Steel Fiber ilo Precast Concrete: Demoulding, Lifting im Thin Walls

Bwebwenato

Juun 15, 2015

Juon menin eddek eo ejjab kōnan kajoor eo elaptata, ej kōnan jolok mold eo rainin. Jilu men ko rej bōbrae, ien demoulding, jikin kōttāik im joñan depakpak in wall eo, rej kōmman bwe en wor fiber eo.

Ta eo juon Precast Plant ekōnaan ej bwe en rup rainin

Jikin ko rej kōmmani ilo jikin ko rej kea kin kajoor eo eliktata; menin eddek ko rej kea kin oktak. Juon strip ilo juon raan nae juon aolep ruo raan ej kōmman bwe en laplok an maroñ im ukōt wāween an plant depreciation im labor bōk jikin. Un eo moktata kin steel fiber ilo precast ej bwe en maroñ in bōbrae an rup jen an maroñ in rup, bwe juon men en maroñ in bōk, ukōt im jolok ke concrete eo ej dik wōt ilo an jab rup ilo kona ko. Men in ej bar kwalok kin unin an menin eddek ko rekar kōmmane elaplok air maroñ in jeblak jen air kajoor: juon fiber ball emaron bōk kona eo jen juon element ilo ien stripping.

Kajoor eo mokta im ien kōmman nuknuk

Iien jolok ej lor joñan an kajoor, ekkã an 50% ñan 70% in karōk eo. Steel fiber ejjab kōmman an kajoor in mōkaj, eo ej cement im curing, ak ej kōmman an kajoor in mōkaj, eo ej joñan an maroñ in jab rup ak rup ilo ien eo ej mōjno. Ilo jerbal, juon men eo ewōr 30 ñan 40 kg/m3 in fiber ie emaron in jolok emen ñan jiljino awa mokta jen ejja curing eo wot, ak emaron in jolok ilo ejja raan eo wot ilo juon joñan jorrāān eo ediklok. Ñan wall ko redik oktak eo ej laplok wōt.

Jikin ko rej bōk jikin: Fiber ejjab bōk jikin jikin ko rej bōk jikin

Juon lemnok ebōd ej bwe steel fiber ej jolok aikuj in lifting loop ko. Lifting ej kōjerbal juon kajoor eo elap, im concrete eo iturin jikin eo ej bed ilo local bearing im punching shear. Fiber ej kōkōmanmanlok joñan an bin ak ejjab maroñ in bōk jikin cast-in loop ko ak lifting hole ko. Kōjparok jikin ko rej bōk jikin, im kōmman bwe en ļap fiber ak kobaik mesh iturin. Juon men ej oktak: lifting stress field eo ilo fiber concrete ej āinwōt juon wōt, kōn menin point ko remaron̄ jijet jidik ettoļo̧k jān ilo plain concrete, bōtaab ālkin wōt juon lale, jab kōn mejān.

Wall ko redik: 0.12-0.3 mm wōt Micro Wire ej kōmman melele

Iumin 60 mm depakpakin wall eo, steel fiber eo ekkā an jab jejjet. Juon 50 mm fiber ilo juon 40 mm wall ej jepooļe aolepān mōttan eo, ejjab kōmman juon network in three-dimensional, im ej bōk jikin ilo ien vibration. Ijin ej ijo stainless micro wire ej jerbal ie: 0.12 ñan 0.3 mm depakpak, 6 ñan 20 mm depakpak, 2000 ñan 2850 MPa kajoor in dāpij. Micro wire ej ejaak juon network eo elap ilowaan juon mõttan edik, im kalaplok joñan an maroñ in rup ilo an jab kakkure joñan an jimwe. Menin kōmman ko, sunshade ko im UHPC panel ko redik rej bed ijin.

Glued Bundles: Ia eo 40% Dispersion Gain ej itok jen e

Fiber ko rebin rej deloñ ilo mixer eo ilo mōttan ko im ej pedped wōt ioon mixer eo ñan kōjepel er; men eo ejjab jebel ej erom juon bōl. Fiber eo emōj an glue ej kobalok ilo juon laajrak ilo joñan an depakpak kin juon adhesive eo emaron rup ilo den. Row eo ej mōñā einwot juon unit, glue eo ej rup ilowaan 30 ñan 60 sekoņ, im kajjojo fiber ej jebel jen don. Unin joñan eo ej joñan ej 40% emmanlok jen loose fiber im joñan an balling ej dikļo k. Ej diiklok wōnan juon tonne, ak ion wall ko redik, elap joñan im concrete eo ebin, wōnan eo ej lukkun diiklok jen wōnan juon panel eo ejjab emman.

