With the acceleration of construction, highways, railways, bridges and other infrastructure construction and urbanization, rapid development of urban renovation and construction industries, a number of old buildings, structures, urban infrastructure service life expires removed, will produce increasingly more construction waste. Currently the vast majority of construction waste without any treatment, by the construction unit shipped to the outskirts, open dumps or landfills. Construction waste in large quantities, components variety, complex in nature, improper disposal will reduce soil quality, impact to human living environment. Construction waste processing and recycling, is the best way to protect the environment and save resources.
Construction waste recycling and treatment technology approach
In the construction waste, more than 80% of the waste concrete, waste tiles, decoration materials and other building materials used. According to the building waste recycling experience better country can be divided into three levels:
(1) lower use: After crushing the waste concrete as the building foundation cushion or road base, which is the use of waste concrete easiest method.
(2) intermediate use: after crushing the waste concrete blocks concrete bricks, pavement tiles and other products.
(3) Advanced use: the waste concrete crushing, screening, sorting, after clean as recycled aggregate, instead of part of the natural sand aggregate production of recycled aggregate concrete. The study showed that can be added directly to the commodity as an aggregate in concrete replace 10% to 30% of the natural aggregate, this is the most valuable waste concrete approach. Made with recycled concrete recycled aggregate is a green concrete.
In developed countries, after the construction waste recycling of renewable materials have been widely used in backfill, road construction, road and rail cushion, etc., vibration foundation, retaining wall and slope stability and reinforcement work also has applications. But compared with natural materials, the strength of recycled materials is weak, high water absorption, poor durability, which limits their application in the structural member to a certain extent. Experimental studies show that a large number of foreign countries, under certain conditions, the recycled material can be used structure.
Currently, Germany and Japan have been recycled material structural applications success stories, such as Germany’s ViblerWeg and Waldspirale building, Japan ACROSShin-Osaka building., Japan’s ACROSShin-Osaka building. Construction waste recycling is still of great value, and Either way, the first step of construction waste is the waste concrete crushing, crushing shows the importance of the product and its good prospects for development ʱ?? Liming Heavy Industry produce a variety of types of mobile crushing plant, because of its strong mobility, therefore particularly suitable for use in construction waste crushing. We welcome you to join us!