June 15, 2015
Afifide a wɔayɛ no dedaw mpɛ ahoɔden a ɛkorɔn sen biara, ɛpɛ sɛ eyi nkuku no fi hɔ nnɛ. Anohyeto abiɛsa, demoulding bere, lifting points ne ɔfasu thickness, na esi fiber no ho gyinae.
Mmeae a wɔde nneɛma gu mu no dwen ahoɔden a etwa to ho; afifide a wɔadi kan ayɛ no dwen nsakrae ho. Strip biako da biara bere a wɔde toto biako nna abien biara ho no ma tumi a wɔde yɛ adwuma no mmɔho abien na ɛsakra sɛnea wɔtwetwe afifide bo a ɛkɔ fam ne adwumayɛfo no. Enti atirimpɔw a edi kan a dade nhama wɔ precast mu taa yɛ ntɛm a ɛko tia mpaapaemu mmom sen sɛ ɛbɛyɛ nea etwa to, enti wobetumi ama element bi so, adan no na wɔayi afi hɔ bere a kɔnkrit no da so ara yɛ ketewa a wɔrensɛe wɔ ntwea so. Ɛno nso kyerɛkyerɛ nea enti a afifide a wɔadi kan ayɛ no te nka kɛse wɔ nea ɛbɛpete ho sen sɛnea ɛbɛtwetwe ahoɔden no mu: fiber bɔɔl biako betumi ayi ntwea so afi element bi so bere a wɔreyi afi mu no.
Stripping bere di ahoɔden a edi kan akyi, mpɛn pii no 50% kosi 70% wɔ adwini no mu. Dade nhama mma ahoɔden a wɔde mia ntɛm, a ɛyɛ semɛnte ne aduruyɛ nkɔ soro, nanso ɛma ahoɔden a ɛtwetwe ntɛm kɔ soro, a ɛyɛ abodwokyɛre a ɛma wotumi mpaapae anaasɛ ɛntetew bere a wɔayiyi no. Wɔ nneyɛe mu no, wobetumi ayi element a ɛwɔ nhama a emu duru yɛ kilogram 30 kosi 40/m3 nnɔnhwerew anan kosi awotwe ansa na wɔreyɛ no wɔ ayaresa koro no ara ase, anaasɛ wobetumi ayi afi hɔ da koro no ara a ntwea so sɛe a ɛba fam koraa. Wɔ afasu a ɛyɛ tratraa fam no, nsonsonoe no sõ sen saa da so ara.
Adwene a ɛnteɛ a asiane wom ne sɛ dade nhama yi hia a ehia sɛ wɔma nhama so no fi hɔ. Sɛ wɔma so no de tumi a ɛyɛ den di dwuma, na kɔnkrit a atwa beae no ho ahyia no wɔ local bearing ne punching shear mu. Fiber ma punching toughness tu mpɔn nanso entumi nsi cast-in loops anaa lifting ntokuru ananmu. Fa mmeae a wɔma so no sie, na fa fiber no densify wɔ mpɔtam hɔ anaasɛ fa mesh ka ho twa ho hyia. Ade biako sesa ampa: nhyɛso a ɛma nneɛma so wɔ fiber kɔnkrit mu no yɛ pɛ, enti nsɛntitiriw betumi atra akyirikyiri kakra sen kɔnkrit a ɛnyɛ den mu, nanso bere a wɔahwɛ mu akyi nkutoo, na ɛnyɛ aniwa so da.
Wɔ ɔfasu no mu duru bɛyɛ mm 60 ase no, dade nhama a ɛyɛ mmerɛw no ntumi nkɔ mu kɛkɛ. Nhama a ne kɛse yɛ mm 50 a ɛwɔ ɔfasu a ne kɛse yɛ mm 40 mu no trɛw ɔfã no nyinaa mu, ɛnyɛ nhama a ɛwɔ afã abiɛsa biara, na wɔpia no kɔ soro bere a ɛrewosow no. Eyi ne baabi a stainless micro wire di dwuma: 0.12 kosi 0.3 mm diameter, 6 kosi 20 mm tenten, 2000 kosi 2850 MPa tensile ahoɔden. Micro waya yɛ dense network wɔ ɔfã a ɛyɛ tratraa mu, ma mpaapaemu resistance kɔ soro a ɛnyɛ yaw forming pɛpɛɛpɛ. Nneɛma a wɔde siesie fie, owia akataso ne UHPC panels a ɛyɛ tratraa nyinaa yɛ ha dea.
