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Analysis of behavior of melted dark green silty soil

TANG Yiqun, ZHOU Nianqing, YANG Ping, SHEN Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3, Pages 242-245 doi: 10.1007/s11709-008-0022-x

Abstract: The mechanic characteristics of common soil and those of melted soil are presented and their influences

Keywords： electron microscopy mechanic microscopic perspective addition dynamic

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A comparative study of the mechanical properties, fracture behavior, creep, and shrinkage of chemically based self-consolidating concrete

Mahdi AREZOUMANDI, Mark EZZELL, Jeffery S VOLZ

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1, Pages 36-45 doi: 10.1007/s11709-014-0243-0

Abstract: This study presents the results of an experimental investigation that compares the mechanical properties, fracture behavior, creep, and shrinkage of a chemically-based self-consolidating concrete (SCC) mix with that of a corresponding conventional concrete (CC) mix. The CC and SCC mix designs followed conventional proportioning in terms of aggregate type and content, cement content, air content, water-cementitiuos materials ( / ) ratio, and workability. Then, using only chemical admixtures, the authors converted the CC mix to an SCC mix with all of the necessary passing, filling, flowability, and stability requirements typically found in SCC. The high fluidity was achieved with a polycarboxylate-based high-range water-reducing admixture, while the enhanced stability was accomplished with an organic, polymer-based viscosity-modifying admixture. The comparison indicated that the SCC and CC mixes had virtually identical tensile splitting strengths, flexural strengths, creep, and shrinkage. However, the SCC mix showed higher compressive strengths and fracture energies than the corresponding CC mix.

Keywords： admixture conventional concrete (CC) creep fracture mechanic mechanical Properties self-consolidating

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Mechanic analysis of a new 20 m bridge-inspection vehicle with the finite element method

Shen Yiping,,He Fuquan,Wang Songlai, Zhang Tian

Strategic Study of CAE 2010, Volume 12, Issue 9, Pages 107-112

Abstract:

This paper focuses on a new designed 20-meters bridge-inspection vehicle. The whole vehicle is modeled within Pro/e software with respect to four kinds of working conditions, and its static and modal finite element analysis are performed by using the finite element code ANSYS. Based on these analysis results, the strength of the whole designed structure is checked, and all dangerous parts are found, finally, some suggestions are given to strengthen the structure. The finite element analysis is an important theoretic method to verify the design, and the results provide theoretic bases and technological support for this vehicle design and manufacture.

Keywords： bridge-inspection vehicle finite element analysis static modal analysis strength