Experimental Study and Application of the Different Waste Rock Compaction Characteristics Filled in Roadside of Gob-Side Entry Retaining

2011 ◽  
Vol 356-360 ◽  
pp. 2725-2729
Author(s):  
Yun Hai Cheng ◽  
Xin Shan Guo ◽  
Fu Xing Jiang ◽  
Zhi Liang Fu
Keyword(s):  
Experimental Study ◽  
Grain Size ◽  
Water Content ◽  
Natural Water ◽  
Stress And Strain ◽  
Design Basis ◽  
Natural Water Content ◽  
Strain Relationship ◽  
Relationship Of ◽  
Water Contents

Stress-strain relationship of waste body under different side pressures, water contents and particle fractions are investigated in this paper. The bearing features of waste filled body of entry retaining besides gob-side entry retaining are: (1) filling waste gob-side entry retaining requires adequate horizontal restraint; (2) gangue water content has little effect on filling body intensity and waste in natural water content state can be used to fill in gob-side entry retaining; (3) stress and -strain relationship of waste body (grain size ranges from 0 to 10mm) is nonlinear. The bearing capacity can meet the requirement of beside gob-side entry retaining support. Based on above experimental results, the industrial roadway retained experiment is successful. The research results provide theory design basis for wide application.

scholarly journals Experimental Study of the Bending Strength of Recycled Concrete and Wooden Waste by Heating Compaction

2020 ◽  
Author(s):  
Liang Li ◽  
Yuya Sakai
Keyword(s):  
Experimental Study ◽  
Water Content ◽  
Bending Strength ◽  
Recycled Concrete ◽  
New Approach ◽  
Ordinary Concrete ◽  
Mixture Pressure ◽  
The World ◽  
Recycle Concrete ◽  
Water Contents

A large amount of concrete waste is generated around the world and its recycling is an urgent issue. In this research, a new approach to recycle concrete waste with wooden waste was studied. Concrete and wooden wastes were crushed, mixed, and heat compacted to produce plates with different water contents and mix proportions at various temperatures, pressures, and durations of compaction. The bending strength of the plates was measured after compaction. The result indicated that with an increase in the percentage of wooden waste in the mixture, pressure, or temperature improved the bending strength. The increase in water content reduced the bending strength. Most of the products exhibited higher bending strength than that of ordinary concrete.

Stress-strain relationship of translucent nanocrystalline Gadolinium Zirconate ceramic with grain size below 10 nm using nanoindentation

2020 ◽  
Vol 46 (6) ◽  
pp. 8490-8494 ◽  
Author(s):  
Haomin Wang ◽  
Zhangyi Huang ◽  
Jirui Deng ◽  
Duanwei He ◽  
Jianqi Qi ◽  
...  
Keyword(s):  
Grain Size ◽  
Stress Strain ◽  
Gadolinium Zirconate ◽  
Strain Relationship ◽  
Relationship Of

Experimental Study on Dewatering Dredged Clay with Ventilating Vacuum Method

2011 ◽  
Vol 261-263 ◽  
pp. 1650-1654 ◽  
Author(s):  
Feng Ji ◽  
Jian Wen Ding ◽  
Zhen Shun Hong ◽  
Yue Gui
Keyword(s):  
Experimental Study ◽  
Spatial Distribution ◽  
Surface Water ◽  
Water Content ◽  
Liquid Limit ◽  
Initial Water Content ◽  
Distribution Law ◽  
Initial Water ◽  
Vacuum Method ◽  
Water Contents

A series of model tests were performed on dredged clay with high initial water contents for investigating the dewatering behavior by ventilating vacuum method (VVM). The results shows that the surface water separated from dredged clay can be quickly removed by VVM in which a new pattern PVD is used. In addition, the method also speeds up the deposition of dredged clay. The volume of dredged clay with an initial water content of 4.5 times liquid limit decreases by 50 percent within two months. This paper also investigated the spatial distribution law of water content by TDR method. It is found that the drainage distance of PVD is about 0.3-0.4m.

STUDIES IN TREE PHYSIOLOGY: III. THE EFFECT OF THE METHOD OF CUTTING ON THE WATER CONTENT OF TWIGS. A NOTE ON A PAPER BY McDERMOTT

1942 ◽  
Vol 20c (4) ◽  
pp. 236-240
Author(s):  
R. Darnley Gibbs
Keyword(s):  
Water Content ◽  
Natural Water ◽  
Tree Physiology ◽  
Water Contents ◽  
Water Gradients

Significantly higher water contents are found in short samples of twigs isolated by simultaneous cuts than in samples isolated by consecutive cuts in which displacement of water obviously takes place. This is in agreement with the results of McDermott. Natural water gradients are small and do not invalidate McDermott's figures. Displacement is not confined to the immediate neighbourhood of the cut.

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