5 results about "Asphalt concrete" patented technology

The invention discloses an asphalt regenerating agent with a modification function. The asphalt regenerating agent is prepared from the following components in parts by mass: 30-60 parts of light base oil, 20-35 parts of a modification functional component, 5-20 parts of a stabilizing balancing component, 2-15 parts of a penetration enhancing component, 2-10 parts of a dispersing component and 1-10 parts of a flow regulating component by mass. The asphalt regenerating agent has the advantages of improving the simplex component restoring mechanism of the conventional regenerating agent, integrating a regenerating process and a modification process, and on the basis that the ordinary regenerating agent restores the flexibility of aged asphalt, further improving the viscoelasticity and temperature stability of the asphalt, so that a new idea is provided for high-efficiency, recycling and large-scale application of waste asphalt concrete in China, and economic, environmental and social benefits are remarkable.

The invention discloses a calculation method for asphalt and aggregate stripping rates of an asphalt pavement. The method comprises the following steps: 1) a water boiling method is used for treatingan aggregate wrapped with asphalt, and the asphalt stripping rate of the aggregate wrapped with the asphalt after water boiling is calculated; 2) a water damage sensitivity tester is used for simulating a real water damage mode of the pavement, the asphalt stripping rate of the aggregate wrapped with the asphalt after dynamic water damage is calculated, the stripping rate after the dynamic water damage treatment and the stripping rate after the water boiling are fitted, and a relation between the asphalt stripping rates after the dynamic water damage and the water boiling damage is obtained; and 3) the actual damage life of the asphalt pavement is calculated by utilizing the temperature, the pressure and the frequency of the water damage sensitivity tester, and the asphalt and aggregate stripping rates of the actual pavement in different years are calculated. The asphalt and aggregate stripping rates of the asphalt concrete pavement in the different years are calculated through the water boiling method; the quantitative calculation is carried out; and the operation is convenient, the cost is low, the reliability of a test result is high, and the engineering practice of the pavementis met.

The invention provides an asphalt concrete construction method for preventing wind and sand by utilizing a filling height difference between a dam body and a core wall. The method is characterized inthat a certain height difference is generated by utilizing the speed of a self-filling area during dam body filling under a strong wind weather condition. Paving of the dam shell material is ahead ofpaving of the asphalt concrete core wall and a transition material, so the paving heights of an upstream dam shell material and a downstream dam shell material are higher than those of the transitionmaterial and the asphalt concrete core wall; and a dam crest construction section is changed from a plane to a concave surface, so that the asphalt concrete core wall is constructed at the bottom of the concave surface, the dam filling height and the asphalt core wall filling height synchronously rise, and a temporary wind-shield wall structure is formed. The independently researched and developedasphalt concrete construction technology for preventing wind and sand by utilizing the filling height difference between the dam body and the core wall improves the wind prevention effect of the asphalt concrete core wall under the strong wind condition and accelerates the construction progress,