The paper discusses mechanism performance , durability and resistance to de - icing salt concrete , this kind of concrete is made with air - entraining agent or silica fume and used in the trial section construction of benxi - dandong freeway ' s charge square which is located in dandong 本文通过在混凝土中掺入引气剂或硅粉，来配制抗除冰盐混凝土，并对其进行力学性能和耐久性测试，重点试验其抵抗盐冻能力，并用于本丹高速公路丹东段的收费广场试验路施工。
Abstract : the paper analyses and compares the current test methods of deicer - frost in different countries . on the basis of the study of influence on deicer - frost scaling of concrete , the test method of deicer - frost was further improved , and an easier preparing method of samples for deicer - frost and a quantitative evaluating method of frost - resistance were put forward 文摘:在分析、比较不同国家现行的盐冻试验方法，在研究影响混凝土除冰盐剥蚀因素的基础上，对盐冻试验方法进行改进，提出更简易的盐冻试件制备方法和抗盐冻性能的量化评价方法。
The problem the snow causes influences the people ' s lives and impedes the economic development . meanwhile the transportation infrastructure such as highway intercity and airstrip needs a great amount of deicing salts to maintain the bare road . therefore from 1980s , many areas and countries such as north american , north europe , japan have greater and greater demands on the deicing salts , about 20 million tons per year , only japan needs 200 to 300 thousand tons per year 在我国和世界上许多国家的高寒地区，冬季冰雪已成为严重的公害，积雪引起的问题不仅给当地人民的生活带来困难，而且阻碍经济的发展；此外，城市高速公路，机场飞机跑道等交通设施对冬季除冰剂的使用也日益迫切，因此，九十年代以来，北美、北欧、日本等多雪地区和国家，对融雪产品的需求量与日俱增，年需求量在2000万吨左右，其中仅日本就需20 30万吨。
1 . introduction for the pre - stressed concrete bridges in offshore and cold area , due to the corrosion effect of the corrosive agents in the environment to the structures , the safety of the bridge structures will decline with the service time , and this will affect the normal use of the bridge structures in the residual service time 第一章绪论处于沿海地区及冬季寒冷地区的预应力混凝土桥梁，由于所处环境或冬季所采用的除冰盐中氯离子的腐蚀作刚，导致结构安全性的降低，使结构不能保证其在后续使用期内的正常使用，造成较大的经济损失。
This paper which is based on these facts that in qinhuangdao the surface layer of cement concrete pavements have been loosed and destroyed because of snowfall and splashing salt in winter analyzed the causes deeply . the causes include physics factors , chemistry factors and construction factors that are caused by defects of our conventional construction 本文根据秦皇岛市水泥混凝土路面由于冬季降雪、喷洒除冰盐而引起的表层松散破坏的现状，从物理、化学及传统的施工工艺不足等因素，进行了理论分析，以此来确定水泥混凝土路面表层松散是否需要补强或功能性养护。
This paper according to related survey and experiment data , analyses some factors of frost and salt resistance based on the cement damage of concrete pavement of frost resistance mechanism , which may effect on the northeast area highway cement frost resistance of concrete pavement , then raises major measure of frost and ask resistance on cement concrete pavement based on the result of large quantities freeze and melt circulating experiment 摘要根据现场调查及相关试验数据，从水泥混凝土路面抗冻性破坏机理出发，分析了冬季除冰盐对东北地区高速公路水泥混凝土路面抗冻性能的影响，提出了影响水泥混凝土路面抗盐冻性能的主要因素，并根据实验室内大量冻融循环试验的结果，提出了提高水泥混凝土路面抗盐冻性能的主要措施。
Cma , as an alternate deicer , tends to inhibit corrosion and appears to be relatively harmless to the environment . but cma is expensive because of the high price of its material , and it has less ability in melting ice than sodium chloride . besides these , cma sticks to wet surfaces and can congeal to form hard chunks , difficult to store for a long time , dusty and a strong vinegar smell when spread 而cma是对氯化物盐除冰剂的重大改进， cma具有无污染，环保的特点，对金属几乎无腐蚀，但由于原料价格昂贵，使得cma的价格不菲， cma对冰的融化能力不如氯化钠， cma易结块，不宜长期储藏，在撒布时形成的粉尘及刺鼻的酸味亦是需要改进的地方。
All of these aspects need to be improved . considering the disadvantages of the two kinds of the deicers , great amounts of the science data are referred in the research experiment , by developing the main materials and the additives , a new kind of deicer : pal is founded . not only does pal remain the advantages of the traditional deicer such as cheap materials and low freezing point : - 43 . 8 c , but it has the character of cma , low corrosion to steel and concrete 针对上述除冰剂的缺点，本课题收集了国内外大量的相关科技文献，通过对主体物料和添加剂两方面的改善，寻找到一种新型除冰剂pal ，它既保留了传统除冰剂的优点，原料廉价易得，低冰点，可达- 43 . 8 ；又兼有cma的优点，对钢铁几乎无腐蚀，对混凝土无不良影响。
