Dab tsi yuav cuam tshuam rau Kev Pabcuam Lub Neej Ntawm Terrazzo Flooring hauv Shanghai

Cov yam ntxwv uas cuam tshuam rau lub neej kev pabcuam ntawm terrazzo flooring hauv Shanghai yog raws li hauv qab no:

Khoom zoo:
Cov khoom sib xyaw ua ke: Quartz aggregates (xws li pob zeb dawb, SiO ₂ Ntau dua lossis sib npaug li 90%, Mohs hardness 7) muaj 3-5 npaug siab dua hnav tsis kam thiab ntau dua 10 npaug siab dua acid corrosion dua li limestone aggregates (CaCO ∝, Mohs hardness 3). Piv txwv li, ib qho kev cob qhia zaub mov siv limestone aggregates, uas muaj pob zeb detachment tus nqi ntau tshaj 40% vim acidic kua zaub corrosion hauv 3 xyoos, thaum quartz aggregates tsuas hnav 1-2 hli hauv tib qhov xwm txheej.
Particle loj faib: Particle nrog ib tug loj<3mm are easily worn through, while those with a size>10mm yog nquag hollowing vim lawv tus kheej qhov hnyav; Qhov zoo tshaj plaws gradation yog 3-8mm sib xyaw (porosity<30%), which can improve the overall strength by 20% -30%.
Cov ntsiab lus impurity: Pob zeb uas muaj pyrite (FeS ₂) yuav oxidize thiab nthuav thaum raug dej, uas yuav ua rau nto tawg nyob rau hauv 3-5 xyoo. Rau txhua txhua 1% nce nyob rau hauv impurity tus nqi, qhov kev pheej hmoo ntawm cracking nce los ntawm 15%.
Performance of bonding material: Poor quality water reducing agents (containing chloride ions>0.1%) tuaj yeem ua kom nrawm steel hlau thiab tuaj yeem ua rau kev puas tsuaj hauv 10 xyoo; Cov tshuaj pleev xim zoo polymer (xws li VAE) tuaj yeem txo qhov shrinkage los ntawm 40% -60%.
Kev tsim kho zoo:
Grassroots treatment: Poor cleaning of the grassroots (floating ash>5g / ㎡) lossis daim ntawv thov tsis sib xws ntawm tus neeg sawv cev cuam tshuam tuaj yeem ua rau tus nqi hollowing ntau dhau. Rau txhua txhua 1% nce nyob rau hauv hollow cheeb tsam, qhov kev pheej hmoo ntawm kev puas tsuaj nyob rau hauv 5 xyoo nce los ntawm 8%, feem ntau tshwm sim raws li kaum warping thiab pob zeb detachment.
Flatness tswj: Kos nrog tus pas ntsuas 2m. Thaum qhov kev ua yuam kev ntau dua 3 hli, qhov chaw thauj khoom hauv cheeb tsam yuav nrawm nrawm ntawm 25% -40%, tshwj xeeb tshaj yog nyob rau ntawm qhov chaw pib thiab cov kaum sab xis uas hnav pits tuaj yeem tsim.
Thickness tsim: Thaum cov qauv tsim thickness tsawg dua 15 hli, qhov pom qhov tob ntawm lub pob zeb tom qab sib tsoo yog tsawg dua 3 hli, thiab hnav tsis kam lub neej luv luv los ntawm ntau tshaj 50%; Nyob rau hauv kev lag luam scenarios, nws yog tsim nyog los xyuas kom meej lub thickness ntawm Greater los yog sib npaug zos rau 25 hli thiab ib tug pob zeb faus qhov tob ntawm Greater los yog sib npaug zos rau 15 hli.
Bubble control: Bubble rate>5% yuav ua rau muaj kev nce ntxiv hauv cov porosity, txo qhov cuam tshuam los ntawm 30% -50%, thiab nyiam "pob zeb nqaij sib cais" hauv cov khoom hnyav.
Kev sib tsoo raug: Thaum qhov kawg mesh loj tsawg dua 800 mesh, qhov roughness ntawm Ra yog ntau dua 6.3 μ m. Txhua hnub plua plav infiltration yuav nrawm hnav, thiab qhov hnav txhua xyoo yog 0.2-0.5mm siab dua li ntawm 1500 mesh nto.
Kev siv ib puag ncig:
Mechanical load: Thaum qhov hnyav ntawm cov khoom poob siab dua 5kg thiab qhov poob siab dua 1m, nws yuav ua rau muaj kev tawg hauv zos, nrog rau ntau tshaj 5 qhov cuam tshuam ib square meter ib xyoos, ua rau lub neej luv luv ntawm 10% -15%; Thaum cov quartz xuab zeb cov ntsiab lus hauv av hmoov av ntau dua 30%, kev taug kev sib txhuam yog sib npaug rau "sandpaper polishing", thiab txhua xyoo hnav nce 0.5-1 hli, uas yog 2-3 zaug ntawm qhov chaw tsis muaj plua plav.
Wet environment: Long term humidity (moisture content>8%) tuaj yeem ceev cov cement-raws li carbonation, thiab rau txhua txhua 1 txo tus nqi pH, tus nqi corrosion ntawm steel tuav nce 10 npaug; Acid ib puag ncig (pH<4) results in an annual corrosion depth of 0.3-0.5mm.
Kev hloov pauv kub: Hauv thaj chaw uas muaj qhov sib txawv ntawm qhov kub siab tshaj 30℃(xws li qhov chaw txias txias nkag thiab tawm), muaj ntau tshaj 50 lub voj voog ntawm thermal expansion thiab contraction nyob rau ib xyoos, thiab qhov tshwm sim ntawm cov kab nrib pleb yog 2-3 zaug siab dua nyob rau hauv ib puag ncig kub. Qhov nruab nrab txhua xyoo nthuav dav ntawm kev tawg yog 0.1-0.3mm.

