This British Standard complements BS EN 13791, which gives methods for determining the characteristic in-situ compressive strength in concrete structures and precast concrete components based on:<\/p>\n
core testing;<\/p>\n<\/li>\n
rebound hammer, ultrasonic pulse velocity and pull-out force measurements after a relationship with core strength has been determined for the particular concrete under investigation.<\/p>\n<\/li>\n<\/ol>\n
This British Standard provides additional guidance on:<\/p>\n
planning an investigation (see Clause 5<\/b>);<\/p>\n<\/li>\n selection of test methods (see 5.4<\/b>);<\/p>\n<\/li>\n selection of the test locations (see 5.5<\/b> and 5.6<\/b>);<\/p>\n<\/li>\n assessment of individual core results within a group (see 6.1<\/b>);<\/p>\n<\/li>\n assessment where the strength of concrete based on test specimens is in doubt (see Clause 7<\/b>).<\/p>\n<\/li>\n<\/ul>\n In addition, this British Standard provides guidance on the following cases not covered by BS EN 13791:<\/p>\n assessment of an unknown structure using a margin based on the t-statistic (see 6.2<\/b>);<\/p>\n<\/li>\n use of indirect methods without correlation to core strength (see 6.3<\/b>);<\/p>\n<\/li>\n relative testing, i.e. comparison of a volume of concrete under investigation with concrete in similar elements that has been accepted (see 6.4<\/b>);<\/p>\n<\/li>\n action when the producer has declared nonconformity (see Clause 8<\/b>).<\/p>\n<\/li>\n<\/ul>\n This British Standard does not provide guidance on:<\/p>\n the use of cores with a diameter of less than 50 mm or the use of microcores;<\/p>\n<\/li>\n whether a structure has adequate durability;<\/p>\n<\/li>\n the use of in-situ testing as an alternative to conformity testing based on test specimens.<\/p>\n NOTE For completeness, Figure 1 and Figure 2 identify such a procedure but this British Standard does not attempt to provide any of the necessary detail.<\/p>\n<\/blockquote>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":" Assessment of in-situ compressive strength in structures and precast concrete components. Complementary guidance to that given in BS EN 13791<\/b><\/p>\n\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2010<\/td>\n 40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":218275,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1258,2641],"product_tag":[],"class_list":{"0":"post-218273","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-100-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/218273","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/218275"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=218273"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=218273"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=218273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}