{"id":214270,"date":"2024-10-19T13:53:08","date_gmt":"2024-10-19T13:53:08","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-12697-492014\/"},"modified":"2024-10-25T06:51:10","modified_gmt":"2024-10-25T06:51:10","slug":"bs-en-12697-492014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-12697-492014\/","title":{"rendered":"BS EN 12697-49:2014"},"content":{"rendered":"

This European Standard describes a test method to determine the friction at 60 km\/h after polishing during a fixed number of passes on surfaces of bituminous mixtures samples. The samples used are either produced in a laboratory or are cores taken from the site. NOTE This procedure was previously known as Wehner and Schulze method (see [1]).<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols <\/td>\n<\/tr>\n
9<\/td>\n4 Principle
5 Equipment
5.1 Test device
5.1.1 General
5.1.2 Polishing unit
5.1.2.1 General
5.1.2.2 Polishing head <\/td>\n<\/tr>\n
10<\/td>\nFigure 1 \u2014 Polishing head (view from below)
5.1.2.3 Polishing rollers <\/td>\n<\/tr>\n
11<\/td>\nFigure 2 \u2014 Polishing rollers \u2014 3D view, cross and longitudinal section <\/td>\n<\/tr>\n
12<\/td>\n5.1.2.4 Water-quartz-powder mixture projection device
5.1.3 Specimen clamping system
5.1.4 Friction measuring unit
5.1.4.1 General
5.1.4.2 Rotating head
Figure 3 \u2014 Measuring head (view from below) <\/td>\n<\/tr>\n
13<\/td>\n5.1.4.3 Moment measuring system
5.1.4.4 Rotation speed measurement system
5.1.4.5 Sliding blocks for friction measuring
Table 1 \u2014 Properties of the rubber of a sliding block <\/td>\n<\/tr>\n
14<\/td>\nFigure 4 \u2014 Shape of the rubber, Sliding block (plan view and cross section)
5.1.4.6 5.1.4.6 Water projection system
5.2 Glass-control plate
5.3 Sand-blasting-equipment
6 Other materials
6.1 Quartz powder <\/td>\n<\/tr>\n
15<\/td>\n6.2 Water quartz powder mixture
6.3 Corundum
Table 2 \u2014 Grading requirements for corundum
7 Test method
7.1 Preparation of the specimens
7.1.1 Specimens prepared in the laboratory
7.1.2 Specimens taken from the site <\/td>\n<\/tr>\n
16<\/td>\n7.2 Polishing procedure
7.3 Friction measurement
7.3.1 Pre-test check of the measurement device <\/td>\n<\/tr>\n
17<\/td>\n7.3.2 Friction test
8 Calculation and expression of the results
8.1 Friction force and friction coefficient
8.2 Determination of FAP <\/td>\n<\/tr>\n
18<\/td>\n9 Test report
10 Precision
Table 3 \u2014 Precision data on bituminous mixtures <\/td>\n<\/tr>\n
19<\/td>\nAnnex A (informative) Example of polishing head and friction unit
Figure A.1 \u2014 Example of polishing head and skid resistance measuring device (Wehner and Schulze machine) <\/td>\n<\/tr>\n
20<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Bituminous mixtures. Test methods for hot mix asphalt – Determination of friction after polishing<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2014<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":214272,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1301,2641],"product_tag":[],"class_list":{"0":"post-214270","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-93-080-20","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\/214270","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\/214272"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=214270"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=214270"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=214270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}