Kungani I-Polycarboxylate Superplasticizer Ibangela Ukugcwala Kokopha Kukakhonkolo

Yini eyenza i-polycarboxylate superplasticizer ibangele ukopha okuxegayo kukakhonkolo?

I-Polycarboxylic acid superplasticizer iyi-superplasticizer encibilika emanzini ikakhulukazi eyakhiwe nge-polymer exhunyelelwe i-carboxylate, okungase ngempumelelo ngcono izakhiwo ezihlukahlukene ukhonkolo, ngcono amandla, anti-permeability, anti-carbonation, anti-shrinkage kanye nokuqina kokhonkolo. Nokho, ngenxa yethonya lezici ezihlukahlukene, ukhonkolo oxutshwe ne-polycarboxylic acid isinciphisi samanzi ngokuvamile uzobonakala ulele, ukopha nezinye izenzakalo, okuzothinta kakhulu ukwakhiwa.

Izizathu eziyinhloko yilezi ezilandelayo:

(1) Ukusetshenziswa ngokweqile kwesinciphisi samanzi se-polycarboxylic acid

I-ejenti yokunciphisa amanzi ye-Polycarboxylic acid ingathuthukisa ngempumelelo ukuwohloka kokhonkolo, kodwa inani lokuxuba likhulu kakhulu futhi izinga lokunciphisa amanzi liphezulu kakhulu (eduze nomkhawulo wokuxuba, izinga lokunciphisa amanzi lingaphezulu 40%). Ikhono lokuhlakazeka linamandla kangangokuthi lizonciphisa kakhulu ukuhlangana kokhonkolo futhi kukhishwe amanzi amaningi mahhala, ngaleyo ndlela kwandisa amathuba okopha okukhonkolo. Ikakhulukazi lapho abantu besebenzisa ukukhishwa kancane kanye nohlobo lokuwohloka lwe-polycarboxylic acid yokunciphisa amanzi, ukuxuba kakhulu kulula ukubangela ukopha okukhonkolo okusalele futhi kubangele ukuhlukaniswa uma kubi. Ngakho-ke, ngaphambi kokusetshenziswa, kuyadingeka ukwenza ukuhlolwa kwesikhathi esithuthukisiwe ukuze ubuke ukuguqulwa kwesimo sokukhonkolo.

(2) isinciphisi samanzi se-polycarboxylic acid siyazwela ekushiseni kwemvelo futhi sinendawo yokukhulula kancane

Uma kuqhathaniswa namanye ama-ejenti okunciphisa amanzi, izakhiwo ze-polycarboxylic acid ejenti yokunciphisa amanzi zithinteka kakhulu izinga lokushisa. Ehlobo, lapho izinga lokushisa liphezulu, isinciphisi samanzi se-polycarboxylic acid esisebenza kahle ngokuwohloka kungenzeka sibonakale sinedigri yokwehla “thela omkhulu” okwenzeka lapho izinga lokushisa lincipha ngokuzumayo. Ngakho-ke, lapho izinga lokushisa lehla ngokuzumayo, i-polycarboxylic acid superplasticizer yasekuqaleni kufanele ihlolwe ngaphambi kokusetshenziswa. Ngesikhathi sokukhiqiza, isikhathi sokugqugquzela kufanele selulwe ngokufanelekile ukuze kuhlakazwe ngokuphelele futhi kukhululwe i-polycarboxylic acid superplasticizer, ukuze ugweme umphumela wokukhululwa kancane esigabeni sakamuva, okuholela ekutheni amanzi angagcini kahle ukhonkolo kanye nemvula yamanzi.

