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Effect of natural pozzolan content on the properties of engineered cementitious composites as repair
Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 261-269 doi: 10.1007/s11709-017-0394-x
In order to determine the effect of Natural Pozzolan (NP) content on the mechanical properties and durability characteristics on Engineered Cementitious Composites (ECC) as repair material. This study focused on the evaluation of the most factors influencing compatibility between the repair material and the base concrete including mechanicals properties such as, compressive and flexural strengths, elastic modulus, capillary absorption and drying shrinkage. The experimental results showed that natural pozzolan reduces the compressive strength and the flexural strength of ECC at all ages. The elastic modulus of ECC was remarkably lower than that of normal-strength concrete. This lower Young’s modulus is desirable for repair concrete, because it prevents the stresses induced by restrained shrinkage. In addition, the incorporation of high-volume natural pozzolan decreases significantly the coefficient of capillary absorption at long term and increases the drying shrinkage. Generally, based on the results obtained in the present experimental investigation, ECC can be used effectively as an overlay material over existing parent concrete.
关键词: natural pozzolan engineered cementitious composites mechanical strengths elastic modulus capillary absorption drying shrinkage
Research on the theory and application of adsorbed natural gas used in new energy vehicles: A review
Zhengwei NIE,Yuyi LIN,Xiaoyi JIN
《机械工程前沿(英文)》 2016年 第11卷 第3期 页码 258-274 doi: 10.1007/s11465-016-0381-2
Natural gas, whose primary constituent is methane, has been considered a convincing alternative for the growth of the energy supply worldwide. Adsorbed natural gas (ANG), the most promising methane storage method, has been an active field of study in the past two decades. ANG constitutes a safe and low-cost way to store methane for natural gas vehicles at an acceptable energy density while working at substantially low pressures (3.5–4.0 MPa), allowing for conformable store tank. This work serves to review the state-of-the-art development reported in the scientific literature on adsorbents, adsorption theories, ANG conformable tanks, and related technologies on ANG vehicles. Patent literature has also been searched and discussed. The review aims at illustrating both achievements and problems of the ANG technologies-based vehicles, as well as forecasting the development trends and critical issues to be resolved of these technologies.
关键词: adsorbed natural gas (ANG) adsorbent adsorption theory conformable tank natural gas vehicles (NGVs)
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 86-98 doi: 10.1007/s11709-021-0793-x
关键词: plastic concrete sulfate resistance natural zeolite triaxial compression test SEM permeability
《能源前沿(英文)》 2023年 第17卷 第3期 页码 332-379 doi: 10.1007/s11708-023-0863-y
Accelerating the construction of natural gas system engineering in green smart cities
Xinhua MA
《工程管理前沿(英文)》 2019年 第6卷 第3期 页码 453-456 doi: 10.1007/s42524-019-0046-z
New nanostructured sorbents for desulfurization of natural gas
Lifeng WANG, Ralph T. YANG
《化学科学与工程前沿(英文)》 2014年 第8卷 第1期 页码 8-19 doi: 10.1007/s11705-014-1411-4
关键词: desulfurization natural gas desulfurization hydrogen sulfide sorbent amine-silica sorbent
Dehydration of natural gas and biogas streams using solid desiccants: a review
Soheil Bahraminia, Mansoor Anbia, Esmat Koohsaryan
《化学科学与工程前沿(英文)》 2021年 第15卷 第5期 页码 1050-1074 doi: 10.1007/s11705-020-2025-7
关键词: natural gas biogas dehydration adsorption solid desiccant
2019 highlights of the structural revision of natural product
Zongjia Chen, Mark A. Rizzacasa
《化学科学与工程前沿(英文)》 2021年 第15卷 第3期 页码 595-601 doi: 10.1007/s11705-020-1971-4
邱中建
《中国工程科学》 1999年 第1卷 第1期 页码 94-98
我国西部天然气资源十分丰富,占全国天然气总资源量的75%、探明储量的80%,已累计探明储量达13 110×108m3,西部地区已有能力长期稳定年外输气150×108m3。西气东输塔里木天然气有决定意义,目前正在评价的新发现的两个大型气田预计可迅速新增天然气探明储量约5 000×108m3。这些气田储量丰度大,单井产量高,采气成本低。东部长江三角洲地区经济发达,能源短缺,自给率仅为13%,目前能源消费构成中煤炭占76%,城市环境污染严重,是天然气消费的巨大市场。预计2010年天然气需要量253×108m3。西气东输有两个方案,一是塔里木气单独东输,开始年输量100×108m3,第八年开始增加至150×108m3;二是西部诸盆地联合东输,开始年输量150×108m3,第八年开始增加至230×108m3。两个方案均有经济效益,以联合东输方案优点较多。天然气在上海门站每立方米的销售价为1.2~1.3元,是很有竞争力的。项目一旦启动,对东部及西部地区均会带来巨大的好处。
《环境科学与工程前沿(英文)》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1368-0
• SMX was mainly degraded by hydrolysis, isoxazole oxidation and double-bond addition.
