scholarly journals Investigation on Aesthetic and Water Permeability of Surface Protective Material under Accelerated Weathering

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6896
Author(s):  
Feng Chen ◽  
Nguyen Xuan Quy ◽  
Jihoon Kim ◽  
Yukio Hama
Keyword(s):  
Water Permeability ◽  
Building Materials ◽  
Accelerated Weathering ◽  
Initial Value ◽  
Surface Color ◽  
Protective Material ◽  
Average Width ◽  
Ultrasonic Cleaning ◽  
Accelerated Weathering Test ◽  
The Aesthetic

In this paper, experiments were conducted on the effects of aesthetic and durability of three representative surface protective material under accelerated weathering test for 5000 h. First, the adaptability of the surface protective material coating to the substrate was proven by examining the aesthetic properties and the water permeability of the building materials. Second, the pollutant resistance of the surface protective material coating to artificial stain was assessed using xenon-arc light. The result shows that the appearance of the silane types did not change significantly, and the water permeability was improved. In addition, the silicate types did not improve water permeability and the surface color was changed. Fluor- resin types effectively improved the water permeability, but the surface color became dark. Sample measurements showed changes in the average width of the contamination after weathering, with an increase after spray cleaning and ultrasonic cleaning. However, it was observed that after washing the pollution average width of all specimens due to weathering at 5000 h was almost as much or smaller than the initial value.

scholarly journals Research on Planning and Design of Urban Architectural Color in Changchun

2020 ◽  
Vol 165 ◽  
pp. 04029
Author(s):  
Zhang Cui
Keyword(s):  
Creative Thinking ◽  
Building Materials ◽  
Design Guidelines ◽  
The Other ◽  
New Era ◽  
Color Design ◽  
Planning And Design ◽  
Surrounding Environment ◽  
The Aesthetic

Architecture is the soul of city color. The planning focus of city color is city architecture, especially the planning control of the main wall color of street buildings. The design of architectural color should not only consider the surrounding environment of the building, the content of the building and the building materials, but also proceed from the aesthetic needs and conform to the principle of color engineering. On this basis, the plan proposes color design guidelines and relies on scientific and standardized “urban building color design guidelines” to achieve the purpose of maintaining the original appearance of history and creating a new era style. Besides the traditional buildings, the other “architectural color guidelines” should leave more room for manoeuvre and not restrict the creative thinking of architects.

Surface roughness and color characteristics of wood treated with preservatives after accelerated weathering test

2005 ◽  
Vol 250 (1-4) ◽  
pp. 35-42 ◽  
Author(s):  
Ali Temiz ◽  
Umit C. Yildiz ◽  
Ismail Aydin ◽  
Morten Eikenes ◽  
Gry Alfredsen ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Accelerated Weathering ◽  
Color Characteristics ◽  
Accelerated Weathering Test

Ethylene Glycol Accelerated Weathering Test: An Improved, Objective Aggregate Durability Test Method

2017 ◽  
Vol 2655 (1) ◽  
pp. 27-35
Author(s):  
Petrus G. L. van Blerk ◽  
Enrico Fletcher ◽  
Seosamh B. Costello ◽  
Theuns F. P. Henning
Keyword(s):  
Ethylene Glycol ◽  
Clay Minerals ◽  
Road Construction ◽  
Test Methods ◽  
Test Method ◽  
Accelerated Weathering ◽  
Visual Interpretation ◽  
Durability Test ◽  
Spalling Fracture ◽  
Accelerated Weathering Test

Ethylene glycol has been used extensively by the concrete and road construction industries to identify rock durability issues associated with smectite clay minerals. The presence of these clay minerals is synonymous with rock degradation under normal environmental wetting and drying cycles. However, such historical test methods are predominately based on a subjective visual interpretation, describing the observed degradation of individual rock pieces at fixed time intervals during the soaking process. In addition, some test methods include complex equations with multiple weighting factors applied to nominated degradation descriptors (e.g., spalling, fracture, and disintegration) used to calculate a single durability indicator. This paper describes the development and implementation of an alternative, nonsubjective accelerated weathering test that also uses ethylene glycol. The research included metamorphic and volcanic rock types used extensively in New Zealand for road construction. The greatest benefit of the proposed new test method is the ability to eliminate the subjective visual assessment described in historical test methods and adequately quantify results to specify contractual acceptance and rejection criteria. The test method also shows that good repeatability is possible from duplicate test samples. However, rock quality and quarry production consistency will influence the ability of the test method to report the same “percentage change in fines” over a prolonged test period. This phenomenon was particularly evident with problematic and lower quality rock. The test findings are well supported by observed field performance, thus giving confidence in the new method’s usefulness.

scholarly journals Study on Strength and Permeability of Silt Soils Improving by Tung Oil and Sticky Rice Juice

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Xiao-Wu Tang ◽  
Yue Yu ◽  
Li-Pei Zhou ◽  
Min-Liang Fei ◽  
Guo-Ping Sun
Keyword(s):  
Building Materials ◽  
Color Change ◽  
Color Contrast ◽  
Mass Ratio ◽  
Treated Soil ◽  
Tung Oil ◽  
Direct Shear Tests ◽  
Mass Ratios ◽  
Shearing Strength ◽  
The Aesthetic

Tianluoshan site (5000∼2500 BC), which belongs to the Hemudu culture, has suffered damages from the hydraulic effect like other Chinese earthen sites in moist circumstance. Tung oil and sticky rice juice, as Chinese traditional building materials, were chosen as the additives in this study. Tung oil has the property of good waterproofness, fast dry-up, and quick film-forming by oxidation. Sticky rice juice has the advantage of high glutinousness, good tenacity, and low expandability. The study is to figure out the best performing mixture of tung oil and sticky rice juice to decrease the permeability of soil and increase its strength to facilitate excavations at archeological sites enlarging the display of layers of cultures. Meanwhile, the color of the site soil after reinforcement must be maintained for a long time. From the direct shear tests and the falling head test of 9 specimens mixed in different mass ratios, it was confirmed that the optimal mass ratio of the tung oil, the sticky rice juice, and the soil was 5 : 10 : 85. The treated soil specimen of the optimal mass ratio had the largest increment of shearing strength. The self-standing height of the vertical soil wall increases correspondingly from 2.63 m to 6.18 m, which could enlarge the step height when excavating a deep earthen site and extend the display height at the protection stage. The treated soil at the optimal mass ratio also showed the largest decrement of permeability coefficient from 1.257 × 10−5 cm/s of the untreated soil to 1.627 × 10−6 cm/s, which could reduce the hydraulic effect to the soil. The microstructures of the 9 specimens in different mass ratios were observed by SEM. The results showed that the glutinousness of sticky rice juice could cohere soil particles together, and the tung oil could then form oxidation film wrapping around the particle groups. In order to meet the aesthetic requirements of earthen sites conservation, the surface color contrast tests were used to measure the color change induced by the two additives. The surface contrast tests showed that the treated soil at the optimal mass ratio had the minimum variation of the surface, which could satisfy the basic requirements of earthen sites protection.

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