Fiber a ɛho ayɛ hare no hyɛn mixer no mu akuwakuw na egyina mixer no so sɛ ɔbɛtetew mu; nea ɛntetew mu no bɛyɛ bɔɔl. Wɔde ade a wɔde ntama a wɔde gluu ahyɛ mu no kyekyere nhama a wɔde gluu ayɛ no toatoa so wɔ ne tenten mu. Wɔde aduan ma row no sɛ ade biako, gluu no tew wɔ sikɔne 30 kosi 60 mu, na nhama biara tetew mu mmiako mmiako. Nsɛsoɔ a wɔsusu no boro 40% yie sene loose fiber na balling rate no kɔ fam kɛseɛ. Ɛbɔ ka kakra wɔ tɔn biara mu, nanso wɔ afasu a ɛyɛ tratraa so no, dodow a ɛkɔ soro ne kɔnkrit a n’anim yɛ fɛ so no, saa premium no sua koraa sen panel biako a wɔapow no bo.
Ultra-high performance matrices yɛ den yiye, a aggregate yɛ milimita kakraa bi pɛ na porosity a ɛba fam koraa. Wɔ saa matrix no mu no dade nhama ma mpaapaemu akyi bridge, bere a plastic shrinkage mpaapaemu ba ntɛm na ehia nhama a ɛyɛ fɛ. Enti UHPC taa fra dadeɛ ne nhama a wɔde yɛ nneɛma: dadeɛ a ɛyɛ 1% kɔsi 3% wɔ ne kɛseɛ mu de soa adesoa, wɔde yɛ 1% kɔsi 3% ma shrinkage control ntɛm na ɛtew explosive spalling so wɔ ɔhyew a ɛkorɔn mu. Synthetic fiber wɔ density a ɛyɛ 1.41 g/cm3 pɛ, ɛmfa emu duru biara nka element no ho, na wɔ 99% mu no alkali resistance no tra hɔ pintinn wɔ alkaline cementitious matrix a ɛyɛ den mu.
Nkuku a ɛwɔ dade nhama a wɔadi kan ayɛ so no nkwa nna yɛ tiaa ɔha biara mu aduasa kosi aduonum sen kɔnkrit a ɛnyɛ den so, esiane ntease tiawa bi nti: nhama twitwiw nkuku no fasu no mu bere a ɛrewosow na ɛreyɛ nsu no, na waya a wɔde hama abɔ no yɛ adwuma te sɛ nsɔe nketenkete. Nsusuwii abiɛsa na ɛwɔ nea ɛho asɛe no. Nea edi kan no, nsɛe sika wɔ nsu a ɛtɔ gu fam ho, anyɛ yiye koraa no, 20 biara mu 1 wɔ afã horow a emu dɔ ne 15 biara mu 1 wɔ afasu a ɛyɛ tratraa ho. Nea ɛto so abien no, paw ade a ɛma sini a wɔde yi sini mu sen sɛ wobɛpaw ngo, efisɛ sini ma akwanside a ɛkɔ so wɔ ɔfasu ne aduru a wɔde ahyɛ mu ntam bere a wɔpopa ngo no kɔ baabi a nhama bi mia so pɛpɛɛpɛ no. Nea ɛto so abiɛsa no, dan kɔ high frequency low amplitude vibration so na ma anyɛ yiye koraa no poker no nkɔ mm 50 fi nkuku no anim sɛnea ɛbɛyɛ a nhama no renkɔ hɔ. Glued fiber bundles de mfaso pɔtee bi ka ho wɔ ha: dosing wɔ bundles mu siw tangling ano wɔ placing stage, ɛma kyekyɛ yɛ pɛ bɛyɛ ɔha biara mu nkyem 40, na eyi mpɔtam hɔ overload a ɛwɔ mould no so