Cov Khoom Siv Kho Tshuab ntawm Basalt Fiber chopped strands Concrete

KHOOM QHIA TXOG

Cov pob zeb ua vaj tse, ua ib yam khoom siv hauv kev tsim kho vaj tse dav dav, muaj cov khoom siv kho tshuab zoo, tab sis nrog kev siv thev naus laus zis txuas ntxiv mus, qhov tsis zoo ntawm nws cov khoom siv kho tshuab yooj yim maj mam raug nthuav tawm. Vim yog lub zog tensile qis ntawm tsuas yog ib feem kaum ntawm lub zog compressive, ua rau cov tswv cuab ntawm cov txheej txheem tensile yooj yim tawg, uas ncaj qha txo qhov ruaj khov ntawm cov khoom, ua rau qhov kev siv ntawm Cov Khoom Siv Pob Zebs. Txhawm rau txhim kho cov yam ntxwv ntawm kev ua haujlwm engineering ntawm cov pob zeb ua vaj tse thiab daws cov teeb meem hauv kev siv cov pob zeb ua vaj tse, cov kws tshawb fawb tau txhim kho kev ua tau zoo ntawmcov ntaub ntawv ua vaj tse tau ntau xyoo thiab tau ua tiav cov txiaj ntsig theem ib theem zuj zus, xws li kev ntxiv cov tshuaj ntxiv, kho qhov sib xyaw ua ke, txhim kho cov txheej txheem tsim khoom thiab cov txheej txheem txij nkawm.

1. Cov ntaub ntawv xeem thiab cov txheej txheem xeem

P. O 42.5 cov cement silicate zoo tib yam tau xaiv, nrog 28d compressive zog ntawm 48.3MPa thiab 28d flexural zog ntawm 8.2MPa. xuab zeb nruab nrab nrog lub fineness modulus ntawm 2.5-2.6 tau siv ua cov pob zeb zoo, nrog qhov pom tseeb ntawm 1996kg / m3. cov pob zeb sib tsoo txuas ntxiv ntawm 5-27mm tau siv ua cov pob zeb loj, nrog qhov pom tseeb ntawm 2737kg / m3. Tus nqi txo dej ntawm 40% tau siv. 40% ntawm Sika polycarboxylic acid cov neeg sawv cev txo dej zoo heev tau siv. Qhov ntev ntawm Cov xov basalt fiber txiav yog li ntawm 30 hli, lub txoj kab uas hla ntawm lub monofilament yog li ntawm 15um, qhov ceev yog 2.7g / cm3, lub modulus ntawm elasticity yog 95-120MPa, lub zog tensile yog 3300-4500MPa, thiab qhov elongation thaum tawg yog li ntawm 2.5-30%.

Cov kev sib haum xeeb uas siv rau hauv qhov kev xeem no tau qhia nyob rau hauv Rooj 1. Qhov kev xeem compressive yog siv raws li Tus Txheej Txheem rau Kev Xeem ntawm Cov Khoom Siv Mechanical ntawm Ordinary Concrete. Qhov kev xeem compressive siv 100 × 100 × 100mm cubic specimens, 3 qauv hauv txhua pawg, tus qauv kho 28d.

2. Tyog cov kauj ruam

(1) Ua ntej, so daim ntawv sim uas yuav tsum tau sim tom qab kuaj xyuas qhov tsos thiab ntsuas qhov loj, kom raug. Qhov tsis sib xws ntawm qhov chaw ntawm tus qauv nce mus txog 100 hli, qhov yuam kev tsis pub tshaj 0.5 hli, thiab qhov tsis sib xws ntawm qhov chaw ntawm tus qauv thiab qhov tsis sib xws ntawm sab nraud yuav tsum tsis pub ntau tshaj qhov yuav tsum tau ua ntawm 1 degree;

(2) lub axis ntawm lub tshuab kuaj sim sib phim nrog lub hauv paus ntawm lub phaj siab hauv qab lub tshuab kuaj. Qhib lub tshuab kuaj, thaum lub phaj siab sab saud thiab daim ntawv kuaj kaw, kho qhov kev txhawb nqa, kom lub zog sib xws;

(3) cov txheej txheem thauj khoom kom tswj tau qhov txuas ntxiv thiab sib xws, qhov ceev thauj khoom sim siv sijhawm 12kN / s-18kN / s; (4) sau qhov siab tshaj plaws thauj khoom, raug rau 0.1MPa.

3. Cov txiaj ntsig ntawm kev xeem thiab kev tshuaj xyuas

Raws li pom tau los ntawm Rooj 2, lub zog compressive 7d ntawm cov pob zeb nrog rau kev nce ntawm Basalt Cov fibers nthuav tawm cov yam ntxwv ntawm tsis hloov pauv mus rau qhov maj mam txo qis, uas yog vim muaj kev ntxiv ntawm cov fibers basalt, hauv cov fibers thiab cement tsim ntawm qhov sib tshuam los tsim cov nplaim tsis muaj zog, thiab nrog kev nce ntawm cov fiber sib xyaw ntau npaum li cas, hom nplaim tsis muaj zog no txuas ntxiv mus ntxiv, yog li lub zog compressive cubic ntuj txuas ntxiv mus poob qis. Lub zog compressive 28d ntawm cov pob zeb nrog kev nce ntawm cov fiber basalt fiber ntau npaum li cas qhia txog qhov sib txawv ntawm thawj qhov nce thiab tom qab ntawd txo qis, qhov laj thawj rau qhov kev nce thawj zaug no yog me me ntawm dopedcov fiber basalt ua lub luag haujlwm hauv kev txuas mus rau qee qhov twg hauv kev txo qhov shrinkage deformation ntawm cov pob zeb nws tus kheej, thaum tib lub sijhawm nce qhov chaw tsis muaj zog piv rau 28d lub zog nce kom tsawg dua, uas nyob rau hauv tag nrho kev ua tau zoo ntawm lub zog nce.

4. Qhov Tshwm Sim

Los ntawm qhov kev xav ntawm lub zog cubic compressive, thaum cov khoom sib xyaw ua ke ntawm basalt fiber luv luv ncav cuag li 1-1.5% los ntawm feem pua ​​​​​​ntawm qhov ntim, 7d thiab 28 cubic compressive zog ntawm cov khoom luv luv basalt fiber cov pob zeb ua vaj tse tau nce ntxiv mus rau qee qhov piv rau cov pob zeb ua vaj tse uas tsis muaj fiber admixture.