Udongwe oluyimpuphu lubhekisa kwizinto ezibunjiweyo okanye ezibunjiweyo ezenziwe ngokuxuba izinto ezihlanganisiweyo, izinto ezingezizo izinto ezingaphiliyo, kunye nezongezo ezomileyo zaza zahluzwa ngokwemilinganiselo ethile. Zeziphi izongezo ezisetyenziswa rhoqo kwi-dry powder mortar? Udongwe oluyimpuphu ngokubanzi lusebenzisa isamente yasePortland njengezinto ezihlanganisiweyo, kwaye ubungakanani bezinto ezihlanganisiweyo ngokubanzi buyi-20% ukuya kwi-40% yodongwe oluyimpuphu; Uninzi lwee-fine aggregates zisanti ye-quartz kwaye zifuna inani elikhulu lonyango lwangaphambi kokusetyenziswa njengokomisa nokucoca ukuqinisekisa ukuba ubungakanani beesuntswana kunye nomgangatho wazo ziyahlangabezana neemfuno zefomyula; Ngamanye amaxesha uthuthu oluyimpukane, umgubo we-slag, njl. nazo zongezwa njenge-admixtures; Ii-admixtures zihlala zisetyenziswa ngamanani amancinci, ukusuka kwi-1% ukuya kwi-3%, kodwa zinempembelelo ebalulekileyo. Zihlala zikhethwa ngokweemfuno zefomyula yemveliso ukuphucula ukusebenza kakuhle, ukubekwa, amandla, ukushwabana, kunye nokumelana neqabaka kodongwe.
Ziziphi iintlobo zezongezo ze-dry powder mortar ezisetyenziswa rhoqo?
Umgubo welatex ophinda unyibilike
Umgubo welatex ophinda udibane unokuphucula ezi mpawu zilandelayo kwi-dry powder mortar:
① Ukugcinwa kwamanzi kunye nokusebenza lula kwesamente esandula ukuxutywa;
② Ukusebenza kokubopha kwee-base layers ezahlukeneyo;
③ Ukuguquguquka nokusebenza kodaka;
④ Amandla kunye nokunamathelana okugobileyo;
⑤ Ukumelana nokunxitywa;
⑥ Ukunyamezela;
⑦ Ukuxinana (ukungaguquki).
Ukusetyenziswa kweumgubo welatex ophinda unyibilikekwi-plastering mortar enomgangatho obhityileyo, i-ceramic tile binder, inkqubo yokukhusela udonga yangaphandle, kunye nezixhobo zomgangatho ezizilinganisayo zibonakalise iziphumo ezilungileyo.
Iarhente yokugcina amanzi kunye nokwandisa ukuqina
Izinto zokugcina amanzi ziquka ikakhuluii-ether ze-cellulose, ii-starch ethers, njl. I-cellulose ether esetyenziswa kwi-dry powder mortar ikakhulu yi-methyl hydroxyethyl cellulose ether (I-MHECkunye ne-hydroxypropyl methyl cellulose ether (I-HPMC).
Iarhente yokunciphisa amanzi
Umsebenzi osisiseko wee-arhente zokunciphisa amanzi kukunciphisa imfuno yamanzi kwi-mortar, ngaloo ndlela kuphuculwe amandla ayo okucinezela. Ii-arhente zokunciphisa amanzi eziphambili ezisetyenziswa kwi-mortar eyomileyo ziquka i-casein, i-arhente yokunciphisa amanzi esekelwe kwi-naphthalene, i-melamine formaldehyde condensate, kunye ne-polycarboxylic acid. I-Casein yi-superplasticizer egqwesileyo, ingakumbi kwi-mortar enomgangatho omncinci, kodwa ngenxa yendalo yayo, umgangatho wayo kunye nexabiso layo lihlala litshintshatshintsha. Ii-arhente zokunciphisa amanzi ze-Naphthalene series ezisetyenziswa rhoqo yi-β-Naphthalenesulfonic acid formaldehyde condensate.
