Ñalnde 15 lewru juko hitaande 2015
Lekki precast yiɗaa semmbe ɓurɗo toowde, ina yiɗi ittude mooftirgel hannde. Caɗeele tati, waktu demoulding, toɓɓe ƴettugol e teddeendi mahol, pelliti fiɓnde.
Nokkuuji cast-in-place ina toppitii semmbe timmuɗo ; leɗɗe precast ina toppitii mbayliigu. Bannge gooto e ñalawma gooto e ñalɗi ɗiɗi kala ina sowoo mbaawka, ina wayla no ustaare leɗɗe e golle njiytirtee. Faandaare adannde fiɓnde njamndi e nder precast ko ɗum waɗi ko heewi ko adii nde ɓuuɓnata ko ɓuri mbaawka timmunde, ko ɗuum waɗi elemen ina waawi ƴeftude, wirneede e ɓuuɓneede tawa beton oo ina famɗi haa jooni tawa spalling e ŋoral. Ko ɗum kadi firti ko waɗi leɗɗe precast ɓuri waawde diƴƴude ko ɓuri semmbe ɓuuɓɗo : ballal fiɓnde wootere ina waawi ittude ŋoral e huunde e sahaa ɓuuɓgol.
Waktuuji ɓuuɓɗi ina njokki e doole gadane, ko heewi ko 50% haa 70% e diisnondiral. Fibre aaludere umminataa semmbe ɓuuɓɗo ko yaawi, woni semmbe e ɓuuɓri, kono ina ɓeyda semmbe ɓuuɓɗo ko yaawi, woni muñal ngam waasde ɓuuɓde walla ɓuuɓde e ɓuuɓde. E nder golle, elemen mo 30 haa 40 kg/m3 fiɓnde ina waawi ustaade waktuuji nay haa jeetati ko adii ɗuum e les ɓuuɓri ngootiri, walla ina waawi ustaade e ñalawma gooto tawa bonnugol ŋorol ngol ina famɗi no feewi. Ngam maadi ɓuuɓndi, ceerungal ngal ɓuri mawnude haa jooni.
Miijo bonngo bonngo ko wonde fiɓnde njamndi ina itta haaju loope ƴeftugol. Lifting ina huutoroo doole kuuɓtodinɗe, e beton gonɗo e sara toɓɓere ndee ko e nokkuuji bearing e punching shear. Fiber ina moƴƴina tiiɗnaare punndi kono waawaa lomtaade loope cast-in walla ɓulli ƴeftugol. Waɗde nokkuuji ƴeftirɗi ɗii, e nokkuuji densify fibre walla ɓeydude mesh e saraaji mum en. Detaay gooto ina wayloo : fannu teskuyaaji ƴeftugol e nder beton fiɓnde ɓuri yuɓɓude, ko ɗum waɗi toɓɓe ina mbaawi jooɗaade seeɗa ko ɓuri beton laaɓtuɗo, kono tan caggal ƴeewndo, hay dara e gite.
Les ko ina wona 60 mm teddeendi mahol, fiɓnde njamndi ordinateer tan fotaani. Fiɓnde 50 mm e nder ŋoral 40 mm ina taarii taƴre ndee fof, alaa ko waɗata resooji tati, ina heɓa ɓuuɓde e dow leydi e nder diƴƴe. Ko ɗoon mikroo-wire inox huutortee : 0,12 haa 0,3 mm njaajeendi, 6 haa 20 mm njuuteendi, 2000 haa 2850 MPa semmbe ɓuuɓɗo. Micro wire ina waɗa lowre denndaande e nder taƴre ɓuuɓnde, ina ɓeyda doolnude crack tawa ina bonna waɗde laaɓal. Geɗe pawɗe, naange e panneeji UHPC ɓutti ɗii fof njeyaa ko ɗoo.
Fiɓnde loownde ina naata e nder ɓuuɓri, fawii ko e ɓuuɓri ngam seerndude ɗe ; ko seerndaani wonta bal. Fibre glued ina jokkondiri e rowre e njuuteendi mum e jokkere ndiyam. Rogere ndee ina ñamlee no yuɓɓo nii, koolaaɗo oo ina ɓuuɓtoo e nder leƴƴanɗe 30 haa 60, fiɓnde kala ina seernda heen gooto. Fotde uniformité ko ɓuri 40% ɓuri fibre loose e balling rate ina ustoo no feewi. Ina ɓeydoo seeɗa e tonngoode kala, kono e dow maale ɓutte, doseeji toowɗi e beton mo yeeso mum laaɓtungo, oon premium ina woɗɗi les njoɓdi panne gooto jaɓaaka.
