{"id":8488,"date":"2022-06-16T19:59:33","date_gmt":"2022-06-16T17:59:33","guid":{"rendered":"https:\/\/svetkamene.eu\/?p=8488"},"modified":"2022-07-08T23:27:28","modified_gmt":"2022-07-08T21:27:28","slug":"prakticke-rady-pro-provadeni-laboratornich-zkousek-prirodniho-kamene","status":"publish","type":"post","link":"https:\/\/svetkamene.eu\/index.php\/cs\/2022\/06\/16\/prakticke-rady-pro-provadeni-laboratornich-zkousek-prirodniho-kamene\/","title":{"rendered":"PRAKTICK\u00c9 RADY PRO PROV\u00c1D\u011aN\u00cd LABORATORN\u00cdCH ZKOU\u0160EK P\u0158\u00cdRODN\u00cdHO KAMENE"},"content":{"rendered":"\r\n<p><strong>Normy popisuj\u00ed parametry, kter\u00e9 mus\u00ed v\u00fdrobek spl\u0148ovat. Jedn\u00e1 se o&nbsp;parametry kvality t\u00fdkaj\u00edc\u00ed se zpracov\u00e1n\u00ed v\u00fdrobku a&nbsp;parametry t\u00fdkaj\u00edc\u00ed se materi\u00e1lu, z&nbsp;n\u011bho\u017e je v\u00fdrobek vyroben. Kvalita zpracov\u00e1n\u00ed se t\u00fdk\u00e1 p\u0159esnosti rozm\u011br\u016f, rovnosti povrchu nebo tolerance nerovnost\u00ed.<\/strong><\/p>\r\n<p>&nbsp;<\/p>\r\n<p>Obvykle se vyhodnocuje pomoc\u00ed metrick\u00fdch p\u0159\u00edstroj\u016f (m\u011b\u0159idel a&nbsp;posuvn\u00fdch m\u011b\u0159\u00edtek). Na druh\u00e9 stran\u011b se kvalita materi\u00e1lu posuzuje na z\u00e1klad\u011b jeho fyzik\u00e1ln\u00edch a&nbsp;mechanick\u00fdch parametr\u016f, mezi n\u011b\u017e pat\u0159\u00ed pevnost v&nbsp;tlaku a&nbsp;ohybu, odolnost proti vytr\u017een\u00ed kotvy, proti od\u011bru, mrazu a&nbsp;dal\u0161\u00ed souvisej\u00edc\u00ed parametry, nap\u0159.&nbsp;p\u00f3rovitost, nas\u00e1kavost, kapil\u00e1rn\u00ed nas\u00e1kavost. Je obvykl\u00e9, \u017ee dodavatel suroviny (d\u016fl, dovozce) si p\u0159\u00edslu\u0161n\u00e9 zkou\u0161ky objedn\u00e1v\u00e1 na vlastn\u00ed n\u00e1klady.<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n<p>Kupuj\u00edc\u00ed by proto spolu s&nbsp;dodan\u00fdm kamenem m\u011bl obdr\u017eet sadu test\u016f v&nbsp;z\u00e1vislosti na tom, k&nbsp;jak\u00e9mu \u00fa\u010delu bude materi\u00e1l pou\u017eit. Ale jak u\u017e to v&nbsp;\u017eivot\u011b b\u00fdv\u00e1, v\u011bci se vyv\u00edjej\u00ed jinak, ne\u017e bychom \u010dekali. M\u016f\u017ee vyvstat nap\u0159.&nbsp;pot\u0159eba (nebo nutnost) prov\u00e9st na kameni nov\u00e9 testy. M\u016f\u017ee to b\u00fdt z&nbsp;mnoha r\u016fzn\u00fdch d\u016fvod\u016f. D\u016fvodem mohou b\u00fdt pochybnosti o&nbsp;kvalit\u011b zakoupen\u00e9ho materi\u00e1lu. M\u016f\u017ee doj\u00edt ke sporu s&nbsp;dodavatelem &#8211; sporu na r\u016fzn\u00fdch \u00farovn\u00edch, v\u010detn\u011b soudn\u00edho sporu. M\u016f\u017ee doj\u00edt k&nbsp;nehod\u011b, po\u0161kozen\u00ed zdrav\u00ed nebo \u017eivota zam\u011bstnance \u010di&nbsp;z\u00e1kazn\u00edka.