Jun 15, 2020
Fopela samting ol i mas mekim long de bilong givim samting i stopim planti hevi i save kamap bihain. Nogat wanpela bilong ol i save kisim moa long wanpela aua, na olgeta i mas kamap pastaim long ol i sainim pepa bilong salim samting.
Pastaim long sainim wanpela 'steel fiber delivery', mekim 4-pela samting: bungim namba bilong lot wantaim ripot bilong salim, opim tripela beg na lukluk long ol 'balling' na 'rust', skelim hevi bilong en long konfemim net weit, na pasim wanpela 'retention sample'. Tugeta ol i save kisim aninit long wanpela aua na stopim planti hevi bilong kwaliti we i save kamap bihain. Step we planti taim ol i save lusim em 'retention sample': taim strong i sot o bruk i kamap, sapos i no gat wanpela 'sample' bilong 'delivery' i no gat rot long soim sapos 'material' o 'placing' i bin rong. Silim em long namba bilong lot wantaim deit, lot na saplaia i makim, na holim i stap inap long taim ol i orait long en.
Balling em i wanpela samting we yumi ken lukim long 'steel fiber'. Kisim wanpela hanful long wanpela beg, putim long wanpela ples we i stret na lukluk: 'sound product' em ol 'fibers' we i no pas gut. Bihain rapim namel long tupela han; sapos em i bruk isi ol i bin pasim tasol taim em i ron, sapos em i nidim strong ol i save gluim o 'cake'. Lait kompaksen em i no wanpela hevi, tasol wanpela blok we i no inap bruk long han bai i stap yet olsem wanpela bal bihain long yu miksim. Lukluk tu long ol 'fluffy clusters' we ol huk i pas wantaim, we i hat long opim taim yu miksim drai.
Sapos yu kamap long ples we i no gat lait liklik, dispela i no inap kamapim hevi, tasol ol retpela braunpela mak bilong ros i mas kisim luksave. Ol 'copper-plated fiber' i save luk olsem bras, ol 'zinc-coated' i luk olsem silva-wait, na tupela i no ken soim bikpela hap bilong retpela ros taim ol i givim. Ol liklik wara we i kam long trenspot i ken drai long wanpela hap we i gat win na i no inap bagarapim, tasol planti hap we i gat 'pitting rust' i mas kisim 'sample' bilong spreim sol o rausim, long wanem, wanpela 'pit' i save kamap olsem as bilong 'corrosion' bihain.
Praktikel fil sekim bilong kisim marasin em wasim na skelim. Kisim wanpela volium bilong simen we yu miksim pinis, wasim 'paste' na 'aggregate' (ol gutpela lip bilong 'aggregate' wantaim wara, ol 'fiber' i stap yet), draim na skelim hevi bilong 'fiber', na brukim long 'sample volume' bilong kisim stretpela mak bilong en. Stretpela bilong en i liklik, tasol em i save kisim ol bikpela asua olsem wanpela hap bilong 'fiber' i no stap. Narapela rot em long 'batching record': 'weighing system' bilong plent i save raitim olgeta 'batch', na sekim hevi bilong ol 'fiber' long wan wan 'batch' em i hariap moa long 'site sampling'.
'Flexural toughness' em i nambawan samting bilong 'steel fiber concrete', na tupela standet i stap: EN 14651 long Yurop na ASTM C1609 long Not Amerika. EN 14651 i yusim wanpela 'notched beam' long tripela-poin bending, rekodim lod egensim 'crack mouth opening displacement', na ripotim 'residual strength' long ol 'displacement' we i stap. ASTM C1609 i yusim wanpela 'unnotched beam' long 'four-point bending' na i ripotim wankain 'flexural strength' na 'residual strength'. Ol veliu i no inap senis, olsem na kontrak i mas kolim nem bilong standet. Taim yu tromoi ol 'beam specimen' long ples, luksave long 'fiber orientation': ol i tromoi ol 'specimen' long narapela sait long straksa, we i senisim strong bilong en.
Strongpela pasin bilong kisim ol samting i dipen long ol as tingting. Noken putim ol hap we i gat ol 'fiber' antap long en, na bihain sekim pes we ol i katim: 'fiber' i mas stap wankain na i no gat ol hap we i no gat 'fiber' long en. Hevi 'fiber exposure' long 'core edge' i min olsem dispela hap i stap klostu tumas long 'formwork' o i bin guria tumas. Strong bilong 'core compressive' i no wankain olsem strong bilong 'structural'; em i soim 'local density' long dispela taim, na em i gutpela long ritim wantaim ol 'rebound' o 'ultrasonic' risalt.
