Lub teeb pob zeb Additives | High-Performance Foaming Agents rau Cellular Concrete
Foaming agents yog cov tshuaj sib xyaw uas muaj qhov sib nqus tshwj xeeb uas ua rau kom muaj qhov permeability ntawm pob zeb. Feem ntau, foaming agents yog siv ua ke nrog aggregates los txhim kho lawv kev ua haujlwm. Lawv kuj tuaj yeem pab txo qis qhov hloov pauv ntawm cov pob zeb thaum kho los ntawm kev txhim kho hydration thiab txhim kho qhov pore qauv ntawm cov npuas dej.. Foaming agents tuaj yeem tsim nrog ntau yam khoom xws li cov pa khib nyiab, limestone, gypsum, ya tshauv thiab xuab zeb. Txawm li cas los, cov pob zeb uas tau tshwm sim muaj lub zog qis qis vim tias cov huab cua voids nws yooj yim rau kev sib tsoo [1].
Qhov sib ntxiv ntawm foam stabilizer los yog PPF tuaj yeem ua rau cov khoom ua haujlwm ntawm foamed pob zeb. Txawm li cas los, Lub teeb yuag foamed concretes fabricated nrog qhov sib ntxiv ntawm foam stabilizer thiab PPF nthuav qhia qhov kev poob qis hauv qhov ntom., thermal conductivity thiab flexural thiab compressive zog raws li lawv cov feem pua nce ntxiv nrog tus neeg sawv cev ua npuas ncauj ntxiv los ntawm 5wt% mus rau 7wt%. Qhov no yog vim muaj coob tus pores tsim los ntawm decomposition ntawm tus neeg sawv cev foaming tuaj yeem ua rau muaj kev cuam tshuam tsis zoo rau cov qauv pore..
Ntxiv nrog rau ua npuas ncauj stabilizer thiab PPF, Kev siv cov tshauv ya ya tau pom tias yuav ua rau kom lub zog compressive thiab thermal conductivity ntawm foamed concretes. Qhov no yog vim hais tias ya tshauv yog cov khoom siv uas tsis tshua muaj zog uas koom nrog hauv cov dej ntawm cov cement thiab txhim kho lub pore qauv ntawm foamed pob zeb..
SEM duab muab rau hauv daim duab 4 qhia tau hais tias lub microstructure ntawm cov pob zeb ua npuas ncauj thaum WMP hloov silica xuab zeb thiab RHA ntxiv rau qhov sib tov. Qhov sib ntxiv ntawm RHA tau txhim kho qhov pore qauv ntawm cov pob zeb los ntawm kev nthuav qhov loj ntawm CSH gels. Qhov sib ntxiv ntawm cov khib nyiab marble kuj tau txhim kho qhov pore qauv los ntawm kev ua kom muaj pes tsawg tus finer grained hais nyob rau hauv kev sib tov..