<\/p>\r\n\r\n\r\n\r\n<p>Podle informac\u00ed z\u00edskan\u00fdch z&nbsp;internetu je mo\u017en\u00e9 si zkou\u0161ky kamene objednat u&nbsp;mnoha v\u011bdeck\u00fdch pracovi\u0161\u0165 a&nbsp;laborato\u0159\u00ed po&nbsp;cel\u00e9m Polsku. V\u00fd\u010det instituc\u00ed, kter\u00e9 n\u00e1m potvrdily rozsah prov\u00e1d\u011bn\u00fdch zkou\u0161ek kamene, naleznete na p\u0159edchoz\u00ed stran\u011b. V\u011bt\u0161ina z&nbsp;nich m\u00e1 osv\u011bd\u010den\u00ed o&nbsp;akreditaci vydan\u00e9 Polsk\u00fdm akredita\u010dn\u00edm centrem. Akreditace potvrzuje, \u017ee laborato\u0159 m\u00e1 odpov\u00eddaj\u00edc\u00ed vybaven\u00ed a&nbsp;zp\u016fsobilost k&nbsp;prov\u00e1d\u011bn\u00ed dan\u00e9ho typu zkou\u0161ky. V&nbsp;kamenick\u00e9m pr\u016fmyslu nen\u00ed nutn\u00e9 prov\u00e1d\u011bt zkou\u0161ky u&nbsp;akreditovan\u00fdch instituc\u00ed. Pro p\u0159\u00edpravu dokumentace pot\u0159ebn\u00e9 ke ka\u017edodenn\u00ed pr\u00e1ci jsou posta\u010duj\u00edc\u00ed zkou\u0161ky prov\u00e1d\u011bn\u00e9 kteroukoli laborato\u0159\u00ed, je\u017e tyto slu\u017eby nab\u00edz\u00ed. V&nbsp;ur\u010dit\u00fdch situac\u00edch mohou ov\u0161em b\u00fdt po\u017eadov\u00e1ny zkou\u0161ky proveden\u00e9 v&nbsp;akreditovan\u00e9 laborato\u0159i &#8211; nej\u010dast\u011bji jsou akreditovan\u00e9 zkou\u0161ky pot\u0159eba v&nbsp;p\u0159\u00edpad\u011b soudn\u00edho sporu, jde-li o&nbsp;trestn\u00ed st\u00edh\u00e1n\u00ed nebo \u0161et\u0159en\u00ed stavebn\u00edho \u00fa\u0159adu. Ve v\u011bt\u0161in\u011b ostatn\u00edch p\u0159\u00edpad\u016f sta\u010d\u00ed proveden\u00ed zkou\u0161ky bez akreditace.<\/p>\r\n\r\n\r\n\r\n<p>Je ale pot\u0159eba \u0159\u00edci, \u017ee pokud v\u00e1m n\u011bkdo nab\u00edz\u00ed proveden\u00ed zkou\u0161ek, nen\u00ed to je\u0161t\u011b v\u0161e. P\u0159\u00edklad ze \u017eivota: byly p\u0159edlo\u017eeny v\u00fdsledky zkou\u0161ek kamene proveden\u00fdch jednou laborato\u0159\u00ed. Ponechme stranou, zda se jednalo o&nbsp;laborato\u0159 s&nbsp;akreditac\u00ed \u010di&nbsp;bez n\u00ed. Vybaven\u00ed laborato\u0159e bylo odpov\u00eddaj\u00edc\u00ed a&nbsp;person\u00e1l byl kvalifikovan\u00fd. V\u00fdsledky proveden\u00fdch test\u016f se ale z\u0159eteln\u011b neshodovaly se skute\u010dnost\u00ed &#8211; toho si okam\u017eit\u011b v\u0161imne ka\u017ed\u00fd, kdo s&nbsp;kamenem denn\u011b pracuj. Zkou\u0161ky se t\u00fdkaly mimo jin\u00e9 t\u00e9\u017e objemov\u00e9 hmotnosti, tj.