Post Date:8,Chikunguru,2024
1. Nhamba yekuderedza mvura inoshanduka kubva kumusoro kusvika pasi, zvichiita kuti zvive zvakaoma kudzora panguva yeprojekti.
Zvishandiso zvekusimudzira zvepolycarboxylic acid-based-based-reducation agents anowanzo kusimudzira mhedzisiro yavo yekudzikisa mvura, seyekudzikisa mvura ye35% kana 40%. Dzimwe nguva chiyero chekudzikisa mvura chakanyanya kukwirira kana ichiedzwa murabhoritari, asi kana zvasvika kunzvimbo yeprojekiti, zvinowanzoshamisa. Dzimwe nguva chiyero chekudzikisa mvura chiri pasi pe20%. Muchokwadi, mwero wekudzikisa mvura itsanangudzo yakasimba. Zvinongoreva kushandiswa kwebhenji simende, imwe musanganiswa ratio, imwe nzira yekusanganisa, uye kutonga kwekongiri kudonha kusvika (80+10) mm zvinoenderana ne "Concrete Admixtures" GB8076 standard. data yakayerwa panguva iyoyo. Zvisinei, vanhu vanogara vachishandisa izwi iri pazviitiko zvakawanda zvakasiyana-siyana kuratidza maitiro ekuderedza mvura kwezvigadzirwa, izvo zvinowanzokonzera kusanzwisisana.
2. Iyo yakawanda yakawanda yemvura-inoderedza agent, zviri nani kugadzirisa mvura.
Kuti ugadzirise kongiri yakasimba-yakasimba uye kuderedza chiyero chemvura-simende, vashandi veinjiniya nehunyanzvi vanowanzoda kuramba vachiwedzera huwandu hwepolycarboxylate yekudzikisa mvura mumiririri kuti vawane mhedzisiro yakanaka. Nekudaro, iyo yekudzikisa-mvura mhedzisiro yepolycarboxylic acid-yakavakirwa mvura-yekudzikisa mumiriri inotsamira zvakanyanya pamushonga wayo. Kazhinji, sezvo muyero wemvura-inoderedza agent inowedzera, chiyero chekudzikisa mvura chinowedzera. Nekudaro, mushure mekusvika imwe dosi, iyo yekudzikisa-mvura mhedzisiro kunyange "inodzikira" sezvo dosi inowedzera. Izvi hazvirevi kuti mvura-inoderedza mhedzisiro inoderera kana kuyerwa kunowedzera, asi nekuda kwekubuda ropa kwakakomba mukrete panguva ino, musanganiswa wekrete wakaoma, uye fluidity yakaoma kuratidza nenzira yekudonha.
Kuti uve nechokwadi chekuti mhedzisiro yekuyedzwa yepolycarboxylic acid superplasticizer zvigadzirwa zvese zvinosangana nezviyero, chiyero chechigadzirwa chakatarwa pakuendeswa kunoongororwa hachigone kunge chakanyanya kukwirira. Naizvozvo, mushumo wekutarisa kunaka kwechigadzirwa unongoratidza imwe data rekutanga, uye mashandisiro echigadzirwa anofanira kunge achienderana nemhedzisiro yekuedzwa kweprojekiti.
3. Kongiri yakagadzirwa nepolycarboxylate inoderedza mvura inobuda ropa zvakanyanya.
Zviratidzo zvinoratidza kushanda kwekongiri musanganiswa zvinowanzobatanidza fluidity, kubatana uye kuchengetedza mvura. Concrete yakagadzirwa ne polycarboxylic acid-yakavakirwa mvura-yekuderedza admixtures haiwanzo kuzadzisa zvinodiwa zvekushandisa, uye matambudziko eimwe mhando kana imwe anowanzoitika. Naizvozvo, mumiyedzo chaiyo, isu tinowanzo shandisa mazwi akadai seyakanyanya dombo kufumurwa uye kututira, kubuda ropa kwakanyanya uye kupatsanura, kututira uye kudzika pasi kutsanangura zvakajeka kuita kwekongiri musanganiswa. Izvo zvimiro zvekongiri musanganiswa wakagadzirwa uchishandisa yakawanda polycarboxylic acid-yakavakirwa mvura yekudzikisa maajenti inonetsekana nekushandiswa kwemvura.
Dzimwe nguva kushandiswa kwemvura kunongowedzera ne (1-3) kg/m3, uye musanganiswa wekrete uchabuda ropa zvakanyanya. Kushandisa rudzi urwu rwemusanganiswa hakugone kuvimbisa kufanana kwekudurura, uye zvinozotungamira kune gomba, jecha, uye maburi pamusoro pechimiro. Kukanganisa kwakadaro kusingagamuchirwi kunokonzera kuderera kwesimba uye kusimba kwechimiro. Nekuda kwekutonga kwakadzikama pamusoro pekuonekwa uye kutonga kweaggregate hunyoro mune zvekutengesa kongiri yekusanganisa zviteshi, zviri nyore kuwedzera mvura yakawandisa panguva yekugadzira, zvichikonzera kubuda ropa uye kupatsanurwa kwemusanganiswa wekongiri.
Nguva yekutumira: Jul-08-2024