Tshuaj lom neeg corrosion: Lub sij hawm ntev kev nkag mus ntawm lub cav roj thiab cov kuab tshuaj yuav ua rau lub hauv paus ntawm cov resin soften. Rau txhua 1 square meter ntawm thaj chaw tiv tauj, lub zog yuav txo qis los ntawm 15% -20% hauv 5 xyoos, thiab nws yooj yim los ua flaking.
Tom qab kev saib xyuas:
Kev saib xyuas thawj zaug: Yog tias cov dej tsis tau khaws cia tsis pub dhau 7 hnub tom qab kev tsim kho, tus nqi shrinkage nce los ntawm 50%, thiab qhov tshwm sim ntawm qhov pib tawg yuav nce los ntawm 5% mus rau 20% -30%, dhau los ua qhov kev puas tsuaj tom qab.
Txoj kev ntxuav: Siv cov hlau xaim pob thiab cov kua qaub ntxuav kom muaj zog. Txhua qhov kev ntxuav tau ua rau saum npoo ntawm 0.01-0.05mm, thiab txhua xyoo hnav tuaj yeem ncav cuag 0.1-0.6mm, uas yog sib npaug rau 1-3 zaug ib txwm hnav.
Kev kho sealing: Tsis siv neeg sealing tsis tu ncua (pom zoo ib xyoos ib zaug), thiab qhov porosity saum npoo nce ntawm 5% mus rau 15% -20%. Qhov tob tob ntawm cov pa phem nce los ntawm 3-5 zaug, ua rau kom lub loosening ntawm aggregates.
Kev kho dua tshiab thiab kev saib xyuas: Thaum lub ntsej muag hnav ntau dua 3 hli thiab tsis muaj kev sib tsoo lossis kev kho dua tshiab, qhov seem ntawm qhov sib xyaw ua ke ntawm qhov tob tsis txaus, thiab qhov hnav tom ntej yuav nce ntau dua ob zaug, uas tuaj yeem ncav cuag qhov kawg ntawm nws lub neej ua haujlwm hauv 2-3 xyoos.