Study on Construction Technology of Geogrid Treatment for Slope of Swelling Rock

2012 ◽  
Vol 238 ◽  
pp. 419-421
Author(s):  
Ying Gao ◽  
Ting Hua Zhao ◽  
Jie Bao
Keyword(s):  
Expansive Soil ◽  
Raw Material ◽  
Construction Technology ◽  
Middle Line ◽  
In Situ Experiment ◽  
Efficient Treatment ◽  
Project Construction ◽  
Channel Slope ◽  
Swelling Rock

Combined with the Luwangfen test section in the Middle Line of SNWT, the geosynthetic reinforcing technology which is an efficient treatment measure for channel slope in expansive soil region was studied by in-situ experiment. The raw material, operating sequences, standards and testing for construction were systematically researched and summarized. The results provide valuable reference for the similar project construction.

Construction Technology of Geogrid with Simplified Wrapped Face to Reinforce Swelling Rock Slope

2011 ◽  
Vol 261-263 ◽  
pp. 1690-1693
Author(s):  
Feng Yi Tan ◽  
Rong Hua Zou ◽  
Han Bing Hu ◽  
Zu Kai Lin
Keyword(s):  
Rock Slope ◽  
Layer By Layer ◽  
Construction Technology ◽  
In Situ Test ◽  
Whole Process ◽  
Test Region ◽  
North Water ◽  
Main Canal ◽  
Swelling Rock

The swelling rock slope reinforced by geogrid with wrapped face was one of reinforced methods in the swelling rock test region of main canal in South-to-North Water Division Project, the key step was the geogrid with wrapped face in layer by layer, which was not only the core step to make sure the reinforced swelling rock slope with geogrid as a integrality, but also the most complex, time consuming and cost in the whole process. From the in situ test, the construction technology and related construction parameters of geogrid of simplified face to reinforce the swelling rock slope was obtained, in which the construction of geogrid with wrapped face was optimized, the construction progress was improved and its cost was reduced, which contributed to the generalization and application of geogrid with simplified wrapped face to reinforce swelling rock slope in the middle-route of South-to-North Water Division Project, meanwhile, it was provided as a references for similar engineering.

scholarly journals From small wrinkles to Schallamach waves during rubber friction: In situ experiment and 3D simulation

2021 ◽  
Vol 96 ◽  
pp. 107084
Author(s):  
Cui Zhibo ◽  
Su Zhaoqian ◽  
Hou Dandan ◽  
Li Genzong ◽  
Wu Jian ◽  
...  
Keyword(s):  
3D Simulation ◽  
In Situ Experiment ◽  
Rubber Friction

scholarly journals Application of temporary reinforcement technology in insufficient construction of the understructure bearing capacity of viaduct

2019 ◽  
Vol 136 ◽  
pp. 04080
Author(s):  
Guohui Cao ◽  
Reqiang Liu ◽  
Jing Liu ◽  
Xiang Gao ◽  
Peng Wang
Keyword(s):  
Bearing Capacity ◽  
Three Dimensional ◽  
Social Benefits ◽  
Construction Technology ◽  
Project Cost ◽  
Special Cases ◽  
Project Construction ◽  
Lower Structure ◽  
Traditional Construction

The complex three-dimensional traffic construction often occur when the lower structure cannot bear the construction load and other special cases, indicating the need for temporary reinforcement of the lower structure. In this paper, combined with a project construction example, various temporary reinforcement technologies are adopted to solve the insufficient bearing capacity during understructure construction, which poses a serious danger, to ensure synchronous construction of the understructure and viaduct. Compared with the traditional construction technology, the temporary reinforcement technology proposed in this paper features the advantages of saving project cost and time and has achieved better economic and social benefits.