关键词: Sulfamethoxazole Ozonation Natural organic matters Secondary effluent Degradation mechanism
Influence factors on natural frequencies of composite materials
Bo WANG, Feng ZHAO, Zixu ZHAO, Kunpeng XU
《机械工程前沿(英文)》 2020年 第15卷 第4期 页码 571-584 doi: 10.1007/s11465-020-0592-4
关键词: composite material hammering and frequency sweep test structural parameter natural frequency
Mesoporous zeolites as efficient catalysts for oil refining and natural gas conversion
Jie ZHU, Xiangju MENG, Fengshou XIAO
《化学科学与工程前沿(英文)》 2013年 第7卷 第2期 页码 233-248 doi: 10.1007/s11705-013-1329-2
关键词: mesoporous zeolite catalysis oil refining natural gas conversion
Approach for natural gas to be a primary energy source in China
Weihe HUANG, Jindian CHEN, Chuan FU, Yan HUANG
《工程管理前沿(英文)》 2019年 第6卷 第4期 页码 467-476 doi: 10.1007/s42524-019-0068-6
关键词: natural gas energy revolution primary energy utilization areas approaching means
Current situation and future perspectives of European natural gas sector
Vincenzo BIANCO,Federico SCARPA,Luca A. TAGLIAFICO
《能源前沿(英文)》 2015年 第9卷 第1期 页码 1-6 doi: 10.1007/s11708-014-0340-8
关键词: natural gas natural gas market oil-linked contracts supply infrastructures gas hubs
Search for a natural scientific measure of economy
John E COULTER
《环境科学与工程前沿(英文)》 2011年 第5卷 第1期 页码 111-118 doi: 10.1007/s11783-011-0285-7
关键词: climate change financial crisis energy exergy environment
标题 作者 时间 类型 操作
Effect of natural pozzolan content on the properties of engineered cementitious composites as repair
Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR
期刊论文
Research on the theory and application of adsorbed natural gas used in new energy vehicles: A review
Zhengwei NIE,Yuyi LIN,Xiaoyi JIN
期刊论文
Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic
期刊论文
A review on technologies with electricity generation potentials using liquified natural gas regasification
期刊论文
Accelerating the construction of natural gas system engineering in green smart cities
Xinhua MA
期刊论文
Dehydration of natural gas and biogas streams using solid desiccants: a review
Soheil Bahraminia, Mansoor Anbia, Esmat Koohsaryan
期刊论文
Mechanisms for simultaneous ozonation of sulfamethoxazole and natural organic matters in secondary effluent
期刊论文
Influence factors on natural frequencies of composite materials
Bo WANG, Feng ZHAO, Zixu ZHAO, Kunpeng XU
期刊论文
Mesoporous zeolites as efficient catalysts for oil refining and natural gas conversion
Jie ZHU, Xiangju MENG, Fengshou XIAO
期刊论文
Approach for natural gas to be a primary energy source in China
Weihe HUANG, Jindian CHEN, Chuan FU, Yan HUANG
期刊论文
Current situation and future perspectives of European natural gas sector
Vincenzo BIANCO,Federico SCARPA,Luca A. TAGLIAFICO
期刊论文