Dry powder mortar additives ndi zinthu zomwe zimagwiritsidwa ntchito kupititsa patsogolo magwiridwe antchito a matope opangidwa ndi simenti.

Dothi la ufa wowuma limatanthawuza chinthu chopangidwa ndi granular kapena ufa wopangidwa ndi kusanganikirana kwamagulu, zida za simenti, ndi zowonjezera zomwe zawumitsidwa ndikuwunikiridwa mu gawo linalake. Kodi zowonjezera zomwe zimagwiritsidwa ntchito kwambiri pamatope owuma ndi ati? Zotsatirazi ndizofotokozera zomwe zili muzowonjezera za ufa wowuma wobweretsedwa ndi Jianshe Net kuti afotokoze.

Dothi la ufa wouma nthawi zambiri limagwiritsa ntchito simenti ya Portland ngati simenti, ndipo kuchuluka kwa simenti nthawi zambiri kumakhala 20% mpaka 40% yamatope owuma; Zophatikiza zabwino zambiri ndi mchenga wa quartz ndipo zimafunikira chithandizo chochuluka chisanadze monga kuyanika ndi kuunika kuti zitsimikizidwe kuti kukula kwake kwa tinthu tating'ono ndi khalidwe zimakwaniritsa zofunikira za chilinganizo; Nthawi zina phulusa la ntchentche, ufa wa slag, ndi zina zambiri zimawonjezeredwa ngati zosakaniza; Zosakaniza zimagwiritsidwa ntchito pang'onopang'ono, kuyambira 1% mpaka 3%, koma zimakhala ndi zotsatira zazikulu. Nthawi zambiri amasankhidwa molingana ndi zofunikira za mankhwalawo kuti apititse patsogolo kugwira ntchito, kusanjika, mphamvu, kuchepa, komanso kukana chisanu kwa matope.

Ndi mitundu iti yomwe imagwiritsidwa ntchito kwambiri ya ufa wowuma matope owonjezera?

Redispersible latex ufa

EVA copolymerakhoza kusintha zinthu zotsatirazi mu matope a ufa wowuma:

① Kusungidwa kwamadzi ndikugwira ntchito kwamatope osakanikirana;

② Kuchita kolumikizana kwa magawo osiyanasiyana oyambira;

③ The kusinthasintha ndi mapindikidwe ntchito matope;

④ Mphamvu yopindika ndi mgwirizano;

⑤ Kukana kuvala;

⑥ Kupirira;

⑦ Kukhazikika (kusakwanira).

Kugwiritsa ntchito ufa wa latex wopangidwanso mumatope opaka utoto wopyapyala, matailosi a ceramic binder, makina otchinjiriza pakhoma lakunja, ndi zida zodziyimira pawokha kwawonetsa zotsatira zabwino.

Madzi posungira ndi thickening wothandizira

Madzi osungira madzi makamaka amaphatikizapo ma cellulose ethers, starch ethers, ndi zina zotero.hydroxypropyl methyl cellulose ether(HPMC).

Madzi ochepetsera

Ntchito yayikulu yochepetsera madzi ndikuchepetsa kuchuluka kwamadzi mumatope, potero kumapangitsa mphamvu yake yopondereza. Zida zazikulu zochepetsera madzi zomwe zimagwiritsidwa ntchito mumatope owuma a ufa ndi monga casein, naphthalene yochepetsera madzi, melamine formaldehyde condensate, ndi polycarboxylic acid. Casein ndi Plasticizer wapamwamba kwambiri yemwe amagwira ntchito bwino kwambiri, makamaka pamatope osanjikiza, koma chifukwa ndi chilengedwe, mtundu wake komanso mtengo wake umasinthasintha. Naphthalene mndandanda wochepetsera madzi omwe amagwiritsidwa ntchito kwambiri β-Naphthalenesulfonic acid formaldehyde condensate.

Coagulant

Pali mitundu iwiri ya coagulants: accelerator ndi retarder. Ma Accelerators amagwiritsidwa ntchito kufulumizitsa kukhazikitsa ndi kuumitsa matope, Calcium formate ndi Lithium carbonate amagwiritsidwa ntchito kwambiri, ndipo Aluminate ndi Sodium metasilicate angagwiritsidwenso ntchito ngati ma accelerator. Ma retarders amagwiritsidwa ntchito kuchepetsa kukhazikika komanso kuumitsa matope. Tartaric acid, citric acid ndi mchere wake ndi Gluconic acid akhala akugwiritsidwa ntchito bwino.

Wothandizira madzi

Madzi wothandizila makamaka zikuphatikizapo: Iron(III) kolorayidi, organic silane pawiri, mafuta asidi mchere, polypropylene CHIKWANGWANI, Styrene-butadiene ndi zina macromolecular mankhwala. Iron(III) chloride yosalowerera madzi imakhala ndi zotsatira zabwino zoletsa madzi, koma ndizosavuta kuyambitsa dzimbiri zolimbikitsira komanso zida zophatikizidwa ndizitsulo. The insoluble kashiamu mchere kwaiye ndi zimene mafuta asidi salt ndi ayoni kashiamu mu gawo simenti gawo pa makoma capillaries, amatenga mbali kutsekereza pores ndi kupanga capillary chubu makoma kukhala hydrophobic pamwamba, potero akugwira ntchito madzi. Mtengo wa zinthuzi ndi wotsika, koma zimatenga nthawi yayitali kusakaniza matope ndi madzi.

fiber

Ulusi womwe umagwiritsidwa ntchito popanga matope a ufa wowuma umaphatikizapo ulusi wa galasi wosamva alkali, ulusi wa polyethylene (polypropylene fiber), ulusi wamphamvu kwambiri komanso wapamwamba wa polyvinyl alcohol fiber (polyvinyl alcohol fiber), ulusi wamatabwa, ndi zina zambiri. high modulus polyvinyl alcohol fibers ndi polypropylene fibers. Mphamvu zapamwamba komanso ulusi wambiri wa modulus wa polyvinyl mowa umagwira ntchito bwino komanso mtengo wotsika kuposa ulusi wa polypropylene wochokera kunja. Ulusi amagawidwa mosagwirizana komanso mofanana mu matrix a simenti, ndipo amalumikizana kwambiri ndi simenti kuti ateteze mapangidwe ndi kukula kwa ma microcracks, kupangitsa kuti matrix amatope akhale ochuluka, motero amakhala ndi ntchito yosalowa madzi komanso mphamvu yabwino komanso kukana kusweka. Kutalika ndi 3-19 mm.