8. CAPSA’11 & General <strong>AAPA</strong> <strong>2011</strong> <strong>Study</strong> <strong>Tour</strong> Group Report1. Conference format ensures participationUnlike most technical conferences CAPSA attempts to involve participants in workshops that directtheir combined wisdom to areas in development or transition to ensure early redirection orreinforcement of the path. This can be challenging as delegates will have their views, andexpertise, subjected to peer overview. The environment opens up the opportunity for opensharing and, for those less experienced, it provide the opportunity to learn from those moreexperienced and to understand the breath of opinions around the workshop topics. At CAPSA’11workshops were run in five parallel sessions with delegates selecting according to there areas ofinterest / expertise.Workshop participation, Closing session, social events and the CAPSA’11 <strong>org</strong>anizing committeeAt conferences there is also the need to accommodate highly specialized fields of developmentwhich are of importance but limited general interest. This was achieved through numerousparallel speciality sessions which allowed the large group of delegates continue to participateaccording to the topics they considered relevant.The conference tasks the technical <strong>org</strong>anizing committee with the responsibility of reviewing thereactions of the delegates and the presentation of the papers with respect to impact and meetingthe goals of the conference and its key themes. This up to the minute feedback is conducted liveand receives feedback from the theme coordinators, authors and delegates as to agreement onthe conclusions. The closing session also accepts resolutions derived in workshops or from any ofV4-2 Page 112
8. CAPSA’11 & General <strong>AAPA</strong> <strong>2011</strong> <strong>Study</strong> <strong>Tour</strong> Group Reportthe sessions. CAPSA’11 endorsed the formation of the Southern Hemisphere Sprayed SealingAlliance and a resolution to facilitate the importation of bitumen into South Africa.The CAPSA conference was not a one way flow of experience but promoted the interaction of thedelegates, a all levels of experience, encouraging learnings, challenging of ideologies and directingbetter outcomes of the conference theme of “Roads for the Future”2. Roads of the future - Living within the carrying capacity of our planetThe conference had six focus areas and a slot for bulletin papers (not pre-reviewed and simplyentry criteria). All the papers are available for download from the CAPSA site www.capsa11.co.za,in the electronic version of this report, can be accessed from the references in Chapter 9.The focus areas matched the conference theme “Roads for the future – Living within the carryingcapacity of our planet” as follows:Focus Area 1: Reduced energy consumption of bituminous layersFive papers, Jenkins integrates energy cost, CO 2 generation into the LCC comparison of BSM,granular & HMA pavements; van der Ven describes the process in the Netherlands to includeWMA in CO 2 and LCC evaluation; Molenaar describes the design for double drum production ofHMA with up to 60% RAP; Naido reviews the introduction of WMA into South Africa; Olardpresents European experience in using Low Energy AsphaltFocus Area 2: Reducing the impact of road building activities on the environmentEight papers: Key papers – van der Ven, wide ranging review of waste material inclusion inasphalt; Grobler, economic evaluation of alternate asphalt options (UTFC, Brasso) in airport use;O’Connel,l challenging the chemicals used in bituminous product laboratories; le Bouteiller, thebroad advantages of bitumen emulsions; Nolting, 90% RAP in German asphalt; Winkelmann, steelslag improved use of a waste material.Focus Area 3: Designing for extended performance of asphaltTwenty three papers: Key papers - Thothela, improving seal durability through pre-coating;Grobler, thin friction surfacing for airports; Liebenberg, innovation is asphalt mix design on aheavily trafficked route; Browne, New Zealands six years performance of foam bitumen;Denneman, performance criteria for cold lay surfacing materials; Twagira, temperatureimplications for BSM curing; van Zyl, slurry design method proposals; Molenaar P, development &performance of UTFC for airport; Roux, critical review of UTFC in South Africa.V4-2 Page 113