The main purpose of UV aging test of road asphalt is to evaluate its weather resistance and performance stability to determine its service life and performance performance in outdoor environment. Uv aging test can simulate the effect of UV radiation in sunlight on road asphalt.

Pagtatasa ng paglaban sa panahon: Road asphalt is exposed to outdoor environments and can be affected by UV rays, pagbabago ng temperatura, kahalumigmigan, atmospheric chemicals, at iba pang mga kadahilanan. Uv aging tests can simulate these factors to evaluate the weatherability of road asphalt under actual use conditions.

Assessing performance stability: UV radiation can adversely affect the chemical composition and physical properties of road asphalt, tulad ng pagbabago ng kulay, hardening, pagtanda, pag crack na, and deformation. Sa pamamagitan ng UV aging test, the performance stability of road asphalt can be evaluated, and whether its performance degradation, damage or failure will occur in long-term use can be understood.

Gabay na pagpili ng materyal at pag optimize ng pagbabalangkas: Sa pamamagitan ng mga resulta ng UV aging test, the performance changes of road asphalt under UV radiation can be understood, upang maging gabay sa pagpili, formulation optimization and improvement of road asphalt materials to improve its weather resistance and performance stability.

Ensure quality control: By conducting UV aging tests, the quality of road asphalt can be controlled and verified to ensure that it meets relevant quality standards and specifications.

Prediction of life and maintenance cycle: The service life and maintenance cycle of road asphalt can be predicted through UV aging tests and related assessments, providing a basis for road planning, maintenance and repair.

Through UV aging tests, important information about the weather resistance and performance stability of road asphalt in exposed environments can be provided, which helps to ensure that road asphalt can maintain its function and performance in various climatic conditions for a long time and provide a safe and smooth road driving experience.

This paper analyzes the application of UV aging resistance test chamber in road asphalt

Mga pamantayan ng industriya
The UV aging test of road asphalt usually requires reference to the following industry standards:

ASTM D4799: Standard test method for evaluating weather resistance of road asphalt, including UV aging test.

AASHTO T245: The American Association of Interstate Highway Traffic Officials (AASHTO) standard test method for the weather resistance of road asphalt, including UV aging test.

EN 12607-5: European standard issued by the European Organization for Standardization (CEN) on the testing of road bitumen and asphalt mixtures, which relate to UV aging testing.

JIS K 7350-4: Pamantayang Pang industriya ng Hapon (JIS) standard for testing asphalt and asphalt mixtures for road use, kasama na ang UV aging tests.

AS 2341.13: Australian standard issued by the Standards Institute of Australia (SAI Global) on the testing of road asphalt materials and asphalt mixtures, which involves UV aging testing.

Note that the exact standard requirements may vary depending on the location, industry, and specific product needs. Kaya nga, before conducting UV aging tests for road asphalt, the applicable standards and specifications should be carefully read and followed to ensure the accuracy and comparability of the tests. Bukod pa rito, different countries and regions may have specific highway sector standards and specifications, which should also be considered in the test.

Application Cases
The following are some specific application cases of UV aging test of road asphalt:

Weather resistance evaluation: UV aging test can be used to evaluate the weather resistance of road asphalt, including changes in color, tigas na tigas, mga bitak sa ibabaw, deformation and other aspects. This helps to determine the stability and durability of road asphalt under long-term exposure to UV radiation and other environmental factors.

Color stability: UV aging test can simulate UV radiation in sunlight to evaluate the color stability of road asphalt. By observing the degree of color change, it can be determined whether the road asphalt will have the problem of color fading or yellowing under different environmental conditions.

Physical property change: UV aging test can detect the physical property change of road asphalt, such as hardness, bending property, crack resistance and so on. This helps to assess whether road asphalt becomes brittle, prone to cracking or deforming under UV radiation.

Chemical composition change: UV aging test can detect the change of chemical composition in road asphalt, such as polymer content, asphalt quality change, atbp. The chemical stability and durability of road asphalt under UV radiation can be understood by analyzing the changes in chemical composition.

Maintenance cycle assessment: The service life and maintenance cycle of road asphalt can be predicted by UV aging tests and related assessments. This helps to develop a reasonable maintenance plan, timely road repairs and updates, and improve the durability and safety of roads.

These application cases demonstrate the important role of UV aging tests in assessing the weather resistance and performance stability of road asphalt. By understanding the performance changes of road asphalt under UV radiation, corresponding measures can be taken to improve the quality and life of roads and ensure their reliability and safety.

This paper analyzes the application of UV aging resistance test chamber in road asphalt

Paraan ng pagsubok
The following are the steps and precautions for testing the aging resistance of asphalt pavement using UV aging test chamber under normal circumstances:

Halimbawa ng paghahanda: Select appropriate bitumen samples for testing as required. Asphalt specimens can be used or asphalt can be applied to the test plate.

Setting ng kondisyon ng pagsubok: ayon sa mga kinakailangang kondisyon ng pagsubok at pamantayan kinakailangan, itakda ang mga parameter ng UV aging test chamber, kasama na ang radiation intensity, temperatura, kahalumigmigan, atbp. Tiyakin na ang silid ng pagsubok ay naka set up alinsunod sa mga kaugnay na pagtutukoy at mga kinakailangan.

Halimbawa ng paglalagay: Place the asphalt sample on the sample rack inside the test chamber to ensure that the sample is smooth, walang bula at wrinkles, and to avoid mutual interference between samples.

Test run: Start the UV aging test chamber and expose the sample to UV radiation under the set conditions. Ayon sa mga pamantayang kinakailangan, itakda ang angkop na oras ng pagsubok, karaniwang daan daang hanggang libu libong oras.

Regular na pagmamasid: Regular observation of bitumen sample changes, kasama na ang mga pagbabago sa kulay, nagbabago ang tigas, mga bitak sa ibabaw, deformation, atbp. Itala ang anumang nakikitang pagbabago o pinsala.

Katapusan ng pagsusulit at pagsusuri: Sa pagkumpleto ng pagsusulit, sample ay inalis para sa pagsusuri at pagsubok. The physical and chemical properties of asphalt samples can be tested to determine their aging resistance.

This paper analyzes the application of UV aging resistance test chamber in road asphalt

Kapag nagsasagawa ng UV aging test, dapat ding pansinin ang mga sumusunod na bagay:

Tiyakin na ang mga kagamitan ng UV aging test chamber ay gumagana nang maayos, at gumana ayon sa manwal ng operasyon at mga kinakailangan sa kaligtasan.

Suriin at itala ang temperatura, kahalumigmigan, radiation intensity at iba pang mga parameter ng silid ng pagsubok upang matiyak ang katatagan at katumpakan nito.

Tiyakin ang pagpili ng sample, paghahanda at paglalagay alinsunod sa mga pamantayan at kinakailangan.

Suriin at panatilihin ang mga kagamitan sa silid ng pagsubok nang regular upang matiyak ang normal na operasyon at katumpakan nito.

Mag ingat upang obserbahan at itala ang anumang mga pagbabago sa sample sa panahon ng pagsubok para sa kasunod na pagsusuri at pagsusuri.

Please note that the exact test methods and operating procedures may vary according to the standards and specific test requirements, so read the relevant standards carefully and follow the correct test procedures before performing UV aging tests.