| As China's rapid development of high-grade highway, accounted for the majority of the asphalt pavement of the damage became the focus of attention. Pavement damage, mostly due to the infiltration of water, coupled with the vehicle load and the interaction of esnvironmental factors, the road lesading to the destruction of the structure, such as tracks, cracks and pits, and other diseases. These diseases on the traffic of comfort and security have had very serious implications, not to be ignored. Asphalt pavement voidage and permeability of water into the road is the key factor. Therefore, it is very meaningful that research voidage and permeability of asphalt mixture road performance of the impact, considering the northeast quarter of the frozen areas of special environmental features.In this paper, in view of the northeast quarter of the actual environment to freeze the situation, learn from and summed up the domestic and international advanced experience and test methods, from the asphalt mixture of the voidage and permeability and comprehensive consideration of environmental factors, researching Voidage permeable asphalt pavement on the road performance of the impact. Hope through this research work, to the asphalt pavement design and construction to provide a basis for guiding. This study mainly in the following areas:First, the small study sample Marshall voidage and compaction of the relationship between the number on board track specimen and the voidage of the number of RCC, forming three small voidage of the Marshall samples and specimens track board; Secondly, through the two methods were measured on the Marshall samples and specimens of the Rut-permeability coefficient, permeability and voidage of the relationship; Third, at room temperature, freezing and thawing and freezing cycle of three different conditions, different voidage and permeability of the asphalt mixture of water affect the stability of the situation; Fourth, at room temperature, freezing and thawing and freezing cycle of three different conditions, different voidage and permeability of the high-temperature asphalt mixture stability of the situation; Fifth, at room temperature, freezing and thawing and freezing cycle of three different conditions, different voidage of the asphalt mixture bending undermine the impact; Sixth, the determination of asphalt mixture of residual water, asphalt mixture that is saturated after the evaporation of water situation.The main content of this test is voidage and permeability of asphalt mixture road performance of the impact of the situation, the raw materials and to meet than the test used in Dunhua mixing station laboratory is the raw data. The asphalt of the test were the penetration, and the extension of the three major indicators of softening point, the test results are in line with regulatory requirements. Aggregate test is divided into coarse aggregate, fine aggregate, slag and Hydrated Lime tests. Coarse aggregate of the test were less than 0.075mm particle content, the apparent relative density, water absorption, needle Flake particle content, robustness, Los Angeles attrition rates, crushing the value and the adhesion of asphalt, and other indicators, test results Comply with regulatory requirements. Fine Aggregate test were the apparent determination of the relative density, and angular equivalent of sand, and other indicators, the test results are in line with regulatory requirements. Sp test were measured slag screening, the apparent density, water content, such as hydrophilic coefficient indicators, the test results are in line with regulatory requirements. Hydrated Lime tests were measured Hydrated Lime screening, the apparent density, water content, such as Hydrated Lime purity test, the test results are in line with regulatory requirements. The test used by the asphalt Mixture for the AC-20C type in value, adding 3.5 percent and the SP, 1.5 percent of the Hydrated Lime and more than 1 percent of the screen. Asphalt is the best amount of bulk density, voidage, saturation, stability, the flow rate of value and space targets identified as 4.8 percent.The need to produce three test of asphalt mixture sample, were on the Marshall small specimen, tracks and trabecular plate specimen samples. Small specimen with Marshall compaction of molding, tracks specimen with RCC board of molding, trabecular specimen with rutting from cutting board specimen. Marshall is a small sample-is by changing the number to get a different voidage, rutting plate specimen is by changing the number of RCC to get a different voidage, trabecular is different voidage of the rutting cutting board to get different Voidage. Three specimens molding, dry table with three samples of the apparent relative density, and then vacuum measured mixture of theoretical maximum relative density, to seek voidage. Seepage pressure for use with a special mold of small samples of the Marshall permeability coefficient, used to measure the water seepage road tracks plate specimen penetration coefficient. Evaluation of voidage and permeability of the asphalt mixture of water stability of the impact of the testing method used is split test. Evaluation of voidage and permeability of the high-temperature asphalt mixture stability of the impact of the testing method used is the test of tracks. Evaluation of voidage and permeability of the asphalt mixture bending undermine the impact of the testing method used is the trabecular bending test. Residual water is used in electronic scales from time to time to conduct a survey.Through the analysis of the findings of the trial, received some valuable conclusions: By compaction number and frequency of the respective control of small RCC Marshall samples and specimens of the board tracks voidage, with the voidage and compaction number of RCC increased with the increase of the number, compaction and Fun Days for the RCC on trial Of a greater impact on the voidage, with the increase in the number of the voidage of the impact of gradually decreased. The relationship of voidage and permeability coefficient is that the increase of voidage, permeability coefficient also increased, reaching a certain fixed value, the decrease of voidage, permeability coefficient also decreased, near zero. Asphalt mixture on the permeability and voidage of the asphalt pavement great impact on road performance, with the voidage and permeability coefficient increased, asphalt mixture of water stability, high temperature stability and bending destruction are different levels of capacity reduction. At room temperature, freezing and thawing and freezing cycle of three, under the conditions of freezing the worst road performance, poor conditions of freezing and thawing, under normal temperature conditions better. The road after the rain, water infiltrated into the internal road, the road voidage and permeability coefficient is the more water infiltration, the greater the rate of saturation. With the passage of time, the residual water in the role of the road for a long time, difficult to clean evaporation.
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