An in situ Raman spectroscopic method for quantification of polyethylene glycol (PEG) in waterlogged archaeological wood

Holzforschung ◽  
2020 ◽  
Vol 74 (11) ◽  
pp. 1043-1051
Author(s):  
Åke Henrik-Klemens ◽  
Katarina Abrahamsson ◽  
Charlotte Björdal ◽  
Alexandra Walsh
Keyword(s):  
Polyethylene Glycol ◽  
Spectroscopic Method ◽  
Calibration Model ◽  
Efficient Treatment ◽  
Raman Spectroscopic ◽  
Archaeological Wood ◽  
Validation Set ◽  
Impregnation Period ◽  
Polymer Impregnation

AbstractThe weakened microstructure of archaeological wood (AW) objects from waterlogged environments necessitates consolidation to avoid anisotropic shrinkage upon drying. Polymer impregnation through submergence or spraying treatments is commonly applied, and for larger and thicker objects, the impregnation period can stretch over decades. Thus, for efficient treatment, continuous monitoring of the impregnation status is required. Today, such monitoring is often destructive and expensive, requiring segments for extraction and chromatographic quantification. This study proposes an in situ Raman spectroscopic method for quantification of polyethylene glycol (PEG) in waterlogged AW. A calibration model was built on standards of PEG, cellulose powder, and milled wood lignin using orthogonal partial least squares (OPLS). The OPLS model had a strong linear relationship, and the PEG content in wood of varying degrees of degradation could be determined. However, the accuracy of the model was low with a root mean square error of prediction of 11 wt%. The low accuracy was traced to the heterogeneity in the calibration and validation set samples with regard to the small probing volume of the confocal instrumental setup.

Fabrication of Nanoscale Homogeneous Lead Azide@Carbon Fiber Film with Low Electrostatic Sensitivity by In-situ Synthesis

2021 ◽  
Author(s):  
Zhenzhan Yan ◽  
Li Yang ◽  
Ji-Min Han ◽  
Haojie Li ◽  
Junda Huo
Keyword(s):  
Carbon Fiber ◽  
Lead Acetate ◽  
In Situ Synthesis ◽  
Raw Material ◽  
Lead Azide ◽  
Nano Scale ◽  
Carbon Based

In this work, a nano-scale carbon-based lead azide initiating film was prepared by electrospinning, carbonization, azide, and other steps using cheap and easily available lead acetate as the raw material....

An in situ experiment on temperature sensitivity of near-shore benthic foraminifera

1996 ◽  
Vol 26 (1) ◽  
pp. 53-63 ◽  
Author(s):  
C. T. Schafer ◽  
F. E. Cole ◽  
D. Frobel ◽  
N. Rice ◽  
M. A. Buzas
Keyword(s):  
Temperature Sensitivity ◽  
Benthic Foraminifera ◽  
In Situ Experiment ◽  
Near Shore

scholarly journals Ag-TON nanospheres coupled with fly ash cenospheres for wastewater treatment under visible light irradiation

2018 ◽  
Vol 78 (11) ◽  
pp. 2321-2327 ◽  
Author(s):  
Yan Ma ◽  
Zhihuan Zhao ◽  
Jimin Fan ◽  
Zhanyong Gu ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Visible Light ◽  
Raw Material ◽  
X Ray Diffraction ◽  
Hydrolysis Method ◽  
Composite Photocatalysts ◽  
Recycle And Reuse ◽  
Doping Ratio ◽  
Fly Ash Cenospheres

Abstract Using tetra-n-butyl titanate as raw material and fly ash cenospheres (FAC) as carrier, the photocatalysts of Ag-TON/FAC were successfully prepared by solvothermal and in-situ hydrolysis method. These visible light photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectroscopy (FL) and UV–vis diffuse reflectance spectra (DRS). In this study, methyl orange and ciprofloxacin were used as wastewater degradation targets to investigate the effect of the amount of titanium dioxide and the amount of Ag doping on the activity of photocatalysts. On the basis of this, the optimal ratio of TiO2 to FAC was 2:1 and the optimum doping ratio of Ag was determined to be 15 wt.%. The composite photocatalysts dispersed uniformly and were easy to recycle and reuse, which were benefits in fully utilizing the solar energy. The degradation efficiency remained at more than 60% after being renewed five times for MO and ciprofloxacin. The photocatalysts of Ag-TON/FAC can reduce the environmental burden caused by FAC also.

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