耐久性

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况，致使水泥混凝土路面的承载力下降。通过水泥混凝土路面弹性地基薄板的设计理论，深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因，通过采取一定措施改善砼路面面层与基层之间支撑条件，提高了水泥混凝土路面的耐久性和稳定性。

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况，致使水泥混凝土路面的承载力下降。期刊文章分类查询，尽在期刊图书馆通过水泥混凝土路面弹性地基薄板的设计理论，深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因，通过采取一定措施改善砼路面面层与基层之间支撑条件，提高了水泥混凝土路面的耐久性和稳定性。

The addition of elastic rubber material into concrete can resist the propagation of the cracks and increase its ability to absorb strain energy and its impact resistance.

橡胶改性混凝土由于其中的橡胶作为弹性体能够约束微裂缝的产生和发展，并吸收震动能，改善混凝土的抗冲击性，提高混凝土的抗震性能及耐久性等。

THE PROPERTIES OF CEMENT-BASED MATERIALS CONTAINING RUBBER The addition of elastic rubber material into concrete (Concrete that is added with elastic rubber material) can resist the propagation of the cracks and increase its ability to absorb strain energy and its impact resistance.

橡胶改性水泥基材料的性能研究橡胶改性混凝土由于其中的橡胶作为弹性体能够约束微裂缝的产生和发展，并吸收震动能，改善混凝土的抗冲击性，提高混凝土的抗震性能及耐久性等。

Results show that when exposed to the severe environment of salt lakes, both OPC and APC display poor durability, though HSC shows excellent bittern-freezing-thawing durability, the corrosion resistance against bitterns is not so good, while non-air-entraining HPC shows outstanding performance in both bittern-freezing-thawing durability and corrosion resistance against bitterns, and the performance can be farther improved by adding fibers.

结果表明，在盐湖地区的严酷条件下，OPC和APC的耐久性不好，HSC具有优良的抗卤水冻蚀性，但是其抗卤水腐蚀性比较差，高强非引气HPC具有优异的抗卤水冻蚀性和抗卤水腐蚀性，纤维增强HPC的效果更佳。

The paper relying on project practice of the express highway from Taiyuan to Changzhi of Shanxi Province, according to demanding of "Technical Specifications for Construction of Highway Asphait Pavements ", combining with own region climate characteristic and concrete design, and construction request, it has carried out SBS modified studying on shell-90# asphalt, so drawing a conclusion: 1. Having studied the quantity of SBS modifier"s effect on the temperature sensibility, the high temperature stability, the low temperature resistance to cracking , elasticity and the durability of asphalt ,meanwhile, having studied the quantity of SBS modifier"s effect on the water stability, the high temperature stability , the low temperature resistance to cracking of asphalt mixture, having compared SBS modified bitumens various function. As a result ,when the amount of SBS added is 5%, every function is comparatively even.

本论文依托山西省太—长高速公路建设的工程实践，按照《沥青路面施工技术规范》的要求，结合本地区的气候特点和具体设计、施工要求，对壳牌90#沥青进行了SBS改性研究，得到如下结论：(1)研究了SBS改性剂用量对沥青的温度敏感性、高温稳定性、低温抗裂性、弹性及耐久性的影响，同时研究了改性剂用量对沥青混合料的高温稳定性、低温抗裂性和水稳定性的影响，比较了SBS改性沥青的各项性能，结果表明当SBS掺加量为5%时，各性能较为均衡。

Results show that w/b is not the factor influencing chloride penetration of ACT concrete, as the ion penetration of ACT specimens is all higher than 2000 Coulombs and can even be poorer than 10000 Coulombs.

致密配比法设计之混凝土，随著水泥浆量V(下标 P少，而拌和水量愈低，添加适量的卜作岚材料及低水胶比的氯离子，电渗量均小於2000 C，甚至低於1000 C以下，呈现出优异的防蚀耐久性。

It is discussed for increasing the quality of surface layer's concrete by the methods of improving the curring,reducing the water-cement rati...

文章从改善混凝土养护条件，降低表层水灰比，科学制定保护层厚度等方面分析了提高表层混凝土质量从而提高构件耐久性的方法。

In addition, the dampers have been successfully endurance tested and are maintenance free.

此外，其阻尼杆部分已经成功地通过了耐久性测试并且在使用过程中无需任何维护。

Link-driven feed mechanism to ensure long durability and stable feed.

连杆式送料机构，耐久性好、送料平稳

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。