Ko te anti-dispersion he tohu hangarau nui hei ine i te kounga o te kaihoko anti-dispersion.Ko te Hydroxypropyl methylcellulose he pūhui polymer wairewa-wai, e mohiotia ana ano he kapia wairewa-wai, he polymer wairewa-wai ranei.Ka whakanui ake i te rite o te ranunga ma te whakanui ake i te pokey o te wai whakaranu.He rauemi polymer hydrophilic.Ka taea te rewa ki roto i te wai kia puta he otinga, he marara ranei.Ko nga whakamatautau e whakaatu ana ka piki ake te nui o te superplasticizer kaha-nui-te-naphthalene, ko te taapiri o te superplasticizer ka whakaiti i te aukati marara o te kumete ciment hou i konatunatua.Ko tenei na te mea ko te whakaheke wai kaha-nui-a-naphthalene he surfactant.Ina whakauruhia te whakaheke wai ki te kumete, ka anga te whakaheke wai ki runga i te mata o nga matūriki ciment kia rite ai te utu o te mata o nga matūriki ciment.Ko tenei whakakorenga hiko e hanga ana i nga matūriki ciment te ahua Ka whakakorehia te hanganga flocculation o te ciment, ka tukuna te wai i takai ki roto i te hanganga, ka puta te ngaro o te waahanga o te ciment.I te wa ano, ka kitea na te pikinga o te ihirangi HPMC, kei te pai haere te aukati marara o te kumete ciment hou.
01. Ko te taapiri o te HPMC ka kitea he paopao ki te ranunga moata.Na te pikinga o nga ihirangi HPMC, ka roa te wa whakatuu moata.I raro i te ihirangi HPMC kotahi, he tere ake te kumete i hangaia i raro i te wai i tera i te rangi mo te Whakanoho ka roa ake te whakatakoto.He painga tenei ahuatanga mo te pupuhi raima i raro i te wai.
02. Ko te taapiri o te kaihoko whakaheke wai ka pai ake te raru o te nui haere o te hiahia wai mo te kumete, engari me whakahaere tika tana inenga, ki te kore ka heke iho te parenga marara o raro i te wai o te kumete ciment hou i konatunatua i etahi wa.
03. He iti noa te rereketanga o te hanganga i waenga i te tauira whakapiri ciment i konatunatua ki te HPMC me te tauira patea, a he iti noa te rereketanga o te hanganga me te kiato o te tauira whakapiri ciment i ringihia ki te wai me te hau.Ko te tauira i hangaia i raro i te wai mo nga ra 28 he paku kirikiri.Ko te take nui ko te taapiri o te HPMC ka nui te whakaheke i te mate me te marara o te ciment i te wa e ringihia ana ki te wai, engari ka whakaiti ano i te totika o te kohatu ciment.I roto i te kaupapa, i raro i te ahuatanga o te whakarite i te paanga o te kore e marara i raro i te wai, me whakaheke te inenga o te HPMC ka taea.
Ko te whakaurunga raima kore-dispersible HPMC i raro i te wai ka whakamahia i roto i te miihini turanga piriti o te huarahi tere, a ko te taumata kaha hoahoa ko C25.E ai ki te whakamatautau taketake, ko te nui o te ciment he 400kg, ko te 25kg / m3 te nui o te ciment, ko te nui o te HPMC ko te 0.6% o te nui o te ciment, ko te wai-ciment ko te 0.42, ko te tere o te kirikiri he 40%, me te whakaputanga o te naphthalene-nui te whakaheke wai ko te nui o te ciment he 8%, ko te tauira raima i te rangi mo nga ra 28, ko te kaha toharite ko 42.6MPa, ko te raima o raro me te teitei o te maturuturu o te 60mm mo nga ra 28 , ko te kaha toharite ko 36.4MPa, ko te kaha o te kaha o te raima i hangaia e te wai me te raima i hangaia e te rangi 84.8%, he nui ake te painga.
Te wa tuku: Apr-24-2023