Lub teeb pob zeb Additives | High-Performance Foaming Agents rau Cellular Concrete
Hauv tsev thiab txawv teb chaws, kev tshawb fawb txog kev txhim kho lub zog thaum ntxov ntawm polycarboxylate superplasticizers feem ntau tsom rau ob yam hauv qab no：
1 Ntxiv tus neeg saib xyuas lub zog thaum ntxov rau polycarboxylic acid dej txo tus neeg sawv cev, kom cov dej txo tus neeg sawv cev muaj zog ua haujlwm thaum ntxov
2 Los ntawm kev tsim cov qauv molecular ntawm polycarboxylate superplasticizer, ib thaum ntxov muaj zog polycarboxylate superplasticizer nrog rau thaum ntxov zog zog yog synthesized.
Cov compound thaum ntxov-hom polycarboxylic acid dej txo tus neeg sawv cev yog ntxiv nrog cov khoom muaj zog thaum ntxov hauv polycarboxylic acid dej txo tus neeg sawv cev.Qhov ob yog sib xyaw hauv ib qho kev faib ua feem kom lawv muaj ob qho tib si thaum ntxov thiab dej txo..
Thaum ntxov zog Cheebtsam yuav muab faib ua peb pawg raws li tshuaj muaj pes tsawg leeg:
1 inorganic ntsev (suav nrog chloride ntsev, nitrates, sulfates, carbonates, silicates, lwm.);
2 organic teeb meem (suav nrog triethanolamine, calcium formate, calcium acetate, calcium oxalate, lwm.);
3 hom sib xyaw, Composite organic thiab inorganic tshuaj, xws li triethanolamine thiab sodium sulfate complex.
Lub ntsiab mechanism rau lub zog thaum ntxov ntawm kev sib xyaw ntawm cov tshuaj inorganic ntsev (sodium chloride, calcium chloride) thiab polycarboxylate superplasticizers yog qhov kev txiav txim ntawm C3A thiab chloride ntsev hauv cov cement los ua dej-insoluble chlorohydrates. ,Sodium sulphate tuaj yeem cuam tshuam nrog Ca(OH)2 los tsim calcium sulphate. Cov calcium sulphate no muaj qhov zoo dispersibility thiab yooj yim rau tsim hydrated calcium sulphoaluminate crystal nrog tricalcium aluminate., Cov txheej txheem hydration ntawm tricalcium silicate yog nrawm, thiab lub hardening ntawm pob zeb yog ceev.
Cov kev tshawb fawb tau pom tias 3d lub zog ntawm NaCl hauv 0.75% ntawm cov pob zeb yog nce los ntawm 48%, thiab qhov fluidity ntawm cov pob zeb sib tov tseem tuaj yeem khaws cia;Lub zog 3d ntawm pob zeb nrog NaNO3 nce los ntawm 38% hauv 0.75% koob tshuaj, thiab kev tiv thaiv zoo tuaj yeem tau txais.
Triethanolamine yog feem ntau siv thaum ntxov zog tivthaiv hauv cov organic teeb meem,Triethanolamine accelerates tsim ntawm ettringite hauv C-S-H system thiab txhim kho lub zog thaum ntxov ntawm pob zeb..
N atom nyob rau hauv triethanolamine yog feem ntau yuav tsim ib tug covalent daim ntawv cog lus nrog ib tug hlau ion los tsim ib tug ruaj khov complex.Qhov tsim ntawm lub complex inevitably rhuav tshem cov khoom xws li cov tricalcium aluminate hydrate thiab cov calcium sulphoaluminate., uas accelerates tus nqi dissolution ntawm lub tricalcium aluminate thiab tetracalcium aluminoferrate.Accelerating lub tsim ntawm calcium sulphoaluminate., Qhov tsim ntawm calcium sulphoaluminate yuav inevitably txo cov concentration ntawm calcium ions thiab txhuas ions, ntxiv txhawb cov hydration ntawm tricalcium silicate.Cov kev tshwm sim qhia tau hais tias lub compressive zog ntawm mortar ntawm 1d, 3d i7d nce 145%, 190% thiab 135% ntawm 0.06% ntawm triethanolamine.
Cov khoom sib xyaw yuav yog cov khoom sib xyaw ntawm cov khoom siv tsis muaj zog thiab cov khoom tsis muaj tshuaj lom, los yog tej zaum yuav yog ib qho kev sib xyaw ntawm cov tshuaj inorganic thiab cov organic, los yog tej zaum yuav yog ib qho kev sib xyaw ntawm cov khoom siv organic thiab cov khoom siv organic.Cov khoom sib xyaw zoo li muaj lub zog zoo thaum ntxov tshaj li ib hom kev sib xyaw., thiab tus nqi sib tov kuj raug txo.
Cov txiaj ntsig tau pom tias cov khoom sib xyaw thaum ntxov polycarboxylic acid dej txo tus neeg sawv cev sib xyaw nrog sodium thiocyanate (1%) + triethanolamine (0.04%) yog muab piv nrog cov mortar tov nrog ntau polycarboxylic acid dej txo tus neeg sawv cev.Qhov hnyav ntawm 1d, 3d, thiab 7d nce 165%, 100%, thiab 39%, raws.
Cie-China.org yog tus thawj coj ua npuas dej ua ke muab kev pabcuam ua npuas ncauj ua npuas ncauj, superplasticizer,ua npuas ncauj qhob zog enhancer rau lub teeb yuag pob zeb, CLC blocks. Yog tias koj tab tom nrhiav superplasticizer, thov koj txhob xav li cas tiv tauj peb.