Tsiku Lotumiza: 01 Nov, 2021

Konkire kusanganikirana siteshoni pokonza konkire, sangachite popanda zinthu zitatu, akaphatikiza, ufa ndi zinthu zamadzimadzi. Chofunikira chachikulu muzinthu zamadzimadzi ndi madzi ndi zowonjezera, sali gawo losankha, kuchokera kumagulu awo odziyimira pawokha amatha kuwoneka, Ichi ndi gawo lofunika kwambiri la zofunikira zosakaniza konkire.Ndipo kugwiritsa ntchito madzi ochepetsera madzi mumsanganizo ndi malo ofunikira, ndiye kodi chachikulu chochepetsera madzi ndi chiyani? Ndi makhalidwe otani?

Choyamba, tiyeni tiyankhule za chochepetsera madzi konkire chomwe chimagwiritsidwa ntchito kwambiri:sodiumnaphthalenesulfonatenjira yabwino yochepetsera madzi,polycarboxylic acidmkulu mphamvu kuchepetsa madzi wothandizila ndilignin madzi kuchepetsa wothandizira.

Sodiumnaphthalenesulfonate njira yabwino yochepetsera madzi:mtundu uwu wa kuchepetsa madzi ndi kaphatikizidwe mankhwala non air mtundu imayenera kuchepetsa madzi, kuti simenti particles ndi amphamvu dispersing zotsatira, mu kasinthidwe otaya konkire, ndi oyambirira amphamvu, mkulu mphamvu zofunika kuponyedwa-in-situ konkire ndi kumanga chisanadze, kugwiritsa ntchito madzi kuchepetsa wothandizira ali ndi zotsatira zabwino kwambiri.Kukhoza kusintha ntchito ya mbali iliyonse ya konkire comprehensively.The konkire wosakaniza ndi mtundu uwu wa madzi kuchepetsa wothandizira ndi amagwiritsidwa ntchito kwambiri mu Bridges, DAMS, madoko ndi ma docks, tunnel, mphamvu yamagetsi, kusungirako madzi ndi ntchito zomanga zapachiŵeniŵeni ndi zigawo zoteteza zachilengedwe.

Polycarboxylicsmakina apamwamba kwambiri apulasitiki mkulu dzuwa kuchepetsa wothandizila madzi: uwu ndi mtundu watsopano wa madzi kuchepetsa wothandizila, wotchedwa "zabwino" mkulu ntchito konkire admixture, akhoza kusakaniza zosiyanasiyana admixtures mu Mipikisano zinchito admixtures, monga kupopa wothandizila, oyambirira mphamvu wothandizira, anti-seepage agent,coagulant.Kuchepetsa madzi ndi 1%polycarboxylic acid superplasticizerndi 35%, ndipo mphamvu oyambirira chawonjezeka ndi oposa 50%.Izo makamaka oyenera mkulu ntchentche phulusa konkire.

Lignosulphonate ntchito monga konkire kuchepetsa wothandizila madzi mu 0.2-0.3%, akhoza kuchepetsa konkire kusakaniza madzi kumwa 10% -12%, kuchepetsa chiŵerengero madzi simenti, kupulumutsa simenti pafupifupi 10%, kupititsa patsogolo luso konkire ntchito, madzimadzi ndi permeability kukana, kupititsa patsogolo konkire mphamvu ndi compactness, ndi mphamvu oyambirira mphamvu, kufupikitsa nthawi yokhazikitsa, kupititsa patsogolo compressive mphamvu.

Ndi mtundu wanji wa admixture, malinga ndi uinjiniya wamakasitomala omwe amayenera kuchita, timanena kuti malo osakanikirana a konkire amatha kusintha bwino, makamaka chifukwa kusankha kosakanikirana kuli pafupi kwambiri ndi polojekitiyi, ndichifukwa chake pali ntchito zazikulu akadali aganyali pomanga siteshoni yaikulu kusanganikirana osati mwachindunji kugula bizinesi konkire.Mwachitsanzo, alipo mkulu-liwiro njanji kusanganikirana chomera mwapadera kwa ntchito yothamanga njanji.