Ko tētahi o ngā rerekētanga nui i waenga i te moata maroke me te moata tuku iho ko te whakarerekētanga o te moata maroke ki te iti o ngā tāpiri matū. Ko te tāpiri i tētahi momo tāpiri ki te moata maroke ka kiia ko te whakarerekētanga tuatahi, ko te tāpiri i ngā tāpiri e rua, neke atu rānei, ko te whakarerekētanga tuarua. Ko te kounga o te moata maroke ka whakawhirinaki ki te kōwhiringa tika o ngā wāhanga me te taurite me te whakataurite o ngā wāhanga rerekē. He utu nui ngā tāpiri matū, ā, he nui te awe ki ngā āhuatanga o te moata maroke. Nō reira, i te kōwhiringa o ngā tāpiri, me aro nui ki te nui o ngā tāpiri. Anei tētahi whakataki poto ki te kōwhiringa o ngā tāpiri matū cellulose ether.
Ko te cellulose ether, e mōhiotia ana ko te rheological modifier, he momo ranunga e whakamahia ana hei whakatikatika i ngā āhuatanga rheological o te moata hou, e whakamahia ana i roto i ngā momo moata katoa. Me whai whakaaro ki ēnei āhuatanga i te wā e whiriwhiri ana i te momo me te nui o te mea i tāpirihia:
(1) Te pupuri wai i ngā pāmahana rerekē;
(2) te matotoru, te matotoru;
(3) Te whanaungatanga i waenga i te ōritetanga me te pāmahana, me te awe ki te ōritetanga i te aroaro o te irahiko;
(4) te āhua me te nui o te whakapūngao;
(5) te whakapai ake i te thixotropy me te kaha ki te whakanoho i te moata (he mea e tika ana mō te moata kua pania ki te mata poutū);
(6) Te tere o te whakarewatanga, te āhua me te otinga o te whakarewatanga.
Haunga te tāpiri i te cellulose ether ki roto i te moata maroke (pērā i te methyl cellulose ether), ka taea hoki te tāpiri i te vinyl polyvinyl acid ester, arā, te whakarerekētanga tuarua. Ka taea e te here kore-waro i roto i te moata (sima, gypsum) te whakapūmau i te kaha pēhi teitei, engari he iti noa te pānga ki te kaha kume me te kaha piko. Ka hangaia e te vinyl polyvinyl ester he kiriata pīwariwari i roto i te kōhao sima kohatu, ka taea e te moata te tu atu i te kawenga whakarerekētanga teitei, ka whakapai ake i te ātete kakahu. Kua whakamātauhia e te mahi mā te tāpiri i ngā rahinga rerekē o te methyl cellulose ether me te vinyl polyvinyl ester ki roto i te moata maroke, ka taea te whakarite i te moata here pereti paninga angiangi, te moata parai, te moata parai whakapaipai, te moata pereki poraka raima hau me te moata whakaōrite-ake o te papa ringihanga. Mā te whakaranu i ēnei e rua, ehara i te mea ka whakapai ake i te kounga o te moata, engari ka tino whakapai ake hoki i te whai huatanga o te hanga.
I roto i te mahi tūturu, kia pai ake ai te mahi whānui, me whakamahi he maha ngā ranunga tāpiri. Ko te ōritenga pai i waenga i te ōwehenga tāpiri, te whānuitanga horopeta tika, te ōwehenga, ka taea te whai pānga pai ki te whakapai ake i te mahi a te moata mai i ngā āhuatanga rerekē, engari ko ōna pānga whakarerekētanga o te moata ina whakamahia takitahi he iti noa iho, i ētahi wā ka pā kino, pērā i te muka tāpiri kotahi, ka whakanui ake i te piri o te moata, ka whakaiti i te taumata o te paparanga i te wā kotahi. Heoi, ka nui ake te wai e pau ana i te moata, ka rongoatia ki roto i te paru, ka heke te kaha pēhi. Ina tāpirihia te kaihoko hopu hau, ka taea te whakaiti i te taumata wehewehe moata me te wai e pau ana, engari ka heke te kaha pēhi o te moata nā te nui ake o ngā mirumiru. Whakapai ake i te moata pereki kia tino pai ai te mahi, me te karo hoki i te kino ki ētahi atu āhuatanga, te kaha o te ōritetanga o te moata pereki, te taumata o te paparanga me te whakatutuki i ngā whakaritenga hangarau me ngā ture mō ngā whakaritenga hangarau. I te wa ano, kaua e whakamahi i te putty raima, e penapena ana i te sima, e tiaki ana i te taiao, me ētahi atu, mai i te tirohanga whakaiti wai, matotoru, matotoru wai me te kirihou e uru ana ki te hau. Me mahi i ngā mahi whānui hei whakawhanake me te whakamahi i ngā tāpiringa matū.
Wā tuku: 29 Paenga-whāwhā 2022