The Study On The Properties Of High -strength Concrete Mixed With Pulverulent Coal Fired Ash

The study on the high-strength concrete is not systematic in our country. So,based on the suitable materials and methods,the technics properties and mechanics properties of the high-strength concrete are been studied .The comparative studies on the effect of the pulverulent coal-fired ash and original coal-fired ash on the high-strength concrete,form a consolidate foundation for all studies on the properties studies. 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. 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.In the final part of the thesis work,we carry out the studies on the durability of the concrete with the mixture of pulveralentcoal-fired ash. The results show,the concrete produced by using pulverulent coal-fired ash has very nice durability.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.