The durability of concrete is important problem.
混凝土的耐久性已成为重大课题。
The durability of concrete is influenced by alkali aggregate reaction(AAR).
碱集料反应是影响混凝土耐久性的重要方面。
Durability of concrete is an important subject respected by international engineering circle.
混凝土耐久性是国际工程界关注的重大课题。
Doing experiments is an important method in the research of durability of concrete structures.
混凝土结构的耐久性试验是研究结构耐久性的重要手段。
Adding blend into cement is one of the important measures to improve the durability of concrete.
在水泥中掺加混合材是改善混凝土耐久性能的重要措施之一。
The durability of concrete is an important research subject in the international engineering industry.
混凝土耐久性是国际工程界的重要研究课题。
It is crucial to prevent underground tunnel structure from cracking and improve durability of concrete.
地下隧道结构防止混凝土开裂和提高混凝土的耐久性是至关重要的一环。
Research of recent years pay more attention to the durability of concrete but neglected the cost factor.
近几年的配合比研究大多侧重于混凝土的耐久性，忽略了成本因素。
The carbonation of concrete is one of the main factors which effect the durability of concrete structure.
混凝土碳化是影响钢筋混凝土结构耐久性的重要因素之一。
This article gives a few of practicable synthetic measure to improve the durability of concrete structure.
本文提出一些实用的提高混凝土耐久性的综合措施。
Most damage of concrete runway in cold region is not caused by load but by the poor durability of concrete.
寒冷地区机场混凝土道面常常发生非荷载引起的破坏———耐久性破坏，严重影响飞机的安全起降，必须尽快予以解决。
Alkali aggregate reaction is one of the important factors that affect the durability of concrete structures.
混凝土碱-骨料反应是引起混凝土耐久性下降的主要原因之一。
The research shows that permeable formwork can obviously improve the surface quality and durability of concrete.
试验研究和应用结果表明，透水模板能显著改善混凝土的表面质量，有效提高混凝土的耐久性。
Alkali aggregate reaction (AAR) is one of the important factors that affect the durability of concrete structures.
混凝土碱-骨料反应(aar)是引起混凝土耐久性下降的主要原因之一。
The durability of concrete can be defined as its resistance to deterioration resulting from external and internal causes.
混凝土的耐久性被定义为抵抗外部和内部原因导致的恶化的能力。
All these results are in serious seepage of the structure, which leads to damage of durability of concrete and reinforcement.
原结构较大面积的严重渗水致使混凝土的耐久性能受损、钢筋严重锈蚀是问题产生的主要原因。
Therefore, based on the analysis and study of durability of concrete structure, it is available for reference for the designers.
为此，本文对混凝土结构的耐久性进行分析和研究，供有关设计人员参考。
This article discusses the influences of fine slag powder to workability, compressive strength and durability of concrete in the test.
通过试验讨论了矿渣微粉对混凝土工作性能、抗压强度及耐久性的影响。
Preventing or inhibiting the corrosion of reinforcement in concrete is a key approach to improve the durability of concrete structures.
防止和减缓钢筋腐蚀是改善和提高混凝土结构耐久性的主要途径。
Made shell technology has improved the dispersion of cement, so that the quality and durability of concrete are improved significantly.
造壳技术；改善水泥的分散性，使混凝土的质量与耐久性得到显著的提高。
In this article, author shows the methods of improving durability of concrete structure from surrounding, design, materials and construction.
从环境、设计、材料和施工四方面介绍了提高混凝土结构耐久性的方法。
As the factors affecting the durability of concrete are complex, it is often difficult to grasp the durability indicators during the designs.
由于混凝土耐久性的影响因素复杂，设计时往往难以把握具体的耐久性指标。
The process of hydration and solidification of young concrete have a significant influence on the long term strength and durability of concrete.
早龄期混凝土的水化、凝结过程对混凝土的后期强度、耐久性是非常重要的。
Crack, the common problem existing in concrete material, is one of the main reasons which influence the long-term durability of concrete structure.
裂缝是混凝土材料普遍存在的问题，也是影响混凝土结构长期耐久性的主要原因之一。
Concrete mingled with fly ash, slag and silica fume and other admixtures are thought to effectively improve the anti-sulfate durability of concrete.
在混凝土中掺入粉煤灰、矿渣和硅灰等掺合料被认为能有效提高混凝土抗硫酸盐耐久性。
Finally, the quantitative design method for the freeze proof durability of concrete is suggested, according to the present condition of the country.
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。
This paper discusses the main content of the research on the structure durability of concrete and the new method to improve the structure durability.
阐述了混凝土结构耐久性研究的主要内容和提高混凝土结构耐久性的新方法。
The study on the durability of concrete is a hot spot of today's academic circles in which the study on the corrosivity becomes the centre of attention.
混凝土的耐久性研究是当今学术界的热点课题，其中腐蚀性研究更引人关注。
The study on the durability of concrete is a hot spot of today's academic circles in which the study on the corrosivity becomes the centre of attention.
混凝土的耐久性研究是当今学术界的热点课题，其中腐蚀性研究更引人关注。
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