Udaka lwempuphu owomile lubhekisela ezintweni ezihlanganisiwe noma ezimpuphu ezakhiwe ngokuxuba okungokoqobo kwama-aggregates, izinto ezingaphili zobumba, kanye nezinye izithako ezomisiwe futhi zahlolwa ngesilinganiso esithile. Yiziphi izithasiselo ezivame ukusetshenziswa kudaka lwempuphu owomile? Udaka lwempuphu owomile ngokuvamile lusebenzisa usimende wasePortland njengento yobumba, futhi inani lezinto zobumba ngokuvamile libalelwa ku-20% kuya ku-40% wodaka lwempuphu owomile; Ama-aggregates amaningi amahle ayi-quartz sand futhi adinga inani elikhulu lokwelashwa kwangaphambili njengokomisa nokuhlola ukuqinisekisa ukuthi usayizi wezinhlayiya zawo kanye nekhwalithi kuyahlangabezana nezidingo zefomula; Ngezinye izikhathi umlotha wempukane, i-slag powder, njll. nazo zengezwa njengezingxube; Izingxube ngokuvamile zisetshenziswa ngamanani amancane, kusukela ku-1% kuya ku-3%, kodwa zinomthelela omkhulu. Zivame ukukhethwa ngokwezidingo zefomula yomkhiqizo ukuthuthukisa ukusebenza kahle, ukubekwa, amandla, ukushwabana, kanye nokumelana neqhwa kodaka.
Yiziphi izinhlobo ezivame ukusetshenziswa zezithasiselo zodaka oluyimpuphu eyomile?
Impuphu ye-latex ephinde ihlakazeke
Impuphu ye-latex ephinde ihlakazeke ingathuthukisa lezi zakhiwo ezilandelayo ku-dry powder mortar:
① Ukugcinwa kwamanzi kanye nokusebenza kahle kwe-mortar esanda kuhlanganiswa;
② Ukusebenza kokubopha kwezingqimba eziyisisekelo ezahlukene;
③ Ukuguquguquka nokusebenza kokuguqulwa kwe-mortar;
④ Amandla nokubumbana okugobile;
⑤ Ukumelana nokuguguleka;
⑥ Ukuqina;
⑦ Ukuqina (ukungaguquguquki).
Ukusetshenziswa kwei-latex powder ephinde ihlakazekengodaka olufakwe ungqimba oluncane, i-ceramic tile binder, uhlelo lokuvikela udonga lwangaphandle, kanye nezinto zokwakha phansi ezizilinganiselayo kubonise imiphumela emihle
I-ejenti yokugcina amanzi nokuqinisa
Izinto zokugcina amanzi zifaka kakhuluama-ether e-cellulose, ama-starch ether, njll. I-cellulose ether esetshenziswa ku-dry powder mortar ikakhulukazi i-methyl hydroxyethyl cellulose ether (I-MHEC) kanye ne-hydroxypropyl methyl cellulose ether (I-HPMC).
I-ejenti yokunciphisa amanzi
Umsebenzi oyisisekelo wama-ejenti okunciphisa amanzi ukunciphisa isidingo samanzi se-mortar, ngaleyo ndlela kuthuthukiswe amandla ayo okucindezela. Ama-ejenti okunciphisa amanzi asetshenziswa ku-mortar eyomile afaka i-casein, i-ejenti yokunciphisa amanzi esekelwe ku-naphthalene, i-melamine formaldehyde condensate, kanye ne-polycarboxylic acid. I-Casein iyi-superplasticizer enhle kakhulu, ikakhulukazi ku-mortar enezingqimba ezincane, kodwa ngenxa yemvelo yayo, ikhwalithi kanye nentengo yayo kuvame ukushintshashintsha. Ama-ejenti okunciphisa amanzi ochungechungeni lwe-Naphthalene avame ukusetshenziswa njenge-β-Naphthalenesulfonic acid formaldehyde condensate.
