| 1. | Methods for testing uniformity of concrete admixture 混凝土外加剂匀质性试验方法 |
| 2. | Methods for testing uniformity of concrete 混凝土外加剂匀质性试验方法 |
| 3. | Measuring method for the homogeneity of glasses by laser interferometry 激光干涉仪检测玻璃匀质性的测量方法 |
| 4. | So i study on this problem . the device were designed by myself to evaluate the homogeneity of concrete 本文采用自行设计的匀质性测试装置,对轻集料混凝土匀质性进行研究。 |
| 5. | Under the conditions of high efficiency water - reducing agent , the homogenization of starch mixed composite powder is better than that of blank cement and only mixed fly ash 在高效减水剂存在的情况下,掺复合粉的胶凝材料浆体匀质性优于空白水泥与单掺粉煤灰。 |
| 6. | The concrete construction specifications currently in effect regarding the standard for evaluation of homogeneity of construction quantity of concrete are most applied to middle and lower strength concrete , but not to high strength concrete 现行混凝土施工规范对混凝土施工强度匀质性评定标准,多适用于中低强度混凝土范围,不适用于高强混凝土。 |
| 7. | The result indicate that the lightweight aggregate with normal shape are easy to control than that with globular shape . the homogeneity of concrete can be improved by prewetting the ceramisite agitator , and should shorten vibrating time 研究结果表明,普通型陶粒混凝土较圆球型陶粒混凝土匀质性更容易控制;对吸水率较大的陶粒可以通过预湿来改善匀质性,另外应尽量缩短振动时间。 |
| 8. | We have researched the factors that influenced the homogeneity of concrete that include the lightweight aggregate , w / c , admixture and vibrating time . we have also studied on the influence the homogeneity of concrete to the strength and the permeability of the concrete 从影响轻集料混凝土匀质性的因素出发,研究了轻集料、水灰比、外加剂、振动时间等对拌和物匀质性的影响及匀质性对强度、渗透性的影响。 |
| 9. | In addition , vibration has great effects on uniformity of high fluid structural lightweight aggregate concrete . there is obvious separation of lightweight aggregate from mortar in mixture of high fluid structural lightweight aggregate concrete with slump of 220mm when vibrated for 10 minutes 此外,振动对大流动性轻集料混凝土的匀质性十分不利,对坍落度220mm左右的轻集料混凝土拌和物,振动时间超过10秒,就会出现明显的分层现象。 |
| 10. | Nonlinear constitutive relations are discussed for analyzing the stress distribution , the appearance and development of the cracks , as well as the behavior of the boundary conditions of the two way slabs respectively . in the light of the experimental research on r . c . two way slabs under static loading , the behavior of yield line , the load deformation curves and the crack yield , plastic limit loads of slabs with different supporting conditions are studied 根据反映双向板混凝土材料非匀质性的本构关系,分析了双向板在荷载作用下的变形、屈服、裂缝和破坏的形态特性,并对钢筋混凝土双向板在不同支承条件下的塑性极限荷载、正常使用挠度(曲线)和截面设计作了进一步研究。 |