The results show , the concrete produced by using pulverulent coal - fired ash has very nice durability 结果表明，掺细化粉煤灰高强混凝土表现出优良的耐久性。
2.
Transport and handling . rail cars and road tankers . permanent stations for the loading and unloading of pulverulent products 运输与装卸.轨道车和道路罐车.粉状产品的装载和卸载用永久车站
3.
Rolling stock . rail trucks having pneumatic emptying , for the transport of loose pulverulent products , with emptying under a maximum operating pressure of 2 , 67 bar - dome and closing device 铁路机车车辆.在最大压力为2 . 67bar的散装粉状产品运输用气动排空铁路货车.圆盖和封闭装置
4.
All results show , the performance of the high - strength concrete with mixture of pulverulent coal - fired ash is higher than the standard high - strength concrete , and is increased significantly 综合研究结果表明，掺入磨细粉煤灰后的高强混凝土的各种性能均高于基准高强混凝土，得到了良好的改善。
5.
The results indicate that the all properties of pulverulent coal - fired ash are obviously higher than that if original coal - fired ash . based on the above studies , the studies on the strength changing mode of concrete with pulverulent are carried out . arrange of results are attained 首先对比研究了磨细灰与原状灰在高强混凝土中的作用，结果表明，磨细粉煤灰的各种性能均好于原状粉煤灰，这为下一步性能研究奠定了基础。
6.
The concrete with the a 28 days compressive strength of c60 can be produced by using suitably pulverulent coal - fired ash , the higher the quantity of pulverlent coal - fired ash mixed in concrete with 10 % - 20 % is , the higher the strength of concrete is . then , we carry out the studies on the technics properties that reflect the comprehensive properties of concrete . we find that the separating and excreting water of the concrete can be avoided efficiently when the pulverulent coal - fired ash and superplasticizer are used suitably , the higher the quantity ration of coal - fired ash and super plasticizer are , the higher the caving degree of the concrete is 在上述研究基础上，对掺细化粉煤灰后混凝土的强度变化规律进行了分析研究，在适当配合比及高效减水剂的作用下，掺一定数量的磨细粉煤灰，在28天龄期可以配制出抗压强度高于c60的粉煤狄高强混凝土；当磨细粉煤灰以10 - - 20不同的掺量分别掺入粉煤灰中时，粉煤灰高强混凝土的强度随掺量的增大，各龄期强度均逐渐降低；在掺入8硅灰+ 10粉煤灰可使高强混凝土的各龄期强度都有很大增加，当单掺8粉煤灰时，混凝土的后期强度增加较快；粉煤灰混凝土必须加入高效减水剂辽十l彬技术人学硕十学位论文后j ”能达到高强的目的。
