Tsiku Lotumiza: 23, Sep, 2024
1) Zosakaniza
Mlingo wa admixture ndi wochepa (0.005% -5% ya misa ya simenti) ndipo zotsatira zake ndi zabwino. Iyenera kuwerengedwa molondola ndipo kulakwitsa kwake sikuyenera kupitirira 2%. Mtundu ndi mlingo wa admixtures ayenera kutsimikiziridwa kudzera kuyesera zochokera zinthu monga konkire ntchito zofunika, zomangamanga ndi nyengo nyengo, zopangira konkire ndi kusakaniza mawerengedwe. Mukagwiritsidwa ntchito ngati njira yothetsera, kuchuluka kwa madzi muzitsulo ziyenera kuphatikizidwa mu kuchuluka kwa madzi osakaniza.
Pamene ophatikizana ntchito awiri kapena kuposa zina zimayambitsa flocculation kapena mpweya wa yankho, zothetsera ayenera kukonzekera payokha ndi anawonjezera kuti chosakanizira motero.
(2) Njira yochepetsera madzi
Pofuna kutsimikizira kusakanikirana kofanana, wothandizira kuchepetsa madzi ayenera kuwonjezeredwa mwa njira yothetsera, ndipo ndalamazo zikhoza kuwonjezeka moyenerera pamene kutentha kumakwera. Wothandizira kuchepetsa madzi ayenera kuwonjezeredwa ku chosakanizira nthawi yomweyo ndi madzi osakaniza. Ponyamula konkire ndi galimoto yosakaniza, wothandizira kuchepetsa madzi akhoza kuwonjezeredwa asanayambe kutsitsa, ndipo zinthuzo zimatulutsidwa pambuyo poyambitsa masekondi 60-120. Zosakaniza wamba zochepetsera madzi ndizoyenera kumanga konkriti pamene kutentha kwatsiku ndi tsiku kuli pamwamba pa 5 ℃. Ngati kutentha kwatsiku ndi tsiku kuli pansi pa 5 ℃, kuyenera kugwiritsidwa ntchito limodzi ndi zosakaniza zoyambira mphamvu. Mukamagwiritsa ntchito, tcherani khutu ku vibrating ndi degassing. Konkire wosakanizidwa ndi wothandizira kuchepetsa madzi ayenera kulimbikitsidwa mu gawo loyamba la kuchiritsa. Pakuchiritsa nthunzi, imayenera kufika mphamvu inayake isanatenthedwe. Mankhwala ambiri ochepetsera madzi otsika kwambiri amakhala ndi kutaya kwakukulu akagwiritsidwa ntchito mu konkire. Kutayika kungakhale 30% -50% mu mphindi 30, choncho chisamaliro chiyenera kutengedwa panthawi yogwiritsira ntchito.
(3) Air-entraining agent ndi mpweya wochepetsera madzi
Konkire yokhala ndi zofunika kukana kuzizira kwambiri iyenera kusakanizidwa ndi zopangira mpweya kapena zochepetsera madzi. Konkire yotsekedwa ndi konkire yotsekedwa ndi nthunzi sayenera kugwiritsa ntchito zopangira mpweya. Wothandizira mpweya ayenera kuwonjezeredwa mwa njira yothetsera, choyamba kuwonjezera pa madzi osakaniza. Air-entraining agent atha kugwiritsidwa ntchito limodzi ndi chochepetsera madzi, choyambirira champhamvu, cholepheretsa, ndi antifreeze. Njira yothetsera vutoli iyenera kusungunuka kwathunthu. Ngati pali flocculation kapena mvula, iyenera kutenthedwa kuti isungunuke. Konkire ndi mpweya-entraining wothandizila ayenera umakaniko kusakaniza, ndi kusakaniza nthawi ayenera kukhala wamkulu kuposa 3 Mphindi zosakwana 5 Mphindi. Nthawi yoyambira kukhetsa mpaka kuthira iyenera kufupikitsidwa momwe ndingathere, ndipo nthawi yogwedezeka isapitirire masekondi 20 kuti mupewe kutaya mpweya.
(4) Wochepetsera komanso wochedwetsa kuchepetsa madzi
Iyenera kuwonjezeredwa ngati njira yothetsera. Pamene pali zinthu zambiri zosasungunuka kapena zosasungunuka, ziyenera kugwedezeka mofanana musanagwiritse ntchito. Nthawi yolimbikitsa imatha kukulitsidwa ndi mphindi 1-2. Itha kugwiritsidwa ntchito kuphatikiza ndi zosakaniza zina. Iyenera kuthiriridwa ndikuchiritsidwa pambuyo poti konkire yakhazikika. Retarder siyenera kugwiritsidwa ntchito pomanga konkire komwe kutentha kwatsiku ndi tsiku kumakhala pansi pa 5 ℃, komanso sikuyenera kugwiritsidwa ntchito payokha konkire ndi konkire yothira ndi nthunzi yokhala ndi zofunikira zoyambira mphamvu.
Nthawi yotumiza: Sep-23-2024
