Degradation of mechanical properties of concrete caused by freeze-thaw action;
冻融作用后混凝土力学性能的衰减规律
Relationship between freeze-thaw action and soil moisture for Northeast black soil region of China;
东北黑土区冻融作用与土壤水分的关系
Influence of freeze-thaw action on the microstructure of bonding interface between reinforcement and concrete was studied by means of SEM.
为了分析冻融环境对钢筋与混凝土间粘结界面显微结构的影响,利用扫描电镜对取自冻融作用前后钢筋周围不同位置处的界面样品进行了观察,并通过宏观力学试验验证了粘结性能随冻融作用的退化规律。
Dynamic response of vertically vibrating pile during freezing and thawing;
冻融作用下基桩竖向振动动力特性研究
The impacts of temperature include the action of water and thermal of soil to the eco-system,in which the action of freezing and thawing is one of the important temperature factors which can cause the changes of soil physical,chemical and biological characteristics.
冻融使土壤经历一系列物理、化学和生物变化过程,冻融作用对土壤的影响主要表现为:改变土壤结构、含水量分布和水热运动,影响微生物活性和以微生物为媒介的有机质矿化作用,改变土壤元素的生物地球化学循环过程,从而对土壤生态系统结构和功能产生影响。
Freezing and thawing inflected much soil bulk density on the surface of the soil with different bulk density and with the same water content of 30%.
为了明确冻融作用是否有助于解决免耕或少耕带来的土壤容重增大等问题,我们在黑龙江省嫩江县鹤山农场进行不同含水量、不同容重的黑土冻融试验。
Freeze-thaw is a universal phenomenon of black soil area in Northeast China, and soil freeze-thaw region is an important N2O emissions source.
本论文以黑龙江省农业科学院黑土肥力长期定位监测试验基地即“农业部哈尔滨黑土生态环境重点野外科学观测试验站”的黑土为研究对象,对在不同施肥制度下冻融作用对黑土N2O排放的影响,以及黑土微生物群落和N2O产生的关系进行研究。
Resharch on Damage and Fracture of Concrete Subjected to Freeze-Thaw-Cycles
冻融作用下混凝土的损伤与断裂研究
Impact of climate change on freeze-thaw function and freeze-thaw erosion in black soil region of Northeast China
气候变化对东北黑土冻融作用与冻融侵蚀发生的影响分析
Freezing and thawing actions greatly change the mechanical properties of soil by influencing its microstructure.
冻融作用对土的力学性质改变很大,而这又是源于冻融作用对微结构的影响;
Experimental Study of the Freeze-Thaw Effects on Physical and Mechanical Properties of Soils;
冻融作用对土物理力学性质影响的试验研究
Disease Investigation of the Loess Cave Dwelling and Study on Freezing and Thawing Action;
黄土窑洞的病害调查及冻融作用试验研究
Research on Frozen-Thaw Behavior Affect the Mechanical Property of Chengdu Clay
冻融作用对成都粘土力学性质的影响研究
Experimental study on effects of freezing and thawing on mechanical properties of clay
冻融作用对黏土力学性能影响的试验研究
Effects of the Freeze-thaw Action on Chloride Erosion into Concrete
冻融作用对混凝土氯离子侵蚀影响的研究
RESEARCHED ON FRACTAL CHARACTERIC OF CONCRETE FRACTURE SURFACE AFTER FREEZE-THAW CYCLES
冻融作用混凝土断裂面的分形特征研究
Review on the Effects of Freezing and Thawing on the Physiochemical and Biological Properties of Soil
冻融作用对土壤理化及生物学性质的影响综述
Experimental Study on Electrical Resistivity Characteristics of Silty Clay under Uniaxial Compression and Frozen-thaw Cycles
单轴压缩与冻融作用下粉质粘土电阻率特性试验研究
Relationship of Nitrous Oxide Emission and Microbial Properties in Black Soil as Affected by Freeze-thaw Event
冻融作用下黑土氧化亚氮排放与微生物性状关系研究
Investigation of Refinement Means for Microstructure of Hypereutectic Al-Fe Casting Alloys
在应力和冻融作用下高强粉煤灰混凝土耐久性试验研究
Fatigue property analysis and reliability research of prestressed concrete structure after freezing-thawing damnuification
预应力混凝土在冻融作用下的疲劳性能分析及可靠度研究
Action of salt corrosion and stress concrete freezing-thawing damage and its restrain
盐腐蚀与应力作用下混凝土的冻融损伤及抑制
The Damage Model of Concrete under the Alternate Action of Freeze-thaw Damage and Carbonization
冻融与碳化交替作用下混凝土损伤模型
Impact of Freeze-thaw on the Concrete Bridge Life
冻融循环作用对混凝土桥梁寿命的影响
Overview on Test Methods of Deterioration of Concrete Exposed to Freeze-Thaw and Deicer
冻融和除冰盐作用下混凝土劣化试验方法评述