no fi hɔ. Nsuonwini a wɔde sa yare no hia sɛ wɔde ɔhyew nteɛso ma, ɛnsɛ sɛ ɛyɛ ntɛm nsen digrii Celsius 20 dɔnhwerew biara wɔ ɔkwan a ɛkɔ ɔkwan a ɛkɔ ɔdan no so no so, wɔde kura digrii Celsius 60 ase, na ɛkɔ fam brɛoo saa ara. Afã horow a ɛboro so ne nea ɛyɛ tratraa no nya mpaapaemu fɛfɛ a ɛwɔ soro a ɛwɔ nhama ano pɛpɛɛpɛ, na ɛma ɛbɔ ka wɔ ɔkwan biako a ɛmma nsu ntumi nkɔ mu no ho. Wobetumi de demoulding aba anim, nanso lifting ntumi: fiber ma flexural suban ne toughness tu mpɔn, ɛnyɛ ntɛm compressive ahoɔden, enti lifting loops ne lifting points nyinaa tra hɔ. Wɔ precast concrete steel fiber supplier, asɛmmisa a mfaso wɔ so no nyɛ bo a wɔbɔ wɔ ton biara ho na mmom demolding bere a wɔde bɛhyɛ bɔ wɔ nkyerɛwee mu ama wo ɔfã no mu duru, efisɛ saa dodow no na ɛde nkuku dodow no si hɔ na ɛno nti nhyehyɛe a wɔde yɛ adwuma no nyinaa.
Adetɔ a wɔadi kan atɔ no yɛ nea ɛkɔ akyiri sen beae a wɔtɔ: ɔfasu no mu duru ne ntam kwan a ɛda hɔ a ɛba fam koraa, bere a wɔhwehwɛ sɛ wɔde yiyi nneɛma, sɛ ebia anim no yɛ fɛ, sɛ ebia wɔde nsuonwini a wɔde sa yare di dwuma, ne sɛ ebia EN 14889-1 ho hia na wɔde akɔ amannɔne. Steam curing ne ade a wɔtaa hwere: ɛboro 60 C so no, kɔbere a wɔde kata so no gyina pintinn, na ɛsɛ sɛ stainless fiber di kan. Sɛnea ɛbɛyɛ a ɛne grade ne dodow a wɔkamfo kyerɛ sɛnea element ahorow hyia no, precast ɔfã a ɛwɔ steel fiber product kratafa no mu no kyerɛw nsɛm a ɛfa ho, a nea ɛka ho ne diameter ne tenten a ɛwɔ glued grades ne stainless micro wire.
Ka wo project scenario ne ahwehwɛdeɛ kyerɛ yɛn, na yɛbɛma ano aduru a ɛfata no ahyia na yɛde quote ama wɔ nnɔnhwereɛ 24 ntam.
Nya Quote a Wɔde Ma KwaKɔbere-plated microwire, awɔw twetwe hook awiei type, glued wɔ row, fam type, 304 / 310S / 446 stainless dade ne melt-twe ɔhyew-resistant fiber, UHPC soronko synthetic fiber, diameter 0.2 kosi 1.0 mm, tenten 6 kosi 60 mm, tensile ahoɔden 700 kosi 2850 MPa, emu nsɛm coverage 0.5% kɔsi 2% volume rate ne 30 kɔsi 268 kg/m3. Wobetumi ayɛ nhyehyɛe a wɔbɛyɛ no sɛnea ASTM A820 anaa EN 14889-1 kyerɛ na wobetumi de batch inspection amanneɛbɔ ama. Wɔboa nneɛma a wɔde kyekyere nneɛma ahorow abiɛsa: nnaka, ton bag ne bulk. Aguadi ho nsɛm yɛ nea wobetumi apaw EXW / FOB / CIF / DDP.
Sua dade nhama a wɔpaw ne nsɛm a wɔafa aka ho ade →