&nbsp;hmotnosti kamene. Laborant, kter\u00fd testy prov\u00e1d\u011bl, se specializoval na zkou\u0161en\u00ed betonu, co\u017e, jak se uk\u00e1zalo, bylo p\u0159\u00ed\u010dinou \u0159ady chyb.<\/p>\r\n\r\n\r\n\r\n<p>Objemov\u011b se vzorky betonu li\u0161\u00ed od vzork\u016f p\u0159ipraven\u00fdch pro zkou\u0161en\u00ed kamene. Z&nbsp;n\u011bjak\u00e9ho nezn\u00e1m\u00e9ho d\u016fvodu se laborant domn\u00edval, \u017ee vzorek kamene je stejn\u011b velk\u00fd jako standardn\u00ed vzorek betonu &#8211; a&nbsp;pou\u017eil tyto rozm\u011bry pro v\u00fdpo\u010dty &#8211; p\u0159esto\u017ee rozd\u00edl ve velikosti byl dvakr\u00e1t v\u011bt\u0161\u00ed. To byl prvn\u00ed chybn\u00fd krok. P\u0159i&nbsp;zkou\u0161en\u00ed kamene se uva\u017euje velikost ka\u017ed\u00e9ho vzorku, jeliko\u017e ka\u017ed\u00fd vzorek m\u016f\u017ee m\u00edt r\u016fznou velikost, a&nbsp;do p\u0159\u00edslu\u0161n\u00fdch vzorc\u016f se pou\u017eij\u00ed pouze v\u00fdsledky m\u011b\u0159en\u00ed ka\u017ed\u00e9ho vzorku. Kdyby laborant nezanedbal toto m\u011b\u0159en\u00ed (co\u017e byla op\u011bt chyba), mohl si pov\u0161imnout p\u0159edchoz\u00ed chyby. Mo\u017en\u00e1 to bylo zp\u016fsobeno t\u00edm, \u017ee vzorky pro zkou\u0161en\u00ed betonu se vyr\u00e1b\u011bj\u00ed odl\u00e9v\u00e1n\u00edm do hotov\u00fdch forem, tak\u017ee velikost ka\u017ed\u00e9ho vzorku je teoreticky stejn\u00e1. To vysv\u011btluje skute\u010dnost, \u017ee se \u00fapln\u011b ka\u017ed\u00fd vzorek nem\u011b\u0159\u00ed? (dal\u0161\u00ed chyba). Z&nbsp;uveden\u00e9ho p\u0159\u00edkladu vypl\u00fdv\u00e1 z\u00e1v\u011br, \u017ee i&nbsp;p\u0159es technick\u00e9 vybaven\u00ed a&nbsp;kvalifikovan\u00fd person\u00e1l m\u016f\u017ee doch\u00e1zet k&nbsp;chyb\u00e1m v&nbsp;d\u016fsledku nedostate\u010dn\u00e9 praxe. Proto je vhodn\u00e9 vybrat si laborato\u0159, kter\u00e1 m\u00e1 se testov\u00e1n\u00edm kamene dostate\u010dn\u00e9 zku\u0161enosti.<\/p>\r\n\r\n\r\n\r\n<p>Prohl\u00e1\u0161en\u00ed o&nbsp;vlastnostech se t\u00fdk\u00e1 kontroly kvality spole\u010dnosti. Jedn\u00e1 se o&nbsp;dal\u0161\u00ed z&nbsp;odta\u017eit\u011b zn\u011bj\u00edc\u00edch n\u00e1zv\u016f, kter\u00e9 ve skute\u010dnosti ozna\u010duj\u00ed \u010dinnosti, je\u017e ka\u017ed\u00fd majitel kamenick\u00e9 firmy vykon\u00e1v\u00e1 ka\u017ed\u00fd den. Nav\u00edc p\u0159i&nbsp;zav\u00e1d\u011bn\u00ed