Qee qhov cuam tshuam ntawm Polypropylene Fiber Rau Pob Zeb Tom Qab Hardening
Jul 09, 2023| Cov teebmeem ntawm Polypropylene Fiber rau pob zeb tom qab Hardening
Qhov sib ntxiv ntawm polypropylene fiber ntau rau pob zeb tsis muaj kev cuam tshuam rau lub zog compressive thiab elastic modulus ntawm pob zeb, tab sis nws ua rau kom lub zog tensile ntawm pob zeb. Lub zog tensile ntawm ya tshauv pob zeb yog li 9 feem pua rau 13 feem pua ntawm nws lub zog compressive. Qhov sib ntxiv ntawm polypropylene fibers rau pob zeb yuav ua rau kom lub zog tensile zog ntawm 20 feem pua rau 50 feem pua.
1. Compressive zog:Lub zog compressive ntawm pob zeb yog qhov tseem ceeb heev vim nws txiav txim siab lwm yam tsis xws li tensile, dabtsi yog khoov, thiab lwm yam. Cov nyhuv ntawm polypropylene fibers ntawm lub compressive zog ntawm pob zeb tau tham nyob rau hauv ntau cov ntaub ntawv, thiab polypropylene fibers tau raug soj ntsuam kom txo los yog nce lub zog compressive ntawm pob zeb, tab sis nyob rau hauv ntau zaus, tag nrho cov nyhuv yog negligible. Qhov tseeb, cov nyhuv ntawm cov ntim me me polypropylene fibers ntawm lub zog compressive ntawm pob zeb yuav raug npog los ntawm kev sim ua yuam kev.
2. Khoov tensile zog:Raws li qhov ntim feem ntawm cov fiber ntau nce, qhov khoov tensile lub zog nce. Raws li qhov sib piv ntawm fiber ntau ntev-rau-inch nce, lub zog ntawm fiber ntau kuj nce.
3. Kev ua haujlwm tawg:Kev siv cov fibers zoo txhim kho kev ua haujlwm tsis ua haujlwm ntawm cov pob zeb muaj zog. Tej yam shear daim ntawv cog lus lov vim strain localization yuav zam tau. Hloov chaw, raws li pom nyob rau hauv daim duab 7, ib tug loj tus naj npawb ntawm longitudinal kab nrib pleb tsim nyob rau hauv lub pob zeb qauv, feem ntau yog nyob rau hauv cov kev taw qhia parallel mus los yog subparallel mus rau sab nraud compressive kev nyuaj siab.
4. Creep thiab shrinkage zog ntawm pob zeb:fibers txo creep strain, uas yog hais txog lub sij hawm sib txawv deformation ntawm pob zeb nyob rau hauv tas li kev nyuaj siab. Txawm li cas los xij, tus nqi compressive creep tsuas yog 10 feem pua rau 20 feem pua ntawm cov pob zeb zoo tib yam. Qhob shrinkage kuj raug txo los ntawm fibers vim yog rho tawm cov dej los ntawm cov pob zeb thaum lub sij hawm ziab. Lub shrinkage, creep thiab tag nrho lub sij hawm-varying deformation ntawm ntau yam PFRC sib tov nrog rau cov uas tsis yog-fiber pob zeb sib tov yog qhia. Los ntawm ntau qhov pom, shrinkage txo qis vim muaj cov fibers. Ua ntej ntawm tag nrho cov, cov fibers tsis qhia ib tug shrinkage, uas yuav txo tau lub zuag qhia tag nrho shrinkage ntawm sib tov. Tsis tas li ntawd, cov dej tuav cov nyhuv ntawm cov fiber ntau hauv qhov sib xyaw ua ke nce mus txog ib qho kev txwv, uas yuav pab kom qeeb shrinkage. Yog li, ntxiv fibers rau qhov sib xyaw ua ke yog qhov tsim nyog los txo qis deformation.