Kaihurihuri(I)

Te Ra Whakairi: 9, Haratua, 2022

(一) Te urutau opolycarboxylate superplasticizer me nga mea sima:

I roto i nga mahi, kua kitea teraKo te Polycarboxylate Superplasticizerhe tino raruraru te urutau ki nga momo sima me nga momo whakauru kohuke rereke, a, i etahi wa ka tino kaikawe. Te urutau i waenga i te sima me tepolycarboxylate superplasticizer ka pangia e nga mea maha. Pērā i: ngā wāhanga ciment, te wāhi mata motuhake, te ihirangi alkali, te ihirangi gypsum me nga momo ka pa katoa ki te urutau oKo te Polycarboxylate Superplasticizer.

Ko te wāhi waiwai oKo te Polycarboxylate Superplasticizerhe rereke te rereke o nga sima, ka whakahekehia te tere o te whakaheke wai, ka piki ake te heke o te raima, ka puta te ahuatanga o te "te toenga o te pini pi" i te kore o te pupuhi o te raima, me nga raruraru o te toto, te parataiao me te wehewehe, me te uaua ki te pupuhi. , Te tairongo ki te inenga, kaore e taea te whakatuwhera i te raima, te tuku rawa ranei. Hei tauira, ko te ihirangi opolycarboxylate superplasticizer mo te A ciment he 1.8% (maamaa o te 10%) ki te whiwhi i te ahua pai, ko te B ciment me konatunatua ki te 2.2% kia pai ake te ahua, a, i etahi wa ka neke ake i te 2.2% % o te inenga, ko te ranunga raima. he kaha ki te whakaheke toto.

I tenei wa, mo te urutau oKo te Polycarboxylate Superplasticizer, ko nga otinga e whai ake nei:

(1) I runga i te kaupapa o te whakarite i te kaha o te raima, ma te whakatika i te tere o te kirikiri, te rahi o te rahi o te kohinga nui, me te whakanui ake i te nui o te slurry pūnaha raima;

(2) Ka whakahuihuitia te waipiro whaea ki nga lipid ether ka tika te whakanui i te horopeta. Ko te tikanga, e taunaki ana kia pai ake te painga o nga ethers me te lipids 5:5, a me whakanui ake te inenga ma te 0.2%;

(3) Kia tika te taapiri, te whakarereke ranei i ona waahanga, whakamahia nga miihini whakauru-rangi penei i te SJ, Degussa DY, te whakapumau pahuka AR, K12, te whakanui ake i te waahanga o nga mea whakaheke-pumau, te whakamahi i te konutai gluconate, te huka, te phosphate, te ATMP, te waikawa citric , māngaro kua whakarerekētia me ētahi atu whakararu hiato, ma te whakamahi i te cellulose whakarewa, te kapia xanthan, te dextrin, te whakakao wairewa kua whakarereketia, te taapiri "whanariki" ranei "waikawa" ki te raima ka taea te whakapai ake;

(4) Hurihia te hanganga ngota o te waikawa polycarboxylic, me te whakatika i etahi waahanga i roto i te tukanga whakahiato hei whakatika i tana urutau.

Mo nga whakaurunga, he nui ake te awe o te pungarehu rere i tera o te paura para. I te nuinga o te korero, he pai te urutau o te pungarehu o te remu tuatahi, engari ko te rehu remu tuarua me te tuatoru he ngawari ki te kore hototahi, ina koa ko te rehu remu tuatoru. A, no te he rawakore te kounga pungarehu, te pānga o te whakanui ake i te inenga opolycarboxylate superplasticizeri te wa e kore e taea te whakapai ake. Ko te take nui mo tenei ahuatanga ko te nui o te waro o te pungarehu rererangi tuarua me te tuatoru me te nui o te ngaro o te mura, he nui te kaha o te whakauru o nga matūriki waro ki te whakauru, na reira ka whakaiti i te whakauru o nga whakauru ki te ciment, ka pa ki te wai o te Raima. I te wa e whakamahi ana i te rewharewha rewharewha tuatoru, whakanuia te ihirangi o te whakaiti wai polycarboxylate ma te neke atu i te 50%, kia tutuki ai te reiti whakaheke wai i te wa e whakaranua ai te rewharewha rewharewha kotahi. I te aroaro o te pungarehu o tenei ra me te kounga matatini me nga waahanga rereke, he mea tika ki te whakapakari i te mana o te kounga o te pungarehu rere me te whakapakari i te whakamatautau i te wa e whakamahi ana. polycarboxylate superplasticizer.