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.
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.
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.
结果表明，混凝土的引气量和强度是影响普通混凝土和粉煤灰混凝土抗冻性的决定因素，满足抗冻性要求的引气量取决于相应的混凝土强度等级。
The results indicated that air content and strength of the concrete had significant effects on the freezing and thawing durability of concrete with and without PFA.
西北高寒干燥地区的碾压混凝土工程，由于引气困难，导致其抗冻耐久性得不到保证。
Freezeproof durability of roll compacted concrete engineering in northwest cold and dry areas can not be guaranteed because entrainment of air is difficult.
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.
通过对试验数据的整理分析，给出提高混凝土构件的表观抗冻耐久性的合理配合组成。
After analyzing the trial data, it gives the reasonable mix proportions for enhancing apparent freezing and thawing resistance durability of concrete member.
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.
最后，本文提出用BP神经网络预测混凝土抗冻耐久性系数的方法。
Finally, a new approach (BP Network) to predicting the durability factor of concrete has been proposed here.
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.
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.
矿渣混凝土的抗冻融耐久性明显优于同等级的普通混凝土；
The freeze thaw durability of GGBS concrete is much better than the same strength OPC concrete.
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.
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.
混凝土抗冻融300次时，动弹性模量为97%，混凝土具有优良的抗冻融耐久性。
The concrete with this product has excellent anti-frost durability, with a relative dynamic elastic modulus of 97% after 300 cycles of freezing-and-thawing.
研究了具有高流动性的流态混凝土的配比、流动性、早期裂纹扩展、强度、收缩、碳化和抗冻融性，这种混凝土无论在成本上还是性能上都是非常可行的。
Mixture proportions, flowability, crack propagation at early ages, strength, shrinkage, carbonation and the freezing and thawing resistance of flowing concrete with high flowability were investigated.
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.
研究结果表明：碾压混凝土抗冻耐久性的最佳含气量为5%。
The test results are shown: The optimum air content value for RCC resistance to frost-thaw durability is about 5%.
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.
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.
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.
阐述了提高混凝土抗冻融耐久性的措施，分析了引气剂对提高混凝土抗冻融的效果及其影响因素。
Through the analysis of the damage mechanism of concrete freezing and thawing, the article puts forward some measures to improve the durability of hydraulic structures.
在混凝土中掺加聚丙烯纤维能有效地提高混凝土材料的抗裂性、抗冲击性、抗冻性能、改善混凝土的抗疲劳特性。
The properties of crack resistance, impact resistance, frost resistance and fatigue resistance of cement were improved by adding polypropylene fiber.
在混凝土中掺加聚丙烯纤维能有效地提高混凝土材料的抗裂性、抗冲击性、抗冻性能、改善混凝土的抗疲劳特性。
The properties of crack resistance, impact resistance, frost resistance and fatigue resistance of cement were improved by adding polypropylene fiber.
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