Bikpela rong we planti manmeri i save mekim taim ol i kisim sait em long tingim olsem ol i bin verifai. Taim wanpela samting i rong, ol rait na poto tasol i save stap. Fopela eksen long de bilong kamap i no gat bikpela pe na i gutpela tru. Pastaim, kisim poto bilong sil na taim ol dua i op, we i soim olsem ol i no bin senisim kago taim ol i raun. Namba tu, kisim poto bilong 'inkjet batch code' long ol beg na sekim olgeta leta wantaim setifiket we i bin raun wantaim ol kago; sapos wanpela samting i no wankain bai i go insait long wanpela rekot we ol i raitim long dispela hap. Namba tri, opim tripela beg na pulim 500 g long wanwan beg i go insait long wanpela zip beg we i gat nem bilong 'batch', deit na 'sampler', holim wanpela i stap, salim wanpela i go bek long faktori na pasim wanpela olsem wanpela risev. Ol sempel we ol i holim i stap em ol evidens we i stap baksait long olgeta tok pait bihain, na sapos ol i no stap, ol i no inap givim wanpela tes risal. Namba foa, sekim hevi bilong en, skelim hevi bilong tripela beg na skelim gen olgeta samting sapos wanpela i senis moa long 2 pesen. Rekodim tripela namba: tru tru net weit yu kisim, sekim mak bilong marasin, na wankain strong bilong 'flexural' long 'toughness test'. Long sekim mak bilong marasin, tromoi wanpela 'specimen', wasim, separetim na skelim hevi bilong 'fiber' long rot bilong magnetik, na bihain skelim bek ol kilogram long wan wan kubik mita; dispela step i save kisim planti sotpela deliveri. Ol namba bilong ol 'specimen' i mas stap long map bilong ol ples bilong kapsaitim na ol kondisen bilong 'curing' i mas raitim daun, o 28-de risal i no min wanpela samting. Ol kleim i gat dedlaen, na planti kontrak i nidim rait toksave bilong kwaliti objeksen insait long 7-pela de bihain long ol i kamap; misim na maski gutpela evidens i kaunim olsem yu kisim. Rekot bilong kisim i no bilong inspekta, em i rot bilong yu yet long go bek. Tupela moa samting ol i save lusim oltaim. Kauntim ol 'lumps' taim yu opim wanpela beg: moa long tripela 'lumps' we i bikpela olsem pinga insait long wanpela beg i min olsem 'fiber' i kisim wara taim em i ron o taim em i stap long stoa, na dispela 'batch' i mas stap long kwarentin na noken givim long 'mixer'. Orait sekim net weit wantaim mak bilong sipmen, bikos tu pesen long wanpela twenti tan oda em i foapela handet kilogram, klostu long wanpela mun bilong yusim.
Sapos ol i no inap kisim, wanpela kleim i mas i gat wanpela ful sen: ol 'retention sample', ol namba bilong lot na ol ripot bilong salim, ol rekot bilong wasim na skelim, ol bikpela poto na ol ripot bilong tes, na ol rekot bilong putim we i karamapim taim bilong miksim, rot bilong givim kaikai na tempereja bilong kapsaitim. Brukim wanpela link na risponsibiliti bai kamap wanpela tok pait. Raitim 'batch report' wantaim 'shipment' na 'joint sealing' bilong ol 'site samples' insait long kontrak em i nambawan gutpela samting bilong lukautim yu. Long ol 'acceptance baselines' long gret, olgeta wan wan kategori long 'steel fiber product' pes i gat 'diameter', longpela, 'aspect ratio' na ol 'tensile values' we ol i skelim, we ol i ken prinim na yusim stret olsem 'site comparison sheet'.
Tokim mipela long projek senario na ol samting yu nidim, na mipela bai painim stretpela solusen na givim yu wanpela kwot insait long 24 aua.
Kisim wanpela fri kwotKopa-pleted maikrowaia, kol draun huk end taip, gluim long lain, graun taip, 304 / 310S / 446 steinles stiel na melt-draun het-resistant faiba, UHPC spesel sintetik faiba, diamita 0.2 i go long 1.0 mm, longpela 6 i go long 60 mm, strong bilong 700 70 MPa, konten kavrej 0.5% i go long 2% volium reit na 30 i go long 268 kg/m3. Prodaksen i ken kamap bihainim ASTM A820 o EN 14889-1 na ol i ken givim ol ripot bilong sekim ol samting. Tripela kain paket i stap: ol katon, ol ton beg na ol bikpela samting. Ol tok bilong tred em i opsenel EXW / FOB / CIF / DDP.
Lainim long makim na givim ol 'steel fiber' →