Presentation on theme: "D EALING WITH " SUPPLY CHAINS ": T HE CASE STUDY : S UPPLY CHAINS FOR THE CONSTRUCTION OF RECYCLED ASPHALT PAVEMENT FOR ROADS AND STREETS IN I ASI C OUNTY."— Presentation transcript:
D EALING WITH " SUPPLY CHAINS ": T HE CASE STUDY : S UPPLY CHAINS FOR THE CONSTRUCTION OF RECYCLED ASPHALT PAVEMENT FOR ROADS AND STREETS IN I ASI C OUNTY OF R OMANIA Radu Andrei Gheorghe Lucaci Alina - Mihaela Nicu ă Mihaela Condurat
The object of the case study One building product: New asphalt pavement obtained by two alternative recycling technologies applied on existing deteriorated pavements for roads and streets In situ recycling – for roadsIn plant recycling – for streets
The stakeholders involved the Research Centre of our Universitythe Regional Road Department of Iasithe Mayory of Iasi STRABAG: European-based technology group for construction services – for in situ recycling of the pavements SC VIAROM S.A IASI– for in plant recycling of the pavements Road construction enterprises:
The scope of the case study In situ recycling – for roads
The scope of the case study Plant recycled asphalt pavement for streets Asphalt Plant
The raw materials usedSupplier Bitumen binder Lime or limestone filer Crushed aggregate of various sizes Various adhesives or modifiers Electrical energy The recycled materials are the asphalt mixes resulted from the milling of the surface layer (wearing course, binder course) Rompetrol Vega Ploieti Carpatcement Sa Bicaz Carpat Agregate Sa Iterchimica Srl Roma – Italy E.ON Moldova
The manufacture location Asphalt plants are located in the county of Iasi
The environmental, social and economic impacts of the product The environmental impacts of transportation are likely to be minimal, since the large part of transports will happen within county of Iasi. However, the specific distance traffic road transport might play a larger role, thus increasing the GHG emissions. In order to assess the impact of these products has been taken into consideration the whole processing chain from cradle (resource extraction) to fabrication and layering the mix on the road site or on the street.
The supply chain of recycled asphalt pavement Crushed aggregates Bitumen binder Lime or limestone filer Adhesives or modifiers Asphalt plant Placing and compacting the processed asphalt materials Milling the surface layers Waste asphalt Processing asphalt materials
Case study – objectives The objective of this case study was to compare two technologies alternative from the CO 2 e emissions point of view. The study has been conducted by using the TRL asPECT software on a road sector of one kilometer length, in both perspectives of “cradle to site” and “cradle to grave”. Alternative 1 : Complete new pavement – traditional road Alternative 2 : Recycled pavement – the existing pavement layer are replaced with recycled asphalt pavement
Case study - the stages of the production chain
Case study – perspective “Cradle to site” Alternative 1/ Complete new pavement The environmental impact assessment expressed in kg of CO 2 e per tone of asphalt mix cm Layer Layer thickness Quantity of mixture (t) CO 2 e kg/t CO 2 e kg/km road (7000 m 2 ) BA 164 cm644 t194,8125.437,7 BAD 256 cm1008 t214,8216.517,5 AB 215 cm2520 t213,3537.440,1 TOTAL25 cm4172 t207,6879.395,3
Case study – perspective “ Cradle to site” Alternative 2 / Recycled pavement Rehabilitation of an existing road, having the same pavement structure as that of the alternative one, but where all the existing asphalt layers: BA 16, BAD 25 & AB 2 are realized with plant recycled mix. cm Layer Layer thickness Quantity of mixture (t) CO 2 e kg/t CO 2 e kg/km road (7000 m 2 ) BA r 164 cm644 t143,892.592,2 BAD r 256 cm1008 t132,8133.836,8 AB r 215 cm2520 t124,2313.096,8 TOTAL25 cm4172 t133,6539.525,8
Case study – perspective “Cradle to site” Life Cycle Stages Summary Results Total construction tonnage Steps categorization Complete new asphalt pavement Recycled asphalt pavement Total kg CO 2 e Material extraction and processing 149.987,36127.903,51 Transport to plant 513.843,54242.998,67 Asphalt production 116.194,2769.253,48 Transport to site 99.370,11 Laying and Compacting 16.688,0 Total896.093,29556.213,78 Final comparative results
