Results 91 to 100 of about 906 (240)

Experimental on Thermal Insulation Capacity of Polymers in Roadbed of Deep Soil-bearing Heavy Ice Layer [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
The deep soil-bearing heavy ice layer is the extreme adverse geology, on which the construction of roadbed will be exposed to serious frost heave, and thawing and settlement disease, threatening the safe operation of vehicles. Polyurethane polymer ( PU)
GUO Chengchao, DANG Peng, YIMING Mahemuti, LIU Jiangang, WU Dong, WANG He, CAO Dingfeng   +6 more
doaj   +1 more source

Basic Study on Frost Susceptibility of Rock- The physical characteristics of rock and the effect of shattering - [PDF]

, 2006
本研究は，2種類の凍上試験で構成されている。一つは不攪乱の岩石供試体を用いた凍上試験，もう一つは人工的に破砕した引張強度を持たない岩石供試体を用いた凍上試験である。不攪乱の岩石供試体の凍上試験は，その凍上性を調べるために行われた。凍上試験の結果，大谷石と来待砂岩を凍上性岩石，札幌軟石を非凍上性岩石に分類することができた。また，凍上性岩石と非凍上性岩石の物性値について比較を行い，いくつかの明らかな違いがあることがわかった。人工的に破砕した岩石供試体の凍上試験は，破砕の影響を調べるために行われた。試験には ...
Nakamura, Dai, 鈴木, 輝之, 中村, 大, 森, 訓保, 平松, 雅宏, 後藤, 隆司   +5 more
core   +1 more source

Study on Temperature Response Characteristics of Gas Containing Coal at Different Freezing Temperatures

Fuels
In the process of using the freezing method to uncover coal from stone gates, the thermal evolution profiles of the coal body during the freezing process tend to be complex due to the presence of gas and moisture.
Qiang Wu, Zhaofeng Wang, Liguo Wang, Shujun Ma, Yongxin Sun, Shijie Li, Boyu Lin   +6 more
doaj   +1 more source

Additional frost heave testing of Caen silt

, 1984
Preliminary measurements of segregation potential were made on two samples of Caen silt similar to that used in experiments at the pipeline test facility in Caen. The measurements conducted under conditions of varying pressure and thermal gradient show a lower frost susceptability than similar studies of the Calgary silt although the data shows ...
openaire   +1 more source

Experimental Study on the Anti-frost Jacking Ability of Belled Pile Under Unidirectional Freezing Condition

工程科学与技术, 2021
By applying the method of unidirectional freezing, a series of laboratory tests were carried out to study the anti-frost jacking ability of belled piles in seasonal frozen soil regions.
Xubin HUANG, Yu SHENG, Long HUANG, Erxing PENG, Wei CAO, Xiyan ZHANG, Binbin HE   +6 more
doaj  

DIFFERENCES IN FROST SUSCEPTIBILITY OF ROCK AND SOIL [PDF]

, 2010
本研究は，岩石と土の凍上特性の違いを，実験的に検証するものである．実験は2種類の凍上試験で構成されており，一つは引張強度を持つ固体の岩石を用いた凍上試験，もう一つは破砕処理を施した，引張強度を持たない粉粒体の岩石と，土の凍上試験方法を用いた凍上試験である．2種類の凍上試験の結果から，非凍上性岩石は，固体と粉粒体，どちらの状態においても凍上性を示さないことが明らかとなった．これに対し，凍上性岩石は，固体と粉粒体とで，その凍上性に大きな違いがあることが明らかとなった．両試験の比較から ...
Nakamura, Dai, 鈴木, 輝之, 中村, 大, 山下, 聡, 伊藤, 陽司, 後藤, 隆司, Yamashita, Satoshi   +6 more
core   +1 more source

Analysis of the Influence of Mud Content on the Engineering Characteristics of Sand Sulfate Saline Soil [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
In order to study the influence of mud content on salt swelling and mechanical properties of sand sulfate soils, sand sulfate soils with different fine-grained soil content were manually configured.
ZHANG Shasha, ZHANG Chao, WANG Xuchao, ZHAO Yanhu   +3 more
doaj   +1 more source

Modeling of frost heave and surface temperatures in roads

, 2002
Temperature and moisture are very essential parameters when describing the condition of a pavement. In most cases, a high moisture content involves a decreased bearing capacity and, consequently, a shorter durability of the pavement.
Hermansson, Åke
core  

Thermal Regulation and Moisture Accumulation in Embankments with Insulation–Waterproof Geotextile in Seasonal Frost Regions

Applied Sciences
As an effective engineering countermeasure against frost heave damage in seasonally frozen regions, thermal insulation boards (TIBs) were employed in embankments.
Kun Zhang, Doudou Jin, Ze Zhang, Yuncheng Mao, Guoyu Li   +4 more
doaj   +1 more source

Observation and analysis on the characteristics of strain induced by frost heave for a full-scale buried, chilled gas pipeline [PDF]

, 2013
Thesis (M.S.) University of Alaska Fairbanks, 2013This thesis examines the strain characteristics of a large-scale, buried chilled gas pipeline in the discontinuous permafrost region.
Yang, Kun
core