Rā Whakairi:15, Jan,2024
1.Applicability ki sima:
Ko te hanganga o nga mea raima me nga mea raima he uaua me te rereke.Mai i te tirohanga o te tikanga adsorption-dispersion, kaore e taea te kimi i tetahi kaihoko whakaheke wai e tika ana mo nga mea katoa.Ahakoapolycarboxylate He nui ake te urutau o te kaihoko whakaheke wai i te raupapa naphthalene, kei te kino tonu pea te urutau ki etahi sima.Ko te nuinga o tenei urutau ka kitea i roto i: te whakahekenga o te wai me te piki haere o te heke.Ahakoa he rite tonu te sima, ka rereke te paanga o te kaihoko whakaheke wai i te wa e mira ana te paoro ki te tino pai.
Tikanga:Ka whakamahia e te teihana whakaranu tetahi sima P-042.5R i te takiwa o te rohe hei tuku raima C50 ki tetahi waahi hanga.Ka whakamahia te apolycarboxylatesuperplasticizerkaihoko whakaheke wai.A, no te hanga i te ōwehenga ranunga raima, ka kitea ko te nui o te kaihoko whakaheke wai e whakamahia ana i roto i te sima he iti ake i era atu sima, engari i te wa o te ranu tuturu, ka ine te ahua o te paheketanga o te ranunga raima wheketere ki te 21Omm.I taku haerenga ki te waahi hanga ki te wetewete i te taraka papu raima, ka kitea e au kaore e taea e te taraka te utaina te raima.I whakamohio ahau ki te wheketere kia tukuna he oko.Whai muri i te whakaurunga me te konatunatuahia te matū whakaheke wai, ko te 160mm te hekenga o te tirohanga, e tutuki ana i nga whakaritenga papu.Heoi, i te wa o te mahi wetewete, te ahua kaore e taea te wetewete.I whakahokia tonutia te taraka raima ki te wheketere, me te nui o te wai me te iti o te kai whakaiti.He iti noa te tukunga o te wai, ka tata ki te totoka i roto i te taraka whakaranu.
Te tātari take:Kaore matou i tohe ki te whakahaere i nga whakamatautau urutau me nga whakaurunga ki ia puranga sima i mua i te whakatuwheratanga.
Ārai:Whakahaerehia he whakamatautau whakahiato me te ōwehenga ranunga hanga mo ia puranga sima i mua i te whakatuwheratanga.Whiriwhiria nga whakaurunga e tika ana.Ko te "Gangue" hei whakaurunga mo te sima he ngoikore te urutau ki te polycarboxylate superplasticizernga taputapu whakaheke wai, na me karo ki te whakamahi.
2.Sensitivity ki te kohi wai
Na te whakamahi opolycarboxylate te kaihoko whakaheke wai, ka tino heke te kohi wai o te raima.Ko te kohi wai o te raima raima kotahi ko te nuinga o te 130-165kg;te ōwehenga wai-sima he 0.3-0.4, ahakoa iti iho i te 0.3.Mēnā he iti te whakamahinga o te wai, ko te rereke o te taapiri wai ka nui ake nga huringa o te paheketanga, na te mea ka piki ohorere te ranunga raima ki te heke me te toto.
Tikanga:Ka whakamahia e te teihana whakaranu te sima P-032.5R mai i tetahi wheketere sima hei whakarite raima C30.Ko te tikanga o te kirimana kia 150mm:t30mm te heke ki te waahi hanga.Ka wehe te raima i te wheketere, ko te 180mm te hekenga ine.I muri i te kawe ki te waahi hanga, ka inehia te raima ki te waahi hanga.He 21Omm te paheketanga, a e rua nga taraka raima i whakahokia mai.I te hokinga mai ki te wheketere, ka kitea he 21Omm tonu te heke, a he toto me te delamination.
Take:He pai te urutau o tenei ciment ki tenei kaihoko whakaheke wai, a he paku nui ake te nui o te kaihoko whakaheke wai.Kare i ranea te wa ranu, a ko te paheketanga o te raima i te wa e wehe atu ai i te miihini ehara i te tino paheketanga na te poto o te wa whakaranu.
Ārai:Mo te ciment e pa ana ki te inenga o te polycarboxylatesuperplasticizernga whakauru whakaheke wai, me tika te inenga o nga whakaurunga me te tika o te inenga.Whakaroa tika i te wa ranu.Ahakoa me te whakaranu i te mahanga mahanga, kaua e iti iho i te 40 hēkona te wa whakaranu, me neke ake i te 60 hēkona.
Te wa tuku: Hanuere-15-2024