Case study – perspective “Cradle to grave” Life Cycle PhaseTotal CO 2 e Material extraction and processing27.235,64 Transport to plant26.353,70 Asphalt production16.754,62 Transport to site6.049,79 Laying and Compacting2.576,00 Project works0,00 Maintenance108.500,00 End of life41.037,57 PerspectiveCradle to grave Total kg CO 2 e228.507,32 Tonnage1164,00 kg CO 2 e/tonne196,31 Alternative 1/ Complete new pavement The environmental impact assessment expressed in kg of CO 2 e per tone of asphalt mix
Case study – perspective “Cradle to grave” Life Cycle PhaseTotal kg CO 2 e Material extraction and processing27.453,25 Transport to plant12.487,47 Asphalt production15.799,78 Transport to site6.049,79 Laying and Compacting2.576,00 Project works0,00 Maintenance86.000,00 End of life13.317,51 PerspectiveCradle to grave Total kg CO 2 e167.210,93 Tonnage1164,00 kg CO 2 e/tonne143,65 Alternative 2 / Recycled pavement
Case study – perspective “Cradle to grave” Final comparative results Life Cycle Phase Complete new pavement Recycled asphalt pavement Total kg CO 2 e Material extraction and processing 27.235,6427.453,25 Transport to plant26.353,7012.487,47 Asphalt production16.754,6215.799,78 Transport to site6.049,79 Laying and Compacting2.576,00 Project works0,00 Maintenance108.500,0086.000,00 End of life41.037,5713.317,51 PerspectiveCradle to grave Total kg CO 2 e228.507,32167.210,93 Tonnage1164,00 kg CO 2 e/tonne196,31143,65
Case study – comparative analysis Life Cycle Stage Summary of the environmental impact assessment expressed in kg CO 2 e/t for the investigated pavements emissions alternatives Complete new asphalt pavement Recycled asphalt pavement kg CO 2 e/tTotal kg CO 2 eCO 2 e kg/tTotal CO 2 e kg Perspective Cradle to site Cradle to grave Cradle to site Cradle to grave Total kg CO 2 e78.968,75228.507,3264.366,29167.210,93 Tonnage644,001164,00644,001164,00 kg CO 2 e/tonne122,62196,3199,95143,65
Case study - conclusions: Analysis was conducted from both the ”cradle to site” and ”cradle to grave” perspectives on one kilometer pavement length Very positive social and economic impacts Leads to significant reduction (up to 50%) of CO 2 e emissions In case of using cold or warm recycled mixes, the expected quantities of CO2e will be less.
The degree of development of the supply chain and the availability, within the region, of manufacturers and distributors The supply chain provides an example of good practice for the performance sustainability of existing roads. There are several companies which deals specifically with pavement recycling in the county of Iasi, namely SC VIAROM SA society. There are several manufacturers and distributors of materials for recycled pavements, such as the asphalt plant, located in the county of Iasi and the filer and aggregates factories from the county of Neamt.
Supply chain monitoring, tracing and performance The supply chain is monitored by the recycling companies for roads, by the Regional Road Department of Iasi and by the City Hall of county Iasi for streets. The supply chain is successfully because the close cooperation between road and street administration, industry and research. Also, the demand pressure from road users who are expecting to use better roads is an important factor.
Barriers to be overcome and feasible solutions for further development of the supply chain The competition with larger businesses producing technologies, which are already developed and accepted on the market, and a limited knowledge of the new products among the stakeholders, could represent significant obstacles for both companies. For the further development of the supply chain of recycled pavements it is envisaged the extension of this chain for covering the entire network.
Lessons from this case study This case demonstrates how close cooperation between roads, industry and research centres can develop performant streets and road pavements by using sustainable technologies (recycled materials instead of existing and energy intensive technologies). It also demonstrates the actual potential for regional development.
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