试验研究了含气量对碾压混凝土抗冻性的影响。
The effect of air content on the frost resistance of roller compacted concrete(RCC)is discussed.
讨论了SOD在树木抗冻性中可能具有的作用。
The possible role of SOD as free-radical scavenger in cold resistance is discussed.
提高作物的抗冻性对于提高作物产量有着非常重要的意义。
The enhancement of freezing tolerance for crops has significant meanings for the improvement of crops output.
根据我国的实际情况，初步探讨混凝土抗冻性定量化设计的方法。
Finally, the quantitative design method for the freeze proof durability of concrete is suggested, according to the present condition of the country.
并对其抗压、抗折、新老界面粘结强度及抗冻性等进行了实验研究。
Bending strength, compressive strength, interfacial bond strength and frost-resistance were also studied and analyzed.
采用再生粗集料配制混凝土时，强度和抗冻性均良好，但收缩较大。
When coarse reclaimed aggregate is used to prepare concrete, the concrete is good in strength and frost resistance and its shrinkage is rather great.
环已亚胺抑制可溶性蛋白质含量增加，同时也抑制细胞抗冻性发育。
Cycloheximide inhibited both the increase of soluble protein and the development of freezing tolerance.
该机生产出来的产品密实性好、强度高、边角整齐、耐磨及抗冻性好。
And its products have good compactness, high intensity, regular corners, good wear resisting and frost resistant ability.
作为评价混凝土抗冻性的参数之一，混凝土气泡间距系数越来越受到重视。
ABSTRACT: Being a parameter of concrete antifreeze evaluation, air void spacing factor had got much more attention.
石屑混凝土的抗冻性较天然河砂混凝土要好，抗渗性与天然河砂混凝土相当。
The freeze-resistance of crushed stone dust concrete was better than natural sand concrete. The impermeability of crushed stone dust and natural sand concrete is nearly.
并对修补混凝土的抗折、抗压、新老界面粘结强度以及抗冻性等进行了试验研究。
Bending strength, compressive strength, interfacial bond strength and frost-resistance are also studied and analyzed.
性能：凝结硬化快，早期强度高，耐磨、抗冻性强，和易性好，强度增进率稳定。
Performance: Concretion hardens quickly, early strength high, wear-resisting, anti-frozen strong, the flowability good, the rate of strength development stable.
本发明的抗冻基因将在培育抗冻性增强的植物(特别是水稻)中发挥重要的作用。
The antifreeze gene of the present invention will play an important part in breeding plant, especially rice, with enhanced antifreeze property.
抗冻性是道路水泥混凝土主要的特性，它在很大程度上决定着水泥混凝土路面的耐久性。
Freeze resisting property is the main function of the road cement concrete. It determines the enduring property of the cement concrete pavement.
低温驯化诱导可溶性蛋白质含量增加，其增加的时间进程与细胞抗冻性发育呈平行关系。
Cold acclimation induced the increase of soluble protein content, and its time course of increase was in accordance with the development of freezing tolerance.
矿渣砖是一种新型的水工建筑材料，它具有强度大、抗冻性强、成本低、利于环保等特点。
Slag brick is a new kind of hydraulic construction material. It has some evident advantages, such as large strength, strong frost-resisting, low cost and beneficial to protect environment.
产品通过国家质监部门质量检测，透气性好、抗冻性强、无辐射、无放射且有耐酸碱性强等特点。
The products has good air permeability, strong frost resistance, no peel, no radiation and no radioactive which has passed by government inspection department.
在盐卤水中，混凝土一般不会发生冻融破坏，混凝土抗冻性取决于混凝土抗盐溶液化学侵蚀的性能。
In bittern solution, freezing thawing will not destroy all concretes, and the frost resistance of concrete is decided by the capability of concrete resisting to chemical corrosion.
结果表明，复合膨胀剂对石屑砂浆凝结性能和抗冻性能几乎没有影响，可以改善其保水性和抗渗性。
Results indicated that the compound expansion agent almost hasn't effect both on setting and frost resistance of crushed stone mortar, but can enhance its permeability resistance ability.
为配合青藏铁路工程应用，配制抗冻性高、强度较高、适合于青藏铁路预应力混凝土梁的高性能混凝土。
An experimental investigation was conducted to provide high-performance concrete, with high frost resistance and proper strength, to construction of precast elements of Bridges in Qing-Zang railway.
通过大量试验，系统研究了人工砂高性能混凝土的耐久性，对抗渗性、抗冻性、氯离子扩散系数等项目进行了测试。
Through a great deal of experiments, the durability of HPC with artificial sand are studied systematically. Impermeability, freezing resistance and chloride ion diffusion are tested.
而引气已成为提高混凝土抗冻性的一项主要措施广泛应用于各种混凝土工程中，并取得了明显的经济效益和社会效益。
As a main measure to improve the frost resistance of concrete, air-entrained concrete has been applied to many kinds of engineering and has got very clear financial and social effects.
抗冻性，给100次冻融循环，不掺者试件脱皮酥松，强度损失高达70％； 掺者试件表面完好无损，强度损失8％。
Frost resistance, give 100 times the natural freeze-thaw cycle, not mixed specimens peeling, SuSong strength loss as high as 70 %, Mixed specimens are intact, the surface strength loss 8 %.
介绍了寒区混凝土无机防护剂产品，并且通过实验研究测定了该防护剂产品对混凝土抗渗性、抗冻性以及抗压强度的影响。
This article introduces an inorganic protective agent for concrete in cold climate, and the influence on impermeability, freezing resistance and compressive strength were analyzed.
本文主要阐述了混凝土冻融破坏的机理，国内外混凝土抗冻性试验方法，评价参数及影响混凝土的抗冻性试验方法的因素。
In this paper the deterioration mechanism by freeze-thaw cycling, the test methods about frost resistance, appraising parameters of concrete and the influencing factors mainly were represented.
总之在大量的实验基础上，对不同掺量的超细矿渣粉高性能混凝土的强度、体积稳定性、抗冻性等耐久性进行了全面的分析。
In a word, based on plenty of experiment, the intensity, volume stability and freezing-resistance of this new kind of high performanced concrete have been completely analyzed.
总之在大量的实验基础上，对不同掺量的超细矿渣粉高性能混凝土的强度、体积稳定性、抗冻性等耐久性进行了全面的分析。
In a word, based on plenty of experiment, the intensity, volume stability and freezing-resistance of this new kind of high performanced concrete have been completely analyzed.
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