I-Coagulant
Kukho iintlobo ezimbini ze-coagulants: i-accelerator kunye ne-retarder. Ii-accelerator agents zisetyenziselwa ukukhawulezisa ukubekwa kunye nokuqina kwe-mortar, kwaye i-calcium formate kunye ne-lithium carbonate zisetyenziswa kakhulu. I-Aluminate kunye ne-sodium silicate nazo zingasetyenziswa njengee-accelerators. I-retarder isetyenziselwa ukucothisa ukubekwa kunye nokuqina kwe-mortar, kwaye i-tartaric acid, i-citric acid kunye neetyuwa zayo, kunye ne-gluconate zisetyenziswe ngempumelelo.
Iarhente engangeni manzi
Izinto zokuthintela amanzi ziquka ikakhulu izinto ezidityanisiweyo zepolymer ezifana ne-iron chloride, izinto ezidityanisiweyo ze-organic silane, iityuwa ze-fatty acid, iifayibha ze-polypropylene, kunye nerabha ye-styrene butadiene. I-iron chloride yokuthintela amanzi inefuthe elihle lokuthintela amanzi, kodwa ithambekele ekuboleni kwemivalo yentsimbi kunye neendawo ezifakwe kwisinyithi. Iityuwa ze-calcium ezinganyibilikiyo eziveliswa kukusabela kweetyuwa ze-fatty acid kunye nee-calcium ions kwi-samente phase deposit kwiindonga ze-capillaries, zidlala indima ekuvaleleni ii-pores kwaye zenze ezi ndonga ze-capillary tube zibe yimiphezulu ye-hydrophobic, ngaloo ndlela zidlala indima engangeni manzi. Ixabiso leyunithi yezi mveliso liphantsi kakhulu, kodwa kuthatha ixesha elide ukuxuba i-mortar ngokulinganayo namanzi.
ifayibha
Iifayibha ezisetyenziselwa udoti womgubo owomileyo ziquka ifayibha yeglasi enganyangekiyo yialkali, ifayibha yepolyethylene (ifayibha yepolypropylene), ifayibha yepolyvinyl alcohol enamandla aphezulu kunye nefayibha ephezulu yemodulus (ifayibha yepolyvinyl alcohol),ifayibha yomthi, njl. Ezona zisetyenziswa kakhulu ziifiber ze-polyvinyl alcohol ezinamandla aphezulu kunye neefiber ze-polypropylene. Iifiber ze-polyvinyl alcohol ezinamandla aphezulu kunye neefiber ze-modulus alcohol ezinamandla aphezulu zisebenza ngcono kwaye zixabiso eliphantsi kuneefiber ze-polypropylene ezingeniswe kwamanye amazwe. Iifiber zisasazwa ngokungacwangciswanga nangokulinganayo kwi-matrix yesamente, kwaye zinamathelana ngokusondeleyo nesamente ukuthintela ukwakheka kunye nophuhliso lwee-microcracks, okwenza i-matrix ye-mortar ibe nkulu, kwaye ngaloo ndlela inamandla okungena manzi kunye nokumelana okuhle kakhulu nokuqhekeka. Ubude yi-3-19 mm.
Isifihli
Okwangoku, ii-powder defoamers ezisetyenziswa kwi-dry powder mortar ikakhulu zii-polyols kunye nee-polysiloxanes. Ukusetyenziswa kwee-defoamers akunakulungisa kuphela umxholo we-bubbles, kodwa kukwanciphisa nokuncipha. Kwizicelo ezisebenzayo, ukuze kuphuculwe ukusebenza okubanzi, kufuneka kusetyenziswe izongezo ezininzi ngaxeshanye. Okwangoku, kuyimfuneko ukunaka impembelelo efanayo phakathi kwezongezo ezahlukeneyo. Ukongeza, kuyimfuneko nokunaka ubungakanani bezongezo ezongeziweyo. Zimbalwa kakhulu ukubonisa impembelelo yezongezo; Zininzi kakhulu, kunokubakho iziphumo ebezingalindelekanga.
Ixesha lokuthumela: Agasti-29-2023