http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Erhui Guo (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Permeability and cracking of compacted clay liner improved by Nano-SiO2 and sisal fiber
Gao-LiangTao,Erhui Guo,Jinghan Yuan,Qing-Sheng Chen,Sanjay Nimbalkar 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.12
The landfill liner is the last line of defense to protect the soil from damage, but it is difficult to satisfy both impermeability and crack resistance requirements with conventionally compacted clay. This paper proposes a new composite material to enhance the anti-seepage and anti-cracking properties of clay as a solution to this problem. In this Study, the effects of two single amendment materials, Nano-SiO2 (6 dopings) and sisal fiber (SF) (4 dopings), and a composite amendment material (Nano-SiO2+SF), on the permeability and cracking resistance of the improved clay were investigated by infiltration tests and dry-wet cycle tests, respectively. The nuclear magnetic resonance test (NMR) test reveals the microscopic pore changes of soil and explore the reinforcement mechanism. The findings of penetration experiments demonstrate that Nano-SiO2 and SF, both single and composite components, can increase the modified clay's impermeability. The optimum content of Nano-SiO2 is 3%, and its permeability coefficient is 5.09 × 10−8 cm·s−1, which is two orders of magnitude lesser than that of virgin soil. The results of three dry and wet cycle tests showed that the overall trend of fracture length and cracking factor (CIF) increased with the increase of the number of de-wetting. After the third de-wetting of the modified clay, 0.75% Nano-SiO2 + 0.3% SF is the optimal dose, which reduces the fissure length by 19.94 times and CIF by 27.25 times compared with the three de-wetting of the plain clay. As a whole, the data demonstrates that the composite Nano-SiO2 and SF are able to make up for the shortcomings of each component. It can simultaneously improve the anti-seepage and anti-cracking properties of the enhanced clay. The test results provide a certain benchmark for the impermeability and anti-cracking of landfill liners.
-
Shan Jiang,Ce Cui,Weijie Wang,Erhui Ren,Hongyan Xiao,Mi Zhou,Jinzhong Tang,Cheng Cheng,Ronghui Guo 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
Multifunctional flexible conductive materials have attracted significant attention as next-generation portablewearable electronics. However, designing robust electronics fabrics with high-performance electromagnetic interference(EMI) shielding and reliable use in all-weather environments remains a challenge. Herein, a practical and optimizedmethodology was provided to achieve surface metallization of insulating fabrics for conductive devices. The Ag seeds weresuccessfully embedded on the surface of viscose nonwovens as catalytic centers, and ammonia-free silver plating was carriedout at room temperature. Subsequently, the Ag-wrapped fabric was impregnated with 1-octadecanethiol so that the surface ofthe obtained fabric showed super-hydrophobicity and water contact angle can reach 152.3 °. The Ag/viscose exhibitsultrahigh conductivity (up to 538 S/cm) and the EMI shielding effectiveness (SE) reaches as high as 94.1 dB in the range of1-18 GHz. The obtained Ag/viscose possesses outstanding waterproof, strong mechanical durability, excellent Joule heatingeffect and antibacterial, which can be potentially applied for multifunctional wearable electronics and smart clothing.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
