1、

For the lack of study on the effect of freeze-thaw on the mechanical properties of soil, a low cost and high degree of accuracy low temperature triaxial testing machine was developed based on theory of thermal conduction in this paper.

针对当前土冻融循环的力学效应研究相对薄弱的现状,本文运用导热学、机械学等理论自行研制了适合低端市场的低成本、高精度的高低温冻融三轴试验机。

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2、

Effects of the incubation time, incubation temperature and number of freeze-thawing cycles on the entrapment effciency were studied.

考察孵化时间、孵化温度、冻融次数对包封率的影响;

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3、

Based on test, the article has analyzed the influence of freeze-thaw cycles to concrete compressive strength, flexural strength and cleavage strength, then approached mechanism of fracture by freeze-thaw on micro-structure.

通过试验分析了冻融循环对混凝土抗压、抗折、劈拉强度的影响,并从微观结构探讨了混凝土冻融破坏机理。

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4、

Based on the fast freeze-thaw test, the alkaline resistance test, the water immersion test, the wet-thermal exposure test and artificial accelerated aging test, the influence of the corroding environment on the mechanical behavior of fiber reinforced polymer ( FRP) laminates and adhesive was studied.

通过快速冻融试验、耐碱性试验、浸水试验、湿热暴露试验、人工加速老化试验,研究了腐蚀环境对纤维增强复合材料(FRP)的复合体及粘结剂力学性能的影响。

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5、

Through freeze-thaw cycle test of asphalt mixture in different gradings, the paper analyes the change laws of porosity in the course of freeze-thaw cycle and its influencing factors.

通过对不同级配的沥青混合料做冻融循环试验,分析了在冻融循环过程中空隙率的变化规律及其影响因素。

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6、

At the same time, making the impacting and penetration test for asphalt mixture specimens which have been in the different freeze-thaw cycles, to get the relationship of average penetration depth and fracture tensile strength.

同时,通过对受到不同冻融循环的沥青混合料试件进行冲击贯入试验,得到均贯入深度与劈裂抗拉强度的关系。

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7、

Periodical and regular cares are introduced, protection from freeze-thaw, carbonation and chemical corrosion are also discussed.

混凝土坝经常或定期性养护及冻害、碳化、氯离子侵蚀与化学侵蚀的防护;

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8、

Salt solution and then placed in a special specimen damage, into the freezing and thawing the freeze-thaw cycle test cases, test cycles under different concentrations of chloride ion penetration and the concrete surface erosion situation.

然后将盐溶液置于特制的损伤试件中,进冻融箱进行冻融循环试验,测试不同循环次数下氯离子渗入的浓度以及混凝土表面的剥蚀情况。

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9、

Air-void spacing factor of approximately 200 μ m is useful to protect concrete from freeze-thaw damage.

当引气混凝土的气泡间距系数小于200μm时,混凝土具有较高的抗冻性。

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10、

Analyzed the reason of freeze-thaw and sliding of cutting slope, put forward checking computations model based on the method of mechanic and parse;

分析土质路堑边坡冻融滑塌原因,提出了基于力学解析法的验算模型;

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11、

Analyzed the reason of slope freeze-thaw collapse, advanced prevention measure and checking formula of slope freeze-thaw collapse.

分析了边坡冻融滑塌的原因,提出了防治措施及边坡浅层冻融滑塌稳定性验算公式。

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12、

The use of polynomial fitting broken fiber lightweight aggregate concrete and the number of freeze-thaw damage the relationship between the degree of change, a better fitting relations.

利用多项式拟合纤维轻骨料混凝土碎冻融次数与损伤度变化的关系,拟合关系较好。

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13、

The influence of freeze-thaw action on behavior of concrete beams strengthened by glass fiber reinforced plastics

冻融循环对玻璃纤维布加固混凝土梁受力性能影响

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14、

Experimental Study on Freeze-thaw Process of Soil after Autumn Irrigation

冬灌条件下土壤冻融过程的试验研究

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16、
17、

The applying research emphasis on the numerical prediction models and preventions from freeze-thaw harm of the frost heave and thawing settlement.

应用研究主要研究冻胀、融沉的预报模型和防冻胀、融沉措施。

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18、

Review on Evaluation of Bull Sperm Quality after Freeze-Thaw

牛冷冻精液质量评估研究进展

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19、

The research of freeze-thaw damage of prestressed concrete based on damage mechanics

基于损伤理论的预应力混凝土冻融破坏研究

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20、

Flow rate which is the dominant factor, followed by the freeze-thaw temperature, moisture content, thaw depth and the number of freeze-thaw cycles.

其中流量是主导因子,其次是冻融温差、解冻深度、含水率,再者是冻融循环次数。

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