He mea nui te ātete marara hei ine i te kounga o te matū ārai-marara.Hydroxypropyl methyl celluloseHe matū pūmua wairewa-wai te matū nei, e mōhiotia ana ko te kapia wairewa-wai, ko te pūmua wairewa-wai rānei. Ka whakanui ake i te ōritetanga o te ranunga mā te whakanui ake i te matotoru o te wai whakaranu. He momo rauemi pūmua wai-aroha, ka taea te wairewa ki te wai, ka hanga he otinga, he wai marara rānei. E whakaatu ana ngā whakamātautau, ina piki ake te nui o te pūnaha naphthalene superplasticizer, ka whakaitihia te ātete marara o te moata sima hou mā te tāpiri o te superplasticizer. Nā te mea ko te raupapa naphthalene he matū whakaiti wai tino whai hua, nō te mata hohe, ina tāpirihia te matū whakaiti wai ki te moata, ko te matū whakaiti wai i roto i te mata matūriki sima me te utu kotahi, ko te hanganga rere hiko o ngā matūriki sima i hangaia mā te wehewehe, te takai i roto i te hanganga o te tukunga wai, ka ngaro te wāhanga o te sima. I taua wā anō, kua kitea me te pikinga o te ihirangi HPMC, ka pai ake te marara o te moata sima hou.
Ngā āhuatanga kaha o te raima:
I whakamahia te ranunga raima kore-marara HPMC i raro i te wai ki te hanganga turanga piriti o te huarahi tere, ā, ko te kaha hoahoa ko C25. Whai muri i te whakamātautau taketake, ko te horopeta sima ko 400kg, ko te paoa silica whakaranu matū ko 25kg/m3,HPMCKo te horopeta tino pai ko te 0.6% o te horopeta sima, ko te ōwehenga sima wai ko te 0.42, ko te tere o te onepu ko te 40%, ko te hua o te matū whakaiti wai tino whai hua o te naphthalene ko te 8% o te horopeta sima, ko te tauira raima i te hau 28d, ko te kaha toharite ko te 42.6MPa. Ko te kaha toharite o te raima ringihia i raro i te wai me te teitei heke o te 60mm i roto i te wai ko te 36.4mpa mō ngā rā 28, ā, ko te ōwehenga kaha o te raima i hangaia i roto i te wai me te raima i hangaia i roto i te hau ko te 84.8%, e whakaatu ana i te pānga nui.
1. He pānga whakaroa mārama te tāpiri o te HPMC ki te ranunga moata. Mā te whakanui ake i te horopeta HPMC, ka roa ake te wā whakatakoto o te moata. I raro i te āhua ōrite o te horopeta HPMC, ka roa ake te wā whakatakoto o te moata i raro i te wai i tō te hau. He pai tēnei āhuatanga mō te papu raima i raro i te wai.
2, he pai te hononga o te moata sima hou ki te hydroxypropyl methyl cellulose, ā, kāore he toto e puta.
3, i te tuatahi ka heke te horopeta HPMC me te tono wai moata, kātahi ka tino piki ake.
4. Mā te whakaurunga o te whakaiti wai ka pai ake te raruraru o te pikinga o te hiahia wai mō te moata, engari me whakahaere tika, ki te kore ka whakaitihia te ātete marara o te moata sima hou i raro i te wai.
5. He iti noa te rerekētanga o te hanganga i waenga i ngā tauira paru kupenga sima HPMC me ngā tauira kore-marama, ā, he iti noa te rerekētanga o te hanganga me te kiato i waenga i ngā tauira sima ringihia wai me ngā tauira paru kupenga sima ringihia hau. He paku marara te tauira whakakikorua 28d i raro i te wai. Ko te take matua ko te tāpiri o te HPMC ka tino whakaiti i te ngaronga me te marara o te sima i te wā e ringihia ana te wai, engari ka whakaitihia hoki te nui o te whakakīkī sima. I roto i te kaupapa, i raro i te tikanga kia kore e marara i raro i te wai, ka whakaitihia te nui o te ranunga o te HPMC ki te mea ka taea.
6, tāpirihiaHPMCKāore e horahia te ranunga raima i raro i te wai, ā, ka taea te whakahaere i te nui o te kaha pai, e whakaatu ana te kaupapa whakamātautau ko te ōwehenga kaha o te hanga raima i roto i te wai me te hanga i roto i te hau he 84.8%, ā, he nui ake te pānga.
Wā tuku: Paenga-whāwhā-25-2024