UHPC im RPC: Etke ruo kain fiber rej koba ippān doon

Ultra-high performance matrices rej lukkun ļap, ippāñ aggregate eo jejjo wōt millimeters im elap an dik porosity. Ilo matrix eo steel fiber ej kōmman post-crack bridging, ilo ien eo plastic shrinkage cracking ej walok mokta im ej aikuj juon fiber eo emmanlok. UHPC kin menin ekkā an kobaik steel im synthetic fiber: steel ilo 1% ñan 3% ilo joñan ñan bōk eddo, synthetic ilo 1% ñan 3% ñan bōbrae an mōkaj an rup im ñan kōmman bwe en diiklok an jorrāān ilo joñan bwil im molo. Synthetic fiber ewōr juon an density in 1.41 g/cm3, ejjab kobaik joñan eddo ñan element eo, im ilo 99% alkali resistance ej bed wot ilo juon alkaline cementitious matrix.

Mould ko, Release Agents im Steam Curing: Jilu Hidden Losses ilo Precast

Mour in mold eo ilo steel fiber precast ej jiljinoñoul ñan lemñoul bōjāān ediklok jen ion plain concrete, kin juon un eo epidodo: fiber ko rej rup wall in mold eo ilo ien vibration im demoulding, im hooked wire ej jerbal einwot barb ko redik. Jilu joñan ko rej bōk jikin jorrāān eo. Mokta, jab jolok joñan wot, 1 ilo 20 ñan mõttan ko reutiej im 1 ilo 15 ñan wall ko redik. Kein karuo, kãlet juon men in kōtlok pija jen juon oil, kinke juon pija ej kejbãrok juon menin kalibubu ikõtan wall im paste ilo ien eo oil ej jolok jen ijo juon fiber ej dāpij e. Kein kajilu, oktak ñan high frequency low amplitude vibration im kejbãrok poker eo jen 50 mm jen mold eo bwe fiber ko ren jab bed ie. Glued fiber bundle ko rej kobaiktok juon tokjen ejejjet ijin: joñan ilo bundle ko ej bōbrae an rup ilo ien eo rej likiti, ej kōkōmanmanlok distribution uniformity kin 40 percent, im jolok joñan an lap an mould eo. Steam curing ej aikuj joñan bwil im molo, jab mōkaj jen 20 degrees Celsius ilo juon awa ilo ramp eo, juon hold iumin 60 degrees Celsius, im juon joñan eo ediklok an diklok. Overshoot im red section ko rej kōmman mōttan ko redik rej bed ilo jemlokin fiber ko, eo ej bōk juon kilaaj in impermeability. Demoulding emaron in bōktok maan, ak lifting ejjab: fiber ej kōkōmanmanlok wāween an maroñ in mōkaj im pen, jab kajoor in mōkaj, innem lifting loop ko im lifting point ko rej bed wōt. Ñan juon ri lelok steel fiber, kajitok eo emman ejjab joñan wōnan juon tonne ak ien eo renaj kōmmane ilo jeje ñan joñan depakpak in mōttan eo am, kinke oran in ej kōmman oran mold eo im kin menin aolep karōk in kōmmane.

Laajrak in wia ko an Precast Plant eo

wiaik precast ej laplok an alikar jen wiaik jikin: joñan depakpak in worwor eo im joñan an dik joñan an alikar, ien eo ej aikuj in kōmmane, elañe mejān ej fair-faced, elañe steam curing ej kōjerbale, im elañe EN 14889-1 ej aikuj ñan export. Steam curing ej men eo ekkā an jako: ilōñ in 60 C ej jelet joñan an kajoor juon copper coating, im stainless fiber ej aikuj in bōk moktata. Ñan keidi grade ko im joñan eo ekkar ñan kain element, precast section eo ilo peij in steel fiber product ej kwalok kin men ko rejejjet, ekoba diameter im length range ko ñan glued grade ko im stainless micro wire.