Research On The Effets Of The Mechanism Of Iron Tailings Sand Performance To Concrete

Today. the energy and environmental issues has been upgraded to the social problems. but China is a country with extensive resources, the various existing favorable attention resource development and utilization If this valuable resource. iron ore tailings. tailings resource-rich iron. close to 5 billion stock pile T. but a large area of low utilization of tailings and environmental pollution Utilization of iron ore tailings facing problems. Therefore, suitable for building materials is an effective way of tailings comprehensive utilization of tailings. China is in the construction phase. construction About one-third of the country’s total energy consumption. the performance of all aspects of this paper. iron tailings concrete were studied.This paper studies the impact of iron ore tailings sand surface area of concrete. Through experimental study found that with iron sand tailings surface area increases. the mechanism of the specific surface area of the compressive strength of concrete sand basically no significant change. but the specific surface area of sand concrete mixture slump influence is particularly evident when sand surface area increases. the slump concrete mixture is in decline.In this paper. the effects of different properties of concrete powder content were studied and discussed. along with changes in the powder content of the sand that is constantly improving. water concrete is also appropriate to further increase. followed by a strength reduced. With the changes in the powder content of sand that is constantly improving. trends elastic modulus relatively large. first rising. when it reaches a certain point. it declined. Dust content below 10%. the smaller the impact on concrete shrinkage. when the dust content greater than 10%. concrete shrinkage evident in the increase.In this paper. dust content on properties of mortar were studied experimentally and discussion. with increasing powder content, the mortar is getting better cohesion. leading to decreased mobility mortar. so that the content of the powder flowability of mortar has a very significant impact.In this paper. under the influence of iron tailings and tailings sand iron double doping case on concrete performance study and discussion of the mechanism of iron ore tailings sand concrete improves the workability of concrete. iron and iron tailings sand tailings Mixed Concrete also improve the work of the concrete to the work of these two aggregate concrete has brought a very good sister. than pure cement concrete work performance has significantly improved. But also improves the flow of concrete. Did not have any significant change in other areas. For the study of the properties of sand concrete remains to be further studied.