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Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1400-1414 doi: 10.1007/s11709-021-0779-8
关键词: aggregates non-destructive testing sand-to-aggregate volume ratio (s/a) maximum aggregate size (MAS)
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 754-772 doi: 10.1007/s11709-021-0711-2
关键词: sea sand recycled aggregate concrete recycled coarse aggregate replacement percentage sea sand chloride ion content long-term mechanical properties stress–strain curve
Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA
《结构与土木工程前沿(英文)》 2022年 第16卷 第11期 页码 1453-1473 doi: 10.1007/s11709-022-0877-2
关键词: manufactured sand fresh concrete microfines admixtures shrinkage cracking
Jingwei YING; Feiming SU; Shuangren CHEN
《结构与土木工程前沿(英文)》 2022年 第16卷 第3期 页码 302-315 doi: 10.1007/s11709-022-0803-7
关键词: recycled concrete beam the replacement rate of recycled coarse aggregate water–cement ratio digital image correlation
杨俊,杨志,张国栋,唐云伟,陈红萍
《中国工程科学》 2014年 第16卷 第2期 页码 73-78
本文通过室内无荷膨胀率试验,对宜昌市某一级公路改建工程项目路段的膨胀土进行了研究。重点分析了无荷膨胀率与时间、掺砂比例、初始干密度之间的关系,试验研究表明:无荷膨胀变形主要分为快速膨胀、减速膨胀和最终稳定3 个阶段;在初始干密度一定时,风化砂改性土的无荷膨胀率会随着掺砂比例的增大先迅速降低然后缓慢降低,风化砂改性土的无荷膨胀率对较大的掺砂量不敏感;在相同的掺砂比例下,风化砂改性土的无荷膨胀率随着初始干密度的增大会迅速增大,它们之间有很好的线性相关性,膨胀土在进行路基填筑时,控制初始干密度有助于减小其膨胀变形,保证路基填土的稳定性。
Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting
John O’MALLEY, Hakim S. ABDELGADER,
《结构与土木工程前沿(英文)》 2010年 第4卷 第1期 页码 127-132 doi: 10.1007/s11709-010-0007-4
Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG
《能源前沿(英文)》 2019年 第13卷 第3期 页码 483-493 doi: 10.1007/s11708-019-0631-1
关键词: marine engine natural gas methane turbulent jet ignition (TJI) pre-chamber
An improved algorithm for McDowell’s analytical model of residual stress
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 150-155 doi: 10.1007/s11465-014-0295-9
The analytical model for two-dimensional elastoplastic rolling/sliding contact proposed by McDowell is an important tool for predicting residual stress in rolling/sliding processes. In application of the model, a problem of low predicting precision near the surface layer of the component is found. According to the volume-constancy of plastic deformation, an improved algorithm for McDowell’s model is proposed in order to improve its predicting accuracy of the surface residual stress. In the algorithm, a relationship between three normal stresses perpendicular to each other at any point within the component is derived, and the relationship is applied to McDowell’s model. Meanwhile, an unnecessary hypothesis proposed by McDowell can be eliminated to make the model more reasonable. The simulation results show that the surface residual stress predicted by modified method is much closer to the FEM results than the results predicted by McDowell’s model under the same simulation conditions.
关键词: residual stress McDowell’s model volume-constancy of plastic deformation FEM elastoplastic rolling/sliding contact
Wentao WANG, Chongzhi TU, Rong LUO
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 568-576 doi: 10.1007/s11709-017-0444-4
关键词: sand embankment compaction in large thickness numerical simulation small size vibratory roller steady compaction
Unified description of sand behavior
Feng ZHANG, Bin YE, Guanlin YE
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 121-150 doi: 10.1007/s11709-011-0104-z
关键词: constitutive model sand stress-induced anisotropy density structure
Recovery of free volume in PIM-1 membranes through alcohol vapor treatment
Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo
《化学科学与工程前沿(英文)》 2021年 第15卷 第4期 页码 872-881 doi: 10.1007/s11705-020-2001-2
关键词: polymer of intrinsic microporosity (PIM) PIM-1 physical aging gas separation vapor-phase regeneration
Influence of loading ratio on flat slab connections at elevated temperature: A numerical study
S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 664-674 doi: 10.1007/s11709-020-0620-9
关键词: concrete finite elements fire load-induced thermal strain punching shear
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 411-428 doi: 10.1007/s11709-023-0928-3
关键词: pre-stressed concrete sleeper ultrahigh performance fiber-reinforced concrete pull-out test static bending test steel fiber aspect ratio volume fraction
Research review of the cement sand and gravel (CSG) dam
Xin CAI, Yingli WU, Xingwen GUO, Yu MING
《结构与土木工程前沿(英文)》 2012年 第6卷 第1期 页码 19-24 doi: 10.1007/s11709-012-0145-y
关键词: cement sand and gravel (CSG) dam cement sand and gravel (CSG) material research review
刘恕
《中国工程科学》 2002年 第4卷 第1期 页码 9-14
就沙产业的概念、理论依据、技术要点及意义做了全面阐述。沙产业作为沙漠戈壁合理利用的科学 构想,是以沙漠戈壁地区具有充分阳光天賦资源优势为出发点,提倡用现代技术成果提高植物的光合作用效率, 并在市场机制引导下施以有效的管理,最终获得经济、生态双项效益。同时就沙产业当前应用的技本路线通俗 表达的“多采光、少用水、新技术、髙效益”内容做了诠释;介绍了在甘肃张掖地区的实践效果;在世界范围 内解决人类粮食需求的意义也有说明。
标题 作者 时间 类型 操作
Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio
期刊论文
Effects of coarse and fine aggregates on long-term mechanical properties of sea sand recycled aggregate
期刊论文
Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete
Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA
期刊论文
Long term performance of recycled concrete beams with different water–cement ratio and recycled aggregate
Jingwei YING; Feiming SU; Shuangren CHEN
期刊论文
Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting
John O’MALLEY, Hakim S. ABDELGADER,
期刊论文
Pre-chamber turbulent jet ignition of methane/air mixtures with multiple orifices in a large bore constant volumechamber: effect of air-fuel equivalence ratio and pre-mixed pressure
Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG
期刊论文
Numerical simulation of compaction parameters for sand-filled embankment using large thickness sand filling
Wentao WANG, Chongzhi TU, Rong LUO
期刊论文
Recovery of free volume in PIM-1 membranes through alcohol vapor treatment
Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo
期刊论文
Influence of loading ratio on flat slab connections at elevated temperature: A numerical study
S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM
期刊论文
Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete railway sleepers
期刊论文
Research review of the cement sand and gravel (CSG) dam
Xin CAI, Yingli WU, Xingwen GUO, Yu MING
期刊论文