Kev tsim kho ntawm cov nyom dag tsis muaj qhov xav tau siab rau lub hauv paus, uas tuaj yeem ua cov cement hauv av, asphalt av, tawv xuab zeb hauv av, lossis qib cement ruaj khov.
Artificial nyom foundation classification:
1. Asphalt qhob foundation:
1. Ordinary asphalt (feem ntau xaiv asphalt foundation, tus nqi yog me ntsis pheej yig dua).
2. Hydrophobic asphalt (tus nqi siab dhau, kev tsim kho nyuaj, tsis tshua muaj siv); zoo zog thiab ductility, nws yog lub hauv paus zoo tagnrho, tshwj xeeb tshaj yog haum rau cov cheeb tsam uas muaj huab cua txias thiab qhov kub thiab txias sib txawv nyob rau sab qaum teb, tab sis tus nqi kuj yog siab heev.
2. Cement foundation: lub zog zoo, kev lag luam thiab siv tau, tsim nyog rau thaj chaw uas muaj qhov sib txawv me me, tab sis tsis zoo ductility.
3. Cement pob zeb hmoov lub hauv paus: lub sijhawm siv luv luv, tus nqi qis, kev ua haujlwm zoo, tab sis huab cua tsis zoo, yooj yim rau oxidize, ua rau lub hauv paus tsis sib xws.
4. Gravel hydrophobic foundation: Tus nqi qis tshaj plaws, thiab cov dej ntws tau zoo, tab sis qhov flatness tsis zoo thiab muaj ntau yam teeb meem.
Cov qauv yooj yim rau cov khoom siv turf football pitches
1. Cov tsos mob yooj yim: lub ntsej muag zoo ib yam thiab muaj zog yam tsis muaj qhov pom tseeb ntawm qhov siab (yog tias muaj cov cim ntawm qhov siab, nws yuav ua rau tsis sib xws thiab tsis sib xws), tiaj tus thiab tsis muaj kab nrib pleb, tsis muaj qhov rotten, xoob, wavy, pitted, du seams, Yuav tsum tsis muaj dej thaiv qhov tshwm sim;
2. Cov dej ntws yooj yim: Cov dej ntws feem ntau siv ob txoj hauv kev los ntawm txoj kab nqes dej thiab cov kav dej rov qab. Yog tias cov dej raug kuaj, tom qab 120 feeb ntawm cov dej los nag, nws raug tso cai kom muaj cov dej ntau ntxiv, tab sis cov tuab ntawm cov dej sib xyaw yuav tsum tsis pub tshaj 4 hli; qhov no yog raws li qhov yuav tsum tau ua. 3. Txoj kab nqes dej: Tom qab lub hauv paus tiav lawm, muab ib daim phiaj 10x10 meter rov ntsuas qhov siab, thiab xam qhov nqes dej ntws. Yog tias txoj kab nqes dej tsis ua raws li qhov yuav tsum tau ua, nws yuav ua tsis tiav.
4. Ceev: Lub dov ceev ntawm cov txheej ruaj khov yog ntau dua lossis sib npaug li 93 feem pua; yog tias tus nqi no tsis ncav cuag, nws yuav ua rau raug mob, uas yuav muaj qee yam cuam tshuam rau theem tom ntej. (Feem ntau, cov khoom siv turf football teb siv cov cement ua lub hauv paus)
5. Kev tsim nyog tus nqi: tus nqi dhau ntawm flatness, txoj kab nqes thiab qhov chaw siab yog tag nrho saum toj no 85 feem pua;
6. Thickness yuam kev: qhov tso cai sib txawv ntawm thickness yog ± 10 feem pua. Yog hais tias lub thickness sib txawv yog loj los yog me me, nws yuav ncaj qha cuam tshuam rau cov nyom pavement, thiab nws kuj yuav ua rau unevenness ntawm qhov chaw. Yog li tus nqi skewness tsis tuaj yeem tshaj ± 10 feem pua.
