Tsiku Lotumiza:10, Nov,2025

Mlingo wa admixtures si mtengo wokhazikika ndipo uyenera kusinthidwa mwamphamvu malinga ndi makhalidwe a zipangizo, mtundu wa polojekiti ndi chilengedwe.

(1) Mphamvu ya katundu wa simenti Mapangidwe a mineral, fineness ndi mawonekedwe a gypsum a simenti amatsimikizira mwachindunji zofunikira zosakanikirana. Simenti yokhala ndi C3A yochuluka (> 8%) imakhala ndi mphamvu yochepetsera madzi ndipo mlingo uyenera kuwonjezeka ndi 10-20%. Pachiwonjezeko chilichonse cha 50m2/kg pamalo a simenti enieni, mlingo wochepetsera madzi uyenera kuonjezedwa ndi 0.1-0.2% kuti uphimbe malo okulirapo. Kwa simenti ndi anhydrite (dihydrate gypsum content <50%), madzi ochepetsera adsorption amadzimadzi amachedwa ndipo mlingo ukhoza kuchepetsedwa ndi 5-10%, koma nthawi yosakaniza iyenera kuwonjezeredwa kuti zitsimikizidwe kuti yunifolomu ibalalika.

(2) Chikoka cha mchere admixtures Makhalidwe adsorption a mchere admixtures monga ntchentche phulusa ndi slag ufa adzasintha ndende yogwira admixtures. Mphamvu ya adsorption ya Class I ntchentche phulusa (chiŵerengero chofuna madzi ≤ 95%) kwa ochepetsera madzi ndi 30-40% yokha ya simenti. Mukasintha 20% ya simenti, mlingo wochepetsera madzi ukhoza kuchepetsedwa ndi 5-10%. Pamene malo enieni a ufa wa slag ndi wamkulu kuposa 450m2/kg, mlingo wosakanikirana uyenera kuwonjezeka ndi 5-8% posintha 40% ya simenti. Pamene phulusa la ntchentche ndi ufa wa slag zimasakanizidwa mu chiŵerengero cha 1: 1 (chiwerengero chonse cholowa m'malo 50%), mlingo wochepetsera madzi ukhoza kuchepetsedwa ndi 3-5% poyerekeza ndi dongosolo limodzi la ufa wa slag chifukwa cha makhalidwe owonjezera a adsorption awiriwo. Chifukwa cha mtunda waukulu wa silika fume (> 15000m2/kg), mlingo wochepetsera madzi uyenera kuwonjezeredwa ndi 0.2-0.3% pa ​​10% iliyonse ya simenti yosinthidwa.

(3) Mphamvu ya akaphatikiza katundu The matope okhutira ndi tinthu kukula kugawa akaphatikiza ndi zofunika zapansi kusintha mlingo. Pakuwonjezeka kwa 1% kwa fumbi lamwala (<0.075mm particles) mumchenga, mlingo wochepetsera madzi uyenera kuwonjezeka ndi 0.05-0.1%, monga momwe fumbi lamwala limayamwa. Ngati zomwe zili ngati singano ndi fulakesi zimaposa 15%, mlingo wochepetsera madzi uyenera kukulitsidwa ndi 10-15% kuti zitsimikizire kutsekeka. Kuonjezera pazipita tinthu kukula coarse akaphatikiza ku 20mm kuti 31.5mm amachepetsa chiŵerengero chopanda kanthu, ndi mlingo akhoza kuchepetsedwa ndi 5-8%.
Mlingo wa admixtures si mtengo wokhazikika ndipo uyenera kusinthidwa mwamphamvu malinga ndi makhalidwe a zipangizo, mtundu wa polojekiti ndi chilengedwe.

(1) Mphamvu ya katundu wa simenti Mapangidwe a mineral, fineness ndi mawonekedwe a gypsum a simenti amatsimikizira mwachindunji zofunikira zosakanikirana. Simenti yokhala ndi C3A yochuluka (> 8%) imakhala ndi mphamvu yochepetsera madzi ndipo mlingo uyenera kuwonjezeka ndi 10-20%. Pachiwonjezeko chilichonse cha 50m2/kg pamalo a simenti enieni, mlingo wochepetsera madzi uyenera kuonjezedwa ndi 0.1-0.2% kuti uphimbe malo okulirapo. Kwa simenti ndi anhydrite (dihydrate gypsum content <50%), madzi ochepetsera adsorption amadzimadzi amachedwa ndipo mlingo ukhoza kuchepetsedwa ndi 5-10%, koma nthawi yosakaniza iyenera kuwonjezeredwa kuti zitsimikizidwe kuti yunifolomu ibalalika.

(2) Chikoka cha mchere admixtures Makhalidwe adsorption a mchere admixtures monga ntchentche phulusa ndi slag ufa adzasintha ndende ogwira admixtures. Mphamvu ya adsorption ya Class I ntchentche phulusa (chiŵerengero chofuna madzi ≤ 95%) kwa ochepetsera madzi ndi 30-40% yokha ya simenti. Mukasintha 20% ya simenti, mlingo wochepetsera madzi ukhoza kuchepetsedwa ndi 5-10%. Pamene malo enieni a ufa wa slag ndi wamkulu kuposa 450m2/kg, mlingo wosakanikirana uyenera kuwonjezeka ndi 5-8% posintha 40% ya simenti. Pamene phulusa la ntchentche ndi ufa wa slag zimasakanizidwa mu chiŵerengero cha 1: 1 (chiwerengero chonse cholowa m'malo 50%), mlingo wochepetsera madzi ukhoza kuchepetsedwa ndi 3-5% poyerekeza ndi dongosolo limodzi la ufa wa slag chifukwa cha makhalidwe owonjezera a adsorption awiriwo. Chifukwa cha mtunda waukulu wa silika fume (> 15000m2/kg), mlingo wochepetsera madzi uyenera kuwonjezeredwa ndi 0.2-0.3% pa ​​10% iliyonse ya simenti yosinthidwa.

(3) Mphamvu ya akaphatikiza katundu The matope okhutira ndi tinthu kukula kugawa akaphatikiza ndi zofunika zapansi kusintha mlingo. Pakuwonjezeka kwa 1% kwa fumbi lamwala (<0.075mm particles) mumchenga, mlingo wochepetsera madzi uyenera kuwonjezeka ndi 0.05-0.1%, monga momwe fumbi lamwala limayamwa. Ngati zomwe zili ngati singano ndi fulakesi zimaposa 15%, mlingo wochepetsera madzi uyenera kukulitsidwa ndi 10-15% kuti zitsimikizire kutsekeka. Kuonjezera pazipita tinthu kukula coarse akaphatikiza ku 20mm kuti 31.5mm amachepetsa chiŵerengero chopanda kanthu, ndi mlingo akhoza kuchepetsedwa ndi 5-8%.