ezahlukeneyo zemethyl cellulose ether kunye nevinyl polyvinyl ester kudaka olomileyo, umaleko obhityileyo wokugquma ipleyiti edibanisa udaka, udaka lokutyabeka, udaka lokuhombisa olutyatyekwayo, udaka lwekhonkrithi evundiweyo kunye nodaka oluzilinganisayo lomgangatho ogalelwayo. inokulungiswa. Ukudibanisa ezi zimbini azikwazi nje ukuphucula umgangatho wodaka, kodwa nokuphucula kakhulu ukusebenza kakuhle kokwakhiwa.
Kwisicelo esisebenzayo, ukwenzela ukuba kuphuculwe ukusebenza okubanzi, kuyimfuneko ukusebenzisa ii-admixtures ezininzi. Owona mdlalo ulungileyo phakathi komlinganiselo wokudibanisa, uluhlu oluchanekileyo lwedosi, umlinganiselo, unokuvela kwimiba eyahlukeneyo ibe nesiphumo esithile sokuphucula ukusebenza kodaka, kodwa iziphumo zayo zokuguqulwa kodaka xa isetyenziswa iyodwa ilinganiselwe, ngamanye amaxesha ide ibe nefuthe elibi, elinjalo. njengefayibha enye ene-doped, ekwandiseni ukuncamathela kodaka, ukunciphisa iqondo lokuhluzwa ngaxeshanye, Nangona kunjalo, ukusetyenziswa kwamanzi odaka kwanda kakhulu kwaye kugcinwe kwi-slurry, ekhokelela ekubeni ukuncipha kwamandla oxinzelelo. Xa i-ejenti yokungenisa umoya yongezwa, idigri ye-delamination ye-mortar kunye nokusetyenziswa kwamanzi kunokunciphisa kakhulu, kodwa amandla oxinzelelo omdaka uya kuncipha ngenxa yeebhubhu ezininzi. Ukuphucula udaka lwe-masonry ukuze usebenze kakhulu, ngelixa uthintela ingozi kwenye ipropati, amandla e-masonry mortar consistency, i-degree of stratification kunye nokuhlangabezana neemfuno zobunjineli kunye nemimiselo yenkcazo yobugcisa, kwangaxeshanye, musa ukusebenzisa i-lime putty, ukonga isamente. , ukukhuselwa kokusingqongileyo, njl., ukusuka kunciphiso lwamanzi, i-viscosity, ukutyeba kwamanzi kunye nembono yeplastiki ye-air-entraining, kuyimfuneko ukuthatha amanyathelo abanzi ukuphuhlisa kunye sebenzisa imixube edibeneyo.
Ixesha lokuposa: Apr-29-2022