{"id":75118,"date":"2016-02-11T05:29:27","date_gmt":"2016-02-11T05:29:27","guid":{"rendered":"https:\/\/globalroadtechnology.com\/\/?p=75118"},"modified":"2019-07-11T04:18:45","modified_gmt":"2019-07-11T04:18:45","slug":"asphalt-surfacings","status":"publish","type":"post","link":"https:\/\/globalroadtechnology.com\/asphalt-surfacings\/","title":{"rendered":"Asphalt Surfacings"},"content":{"rendered":"

Whilst Asphalt Surfacings is typically generalised to just be asphalt, there are a number of variations which incorporate different binders and mix compositions to suit a range of applications.<\/h3>\n

Whilst it is recognised that an asphalt mix is characterised by:<\/strong><\/p>\n

    \n
  1. Stone size and gradation: Is representative of the array of stone sizes or \u2018grading\u2019 of a mix and can be altered to achieve specific void contents<\/li>\n
  2. Binder type and content: Is representative of the elasticity and flexural response of an asphalt mix which also reflects the stiffness and resistance of the mix to load induced fatigue.<\/li>\n
  3. Filler type and content: Is representative of the additional material to manage void contents, stability and work ability of the mix<\/li>\n<\/ol>\n

    An asphalt mix is typically designed to meet application, whether it be for structural, aesthetic or safety requirements. In Australia, common asphalt<\/a> mixes include:<\/p>\n

    Dense Graded Asphalt<\/strong><\/p>\n

    Dense graded asphalt is considered the most commonly used application of asphalt which comprises a low void, diversely graded constituent mixed with binder and filler. The key benefits of this mix are illustrated in its versatility in application, typically used in both structural and wearing courses. Other benefits of dense graded asphalt include the range of available binders that can be modified to suit its role in the pavement structure and the desired fatigue resistance and stiffness characteristics.<\/p>\n

    Open Graded Asphalt<\/strong><\/p>\n

    Open graded asphalt is characterised by its \u2018gap grading\u2019 which removes the stone gradation between the fine and course stone, essentially creating a mix with a high void content. This mix is commonly adopted for its porosity and ability to reduce water spray and sheeting of water over the pavement surface during high intensity rainfall events. Consequently, waterproofing is essential and it is common practice to undertake \u2018flushing\u2019 of the asphalt periodically to remove sediment buildups.<\/p>\n

    Stone Mastic Asphalt<\/strong><\/p>\n

    The term \u2018mastic\u2019 within stone mastic asphalt represents the filler and bituminous binder that surround the coarsely graded aggregate skeleton. The aggregate skeleton provides additional stone on stone contact that is considered superior to conventional mixes in resisting internal rutting and deformation. It is also characterised by its comparatively increased binder content, which provides greater elasticity and resistance to load induced fatigue.<\/p>\n

    When selecting an appropriate asphalt surfacings types, additional consideration is typically given to influences including, typical surfacing life, construction thicknesses, performance characteristics and safety factors.<\/p><\/blockquote>\n

    For more information on Global Road Technology or Asphalt Surfacings please contact GRT<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Whilst Asphalt Surfacings is typically generalised to just be asphalt, there are a number of variations which incorporate different binders […]<\/p>\n","protected":false},"author":5,"featured_media":75119,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[115],"tags":[],"class_list":["post-75118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-articles"],"yoast_head":"\nWhat are the common types of asphalt mixes in Australia? - GRT<\/title>\n<meta name=\"description\" content=\"An asphalt mix is typically designed to meet application, whether it be for structural, aesthetic or safety requirements.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/globalroadtechnology.com\/asphalt-surfacings\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the common types of asphalt mixes in Australia? 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