Barium sulfate is widely used, and the most important of which is used to prepare ray shielding materials, it is the main component of barite barium sulfate can effectively shield ray, The safety of nuclear radiation has been the key to further development. Since the birth of nuclear technology has been rapid development in nuclear power, military, education, scientific research and medical and other fields, but the security is still an inevitable problem.As we know, the ordinary shielding materials, such as cement-based shielding material with low price, wide range of raw materials, easy construction and other characteristics,it is the most widely used ray protection materials currently. But the ordinary cement shield also has been its drawbacks with poor effect, high cost.
Barium sulfate radiation mortar can effectively shield radiation . The material is composed of cement-based cementitious materials, heavy aggregate and additives, with water after mixing a little auxiliary construction of nuclear anti-materials.It has a good ray shielding performance, mechanical properties and construction performance, in addition ,barium sulfate radiation mortar also has good water resistance and alkali corrosion characteristics.Because of these characteristics, the development of such materials have been taken seriously. However,high-density radiation-resistant mortar is prone to stratification, segregation and sagging, which is a common problem with such materials.
Barium sulfate is prepared by adding a binder material, aggregate, admixture and water to prepare mortar to be in line with barium sulfate radiation protection mortar. Wherein the aggregate consists of barium sulfate sand, quartz sand and barium sulfate powder; the admixture comprises a superplasticizer, a water retaining agent, an antifoaming agent and a dispersible latex powder. The mass ratio of each component is 23.8 ~ 30% of the total mass, 38.2 ~ 69.23% of the total aggregate, 0 ~ 31% of the total aggregate and 0.39% of the total mass, 1.16%.The barium sulfate radiation prepared by the above method has good mechanical properties, water resistance and construction performance, and has good shielding effect on γ-ray. At the same time, it has been proved by experiments that the construction performance has been solved well, and it has good shielding performance, mechanical properties and waterproof performance. By optimizing the composition can obtain a barium sulfate composites with highly shielded ray, but also broaden the application of barium sulfate, which make barium sulfate better protect human safety