scholarly journals A Study of Weather Resistance on Dancheong Ground Treatment of Tranditional Wooden Building in Korea

2019 ◽  
Vol 35 (5) ◽  
pp. 480-493
Author(s):  
Young Kyun Kim ◽  
Kyeong Soon Han
Keyword(s):  
Ground Treatment ◽  
Weather Resistance

DOCOL 700W

Alloy Digest ◽  
2010 ◽  
Vol 59 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Yield Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Resistance ◽  
Bend Strength ◽  
Weather Resistance

Abstract Docol W steels are weather resistant during outdoor use. These steels are designated according to their lowest yield strength. In addition to its weather-resistance properties, Docol W steels are characterized by high resistance to impact and wear, good formability, and weldability. This datasheet provides information on composition, physical properties, tensile properties, and bend strength. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SA-616. Producer or source: SSAB Swedish Steel Inc.

scholarly journals The study of rod-shaped TiO2 composite material in the protection of stone cultural relics

2020 ◽  
Vol 9 (1) ◽  
pp. 359-365
Author(s):  
Hui Shu ◽  
Yujian Song ◽  
Qiang Liu ◽  
Maobin Luo
Keyword(s):  
Photocatalytic Performance ◽  
Acid Resistance ◽  
Uv Resistance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Morphology ◽  
Excellent Photocatalytic Activity ◽  
Stone Culture ◽  
Weather Resistance ◽  
Cultural Relics

AbstractTiO2 has many advantages, such as UV resistance, thermal stability, and antibacterial; the attention toward TiO2 composite materials (TCMs) is rapidly increasing in the protection of stone culture relics. An innovative rod-shaped TCM was synthesized in this study. The structure and morphology of TCM were studied by X-ray diffraction and scanning electron microscopy. The acid resistance, weather resistance, hydrophilicity, and photocatalytic performance of TCM had been investigated. The experimental results indicated that TCM has good protection effects. The stone sample treated with TCM has stronger acid resistance and weather resistance, better hydrophilicity, and more excellent photocatalytic activity compared with the untreated stone. More importantly, the stone treated with TCM has better acid resistance and weather resistance than that treated with normal shaped TiO2 materials of the previous study. This work describes an effective way to protect stone cultural relics.

Natural Aging Test for CF3011/BA9916-II Composite in Marine Environment

2014 ◽  
Vol 633-634 ◽  
pp. 408-412
Author(s):  
Xu Liu ◽  
Li Wang ◽  
Wu Jun Huo ◽  
Yue Liang Chen ◽  
Yuan Ling Lei
Keyword(s):  
Marine Environment ◽  
Moisture Absorption ◽  
Natural Aging ◽  
Plastic Behavior ◽  
Test Results ◽  
Aging Test ◽  
Interlaminar Shear ◽  
Weather Resistance ◽  
Carbon Fiber Epoxy ◽  
Marine Climate

Abstract: A form of static coupon following the boat was developed to carry the natural aging test for CF3011/BA9916-II composite in marine environment, and the weather resistance of composite in marine climate was studied. The changes of the morphology of the composite were observed, the changes of the quality ,tensile strength and interlaminar shear strength for specimen were analyzed, and the aging regulation was studied combining with the mechanism of hygrothermal aging for carbon fiber epoxy composite. The test results showed that with the aging time increasing, the moisture absorption of the composite increased, the mechanical strength decreased , and the plastic behavior of the material was showed.

scholarly journals Modified Lime Binders for Restoration Work

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 98
Author(s):  
Valentina Loganina ◽  
Kristina Sergeeva ◽  
Roman Fediuk ◽  
Sergey Klyuev ◽  
Nikolai Vatin ◽  
...  
Keyword(s):  
Storage Time ◽  
Infrared Spectrometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Gain Rate ◽  
Calcium Silicate Hydrates ◽  
Restoration Work ◽  
Weather Resistance ◽  
Kinetics Of ◽  
Mixing Water

Lime mixes are the primary material for restoration work in historic buildings. The research object of this study is modifying lime binders with specially synthesized calcium silicate hydrates (CSHs). This study aimed to improve lime render mixes’ weather resistance. The following factors were considered: the density of the liquid glass, the amount of the precipitating additive, the rate of introduction of the precipitating additive, the drying mode of the precipitate, and the storage time of the precipitate. The research methods were X-ray diffraction analysis, differential thermal analysis, Fourier transform infrared spectrometry, and optical and electron microscopy. It was revealed that lime compositions with CSH have a higher strength gain rate than the control compositions. A mathematical model of the kinetics of hardening a lime composite based on a binder filled with CSH was obtained. The regularities of the change in the lime composite’s strength depending on the filler grinding’s fineness, its content, and the amount of mixing water have been established. It was revealed that the introduction of CSH into the lime composition increases the weather resistance of facade lime mixtures by reducing the porosity and increasing the volume of closed pores of the composite.

Weather Resistance of Cellulose Ester Plastic Compositions.

1945 ◽  
Vol 37 (3) ◽  
pp. 232-239 ◽  
Author(s):  
L. W. A. Meyer ◽  
W. M. Gearhart
Keyword(s):  
Cellulose Ester ◽  
Weather Resistance

Microbial ecology of untreated and copper–chrome–arsenic treated stakes exposed in a tropical soil. 1. The initial invaders

1972 ◽  
Vol 18 (12) ◽  
pp. 1923-1931 ◽  
Author(s):  
H. Greaves
Keyword(s):  
Microbial Ecology ◽  
Early Stage ◽  
Initial Period ◽  
Trichoderma Viride ◽  
Untreated Wood ◽  
Soft Rot ◽  
Eucalyptus Regnans ◽  
Ground Treatment ◽  
Colonization Period ◽  
Copper Chrome Arsenic

A study of the microbial ecology of copper–chrome–arsenic treated and untreated Pinus radiata and Eucalyptus regnans sapwood ground stakes exposed for a total of [Formula: see text] years is currently being made. The results presented in this report cover the initial colonization period during the first 7 months of exposure. Soft rot in the outer layers of both species of untreated wood occurs after only 1 month in the ground. Treatment with CCA prevents the early attack of pine but is not as effective in the eucalypt, nor does it appear to have a significant effect upon the diversity of microorganisms which colonize the two woods. For the first 2 months Penicillia are the predominating members of the population. Trichoderma viride, Paecilomyces fumo-roseus, and Cladosporium spp. are also frequently isolated. At 4 months more active soft-rotting fungi can be isolated, e.g. Chaetomium globosum and Humicola grisea, together with Fusaria and Phycomycetes. Bacteria colonize the stakes at a very early stage, the population changing little over this initial period of the study. Actinomycetes were not isolated until the wood had been in the ground for a month or more after which their importance in the population has steadily increased. Basidiomycetes were microscopically observed in sections of the stakes but have not been isolated to date.

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