Lub luag haujlwm ntawm Alkali-dawb Liquid Accelerator hauv pob zeb yog dab tsi?

Lub luag haujlwm ntawm cov kua alkali dawb accelerators hauv cov pob zeb yog ntau yam thiab tseem ceeb rau kev tsim kho niaj hnub, tshwj xeeb tshaj yog nyob rau hauv kev tsim kho sai xws li tunneling, mining, thiab kho thaum muaj xwm ceev. Cov accelerators no txhim khu kev ceev ntawm pob zeb qhov chaw thiab hardening, uas yog ib qho tseem ceeb nyob rau hauv tej yaam num yuav tsum tau ceev nrooj thiab thaum ntxov zog nce.

Alkali free accelerators yog tsim los ua ib puag ncig zoo thiab muaj kev nyab xeeb rau cov neeg ua haujlwm, hais txog cov kev txhawj xeeb uas cuam tshuam nrog cov tsoos accelerators uas muaj alkali lossis fluorine, uas tuaj yeem ua rau ib puag ncig thiab tib neeg noj qab haus huv. Ib qho tseem ceeb ntawm txoj kev loj hlob nyob rau hauv cheeb tsam no yog tsim ib hom tshiab ntawm alkali-dawb thiab fluorine dawb accelerator. Qhov kev tsim kho tshiab no yog cov muaj pes tsawg leeg uas suav nrog polymeric aluminium sulfate, diethanolamine, magnesium sulfate heptahydrate, thiab nano-silica. Lub formulation yog tsim los txhim kho lub sij hawm teem ntawm cov cement mortar tshiab thiab txhim khu lub compressive thiab flexural zog ntawm lub resulting cement mortar.

Kev tshawb fawb qhia tau hais tias qhov zoo tshaj plaws npaum li cas ntawm no polyaluminium sulfate thaum ntxov lub zog alkali-dawb accelerator yog nyob ib ncig ntawm 7%, uas yuav ua tau.rau kev txhim kho tseem ceeb hauv kev ua kom muaj zog mechanical. Tsis tas li ntawd, lub xub ntiag ntawm ya tshauv thiab moj tej tawg rauv slag nyob rau hauv lub mix, mus txog rau ib tug loj ratio ntawm 15%, yuav ntxiv dag zog rau cov kev muaj zog. Lub accelerator tsis yog tsuas yog ua kom cov dej kub tso tawm ntawm cov cement tab sis kuj txo lub sij hawm kom ncav cuag qhov kub siab tshaj plaws, qhia txog kev ua kom cov cement hydration ntau dua.

Cov txheej txheem los ntawm cov kev txhim kho no tau pom muaj xws li txo cov koob zoo li cov khoom siv dej thiab kev nce hauv cov khoom ntim ntawm cov khoom hydration. Qhov no ua rau muaj kev txhim kho lub zog ntawm cov cement mortar los ntawm kev siv ntau ntawm Ca (OH) 2 thiab tsim cov khoom lag luam compact thiab ruaj khov.

Xws li alkali dawb accelerators tau dhau los ua qhov tseem ceeb hauv kev siv tshuaj tua kab mob, vim lawv lub peev xwm los txo qis rov qab thiab plua plav concentration thaum lub sij hawm txau, ua kom cov tuab ntawm ib qho kev txhaj tshuaj, thiab ua kom cov pob zeb sib xyaw thiab ua kom tawv nqaij.

Kev txhim kho thiab siv cov kua alkali dawb accelerators qhia txog kev tsim kho kev lag luam kev cog lus rau ntsuab, ib puag ncig tus phooj ywg, thiab kev tsim kho kom zoo. Nws sawv cev rau ib kauj ruam tseem ceeb rau pem hauv ntej ntawm kev tsim cov khoom siv uas muaj kev ua haujlwm siab thiab ruaj khov.