Post Date:23,Sep,2024
1)Admixture
Iyo dosage yekusanganiswa idiki (0.005% -5% yesamende misa) uye mhedzisiro yacho yakanaka. Inofanirwa kuverengerwa nemazvo uye kukanganisa kwekuyera hakufanirwe kudarika 2%. Mhando uye dhamu yezvisanganiswa zvinofanirwa kutariswa kuburikidza nekuyedza zvichienderana nezvinhu zvakaita senge kongiri kuita zvinodiwa, kuvaka uye mamiriro ekunze, kongiri mbishi zvinhu uye musanganiswa ratios. Kana yakashandiswa muchimiro chekugadzirisa, muwandu wemvura mumushonga unofanirwa kuiswa muhuwandu hwehuwandu hwekusanganiswa kwemvura.
Kana iko kushandiswa kwakasanganiswa kwezviviri kana kupfuura zvinowedzera zvinokonzeresa flocculation kana kunaya kwemhinduro, mhinduro dzinofanirwa kugadzirirwa zvakasiyana uye kuwedzerwa kune musanganisi zvichiteerana.
(2) Mvura inoderedza mumiririri
Kuti uve nechokwadi chekusanganiswa kweyunifomu, iyo inoderedza mvura inofanira kuwedzerwa nenzira yekugadzirisa, uye chiyero chinogona kuwedzerwa zvakakodzera sezvo kutonhora kuchikwira. Mushonga wekudzikisa mvura unofanirwa kuwedzerwa kune musanganisi panguva imwechete semvura inosanganiswa. Paunenge uchitakura kongiri nerori yekuvhenganisa, iyo inoderedza mvura inogona kuwedzerwa isati yatururwa, uye zvinhu zvinoburitswa mushure mekusimudzira kwe60-120 masekonzi. Zvakajairwa-zvinoderedza mvura zvakasanganiswa zvakakodzerwa kuvaka kongiri kana tembiricha yemazuva ese iri pamusoro pe5 ℃. Kana tembiricha yemazuva ese iri pazasi pe5 ℃, inofanirwa kushandiswa pamwe chete neyekutanga-simba admixtures. Paunenge uchishandisa, teerera kune vibrating uye degassing. Concrete yakasanganiswa nemvura-inoderedza mumiririri inofanira kusimbiswa muchikamu chekutanga chekurapa. Munguva yekurapa kweutsi, inofanira kusvika kune rimwe simba isati yapisa. Mazhinji-akanyanya-anoshanda ekudzikisa mvura ane kurashikirwa kukuru kana akashandiswa mukongiri. Kurasikirwa kunogona kuva 30% -50% mumaminitsi makumi matatu, saka kutarisirwa kunofanira kutorwa panguva yekushandiswa.
(3) Air-entraining agent uye air-entraining water-reducation agent
Concrete ine high freeze-thaw resistance inodiwa inofanira kusanganiswa neair-entraining agents kana zvinoderedza mvura. Prestressed concrete uye steam-cured concrete haifaniri kushandisa air-entraining agents. Mhepo-inopinza mumiririri inofanira kuwedzerwa nenzira yekugadzirisa, kutanga yakawedzerwa kumvura inosanganiswa. Air-entraining agent inogona kushandiswa pamwe chete neyekudzikisa mvura, mumiriri wesimba rekutanga, retardant, uye antifreeze. Mushonga wakagadzirirwa unofanira kupedzwa zvizere. Kana paine flocculation kana kunaya, inofanira kudziyiswa kuti iparadze. Concrete ine air-entraining agent inofanira kunge yakasanganiswa nemagetsi, uye nguva yekusanganiswa inofanira kuva yakakura kudarika maminitsi matatu uye isingasviki maminitsi mashanu. Nguva kubva pakuyerera kusvika pakudururwa inofanira kupfupikiswa zvakanyanya sezvinobvira, uye nguva yekuzunguza haifanirwe kudarika masekonzi makumi maviri kudzivirira kurasikirwa nemhepo.
(4) Retardant uye kunonoka kuderedza mvura mumiririri
Inofanira kuwedzerwa nenzira yemhinduro. Kana paine zvakawanda zvisinganyunguriki kana zvisinganyungudika, zvinofanirwa kuzunguzwa zvakaenzana zvisati zvashandiswa. Nguva yekukurudzira inogona kuwedzerwa nemaminitsi 1-2. Inogona kushandiswa pamwe chete nezvimwe zvinosanganiswa. Inofanira kudiridzwa uye kuporeswa mushure mokunge kongiri yapera. Retarder haifanirwe kushandiswa mukuvaka kongiri uko tembiricha yemazuva ese iri pazasi 5 ℃, uye haifanirwe kushandiswa yega kongiri uye yakaporeswa kongiri ine simba rekutanga zvinodiwa.
Nguva yekutumira: Sep-23-2024