r\u016fzn\u00fdch syst\u00e9m\u016f \u0159\u00edzen\u00ed v\u00fdroby, nebo dokonce p\u0159i&nbsp;zefektiv\u0148ov\u00e1n\u00ed ob\u011bhu zak\u00e1zkov\u00e9 a&nbsp;v\u00fdrobn\u00ed dokumentace mezi jednotliv\u00fdmi pracovi\u0161ti mnoho podnik\u016f nev\u011bdomky prov\u00e1d\u00ed kontroln\u00ed \u010dinnosti, kter\u00e9 jdou daleko nad r\u00e1mec po\u017eadavk\u016f kladen\u00fdch legislativn\u011b na v\u00fd\u0161e uveden\u00e9 postupy. Z&nbsp;toho plyne jednoduch\u00fd z\u00e1v\u011br, \u017ee dosud prov\u00e1d\u011bn\u00e9 \u010dinnosti je n\u011bkdy t\u0159eba pouze m\u00edrn\u011b upravit, d\u00e1t jim vhodn\u00fd n\u00e1zev (spr\u00e1vn\u011b pojmenovan\u00e9 pojivo) a&nbsp;budou vyhovovat po\u017eadavky mnoha polsk\u00fdch a&nbsp;evropsk\u00fdch p\u0159edpis\u016f. Praktick\u00e9 rady pro prov\u00e1d\u011bn\u00ed laboratorn\u00edch zkou\u0161ek p\u0159\u00edrodn\u00edho kamene.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-spacer\" style=\"height: 100px;\" aria-hidden=\"true\">&nbsp;<\/div>\r\n\r\n\r\n\r\n<p>Zdroj: <a href=\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/vademecum-\/1364-kto-bada-ten-pi-spokojnie.html\">Kurier kamieniarski<\/a><\/p>\r\n\r\n\r\n\r\n<p>Autor: Pawe\u0142 Szambelan&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;Publikov\u00e1no: 28.&nbsp;7.&nbsp;2021<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>Normy popisuj\u00ed parametry, kter\u00e9 mus\u00ed v\u00fdrobek spl\u0148ovat. Jedn\u00e1 se o&nbsp;parametry kvality t\u00fdkaj\u00edc\u00ed se zpracov\u00e1n\u00ed v\u00fdrobku&#8230;<\/p>\n","protected":false},"author":31,"featured_media":8489,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[372],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PRAKTICK\u00c9 RADY PRO PROV\u00c1D\u011aN\u00cd LABORATORN\u00cdCH ZKOU\u0160EK P\u0158\u00cdRODN\u00cdHO KAMENE - Sv\u011bt Kamene<\/title>\n<meta name=\"description\" content=\"Kvalita materi\u00e1lu se posuzuje na z\u00e1klad\u011b jeho fyzik\u00e1ln\u00edch a mechanick\u00fdch parametr\u016f, mezi n\u011b\u017e pat\u0159\u00ed pevnost v tlaku a ohybu, odolnost proti vytr\u017een\u00ed kotvy, proti od\u011bru, mrazu.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/vademecum-\/1364-kto-bada-ten-pi-spokojnie.html\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PRAKTICK\u00c9 RADY PRO PROV\u00c1D\u011aN\u00cd LABORATORN\u00cdCH ZKOU\u0160EK P\u0158\u00cdRODN\u00cdHO KAMENE - 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