Lejè aditif konkrè | Ajan kimen wo-pèfòmans pou konkrè selilè
Entwodiksyon nan konkrè kimen
Kimen konkrè, ke yo rele tou siman kimen, beton selilè ki lejè，konkrè limyè，konkrè kim ki lejè, elatriye. Li se yon kalite materyèl bilding milti-fonksyonèl ki fèt pa etap sa yo: sèvi ak matyè premyè espesyal ki fèt ak bave pa metòd mekanik; ak Lè sa a, bave a te fè nan sispansyon nan materyèl siman. Nan lòt mo, se melanj lan nan konkrè fèt apre melanje konplè, vide bòdi, antretyen.
Dimansyon aplikasyon ak pwopriyete kimen konkrè
Konkrè kimen yo souvan itilize nan twati ak twou fondasyon ranpli ak izolasyon tèmik twati.. Konpare ak konkrè tradisyonèl yo, konkrè kimen gen karakteristik pwa limyè ak ti dansite sou baz prezèvasyon chalè ak izolasyon son..
Entwodiksyon teknoloji konstriksyon kim konkrè
1. Materyèl yo te itilize :(1) dlo a pou konkrè kimen ta dwe satisfè kondisyon ki nan estanda nasyonal yo (jgj63-89) such as the standard for water for concrete mixing. (2) the cement is slag Portland cement with strength grade 42.5 and second-level fly ash. (3) ajan kimen. Foamed concrete through the foaming system of the foaming machine, the foaming agent will be fully foaming, is a polymer with thermal polymer surfactant as organic cement.
2. Construction method: according to the production process and test of foamed concrete, the corresponding proportion can be used to configure the foamed slurry. Mix the cement slurry. According to the type of foam concrete selected by design, mix the weighed additive such as cement into the mixer with fixed amount of water, and keep the mixing time above 2min. The mixer mixes the pre-generated foam and pours it into the cement slurry for about 6min to ensure that the cement foam slurry is homogeneous, and then it can be poured.
3. Construction technology: grassroots treatment: the foundation layout board must be clean, no large area of empty drum, loose. Put an end to the foundation layout loose phenomenon. Pouring and pounding foamed concrete: ensure that the location of reserved holes in foamed concrete is accurate, and the placement of embedded parts conforms to the requirements of the drawings. It is strictly forbidden to adjust the position of reserved holes in the heat insulation layer after the initial setting of concrete, or even to re-process reserved holes. According to the thickness of insulation layer required by construction drawings, determine the elevation position of concrete pouring surface before pouring. If slope is required, adjust the elevation line and slope alignment in advance. Lè konstriksyon an nan kouch izolasyon kim konkrè fini, nivo a, dansite sèk ak epesè nan konkrè kim do-kay yo ta dwe satisfè desen yo konstriksyon ak estanda teknik korespondan yo. Tretman apre vide. Apre beton vide, peye atansyon sou si vitès la koule nan sifas konkrè se inifòm ak si wi ou non wotè a koule se nòmal, epi anrejistre done yo pou referans. Si wotè beton koule gwo epi li depase kondisyon done yo espere, ajoute beton nan wotè ki nesesè nan tan epi chèche konnen rezon an.
4. Pwen konstriksyon: mete pwen kontwòl elevasyon (3m/ pwen) selon egzijans desen konstriksyon yo. Pwen elevasyon yo dwe re-tcheke anvan vide, epi mete liy kontwòl korespondan yo dapre kontwòl elevasyon an. Lè melanje beton kimen, dlo yo ta dwe premye ak materyèl apre melanje respire, otreman li entèdi pou transpòte nan sifas konstriksyon an. Divize sifas k ap travay la epi mete kanpe jwenti konstriksyon. Asire w ke beton an nan jwenti konstriksyon sèl yo jete an plas nan yon sèl fwa. Li entèdi pou jete plizyè fwa nan lo. Lè konstriksyon sifas, sèvi ak baton règ long pou grate plat, longè a pa mwens pase 3m. Apre konstriksyon an fini, peye atansyon sou antretyen an nan konkrè, epi li pa apwopriye pou moun oswa anpile materyèl nan 36h. Lè tanperati konstriksyon an ba, tan an ka pwolonje.
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