Research On Buton Rock Asphalt (BRA) Performance

In recent years, as China's economic construction takeoff, highway construction has entered the peak period, due to the occurrence of three Chao phenomenon, more and more modifier has aroused our attention; As a natural rock asphalt modifier - Buton rock asphalt (BRA), is its excellent road performance and low price was the industry's attention. Many of the scholars at home and abroad Buton rock asphalt (BRA) of the formation mechanism, matrix laboratory performance, mixture test performance, road performance, and so were studied; But less than that, not as a new material, in-depth study is not enough. This article is from this perspective, to the Ministry of western rock asphalt projects and Beijing tianhejiaye Trading Company Buton rock asphalt (BRA) based on scientific research projects in light of the current research results, by comparing test-launched Buton Performance of asphalt.In this paper, the main means of research is by contrast tests, including laboratory tests and field trials in two parts, on the asphalt Buton rock matrix test performance, physical, chemical composition analysis, the high-temperature asphalt mixture performance, low-temperature performance and stability of water, Substantial projects and test appearance observation for analysis. In contrast course of the study, this combination of existing research results, performance against Buton rock asphalt has conducted in-depth, comprehensive study. In contrast course of the study, this paper, the relevant literature Buton rock asphalt on asphalt little effect on different media raised questions about that through pilot studies: Buton rock asphalt on the base asphalt is a different impact on different.In this paper, the conclusions and consensus:1) BRA can be a very good base asphalt improve the stability of high temperature;2) BRA matrix of the low-temperature asphalt crack resistance of the increase is not obvious, but can a reasonable level with improving the effectiveness of a design;3) BRA on Matrix Asphalt stability of the water have increased, but a reasonable level can be designed with better results;4) BRA base asphalt on a different impact on different levels;5) BRA and similar modification of a more cost-effective than advantages , Should be vigorously promoted.At the same time, the paper also combine properties of the academics and related research results, made a preliminary BRA-modified asphalt mixture of asphalt technical requirements and applicable regional, economic and made a comparative analysis.In this paper, draw the final conclusion is: Buton rock asphalt (BRA) as a new modified materials, with its cost-effective, should be vigorously promoted.