I-Coagulant
Kunezinhlobo ezimbili zama-coagulant: i-accelerator kanye ne-retarder. Ama-accelerator agents asetshenziselwa ukusheshisa ukubekwa kanye nokuqina kwe-mortar, kanti i-calcium formate kanye ne-lithium carbonate kusetshenziswa kabanzi. I-Aluminate kanye ne-sodium silicate nazo zingasetshenziswa njenge-accelerators. I-retarder isetshenziselwa ukunciphisa ukubekwa kanye nokuqina kwe-mortar, kanti i-tartaric acid, i-citric acid kanye nosawoti wayo, kanye ne-gluconate kusetshenziswe ngempumelelo.
I-ejenti engangeni manzi
Izinto zokuvimbela amanzi zifaka kakhulu izinto ezihlanganisiwe ze-polymer ezifana ne-iron chloride, izinto ezihlanganisiwe ze-organic silane, usawoti we-fatty acid, imicu ye-polypropylene, kanye nerabha ye-styrene butadiene. I-iron chloride yokuvimbela amanzi inomphumela omuhle wokuvimbela amanzi, kodwa ithambekele ekugqwaleni kwemigoqo yensimbi kanye nezingxenye ezifakwe ngensimbi. Usawoti we-calcium onganyibiliki okhiqizwa ukusabela kosawoti we-fatty acid onama-ion e-calcium esigabeni sesimende odongeni lwe-capillary, odlala indima ekuvimbeleni ama-pores nokwenza lezi zindonga zamapayipi e-capillary zibe izindawo ezingangeni manzi, ngaleyo ndlela zidlala indima engangeni manzi. Izindleko zeyunithi yale mikhiqizo ziphansi kakhulu, kodwa kuthatha isikhathi eside ukuxuba udoti ngokulinganayo namanzi.
ifayibha
Imicu esetshenziselwa udoti owomile ifaka phakathi i-fiber yengilazi engamelani ne-alkali, i-polyethylene fiber (i-polypropylene fiber), i-polyvinyl alcohol fiber enamandla aphezulu kanye ne-modulus ephezulu (i-polyvinyl alcohol fiber),i-fiber yokhuni, njll. Esetshenziswa kakhulu imicu ye-polyvinyl alcohol enamandla aphezulu kanye ne-modulus ephezulu kanye nemicu ye-polypropylene. Imicu ye-polyvinyl alcohol enamandla aphezulu kanye ne-modulus ephezulu isebenza kangcono futhi inentengo ephansi kunemicu ye-polypropylene engenisiwe. Imicu isatshalaliswa ngokungajwayelekile nangokulinganayo ku-matrix yesimende, futhi inamathelana eduze ne-simende ukuvimbela ukwakheka kanye nokuthuthukiswa kwemifantu emincane, okwenza i-matrix yesimende ibe nkulu, ngaleyo ndlela ibe nokusebenza okungangeni manzi kanye nokumelana okuhle kakhulu nokuqhekeka. Ubude buyi-3-19 mm.
I-Defoamer
Njengamanje, ama-powder defoamer asetshenziswa ku-dry powder mortar ikakhulukazi ama-polyol nama-polysiloxanes. Ukusetshenziswa kwama-defoamer akugcini nje ngokulungisa okuqukethwe kwebhamuza, kodwa futhi kunciphisa ukuncishiswa. Ezisetshenzisweni ezisebenzayo, ukuze kuthuthukiswe ukusebenza okuphelele, izithasiselo eziningi zidinga ukusetshenziswa ngasikhathi sinye. Kuleli qophelo, kubalulekile ukunaka ithonya elihambisanayo phakathi kwezithasiselo ezahlukahlukene. Ngaphezu kwalokho, kubalulekile futhi ukunaka inani lezithasiselo ezengeziwe. Zimbalwa kakhulu ukubonisa umphumela wezithasiselo; Ziningi kakhulu, kungaba nemiphumela emibi.
Isikhathi sokuthunyelwe: Agasti-29-2023