{"id":11494,"date":"2025-12-25T10:48:33","date_gmt":"2025-12-25T10:48:33","guid":{"rendered":"https:\/\/ykmtest.com\/?post_type=product&#038;p=11494"},"modified":"2025-12-25T10:48:34","modified_gmt":"2025-12-25T10:48:34","slug":"j-ring-astm","status":"publish","type":"product","link":"https:\/\/ykmtest.com\/it\/prodotto\/j-ring-astm\/","title":{"rendered":"Anello a J, ASTM"},"content":{"rendered":"<p class=\"p2\"><span lang=\"TR\">ASTM J-Ring \u00e8 un'apparecchiatura di prova progettata per valutare la capacit\u00e0 di passaggio e le caratteristiche di scorrimento del calcestruzzo autocompattante (SCC), pienamente conforme alla norma ASTM C1621 \u201cMetodo di prova standard per la capacit\u00e0 di passaggio del calcestruzzo autocompattante mediante J-Ring\u201d. Questo test simula gli ostacoli incontrati dall'SCC quando scorre attraverso i ferri di armatura o le casseforme densamente rinforzate. Misurando la diffusione del flusso libero del calcestruzzo attorno al J-Ring, si determina il grado di restrizione del flusso. Il J-Ring \u00e8 realizzato con barre di acciaio lavorate con precisione, posizionate uniformemente lungo il perimetro dell'anello. La disposizione delle armature \u00e8 conforme ai requisiti ASTM C1621: diametro delle barre 16 mm e altezza 50 \u00b1 2 mm. Il diametro interno dell'anello \u00e8 di 300 \u00b1 2 mm e quello esterno di 360 \u00b1 2 mm. Questa geometria rappresenta realisticamente il flusso di calcestruzzo attraverso l'armatura congestionata. Il principio di prova \u00e8 applicato come descritto nella norma ASTM C1621. L'anello J-Ring viene posizionato al centro di un tavolo di flusso o di una superficie metallica piana. Al centro dell'anello viene posizionato un cono di slump. Dopo aver riempito il cono di calcestruzzo e livellato la superficie, il cono viene sollevato con attenzione. Il calcestruzzo viene lasciato spandere liberamente attraverso l'anello J-Ring. Il diametro di spandimento viene misurato in due direzioni perpendicolari e il valore medio viene registrato come \u201cDiametro di spandimento J-Ring\u201d.\u201d<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>L'ASTM J-Ring \u00e8 un'apparecchiatura di precisione progettata per misurare la capacit\u00e0 di passaggio e le caratteristiche di flusso del calcestruzzo autocompattante (SCC) in piena conformit\u00e0 agli standard ASTM C1621.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[143,146],"product_tag":[],"class_list":{"0":"post-11494","1":"product","2":"type-product","3":"status-publish","5":"product_cat-concrete-compression-machines","6":"product_cat-scc-testing-equipments","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>J-Ring, ASTM - YKM TEST<\/title>\n<meta name=\"description\" content=\"ASTM J-Ring for self-compacting concrete testing. Precision steel design compliant with ASTM C1621 for evaluating SCC passing ability and flow restriction.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ykmtest.com\/it\/urun\/j-ring-astm\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"J-Ring, ASTM\" \/>\n<meta property=\"og:description\" content=\"ASTM J-Ring for self-compacting concrete testing. 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