Asfalt yol kaplaması ile sanayi atık lifli reaktif pudra beton yol kaplamasının maliyet karşılaştırması

Abstract

Ülkemizde havaalanı pistlerinde, terminallerde, otopark sahalarında ve şehir içi yollarda, beton kaplamaların yapımı yaygınlaşmaktadır. Bu çalışmada kaplama kalınlık ve maliyet karşılaştırması için, Bitümlü Sıcak Karışım (BSK) kaplama ve bir Reaktif Pudra Beton tipi olan Sanayi Atık Lifli Reaktif Pudra Beton (SANLİF-RPB) kaplama olmak üzere 2 tip kaplama seçilmiştir. SANLİF-RPB’un basınç ve eğilme dayanımları deneysel olarak bulunmuştur. SANLİF-RPB’un basınç ve eğilme dayanım sonuçlarıyla, beton yol kaplama kalınlıkları hesaplanmıştır. Hesaplanan kaplama kalınlık değerleri ile kaplama maliyet hesapları yapılmıştır. Çalışmada kaplama kalınlıkları ve maliyet hesaplama sonuçları karşılaştırılarak, BSK ve SANLİF-RPB yol kaplamalarının ekonomik irdelemesi yapılmıştır. Çalışmada; Eşdeğer Tek Dingil Yükü Tekerrür Sayısı (W8,2) 10x106 olan yol kaplamasında, SANLİF-RPB kaplama kalınlığı 14.73 cm ve asfalt kaplama kalınlığı 19 cm olarak bulunmuştur. Çalışma sonucunda, maliyet olarak W8.2=10x106 değerine göre 1 km yol uzunluğu için, SANLİF-RPB kaplama maliyetinin, BSK kaplama maliyetinden %20.99 daha ekonomik olduğu ortaya çıkmıştır.

Keywords

• Asfalt kaplama, Rijit kaplama, Reaktif Pudra Beton (RPB), Atık çelik lif, Asfalt kaplama maliyeti, Rijit kaplama maliyeti

Cost Comparison of Asphalt pavement and Industrial Waste Steel Fibrous Reactive Powder Concrete Pavement

Abstract

Flexible pavement; surfacing consists of basis and sub-basis layers. High-standards highway and motorways are made of layers which have got bituminous hot mixtures. Rigid pavement occurs from sub-basis and concrete surfacing which are made on it. Construction of concrete pavement has become widespread in places such as airports, parking lots, terminals and urban roads in our country. In this study, 2 types of pavement as Hot Mixture Asphalt (HMA) pavement and Industrial Waste Steel Fibrous Reactive Powder Concrete (IWFIB-RPC) pavement were compared for pavement thickness and cost comparison. On this study, CEM II/A-M (P-L) 42.5 R type concrete has been used on the production of IWFIBRPC. Steel fibers as industrial waste have been procured from Bitlis Industrial Vocational and Technical High School. Steel fibers which are waste from industrial steel material production in machine atelier at the high school have been used on the production of IWFIB-RPC samples as getting to the laboratory of the construction department in Bitlis Eren University, Technical Sciences Vocational School. Steel fibers have got 0-1 mm diameter and 0-10 mm length meanly. IWFIB-RPC has been used in citywater as mixture water. HMA surfacing asphalt concrete 50/70 has been chosen for the calculation of thickness and cost. On the study, Mooney's suspension viscosity model rating has been considered for mixture amount of IWFIB-RPC production. Sample patterns are 50x50x50 mm for pressure samples and 50x50x300 mm for flexure samples. Any compaction pressure has not been applied during the socket on the production of IWFIB-RPC. Samples have been placed as being skewered in patterns. IWFIB-RPC’s which have been taken from pattern after 24 hours have been taken 28-days 20°C standard water cure. Unit prices for 2014 have been taken from the list of unit price of GDH and the Ministry of Environment and Urban Planning, by types of layer. For IWFIBRPC, 769 kg CEM II/A-M (P-L) 42.5 R type concrete have been used on 1 m3 mixture. Total surface area of road has been calculated as 24 000 m2 . Compressive and flexural strength of IWFIB-RPC were obtained experimentally. IWFIB-RPC pavement thickness was calculated according to the compressive and flexural strength results. Besides, pavement costs were calculated. In the study, economical evaluation of HMA pavement and IWFIB-RPC pavement was performed by comparison of pavement thickness and cost results. IWFIB-RPC and HMA pavement thicknesses were calculated as 14.73 cm and 19 cm, respectively, according to the Equivalent Single-Axe Load Absolute Frequency (W8.2) 10x106 . For flexible pavement, the thicknesses of wearing layer (surface + binder + asphalt pavement base course), base course and sub-base course were calculated as 19 cm, 15 cm and 20 cm, respectively. For rigid pavement, the thicknesses of IWFIB-RPC and sub-base course were calculated as 14.73 cm and 20 cm, respectively. As a result of study, it was found that IWFIB-RPC rigid pavement can be constructed as 35.68% lower thickness compared to BSK flexible pavement for equal traffic loading. IWFIB-RPC pavement cost was calculated as 1 122 380 TL and HMA pavement cost was calculated as 1 420 503 TL under the 8.2 Tones Equivalent SingleAxe Load Absolute Frequency (W8.2) 10x106 . it was obtained that cost of IWFIB-RPC pavement is 20.99% more economic than the cost of HMA pavement for 1 km road distance

Keywords

• Asphalt pavement, Rigid pavement, Reactive Powder Concrete (RPC), Waste steel fiber, Asphalt pavement cost, Rigid pavement cost