Construction specification of ECOPHALT mixture Preparation for the application Checking and maintaining the equipment   Construction equipment has to be checked and serviced to be in a good working condition to prevent a poor construction. Warming up of equipment and tools   Application of ECOPHALT is done at a higher temperature than conventional asphalt mixture, screed, temper, spade, and rake of the finisher need to be warmed up before starting the work. Check and clean the base or intermediate layer before starting the construction. Keep the surface of base or intermediate layer without humidity, dust, soil before applying ECOPHALT mixture. Tack coating   To improve the adherence of ECOPHALT mixture, tack coating needs to be evenly done and sufficiently treated prior to applying ECOPHALT mixture.   Material : As the tack coating agent RC-0, RC-1, or emulsified rubber asphalt (RC(C)-4) is appropriate, which should be used within 60 days of production.   Asphalt agent Qualtity(§¤/§³) Spreading temperature(¡É) RC-0 RC-1 RC(C)-4 0.1¡­0.3 0.1¡­0.3 0.2¡­0.6 25¡­60 30¡­70 -   Tack coating should be conducted surface without humidity, aggregate, dust, or other unwanted material. A distributor that can spread asphalt agent evenly shall be used, and a hand spray can be used in the case of a small scale construction.   Tack coating should be done at a temperature of 5¡É or higher. (Needs to be stopped when raining) Too much asphalt agent should not be used on a cement concrete pavement. When spraying asphalt agent, hand rail of bridges, median strip and kerbs should be covered not to be contaminated. On site test shall be done to make sure adequate amount is sprayed. If spraying asphalt agent has not been done evenly, a tire roller shall be used to make the coating even. After spraying the emulsified asphalt, enough time has to be given for the material to be sufficiently dried. In the case of paving the second layer rightafter the base layer has been laid down, clearing may be dispensed with if there is no unwanted material. Joint treatment has to be thoroughly made to prevent Cold Joint. Construction/application   Quality during applying the mixture effects quality of the final pavement. Requirement of transverse slop has to be kept precisely and needs to be completed smoothly. Try to achieve consistency of surface structure. Temperature of ECOPHALT mixture upon being delivered, and temperature of the mixture shall be over 150¡É. Following cautions needs to followed, Compaction : Over 140¡É for the first layer, over 120¡É for the second layer, and the final layer shall be done at a temperature over 90¡É. Paving with a finisher   Once the mixture of ECOPHALT is spreaded, the pavment surface needs to be investigated to see if there is any of the following problems; if the slop through the transverse is not evenly spread, When the asphalt is not evenly spread; lumpy, coarse, or only fine particles are concentrated in one region. Manual paving   Paving with a finisher is strongly recommended, and even if the paving is done manually the quality should be the same as the case of using a finisher. Compaction   Once paving of ECOPHALT mixture is done, Compaction should be commenced at an appropriate temperature. Such Compaction can be done using MAKADAM, TIRE, TANDEM ROLLER. Considering the Compaction commences at a high temperature, TANDEM can be used firstly. Compaction procedure   First Compaction will be done using MAKADAM ROLLER, which is relatively light, on joint parts. Second Compaction will be done using a TIRE ROLLER of 8~15 ton weight. Final Compaction will be done using a TANDEM ROLLER of 6~8ton weight until the trace of rollers disappear.Second and final Compaction can be done using TANDEM) Compaction using a ROLLER is kept at a low speed. Advancing speed, in general, is 2~3km/hr for the case of ROAD ROLLER, and 6~10km/hr for the case of TIRE ROLLER. Other cautions   Amount of reduction after the Compaction procedure is very small for the case of ECOPHALT mixture, thickness of the first layer should be determined through a test paving. For the case of a small scale paving, experience may be used in deciding the thickness. Compaction of ECOPHALT mixture should be done promptly because it cools down quickly due to porosity. Manual modification of the surface has little effect because there is not so much fine particles in ECOPHALT mixture. manual modification is not recommended. When such repair work has to be done, waste from the pavement should not be used but be discarded. Vibration should not be applied when Compaction ECOPHALT mixture. A high level safety measure should be used when using ECOPHALT mixture because its temperature is about 10¡­20¡É higher than using conventional asphalt mixtures. When transporting ECOPHALT mixture, dump truck should have insulating cover. As mentioned earlier, insulation cover needs to be used when transporting the ECOPHALT mixture.