Ko te kaihoko whakaheke wai raima ko tetahi o nga huarahi hangarau ki te whakaiti i te inenga ciment, te whakapai ake i te reiti whakamahi o te toenga ururua ahumahi, me te mohio ki te mauroa me te mahi nui o te raima.Koinei hoki tetahi o nga rauemi matua mo te whakawhanaketanga o te raima ki te mara hangarau teitei.A ko te momo polycarboxylate te momo whakaheke wai (PC) kua waiho hei momo whakaheke wai whai hua me te tino tere o te whanaketanga me te maakete nui rawa atu na te iti o te paitini me nga ahuatanga tiaki taiao.Ki te whakatauritea ki nga whakaurunga tuku iho, ko nga whakaurunga kua noho hei arotahi mo te rangahau me te whanaketanga puta noa i te ao na te pai o te mararatanga me te kaha ki te pupuri.
Ahakoa ko te wai polycarboxylate e whakaiti ana i te whakaurunga o nga mahi tino pai me te kaha ki te pupuri i te heke pai kua tino mohiotia, engari na te mea ko te hanganga kohuke, te pai o te sima, te ahua o te raima raima me te ihirangi, te taapiri whakaurunga nui, me te whakaurunga o te ranunga raima, te wai. he tino nui te tairongo, tino pa ki nga hua o naianei kei te whakamahia nuitia ki te miihini.
He aha te Mahinga Whakaiti Wai a Polycarboxylate?
Ko te polycarboxylate superplasticizer he momo surfactant kei roto te carboxylic graft copolymer.He heru te ahua o ona ngota ngota, he nui te awenga aukati.I te mea ko te tuatoru o nga whakatipuranga o te kaihoko whakaheke wai mahi nui i muri i te lignosulfonate te kaihoko whakaheke wai noa, te roopu naphthalene raupapa aliphatic, te sulfamate me etahi atu kaihoko whakaheke wai kaha.
Na te mea he pai te mahi hoahoa hanganga rapoi, he nui te whakaheke i te wai, he iti te whakaurunga whakauru, he pai te heke, he pai ake te pai, he iti te nui o te alkali, he iti te awe o te waa, he pai te pai o te hototahi ciment me te kore poke. Ko etahi atu painga ka kiia ko te tino whanaketanga o nga momo kaihoko whakaheke wai.
Ko te superplasticizer Polycarboxylate he superplasticizer tino kaha hou i whakawhanakehia me te whakaputa angitu i muri i te superplasticizer naphthalene, melamine, aliphatic me te sulfamate.I roto i tona ihirangi he iti (te ihirangi totoka 0.15% - 0.25%) ka taea te whakaputa i te wai pai whakaheke me te whakarei ake i te painga, he iti ake te paanga ki te waahi o te waahi o te raima me te pupuri i te whakaheke, he pai te urutau ki te ciment me te whakauru, he iti ake te awe ki te whakamaroke. te whakaheke o te raima (kaore i te nui rawa te whakanui ake i te whakamaroke whakaheke), me te kore e whakamahia te formaldehyde i roto i te mahi hanga me te kore e tuku i te waipiro ururua, SO Ko te iti o te 42- me te Cl- kua whakanuia e nga kairangahau me etahi kaiwhakamahi mai i te timatatanga.
He aha te mea me Whakarerekehia te Superplasticizer Polycarboxylate?
Ka whakatauritea ki nga raupapa naphthalene he tino pai te whakaheke wai, penei i te, ahakoa he polycarboxylic acid wai whakaiti kaihoko i roto i te whakahekenga o te whakahekenga o te tiaki wai he tino painga i roto i nga ahuatanga o te tiaki taiao, engari he raruraru hangarau kei roto i te tono miihini mahi, penei i te wai whakaiti pānga o raima raw rauemi, ranu ōwehenga, wai whakaiti inenga kaihoko ti'aturi he tino nui, he tairongo mahi raima hou ki te inu wai, ngāwari te whakarite o te paparanga wehenga wai nui.Ko te pai o te hototahi ki etahi atu apiha whakaheke wai me nga waahanga whakarereke me te ngoikore o te pumau o nga hua ka nui te aukati i te whakamahinga whanui me te whakawhanaketanga o nga kaihoko whakaheke wai polycarboxylate.
Hei whakakore i nga hapa hangarau i roto i te whakamahinga o te polycarboxylate wai-whakaiti kaihoko, ki te whakapai ake ranei i etahi waahanga ranei o te raima (te mahi, te pupuri i te whakaheke, te whakaheke i te toto, te whakapai ake i te kaha wawe, te iti o te whakaheke, me etahi atu), e tika ana ki te whakarereke i te raima.
I roto i nga mahi, ko nga tikanga whakarereke e whakamahia nuitia ana ko te hangarau waihanga me te hangarau puhui.Ka whakatauritea ki te tukanga waihanga, ko te tikanga whakahiato he painga o te mahi ngawari me te utu iti, na reira ka whakamahia nuitia i roto i nga mahi mahi.Ko te hangarau hangarau raupapa polycarboxylate, ko te raupapa polycarboxylate te kaihoko whakaheke wai me etahi atu waahanga (penei i te puhoi puhoi, te whakaheke, te whakauru o te hau, te kaha wawe me etahi atu waahanga) e ai ki etahi waahanga o te huinga huinga, kia tutuki ai te ruruku o te superposition o ia wāhanga.
Wā tuku: Hūrae-01-2022