预养护

PG was used to produce different types of binding materials as β-hemihydrate gypsum,Ⅱanhydrate gypsum and α-hemihydrate gypsum and the relevant factors were also studied systematically including the pretreatment methods of raw material, preparation process, the material properties, the mixing proportions, curing conditions and the hydration mechanism of different systems.

对磷石膏制备胶结材进行了深入、系统研究，包括β-半水石膏、Ⅱ-无水石膏的原料预处理方式、制备工艺、性能及其复合胶结材配比、养护、性能与水化硬化机理，α-半水石膏的制备工艺及其性能影响因素，二水磷石膏改性胶结材的配比、养护、性能及其改性机理。

The calculated results were proved to be reliable throuch comparing with actual measured results. This method provides a theory basis for analyzing developing tendency of pavement evenness, and gives a technical supporting for the appreciati...

结果表明，给出的计算和预估方法可靠，为分析路面平整度的发展变化规律提供了一定的理论基础，为评价沥青路面的使用性能及路面的维修养护提供了技术支持。

As long as precured period of fresh concrete was sufficient, the air bubbles would not make any disadvantage. At the same time entraining air in concrete improved the bleeding and isolation in concrete, the long team performance and durability of concrete were improved obviously.

只要对新拌混凝土进行充分的预养护，对引气混凝土进行蒸养并不会对混凝土产生不良影响，同时由于引气后改善了混凝土泌水和离析，混凝土的长期性能和耐久性将会得到明显的改善。

Different climatic regions, different subgrade, pavement structure and materials, different traffic conditions, the experience of different construction, as well as the conservation of the history of different road performance of the road have a major impact, in order to ensure the implementation of pre-effect of conservation measures and technological advantages, Conservation Measures in the pre-determined and the timing of the selection process, there is a need to follow the following principles: technology to meet the requirements of the economically more savings, the performance characteristics in line with the project.

不同气候区域、不同的路基、路面结构和材料、不同的交通状况、不同的施工经验以及不同的路面养护历史对路面的性能都有重要的影响，为了保证预养护措施的实施效果和技术优势，在预养护对策确定及时机选择过程中，需遵循以下原则：技术上满足要求，经济上比较节约，性能上符合工程特点。

In target ing using concrete optimum , heat preservation, humidity preservation, twice vibr ations, twice compactions, strictly controlling the temperature and so on, the a ppearance of split can be avoided and the durability of concrete can be improved .

分析和总结了预拌混凝土现浇楼板裂缝产生的原因、处理方案及防治措施，综合采用混凝土试配优化、保温保湿养护、二次振捣、二次模压、严格控温等施工措施，可有效地避免和减少裂缝出现，提高混凝土的耐久

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。