Lub teeb pob zeb Additives | High-Performance Foaming Agents rau Cellular Concrete
Shocking fact: Tshaj 60% ntawm kev lag luam hauv pem teb tsis ua hauj lwm pib raws li cov kab nrib pleb uas tshwm sim hauv thawj zaug 28 hnub. Thiab ntawm no yog cov neeg tua neeg-feem ntau ntawm cov kab nrib pleb tuaj yeem tiv thaiv los ntawm xaiv txoj cai pob zeb reinforcement fibers rau industrial flooring es tsis txhob cia siab rau welded hlau mesh.
Ntau ntawm peb nyob rau hauv daim teb tau hlawv los ntawm mesh. Koj paub qhov xyaum-“Tsuas rub lub mesh li koj nchuav.” Thiab ib nrab lub sij hawm nws xaus rau hauv qab, tsis ua dab tsi. Fibers tsis muaj qhov teeb meem. Lawv nyob txhua qhov chaw, hauv txhua qhov cubic nti. Cia peb taug kev raws nraim yuav ua li cas kom tau qhov zoo no.
Kauj ruam 1: Xaiv Koj Hom Fiber-Steel, Macro-Synthetic, los yog Micro
Tsis yog txhua lub fibers sib npaug. Koj qhov kev xaiv nyob ntawm qhov chaw thauj khoom profile thiab slab txoj haujlwm. Nov yog qhov kev faib peb siv rau txhua txoj haujlwm:
- Hlau fibers (ASTM A820 Cov Lus Qhia Tshwj Xeeb): Tus lifter hnyav. Zoo tagnrho rau hnyav-duty industrial flooring nrog forklift tsheb lossis racking loads. Lawv muab structural post-crack toughness. Cia siab tias koob tshuaj nruab nrab 20-40 kg/m³ (35-65 lb/yd³). Lawv ua tsis yog tiv thaiv cov yas shrinkage tawg-uas tsis yog lawv txoj haujlwm.
- Macro-synthetic fibers (ASTM C 1116 1, Hom III): Qhov kev xaiv niaj hnub rau steel. Lawv muab cov khoom tsis muaj corrosion. Zoo meej rau lub freezer warehouses los yog ib puag ncig uas spilling los ntawm xeb yog ib qho kev txhawj xeeb. Kev noj tshuaj: 4-8 kg/m³ (6-13 lb/yd³). Lawv muab cov kev txhawb zog thib ob thiab txhim kho kev cuam tshuam.
- Micro-synthetic fibers (ASTM C 1116 1, Hom I): Tub ceev xwm tawg ua ntej 24 teev. Lawv tswj cov yas shrinkage tawg los ntawm kev txo cov dej los ntshav thiab muab lub peev xwm tensile thaum lub pob zeb tseem ntsuab. Kev noj tshuaj: 0.6-1.8 kg/m³ (1-3 lb/yd³). Lawv ua tsis yog muab cov qauv muaj zog-tsis txhob cuam tshuam lawv nrog macros.
- Sib tov: Ntau zuj zus ntawm cov plag tsev siab siab (e.g., VNA warehouses). Ib qho kev sib xyaw ntawm macro-synthetic thiab micro-synthetic fibers muab rau koj ob qho tib si thaum ntxov-hnub tawg tswj thiab lub sij hawm ntev toughness. You get the best of both worlds.
Kauj ruam 2: Ditch the Wire Mesh-Here’s the Data
Reddit threads are full of horror stories: “I lifted the wire mesh with hooks, and it still ended up on the bottom. Cracks everywhere.” We feel that pain. Let me show you why fibers win.
| Feature | Welded Wire Mesh | Fibers |
|---|---|---|
| Position in slab | Unreliable-often ends up at bottom | Uniformly distributed throughout |
| Crack control-plastic shrinkage | Tsis muaj | Zoo heev (with micro fibers) |
| Crack control-structural | Nruab nrab (if in correct position) | Zoo heev (with steel or macro) |
| Labor to install | Siab-requires tying, nqa, and positioning | Minimal-added at batch plant or job site |
| Corrosion risk | Siab (if exposed) | Tsawg (macro-synthetic) to moderate (hlau) |
On the job site, using fibers instead of mesh can save you 2-3 hours per 100 m² of floor. That’s real money. And you get a floor with more consistent strength.
