مروري بر اقدامات ايمني جهت كاهش تصادفات مربوط به عابرين پياده

Evaluation the Utilizing Fine Steel Slag and Mine Particles as Filler in Porous Asphalt Mixtures

نقش پياده روي به عنوان يكي از اجزاي اصلي حمل و نقل بر هيچ كس پوشيده نيست. اين نقش در كلان شهرها و به ويژه در راستاي دستيابي به حمل و نقل پاك و توسعه پايدار شهري بسيار حائز اهميت است. بعلاوه حضور و آمد و شد عابرين پياده باعث ايجاد فضاي مناسب و ايمن شهري و ارتقاء سطح مراودات و فعاليت هاي فرهنگي و اجتماعي در سطح شهر خواهد بود. ليكن متاسفانه در بسياري از شهرهاي ما، زيرساخت ها حمل و نقل با توجه به نياز خودروها طراحي و اجرا مي گردند و كمترين توجه معطوف نياز عابرين پياده مي باشد. اين غفلت منجر به كاهش پياده روي و حتي كاهش استفاده از حمل و نقل عمومي شده و افزايش استفاده از خودروي شخصي و لذا توسعه شهري خودرو محور را در پي خواهد داشت. بديهي است در چنين شهرهايي معضلات عديده بروز خواهند كرد و به ويژه مشكلات ايمني عابرين پياده در آن ها بركسي پوشيده نيست. اين پژوهش به جمع بندي و شرح اقدامات ممكن براي بهبود زيرساخت هاي شهري و افزايش ايمني عابرين پياده مي پردازد.

Since preserving the safety and quality of road is among the most important factors in designing and constructing pavements, using porous asphalt as a model of water guiding pavement makes an opportunity to maintain the road safety in raining condition and reduces greatly the risks due to improper climate conditions. Regarding to the construction model of porous asphalt pavement, attention to its quality and durability are among the important issues in designing this type of asphalt mixtures. Experts and researchers have suggested using modern materials and additives in order to improve the function of porous asphalt. One of these materials which is paid attention in using hot common asphalt (HMA) is a waste named steel slag that its positive effects have been seen frequently in function of hot asphalt mixtures. In this research, using slag fine-aggregates as filler in porous asphalts has been compared to fine-aggregates of mountain rocks in order to investigate more accurately. The results obtained from the function tests like Cantabro and moisture sensitivity (lottman) specified that using steel slag as filler not only has improved the function of porous asphalt mixture, but also it has led to decline in functional properties. Moreover, in this research, the causes of obtained results have been reviewed and then, some suggestions have been posed to improve the function of slag porous asphalt function.