Degradation Mechanism And Quality Of Concrete Under Plateau Environment Its Impact

Reinforced concrete as a common building materials,due to superior performance,durability,low prices,in the construction is widely used.Due to the occurrence of premature failure of the reinforced concrete at home and abroad,the academia has carried out a lot of research to clarify the mechanism of the deterioration of reinforced concrete and prevent the deterioration of concrete by design and construction.However,there are relatively few studies on the mechanism of concrete deterioration in high altitude environment,and the correlation between concrete deterioration and construction quality is lacking.In view of this,this article based on the existing theoretical basis,combined with the actual construction of plateau construction,for the specific situation of the construction of highland areas,focusing on the highland environment led to the main factors of concrete deterioration and how to strengthen the construction management,improve the construction technology to enhance the quality of concrete,Thus inhibiting the degradation of concrete in the plateau area,and ultimately to enhance the durability of concrete purposes.In this paper,we first understand the failure of the concrete in the environment of the plateau,which is mainly due to the damage caused by the freeze-thaw cycle.At the same time,the unique carbonation conditions of the plateau cause concrete carbonization and inland existence,and the carbonization rate Leading to the earlier neutralization of the concrete side of the sun,the loss of the protection of steel and lead to premature destruction of the structure.Secondly,through the construction of some of the technical adjustment of the project to find the anti-freeze-thaw cycle and concrete surface carbonation of concrete damage caused by the way,mainly to reduce the porosity for the purpose of enhancing the density of concrete to prevent the infiltration of concrete into the concrete Internal purpose of the waterproof measures and to improve the strength of concrete for the purpose of adding additives and other methods.The paper studies the construction of a separate technical measures to find the main reason for the deterioration of concrete to find the most effective measures to solve the problem of concrete degradation.Thirdly,the paper summarizes the matters needing attention in the construction management to prevent the alkali aggregate reaction and the technical measures that can be taken,including the control of the alkali content and the control of the aggregate activity by controlling the alkali content.Substances,to prevent water infiltration,etc.to prevent alkali aggregate reaction.Finally,combined with the conditions of highland environment and construction practice,from the management put forward to improve the quality of concrete construction measures.