Kev Txheeb Xyuas Txog Basalt Fiber-Reinforced Plaster Mortar

1. Cov Yam Ntxwv Tseem Ceeb ntawm Basalt Fiber

Cov fiber basaltfeem ntau yog tsim los ntawm silicon oxide, txhuas oxide thiab hlau oxide, nrog rau cov silicon oxide thiab txhuas oxide ntau, muab nws cov txiaj ntsig zoo hauv kev tiv taus cua sov thiab Tshuaj lom neeg tsis kam xeb. Piv rau cov iav fiber, basalt fiber tsis muaj cov hlau oxides uas ua rau muaj kev ruaj khov tshuaj zoo dua thiab ua tau zoo heev hauv cov chaw muaj zog xws li cov alkalis muaj zog thiab cov kua qaub muaj zog.

Lub zog tensile ntawm basalt fiber feem ntau yog txij li 3000 txog 4800 MPa, thiab nws cov elastic modulus yog nyob rau hauv qhov ntau ntawm 80 txog 110 GPa. Qhov no ua rau nws muaj zog dua li iav fiber, nrog rau qhov qis dua elongation thaum tawg, uas ua rau zoo dua qhov tawg tsis kam ntawm cov ntaub ntawv cement.

Cov fiber basalt ua rau nws tiv taus kub heev, nrog rau qhov kub yaj tshaj 1400 ° C thiab kub ua haujlwm ntev txog li 700 ° C, ntau dua li cov iav fiber. Qhov no tso cai rau nws kom ruaj khov txawm tias nyob hauv qhov chaw kub siab.

Basalt fiber kuj muaj kev tiv thaiv alkali zoo dua, tiv thaiv acid, thiab tiv thaiv UV. Nws tuaj yeem ua haujlwm ntev hauv cov chaw ib puag ncig hnyav xws li av noo, tshuaj tsuag ntsev, thiab tshuaj xeb, ua rau nws tsim nyog rau cov ntaub ntawv engineering xws li cov txheej plaster phab ntsa sab nraud uas raug rau cov chaw ib puag ncig nyuaj rau lub sijhawm ntev.

2. Lub Tawg Tiv Thaiv Kev Tawg ntawm Cov Pob Zeb Uas Muaj Fiber Ntau

Qhov cuam tshuam ntawm cov fibers hauv mortar feem ntau nyob ntawm lawv qhov kev faib tawm, qhov ntev, cov ntsiab lus, thiab kev sib txuas nrog cov khoom siv cement. Thaum lub sijhawm ua kom tawv ntawm mortar, cov kab nrib pleb me me tuaj yeem tsim tau sab hauv vim muaj cov yam ntxwv xws li ntim shrinkage los ntawm cov tshuaj tiv thaiv hydration thiab kev ntxhov siab thermal los ntawm kev hloov pauv kub.

Cov fibers tuaj yeem txuas ob sab ntawm cov kab nrib pleb me me, muab cov txiaj ntsig txuas thaum cov kab nrib pleb pib tsim, ua rau qeeb qeeb kev nthuav dav ntawm cov kab nrib pleb thiab txhim kho cov khoom siv tag nrho lub zog tensile thiab kev tiv thaiv kab nrib pleb. Cov fiber basalt muaj ib qho chaw ntxhib, uas muab kev sib txuas lus zoo nrog cov cement paste. Thaum cov khoom sab nraud raug siv rau ntawm cov mortar, ib feem ntawm kev ntxhov siab tuaj yeem hloov pauv los ntawm cov fibers mus rau lub matrix ib puag ncig, yog li txo cov kev ntxhov siab hauv zos thiab tiv thaiv kev nthuav dav ntxiv. Lub tshuab kev ntxhov siab no pab txhim kho qhov kev tawv thiab kev cuam tshuam ntawm cov mortar.

Thaum lub sijhawm ua kom cov mortar hardening, cov fibers tuaj yeem tsim cov khoom faib tawm random Kev Txhawb Nqa Mesh cov qauv hauv lub matrix, txhim kho qhov tsis kam ntawm cov mortar. Thaum cov txheej plaster raug kev hloov pauv ntawm qhov kub thiab txias sab nraud, kev ntxhov siab ntawm kev ziab, lossis kev thauj khoom siv tshuab, cov ntaub thaiv reinforcing no tuaj yeem tiv taus kev hloov pauv hauv thaj chaw muaj kev ntxhov siab, ua rau muaj kev tiv thaiv kab nrib pleb ntau dua hauv cov khoom.