Kauj ruam 3: Get the Dosage and Mix Procedure Right
Qhov no yog qhov uas peb feem ntau ntsia. Koj tsis tuaj yeem tsuas yog pov tseg cov fibers rau saum cov pob zeb qhuav thiab cia siab rau qhov zoo tshaj plaws. Ua raws li ntu no:
- Batch dej ua ntej. Ntxiv 75% ntawm koj cov dej sib tov rau lub nruas.
- Ntxiv coarse aggregate. Qhov no tsim ib qho kev ua scouring.
- Ntxiv cov fibers maj mam. Rau steel fibers, ib txoj siv conveyor lossis automated dispenser yog qhov zoo tshaj plaws. Rau macro-synthetics, ntxiv rau lawv 30-45 vib nas this. Micro fibers tuaj yeem nkag mus rau hauv lub hnab ua ntej hnyav.
- Ntxiv cov cement thiab nplua aggregate. Ces qhov seem 25% ntawm dej.
- Mix rau 5-7 feeb ntawm kev sib tov ceev (tsis agitating ceev). Saib rau ib qho kev faib tawm. Koj yuav tsum tsis txhob pom clumps los yog “noog zes.”
- Slump check. Cia siab tias yuav txo tau 25-50 mm (1-2 ntiv tes) piv rau cov pob zeb dawb. Tsis txhob ntxiv dej ntxiv rau kev them nyiaj-uas ua rau cov dej-cement piv thiab tsis muaj zog hauv pem teb. Siv lub superplasticizer hloov yog tias xav tau.
Kev noj tshuaj yuav tsum yog qhov tseeb. Rau steel fibers, siv raws nraim 25 kg/m³ rau lub teeb muaj lub luag haujlwm, 35 kg/m³ rau lub luag haujlwm nruab nrab, thiab 45 kg/m³ rau lub luag haujlwm hnyav (e.g., poob-forge hammers). Rau macro-synthetics, qhov chaw qab zib yog 6 kg/m³ rau feem ntau cov ntawv thov kev lag luam.
Kauj ruam 4: Kho koj qhov chaw tso thiab ua kom tiav
Qhov no yog ib feem uas deviates los ntawm dawb pob zeb. Yog tias koj tsuas yog ua haujlwm nrog hlau mesh, koj yuav tau hloov koj mus kom ze:
- Nyuaj sib xyaw yog koj tus phooj ywg. Fibers txo kev ua haujlwm, yog li phiaj xwm poob ntawm 75-100 mm (3-4 ntiv tes) ntawm qhov chaw tso. Ib qho sib xyaw ua ke pab kom cov fibers sib npaug sib npaug thiab tiv thaiv lawv los ntawm kev teeb tsa.
- Siv lub laser screed los yog ib tug roller screed. Nrog fibers, vibrating truss screed ua haujlwm, tab sis koj yuav tsum ua kom nws txav mus. Tsis txhob dhau-vibrate-uas thawb cov fibers cia. Lo rau 15 vib nas this rau qhov nkag rau internal vibrators.
- Kev ua tiav lub sijhawm hloov pauv. Fibers, tshwj xeeb tshaj yog micro-synthetics, txo cov dej los ntshav. Koj yuav tsum pib bull-floating thiab lub zog troweling 15-30 feeb ua ntej tshaj koj xav nrog cov pob zeb dawb. Saib rau saum npoo kom poob nws qhov ci.
- Tshaj tawm fibers ntawm qhov chaw? Qhov no tshwm sim nrog steel fibers yog tias koj lub hwj chim trowel ntxov dhau los yog aggressively. Tsis txhob troweling sai li sai tau thaum qhov chaw kaw thiab ntom. Rau steel fibers, qhov kawg dhau nrog ib lub zog steel trowel tuaj yeem embed lawv. Rau macro-synthetics, lawv tsis tshua tuaj rau saum npoo yog tias koj ua raws sijhawm kom raug.
Ib tus neeg siv Reddit tau hais: “Kuv siv steel fibers thiab muaj hav zoov ntawm lawv lo. Yuav tsum zom tag nrho pem teb. Kawm txog txoj kev nyuaj-cia lub pob zeb teeb tsa ntev dua ua ntej troweling.” Peb txhua tus tau nyob ntawd.
