Post Date:30,Sep,2024
(5) Yekutanga simba mumiriri uye yekutanga simba yekudzikisa mvura mumiririri
Zvimwe zvinowedzerwa zvakananga sehupfu hwakaoma, asi humwe hunofanira kusanganiswa mumhinduro uye kushandiswa maererano nemirairo yekushandisa. Kana yakasanganiswa nenzira yehupfu yakaoma, inofanira kunge yakaoma-yakavhenganiswa nesamende uye yakasanganiswa kutanga, wobva wawedzera mvura, uye nguva yekusanganiswa haifaniri kunge iri pasi pemaminitsi matatu. Kana yakashandiswa semhinduro, mvura inopisa pa40-70 ° C inogona kushandiswa kukurumidza kupera. Mushure mokudururira, inofanira kuvharwa nefirimu yepurasitiki yekurapa. Munzvimbo dzakaderera-kupisa, inofanira kuvharwa nezvinhu zvekudzivirira. Mushure mekugadzirisa kwekupedzisira, inofanira kudiridzwa uye kunyoroveswa nekukasira kurapa. Kana kurapa kweutsi kuchishandiswa kongiri yakasanganiswa neyekutanga simba mumiriri, iyo steam yekurapa system inofanirwa kutariswa kuburikidza nekuyedza.
(6) Antifreeze
Antifreeze ine tembiricha yakananga -5°C, -10°C, -15°C nedzimwe mhando. Paunenge uchiishandisa, inofanira kusarudzwa maererano nekuderera kwekushisa kwemazuva ose. Kongiri yakasanganiswa neantifreeze inofanirwa kushandisa simende yePortland kana simende yakajairwa yePortland ine giredhi resimba risingasviki 42.5MPa. Kushandiswa kwepamusoro alumina simenti kunorambidzwa zvachose. Chloride, nitrite uye nitrate antifreezes zvinorambidzwa zvachose kushandiswa mu prestressed kongiri mapurojekiti. Concrete mbishi zvinhu zvinofanirwa kudziya uye kushandiswa, uye tembiricha yekusanganisa musanganiswa haifanire kunge yakaderera kupfuura 10 ° C; chiyero cheantifreeze uye mvura-simende ratio inofanira kunyatsodzorwa; nguva yekusanganiswa inofanira kuva 50% yakareba kudarika kusanganiswa kwekushisa kwemazuva ose. Mushure mokudururira, inofanira kuvharwa nefirimu yepurasitiki uye zvinhu zvekudzivirira, uye hapana kunwisa kunofanira kubvumirwa panguva yekugadzirisa pakupisa kusina kunaka.
(7)Kuwedzera mumiririri
Isati yavakwa, musanganiswa wekuedzwa unofanirwa kuitwa kuti uone dosi uye kuve nechokwadi chekuwedzera kwekuwedzera. Mechanical mixing inofanira kushandiswa, nguva yekusanganiswa haifaniri kunge iri pasi pemaminitsi matatu, uye nguva yekusanganiswa inofanira kuva masekondi makumi matatu kureba kupfuura iyo yekrete pasina admixtures. Shrinkage-inobhadhara kongiri inofanirwa kuzungunuswa nemuchina kuti ive nechokwadi chekubatana; mechanical vibration haifanire kushandiswa kuzadza kongiri yekuwedzera nekudonha pamusoro pe150mm. Kongiri yakawedzera inofanirwa kurapwa munzvimbo ine hunyoro kwemazuva anopfuura gumi nemana, uye iyo yekupedzisira inofanirwa kurapwa nekupfapfaidza mushonga unorapa.
(8)Accelerating setting agent
Paunenge uchishandisa inomhanyisa kuseta maajenti, kutarisisa kwakazara kunofanirwa kubhadharwa kune kuchinjika kune simende, uye dosi uye mamiriro ekushandisa anofanirwa kubatwa nemazvo. Kana zviri mukati meC3A neC3S mu simenti zvakakwirira, musanganiswa wekongiri we accelerator unofanira kudirwa kana kupfapfaidza mukati memaminitsi makumi maviri. Mushure mokunge kongiri yakaumbwa, inofanira kunge yakanyoroveswa uye inochengetwa kudzivirira kuoma uye kuputika.
Nguva yekutumira: Oct-09-2024
