| 1. | Experimental study on grain composition of new filling material
新型充填材料颗粒级配试验研究 |
| 2. | Theory of granulartity
颗粒级配理论 |
| 3. | Increasing its strength by adjusting granularity of sic is an effective way to optimize its thermal shock resistance
通过调整sic的粒度、颗粒级配和加入量提高抗弯强度是优化其抗热震性能的有效方法。 |
| 4. | The best particle size gradation of portland cement and its added cementitious materials suitable for preparation of high performance concrete
适于配制高性能混凝土的硅酸盐水泥及其胶凝材料的最佳颗粒级配 |
| 5. | The bodys slip - remained level and erectile capability in high & media pressure casting is defined , and the relationship between which and the work data such as slip temperature content of fine clay grain size distribution and press procedure is introduced too
介绍了高中压注浆成形坯体的挺形性、空浆性以及它们和泥浆温度、泥浆塑性土含量、泥浆颗粒级配以及压力制度的关系。 |
| 6. | Based on the close packing and grain composition theory , a new anti - gas channeling lightweight high performance cement slurry system has been developed with industrial drift beads as lightweight additive and superfine gel as strengthening agent
摘要基于紧密堆积和颗粒级配理论，研制了一种以工业漂珠为减轻剂、以超细胶凝材料为增强剂的新型低密度、高强度防气窜水泥浆体系。 |
| 7. | Abstract : the body ' s slip - remained level and erectile capability in high & amp; media pressure casting is defined , and the relationship between which and the work data such as slip temperature content of fine clay grain size distribution and press procedure is introduced too
文摘:介绍了高中压注浆成形坯体的挺形性、空浆性以及它们和泥浆温度、泥浆塑性土含量、泥浆颗粒级配以及压力制度的关系。 |
| 8. | The toad nutrient of floods increases as the sediment concentration increases , and there is nearly a linear relationship between them , by analysing the particle size of the sediment , we can conclude that the reason of the liner relationship is the resourse of flood nutrient and the sediment nature
通过对洪水中下层泥沙做颗粒级配分析，推断出这种结果主要是由洪水养分成因及洪水中下层泥沙粒径特性决定的。 |
| 9. | In order to know the characteristics of the material , analysis on the particle gradation and the related tests on seepage and seepage deformation are made , with which the problems related to the cushion layer material mainly composed of the natural sandy gravel are solved , and the construction demand is met as well , which can provide a reference for the other similar project
为掌握其特性，进行了颗粒级配分析、渗透和渗透变形等项试验，研究解决了以天然砂砾料为主的垫层料的水力学指标问题，满足了工程需要，可为类似工程应用提供参考。 |
| 10. | In this paper , the so preparing self - compacting concrete with low and middle strength using super fine mountain sand artifical sand and phosphorus slag is studied systemically . through the study the influence of the shape , the proportion of the dust and the grade of sand to the workability and the mechanical property of self - compacting concrete , it is found that super fine mountain sand artifical sand are not suit to prepare low and middle strength self - compacting concrete , but when they are combined and the additive and assistant band material are used , c20 - c40 high performance self - compacting concrete is prepared ; the corresponding additive is developed to solve the delamination caused by the low proportion of banding material ; the evaluating system for the workability of low and middle strength self - compacting concrete is built ; the controlling method for production , construction and curing was set up . and the result of the research is applied into several projects
通过分析特细山砂和机制砂的颗粒形态、粉末含量、颗粒级配等特性对自密实混凝土的工作性能和力学性能的影响，发现特细山砂、机制砂不宜单独用于配制中低强度等级自密实混凝土，宜将特细山砂和机制砂进行合理复配，并选择合适的外加剂和矿物掺合料，优化配合比设计，可生产c20 c40中低强度等级自密实高性能混凝土；研制开发出了具有高效减水、保塑、抗离析功能的外加剂，有效解决了中低强度等级自密实混凝土由于胶凝材料用量少而出现的离析、泌水问题；应用正交设计方法，对因素和水平进行合理选择，确定了生产中低等级自密实混凝土的最优配合比；建立了中低强度等级自密实混凝土的工作性评价体系；提出了生产、施工及养护的质量控制技术方法。 |