Kauj ruam 5: Tsim cov pob qij txha thiab Subgrade nrog Fibers hauv siab
Fibers hloov qhov kev ua si rau kev sib koom tsim, tab sis lawv tsis tshem tawm qhov xav tau ntawm cov pob qij txha. Nov yog phau ntawv tshiab:
- Kev sib koom ua ke tuaj yeem nce ntxiv. Nrog cov hlau los yog macro fibers, koj tuaj yeem ua qhov chaw saw-txiav cov pob qij txha ntawm 6-9 meters (20-30 ko taw) hloov ntawm qhov raug 4.5 meters (15 ko taw) rau cov pob zeb dawb. Qhov no txo cov txij nkawm thiab txhim kho kev caij tsheb.
- Kev npaj subgrade tseem tseem ceeb heev. Fibers ntxiv toughness, tab sis lawv tsis kho qhov muag muag. Koj qhov modulus ntawm subgrade cov tshuaj tiv thaiv (k-nqi) yuav tsum tsawg kawg 0.05 MPa / hli (50 pci ua) rau industrial floors. Compact rau 95% hloov kho Proctor.
- Load hloov mus rau cov pob qij txha. Aggregates interlock feem ntau yog txaus rau cov pob qij txha fiber ntau, muab qhov dav sib koom ua ke nyob hauv qab 3 mm (1/8 nti). Haum rau kev sib koom ua ke hnyav, xav txog kev ntxiv dowel baskets-fibers ib leeg yuav tsis hloov lub nra ntawm lub saw-txiav sib koom.
- Vapor barrier saum toj los yog hauv qab? Tso lub vapor barrier ncaj qha rau hauv qab lub slab (tsis muaj xuab zeb txheej saum nws). Fibers tsis txo qhov xav tau rau qhov tsim kom zoo vapor retarder (ASTM E 1745 Cov Lus Qhia, Chav Kawm A).
Nyob rau hauv lub freezer warehouses (qhov kub thiab txias -20 ° C), macro-synthetic fibers outperform steel vim lawv tsis corrode los ntawm Frost condensation uas tsim nyob rau hauv lub rwb thaiv tsev.. Peb tau pom steel fibers xeb thiab tawm tom qab 3 khov-thaw cycles.
Koj Mus Ntxiv: Kuaj, Tsis txhob twv
Saib, Kuv yuav tsis qhia koj mus yuav ib lub npe tshwj xeeb. Qhov ntawd tsis yog kuv style. Nov yog qhov kuv xav kom koj ua: Order ib mockup slab. Yam tsawg kawg yog 3m x 3m (10 ft x ua 10 ft). Siv cov pob zeb sib xyaw ua ke, fiber ntau hom, thiab cov neeg ua haujlwm tiav koj npaj siv rau ntawm txoj haujlwm tiag.
Ces ua li no:
- Tos 28 hnub. Noj 3 cores los ntawm mockup. Xa lawv mus rau ib lub lab rau ASTM C 1609 Cov khoom siv (flexural toughness xeem).
- Saib ntawm qhov chaw tawg. Suav cov fibers ib square inch. Yog tias koj muaj tsawg dua 2 fibers ib cm² (12 fibers per in²), nce qhov koob tshuaj.
- Tshawb xyuas qhov chaw. Tsis muaj fiber ntau raug? Zoo. Yog tias koj pom cov fibers, kho lub sijhawm ua tiav.
Pob zeb reinforcement fibers for industrial flooring are not magic. They’re a tool. Siv kom raug, they’ll give you a floor that outlasts the building. Used wrong, you’ll be grinding and patching for years. Make the mockup your friend.
We’ve seen the data. We’ve fixed the failures. Now go pour a floor that won’t crack.
Tus neeg muab khoom
ConcreteAndMore yog ib qho kev ntseeg siab thoob ntiaj teb cov khoom lag luam ntawm cov khoom siv ua haujlwm siab thiab cov tshuaj siv tsim kho.. Nrog xyoo ntawm kev lag luam kev txawj ntse, peb tshwj xeeb hauv kev muab cov kev daws teeb meem tshiab suav nrog polycarboxylate superplasticizers, pob zeb fibers, defoamers, foaming agents, thiab advanced airgel thermal rwb thaiv tsev cov khoom. Yog tias koj txaus siab rau kev sib xyaw ua ke, thov koj xav tiv tauj peb!