Chlorine-free,microsilica ，silica fume,GGBFS ，GGBS ，Ground Granulated Blast Furnace Slag, no sodium or less sodium and durability of concrete will not have a negative impact on the slag - cinder compound activating agent, thereby achieving the slag mixture in the production of the slow introduction of a certain number of thermal power plant without reducing cold cinder the quality of slag. Experimental study on the use of orthogonal excitation of this compound on slag - cinder early strength cement mortar compound the effects of X-ray diffraction, thermal analysis, methods such as scanning electron microscopy study after adding activating agent slag - cinder composite cement hydration process and microstructure analysis of the excitation mechanism. The results show that: The activating agent can not only improve the slag - cinder early strength cement compound, GGBFS,and the latter can the steady development of strength. when coal and other the quality of the proportion of slag to replace 25% do not reduce the slag - cement cinder 28d composite strength. add after the fine grinding of cement cinder variation of flow properties can be improved through the addition of superplasticizer.GGBFS

 Danish Great Belt;
    Marine environment is a concrete finds itself one of the most severe environmental conditions, concrete structures need to withstand high mechanical strength and man-made force requirements, structure, easy-to-failure, while the concrete structure used in this environment will be subjected to freezing, storms, and water and other natural factors, the role of concrete subjected to injury tends to shorten its durable life. The existing ordinary concrete structure in this environment, the mechanical performance and durability problems have become increasingly acute, and thus had to spend a huge cost to its annual maintenance, this problem caused widespread concern around the world engineering.

     Danish Great Belt project was first proposed by service life of 100 years, that is ensure that their mechanical properties also provides reinforcement in a hundred years during the period shall not commence Shou rust. To this end, a large number of thematic studies carried out in advance to provide concrete strict technical standards, by providing for a certain amount of silica fume admixture (silica fume) and fly ash concrete to ensure a low permeability; gas and air bubbles by means of quality control assurance the frost resistance; through the silica fume admixture (silica fume) to ensure abrasion resistance (anti-ice red mill); by restricting the activity of aggregate content, alkali limit on the total amount of silica fume admixture (silica fume) and of fly ash to prevent the alkali-aggregate reaction; Sodium Sulfate - the use of sulphate resisting cement and silica fume admixture (silica fume) assurance; through the use of low-heat cement, micro silica fume admixture (silica fume) and fly ash to reduce hydration heat, pouring of concrete used on the internal temperature control of thermal stress cracks.

   大凌河流域属温带季风气候，夏季多雨炎热、空气湿润，冬春少雨，气候干燥，是辽宁省干旱地区之一，有“十年九旱”之称。流域内多年平均降雨量为430—630毫米，降水量年际变化较大，年内分配极不均匀，多集中在7、8月份。多年平均蒸发量一般在1800—2300毫米。多年平均径流量为16.40亿立方米，最大年径流量为35.80亿立方米，最小年径流量3.40亿立方米，7—9月份径流量约占全年的60%。

    白石水库在建设过程中，注意摆脱旧观念的束缚，尽可能采用国际国内先进技术和先进管理方式。对工程的总体布置做到科学规划，布局合理，功能综合化。在水库的基础设施建设方面既满足建设需要，又要适应今后长远发展的要求；在工程实施过程中，坚持按国际工程管理，增加科技含量，广泛采用新材料、新工艺、新技术。比如在施工技术上，对碾压混凝土采用RCD施工工法、RCC混凝土配合比。既保持了RCD混凝土良好层间结合和防渗性能的优点，同时兼有了RCC混凝土高掺粉煤灰、减少水泥用量、降低水化热的优点，从而发展了RCD工法。特别是泄洪排沙底孔全过程仿计算及抗冲材料的研究与应用。底孔全过程方针配筋设计和微硅粉(silica fume)混凝土抗冲磨材料在水利工程上应用达到国内领先水平。这在国际上也是一个重大突破。实践证明，在工程建设中坚持高起点，按现代化的标准，运用现代化的技术，实行现代化管理，是建设一个现代化工程的必要条件。

   Silica fume in oilfield cementing the special-use
  ZYT-S high-activity silica fume is a new type of concrete admixtures. This product is the main ingredient is si02, average particle size is 0.1μm, for the cement, 1%, the color was light gray to carbon black ranging from reaction with the ash properties, and the formation of silicon-rich gel hydration, the intensity is higher than calcium hydroxide crystals, with the cement hydration CSH gel work together, is a highly active water-rigid cementitious material, doped with it makes all the physical properties of concrete indicators improved significantly. Be highly active micro silica bridge, dam concrete, high abrasion resistance, high impact concrete, sprayed concrete admixtures such as an ideal.
     In recent years, micro-silica fume also began to widely used in the major oil fields. Especially in oil field cementing, since the use of micro-silica powder, thereby increasing the anti-body mud-curing properties of high-temperature strength of a recession. In the high-temperature deep geothermal wells and thermal recovery wells have been widely used. The general usage of 8% -15%.

 
   China's current 600 million tons capacity of the survival of a small shaft kiln cement has entered the countdown period. The reporter learned from relevant sources that the National Development and Reform Commission and the Public letter of intention by the Ministry of industry guidance, China's current 600 million tons of small vertical kiln cement production capacity from next year, 2012, with three years out of a cement market, this move will involve more than 3,000 domestic enterprises. This arrangement is the second National Development and Reform Commission released in 2007 after the phase-out plan, once again stepped up efforts to eliminate backward production capacity.

   The nation's largest building materials companies Zhi-Ping Song, chairman of China Building Materials Group, the day before yesterday to participate in the "Fortune CEO Summit" to the CBN reporter confirmed the above statement and said that to speed up the pace out of small cement means that the cement industry will have more opportunities of mergers and reorganizations, change The disorderly competition in the market situation, so that the industry leading enterprises bigger and stronger possible. (microsilica)