Te Hydroxypropyl methylcellulose (HPMC), hei tētahi o ngā tāpiringa pūmua waro e whakamahia whānuitia ana i roto i ngā rauemi sima, ko te mahi matua he whakapai ake i te mahi, te pupuri wai, me te piri o te moata, o te raima rānei. Heoi, hei pūmua wai-aroha, ka pā anō hoki te HPMC ki te tukanga whakamakuku me te hanganga moroiti o te sima ki ngā taumata rerekē, ā, ka tino pā ki ngā āhuatanga o te rauemi kua whakapakeketia. Mā te rangahau hohonu ki tana tikanga mahi ka āwhina i te whakahaere pūtaiao i tōna horopeta i roto i ngā tono hangarau, ka whakapai ake i te pumau o te pūnaha me te kaha whakamutunga.
1.Ko te pānga tino tika o te HPMC ki te tukanga whakamakuku sima e ahu mai ana i tōna pānga pupuri wai. Me nui te wai kore utu mō te whakamakuku sima, engari i te wā e whakarite ana i te moata, nā ngā āhuatanga pēnei i te mimiti wai me te mimiti mai i te papa, ka tere te ngaro o te wai, ka hua ake he whakamakuku kāore i oti. Mā te hanga i tētahi hanganga whatunga toru-ahu matotoru, ka whakanui ake te HPMC i te matotoru me te kaha pupuri wai o te paru, ka pupuri i te wai i roto i te pūnaha me te whakaroa i te hekenga o te wai kore utu ki waho. He rite tēnei tukanga ki te "tuku wai whakaroa." Nō reira, ka taea e te HPMC te whakaroa i te tere whakamakuku i ngā wāhanga tōmua, engari ka whakarato tonu i te makuku ki ngā matūriki sima, ka taea ai te whakamakuku tino pai ake i ngā wāhanga waenga me muri mai, ka whakapai ake i te kiato hanganga.
2.Ko te awe o te HPMC ki te whanonga o te mata o ngā matūriki sima ka whakahaere anō hoki i te tukanga whakamakuku. Whai muri i te pupuhi, ka hangaia e te HPMC he kiriata angiangi, ka piri tahi ki te mata o ngā matūriki sima, ka aukati i te atanga tauhohenga whakamakuku. Ko te noho mai o te kiriata kua piri ka whakaroa i te pa tuatahi i waenga i ngā kohuke pēnei i te C3S me te C2S me te wai, ka roa ake te wā whakaoho me te pikinga whakamakuku kua whakaroa. Koinei te take he roa ake te wā whakatakoto o ngā moata kei roto te HPMC. Hei tāpiri, ko te HPMC he nui ake ngā nekehanga whakakapinga, he nui ake rānei te matotoru, he kaha ake te kaha mimiti me te pānga nui ake ki te whakamakuku.
3.Ka whakanuia e te HPMC te matotoru o te pūnaha, ka whakaiti i te rere o te whakapiri sima, ā, ka pā ki te hekenga me te āhua tioata o ngā hua waikura. Ka whakawhāitihia e te matotoru teitei te wāhi tipu tioata, ka hua ake he kirikiri CSH pai ake me ngā tioata Ca(OH)₂, ka whakatairanga i te hanganga ōrite. Ahakoa ka heke pea te kaha o te tīmatanga, ka pai ake te kaha o te wāhanga o muri mai nā te waikura katoa me te hekenga o te porosity capillary.
4.Mō te hanganga moroiti, mā te tāpiri o te HPMC ka hua ake he hanganga whatunga kiato ake o ngā hua whakamakuku. Tērā pea ka ngoikore te mimiti ā-tinana me te CSH gel, ka pai ake te piri o te mata me te whakaiti i te porosity. E whakaatu ana ētahi rangahau, i ngā rahinga tika, ka taea e te HPMC te whakapai ake i ngā hapa hanganga i roto i te rohe whakawhiti mata (ITZ), ka whakarei ake i te pakari whānui me te ātete ki te pakaru o te moata.
5.E rua ngā taha o te pānga o te HPMC ki te whakamakuku sima. Mā te tāpiri nui rawa ka roa te whakamakuku, ka heke te kaha wawe; i te wā kotahi, mā te pikinga o te ihirangi rauropi ka heke te ātete pāmahana teitei o ngā rauemi sima. Nō reira, me whakahaere tika te horopeta i runga i te momo moata, te momo rauemi sima, me ngā āhuatanga hanga. Hei tauira, i roto i ngā rauemi hanga paparanga angiangi pērā i te piri taera me te paura putty, he pai te pānga pupuri wai me te whakaroa wā o te HPMC; heoi, i roto i ngā moata whakatika e hiahia ana ki te kaha wawe teitei, me āta whiriwhiri te ōwehenga matotoru me te tāpiri.
6. HPMCKo te pānga ki te tukanga whakamakuku sima e whakaatahia ana i roto i ngā āhuatanga e toru: te whakaroa i te whakamakuku me te whakatairanga i ngā tauhohenga o muri mai mā te pupuri wai; te whakaroa i te wā whakaoho mā te mimiti; me te whakarerekē i te āhua me te hanganga o ngā hua whakamakuku mā te whakanui ake i te matotoru. Mā te whakahaere tika i te momo me te horopeta o te HPMC ka taea te whakapai ake i te mahi moata me te karo i te pānga nui ki te kaha o mua, ka tutuki ai te taurite pai i waenga i te kaha mahi me ngā āhuatanga miihini.
Wā tuku: Whiringa-ā-rangi 17-2025