scholarly journals Ground Improvement. Effect of Steel Bars Reinforcement on Slope Stability.

1998 ◽  
Vol 47 (2) ◽  
pp. 140-143
Author(s):  
Kazuhiko NISHIDA ◽  
Tatsuaki NISHIGATA
Keyword(s):  
Slope Stability ◽  
Ground Improvement ◽  
Steel Bars ◽  
Improvement Effect

scholarly journals Evaluation on Improvement Zone of Foundation after Dynamic Compaction

2021 ◽  
Vol 11 (5) ◽  
pp. 2156
Author(s):  
Chong Zhou ◽  
Chenjun Yang ◽  
Hui Qi ◽  
Kai Yao ◽  
Zhanyong Yao ◽  
...  
Keyword(s):  
Sandy Soil ◽  
Ground Improvement ◽  
Soil Improvement ◽  
Dynamic Compaction ◽  
Impact Point ◽  
Weak Zone ◽  
Factors Affecting ◽  
Improvement Effect ◽  
Drop Number ◽  
Highly Correlated

Dynamic compaction (DC) is one of the most popular methods for ground improvement. To solve the problem of the factors affecting the sandy soil improvement effect and estimate the effective improvement range under DC, the influences of drop number, drop energy, tamping distance, tamper radius, and drop momentum on the relative degree of improvement were investigated. Three normalized indicators Δδz,i, ΔδA,i, and ΔδU,i were derived to evaluate the weak zone and corresponding improvement effect. For multipoint tamping, it is found that the improvement depth and the improvement of the weak zone are highly correlated with drop energy and drop momentum, while the influence of the drop number and tamper radius is relatively smaller. The improvement of the weak zone and the improvement depth decrease with tamping distance, whereas the improvement area increases with tamping distance. The soil compacted by the previous impact point will be improved to a lesser extent with impact at subsequent impact points. It is also noted that drop energy had better not exceed the saturated drop energy in DC design. Based on the parametric study, a formula considering the various factors of DC was put forward, with the validation by two field cases of DC.

scholarly journals Inhibition Effect of Different Corrosion Inhibitors on Steel Bars Corrosion and Improvement Effect After Double Doped

2021 ◽  
Vol 9 (4) ◽  
pp. 105
Author(s):  
Minghui Jiang ◽  
Meiyan Hang ◽  
Yubing Yang ◽  
Teng Cheng ◽  
Hao Wang ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Inhibition Effect ◽  
Steel Bars ◽  
Improvement Effect

Ground Improvement. Effect of Cement Stabilization on Prevention of Reddish Soil Flow-Out.

1998 ◽  
Vol 47 (2) ◽  
pp. 152-155
Author(s):  
Hosei UEHARA ◽  
Hisao HARA ◽  
Yoshitsugu UTIMA ◽  
Terutaka NAKAMATSU
Keyword(s):  
Ground Improvement ◽  
Improvement Effect ◽  
Cement Stabilization ◽  
Soil Flow

scholarly journals RELATIONSHIP BETWEEN THE GROUND IMPROVEMENT SHAPE AND IMPROVEMENT EFFECT

2016 ◽  
Vol 81 (729) ◽  
pp. 1955-1962
Author(s):  
Hiroshi IJUIN ◽  
Shozo WADA ◽  
Tomonori ENSAKA ◽  
Tohru OSAKABE
Keyword(s):  
Ground Improvement ◽  
Improvement Effect

The Experimental Research of Slurry Improvement with Different Kinds of Vertical Drains under New Vacuum Conditions

2013 ◽  
Vol 405-408 ◽  
pp. 396-401
Author(s):  
Jian Chen ◽  
Qiao Liang Tang ◽  
Shi Jing Liu
Keyword(s):  
Experimental Research ◽  
Ground Improvement ◽  
Soil Improvement ◽  
Vacuum Preloading ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Drain Spacing ◽  
Soil Zone ◽  
Reclaimed Soil ◽  
Improvement Effect

The results of experimental research are presented and discussed with focus on the ground improvement effect of slurry with different kinds of vertical drains under new vacuum conditions. In these conditions, horizontal sand cushion, which is requested in regular vacuum preloading method, is cancelled. Vertical drains are connected with sealed pipes, so the vacuum head can be transmitted into vertical drains without decreasing. For the experimental research, slurry taken from reclaimed soil zone is placed into six model casing boxes. Different kinds of vertical drains (prefabricated vertical drains (PVDs) and sand drains) are installed into the soil with different spacing (0.4 m and 0.8 m). A vacuum pressure of 80 kPa was applied continuously for 90 days. The effect of filter type of PVD, type of vertical drain and drain spacing under new vacuum preloading condition to slurry soil improvement is examined. Test results show that this new vacuum preloading condition can transmit vacuum head into vertical drains efficiently and the effect of drain filter to slurry improvement is affected by the drain spacing.

scholarly journals Ground Improvement. Effect of Dwarf Bamboo for Stability of a Slope Surface.

2000 ◽  
Vol 49 (1) ◽  
pp. 30-33 ◽  
Author(s):  
Tetsuji YAMADA ◽  
Kazuo TAKEDA ◽  
Akihiko OKAMURA ◽  
Takahiro ITOH
Keyword(s):  
Ground Improvement ◽  
Dwarf Bamboo ◽  
Slope Surface ◽  
Improvement Effect

The stability and collapse of lava domes: insight from UAS-derived 4D structure and slope stability models

2020 ◽  
Author(s):  
Brett Carr ◽  
Einat Lev ◽  
Loÿc Vanderkluysen ◽  
Danielle Moyer ◽  
Gayatri Marliyani ◽  
...  
Keyword(s):  
Slope Stability ◽  
Lava Domes ◽  
The Stability
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