Matiriiji baawɗi golle toowɗe ina keewi no feewi, ina njogii aggregate milimeeteeruuji seeɗa tan, ina pamɗi no feewi. E nder ndeen matriks fiɓnde njamndi ina rokka ɓuuɓri caggal ɓuuɓri, tawi ɓuuɓri ɓuuɓri palastik ina waɗa ko adii, ina haani fiɓnde ɓurnde laaɓtude. Ko ɗum waɗi UHPC ina heewi hawrude e aaludere e fiɓnde sintetik : aaludere e 1% haa 3% e njuuteendi ngam nawde teddeendi, sintetik e 1% haa 3% ngam haɓaade ɓuuɓri ko yaawi e ngam ustude ɓuuɓri puccitndi e nguleeki toowki. Fiber sintetik ina jogii teddeendi 1,41 g/cm3 tan, alaa ko ɓeydata e elemen oo teddeendi, e nder 99% e reentaade alkali ina heddii e nder mbaydi semmbe alkali tiiɗndi.
Nguurndam mooftirgel e dow fiɓnde njamndi precast ina doga capanɗe tati haa capanɗe joyi e nder teemedere ko ɓuri juutde e dow beton laaɓɗo, sabu daliilu laaɓɗo : fiɓnde ina ɓuuɓna wall mooftirgel e nder diƴƴe e demoulding, e hooked wire ina waɗa no barbs tokoosi. Peeje tati ina njogii ɓoornagol ngol. Ko adii fof, woto njuumtu e mbaydi, ko famɗi fof 1 e nder 20 wonande taƴe luggiɗe e 1 e nder 15 wonande mahe ɓutte. Ɗiɗaɓere, suɓo-ɗaa ko ɓuuɓnoowo filmo, wonaa nebam, sibu filmo ina jogii jokkere enɗam hakkunde mahol e paaspoor tawa nebam ina ɓuuɓtoo ɗo fiɓnde ɓuuɓnata ɗum ɗoo tigi. Tataɓol, waylude e diƴƴe toowɗe lowre amplitude e jogaade poker ko famɗi fof 50 mm e yeeso mooftirgel mbele fiɓnde ndee ina ɓuuɓtoo toon. Bunɗe fibre glued ina ɓeyda ɗoo nafoore keeriinde : doseeji e nder bunduuji ina haɗa tangling e daawal jokkondire, ina moƴƴina uniformité renndinde ko ina tolnoo e 40 e nder teemedere, e ittude nokku ɓurɗo heewde e dow mooftirgel. Cuurgol aaludere ina haani diisnondiral nguleeki, tawa ko ɓuri yaawde e 20 degere Celsius e waktu gooto e dow rampa, jogaade les 60 degere Celsius, e ustaare seeɗa seeɗa. Taƴe ɓurɗe toowde e ɓutte ina ƴellitoo ɓuuɓri laaɓtundi tawaandi tigi rigi e jookli fiɓnde, ko ɗum yoɓata kalaas gooto impermeability. Demoulding ina waawi addude yeeso, kono ƴeftude waawaa : fiɓnde ina moƴƴina jikkuuji flexural e tiiɗnaare, wonaa semmbe ɓuuɓɗo arano, ko ɗuum waɗi loope ƴeftude e toɓɓe ƴeftude fof ina keddii. Wonande balloowo fibre steel beton precast, naamnal nafoore wonaa coggu tonngoode kala kono ko waktu demoulding mo ɓe ndarni e binndol ngam teddeendi taƴre maa, sabu ndeen limoore ina setta limoore mooftirgel e ɗuum waɗi peeje peewnugol ɗee kala.
Sodeede precast ɓuri laaɓtude e soodeede nokku : teddeendi mahol e njuuteendi laaɓtundi ɓurndi famɗude, waktuuji stripping potɗi, so tawii yeeso ngoo ina laaɓti, so tawii steam curing ina huutoree, e so tawii EN 14889-1 ina haani ngam yaltinde. Ko ɓuuɓri ɓuuɓri woni huunde ɓurnde heewde waasde : dow 60 C darnde ɓuuɓri njamndi ina metti, fibre inox ina foti ardineede. Ngam hawrude e tolnooji e doseeji wasiyaaji e sifaa elemen, taƴre precast hello peewnugol fibre steel ina limta sifaaji jowitiiɗi heen, ina heen diameter e njuuteendi ranges ngam tolnooji glued e inox micro wire.
Haalan min senaare eɓɓoore maa e sarɗiiji, min mbaɗata heen feere moƴƴere e rokkude min limto e nder waktuuji 24.
Heɓde Quote mo alaa ko yoɓiMikro-wire njamndi mboɗeeri, mbaydi joofnirde hoodere ɓuuɓnde, ɓuuɓnde e rowre, mbaydi leydi, 304 / 310S / 446 njamndi mboɗeeri e fiɓnde ɓuuɓnde ɓuuɓnde, fibre sintetik keeriiɗo UHPC, njaajeendi 0,2 haa 1,0 mm to 600, njuuteendi 6 haa 60 mm200 MPa, njuuteendi 0,5% haa 2% e tolno nguleeki e 30 haa 268 kg/m3. Pewnugol ina waawi yuɓɓineede e fawaade e ASTM A820 walla EN 14889-1 e ciimtol ƴeewndo batte ina waawi rokkireede. Nokkuuji tati paaspoor ina mballita : karton, saakuuji ton e bulk. Sarɗiiji njulaagu ko cuɓaaɗi EXW / FOB / CIF / DDP.
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