(3) Engeza isinciphisi samanzi se-polycarboxylic acid ukulungisa ukuwohloka

Ngaphambi kokuthulula ukhonkolo, lapho kutholakala ukuthi ukusebenza kwengxube kakhonkolo akuhlangabezani nezidingo zokwakha, ukusebenza kukakhonkolo kuvame ukulungiswa ngokwengeza i-polycarboxylic acid superplasticizer ku-mixer kakhonkolo. Nokho, lapho isengezo sesibili silungiswa, ngezinye izikhathi akunakwenzeka ukubamba kahle inani lokusetshenziswa. Lapho inani le-superplasticizer lidlula imfuneko yethiyori, i-superplasticizer eyeqile isadlala indima ngemuva kokuthululwa kukakhonkolo, ukwenza phakathi kokuhlaziywa kokusatshalaliswa kwamanzi okukhonkolo. Ngakho-ke, lapho usebenzisa i-superplasticizer ukulungisa ukusebenza kukakhonkolo, ukhonkolo kufanele wengezwe ngezikhathi ezahlukene ngokusho kobuningi bokhonkolo, futhi ukuxuba kufanele kuqiniswe ukuze kuqinisekiswe ngisho nokuxutshwa kanye nenani elengezayo elilawulekayo.

(4) Lapho i-polycarboxylic acid superplasticizer ihlanganiswa, i-retarder ayizange isetshenziswe ngendlela efanele

Ukuze uthole ukusebenza okuhle kokuvikela ukuwohloka kukakhonkolo, inani elithile lezingxenye zokuhlehlisa ngokuvamile liyengezwa lapho i-ejenti yokunciphisa amanzi ixutshwa. Uma inani lengxenye yokuhlehlisa likhulu kakhulu, noma lapho izinga lokushisa lilihle kodwa i-polycarboxylic acid superplasticizer ehlanganisiwe ihlangabezana nokwehla kwezinga lokushisa okungazelelwe, ingxenye ebambezela kakhulu izobambezela ukugeleza kukasimende futhi ibangele ukopha kukakhonkolo. Ngakho-ke kufanele unake ithonya lezingxenye ze-secrete ye-concrete ehlehlisiwe. Ikakhulukazi igebe elikhulu lokushisa phakathi kwemini nobusuku entwasahlobo kanye nenkathi yasekwindla, kufanele unake kakhulu inani le-retarder, ukuze inqubo yokubeka ukhonkolo, ungavimbela amanzi ukuthi antante kancane, ukucwila okuhlanganisiwe, yenza ukopha kukakhonkolo.

(5) ukuhambisana phakathi kukasimende nesinciphisi samanzi se-polycarboxylic acid

Ukwakheka kokhonkolo kuyinkimbinkimbi futhi kulula ukukhiqiza izinguquko zamakhemikhali ezingahlanganisiwe phakathi kwezingxenye. Uma ukuhambisana kukasimende ne-polycarboxylic acid superplasticizer kukubi, okuqukethwe okugcwele kwe-superplasticizer kuzokwenyuka, futhi i-superplasticizer eyeqile izokwandisa isikhathi sokuqala sokusetha sikakhonkolo, futhi wenze amanzi mahhala kukhonki ahlukanise. Ngaphezu kwalokho, lapho i-alkali encibilikayo kusimende iphansi, izinga le-hydration likasimende liba kancane, futhi isenzakalo sokopha lagging ngokuvamile kwenzeka.

Ngaphezu kwalokho, ohlelweni lwangempela lokukhiqiza ukhonkolo, abantu bavame ukuhlangabezana nokuguquguquka kwekhwalithi ye-sand aggregate, njengokuthi okuqukethwe kodaka kuningi noma kuncane, okuqukethwe kwamanzi kukhulu noma kuncane, ukuhlukaniswa okuhlanganisiwe, njll. Konke lokhu kuzodala ukopha okukhonkolo noma ngisho nokuhlukaniswa.

I-Cie-China.org ingumhlinzeki oholayo wezithasiselo zikakhonkolo wegwebu ohlinzeka nge-ejenti yokugwedla ukhonkolo, superplasticizer,isithuthukisi samandla kakhonkolo wegwebu kukhonkolo ongasindi, Amabhulokhi e-CLC. Uma ufuna superplasticizer, sicela ukhululeke Xhumana nathi.