| Summary: | 碩士 === 中國科技大學 === 建築研究所 === 100 === Taiwan belongs to the subtropical regions, the environment is not conducive to the conservation of the external walls of buildings, water molecules penetrate the main cause for the weathering to produce, as the exterior walls of the protective measures should be based on external wall Water repellant, to block the water molecules to penetrate the building materials the damage done to reduce environmental damage on the external walls of buildings, exterior Water repellant to protect and prevent the sunshine to bring the aging effect, so that the life of the building to be extended, to be passed on to the next generation of sustainable buildings. However, there is a wide range of domestic Water repellant, domestic but no test for detection of the protective effect of various types of pharmaceutical and performance differences, resulting in the use of Water repellant, but failed to achieve the expected results, and worse anti failing to selection of appropriate reversal agent and accelerated aging, the motivation of this study for the Water repellant of weathering effects and performance differences for test analysis.
This study will be provided by the vendor five silicon dial of agent, as well as concrete, tiles, red bricks, the Guanyin rocks, granite, cypress 6 specimens, a total of nine parameters specimens, reference specifications and related literature is applied on the water absorption of the specimen for pharmaceutical, water repellency, weather resistance, breathability, qualitative analysis and other projects to test analysis, including absorbent, water repellency, air permeability is required through before and after the weathering test, analysis, and divided into material effects and pharmaceutical effects of the two effects do than explain.
By the qualitative test that the trial of five pharmaceutical characteristics of the allocation of water and five kinds of Pharmacy detected effective functional groups of organic unsaturated hydrocarbons, organic compounds than inorganic compounds more hydrophobic effect. unsaturated compounds allows the compound structure is more durable less susceptible to outside interference, so that through weathering test the performance of coated materials also retain Water repellant. Pharmacy A more suited to smear on the the Guanyin rocks (85 °), Pharmacy B is more suitable to be applied in the granite (93 °) and the red brick (112 °), Pharmacy C Xi Shizi the performance is acceptable, the Pharmacy D cypress (117 °) is excellent, Pharmacy E red brick (113 °) Pharmacy B on the data of red brick (112 °) is slightly superior, so the effect of Pharmacy E red brick is very excellent, while weathering after decreasing the amount also depends on the density of the material, the performance test data analysis and comparison can be allocated as a future building's exterior agent use and testing of reference, because the density of Pharmacy attached.
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