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Trinidad Lake Asphalt (TLA) contains about 35% to 37% of the mineral fine particles (ash). Ash density than pure asphalt density, TLA modified asphalt finished in the storage and transportation process is easy to produce ash segregation, resulting in the use of performance degradation. To this end, this paper Foshan Huancheng interpersonal Quick Link TLA modified asphalt pavement construction around the ash content of 40% TLA modified asphalt mixture performance impact of systematic theoretical analysis and laboratory tests, which proposed ash control indicators and construction proposals. 1) to determine the method of preparation and determination of the ash content of the laboratory TLA modified asphalt, and design trial TLA modified asphalt ash settlement law test test instrument (sedimentation cylinder). The sedimentation tube in TLA modified asphalt is divided into seven layers (storey and radius of the order from top to bottom are 4cm), select the five types of settling time, layers of ash content were measured each settling time. The results showed that throughout the settlement process, the layer 1 and layer 7 respectively, the minimum and maximum boundary layer of ash content, the ash content of the intermediate level changes are within the scope of the ash content of the boundary layer, and increase with the settling time, ash precipitation the segregation will increasingly obvious. This shows that the entire TLA modified asphalt storage and transportation process, the decreasing tendency of the ash content of the tank to the top of the asphalt most obvious, Conversely, the increasing trend of the bottom of the ash content is most obvious. 2) to determine a method for the preparation of the different ash content TLA modified asphalt, thereby performing the different ash content TLA modified asphalt performance test results showed that the ash content of the TLA modified asphalt is within the range of 10.80% to 19.76%, and only ash content of 10.80%, the softening point was 53.6 ° C, does not satisfy the technical requirements. Meanwhile, with the increase in ash content, TLA modified asphalt the sense temperature performance, high temperature performance and resistance to deformation capacity indicators improved low temperature performance indicators decreased, anti-aging performance variation is inconsistent, this is mainly due to the ash making TLA modified asphalt performance due to the nature of the asphalt mastic, need to further examine the impact of the ash mixture performance. Therefore, it is recommended that the TLA modified asphalt low temperature and the aging performance evaluation should mainly through the test of the asphalt mixture. 3) the TLA modified asphalt mixture extraction test with the modified formula, which analyzed the ash segregation affecting the performance of the mix. Within the range of 10.00% to 20.00% ash content, respectively, 6 to 8 ash content TLA modified asphalt surface layer of AC-13C (TAC-13C) performance test, the results showed that 18.89% ash handling content, porosity, flow value and the residual stability of 5.3%, respectively, 4.11mm and 84.71%, respectively, does not meet the specification of technical requirements, the rest of the performance can meet the specification requirements. The same time, as the ash content increases, the Marshall indicators, high temperature stability, water stability and impermeability performance as a whole was the first superior-inferior trend changes, but no significant relationship between skid resistance and the ash content. 4) in accordance with the laws and ash of TLA modified asphalt ash settling TLA Modified Asphalt Mixture Performance test results the ash content of 40% TLA modified asphalt control range of 11.5% to 18.0%, the maximum allowed settling time 120min. At the same time, according to the ash content of 40% TLA modified asphalt control indicators, the the arbitrary ratio TLA modified asphalt ash control indicators. Thus, the combination of the ash control indicators and practical experience, respectively, from the control of the TLA modified asphalt indicators, production, transportation, use, and fit than five areas are summarized consider ash impact of TLA modified asphalt pavement construction proposals. In short, this paper TLA modified asphalt ash control indicators, as well as consider the ash affect the construction proposal for TLA modified asphalt pavement construction quality control to provide a reference for scientific and rational.
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