Abstract: A reinforcement and bearing capacity calculation method for a self-stressed bridge deck link slab includes: calculating a cross-section moment of inertia of the link slab and a negative moment borne by the link slab; introducing a design self-stress according to stress distribution of the self-stressed bridge deck link slab, whether reinforced or un-reinforced; calculating a cracking moment of the plain self-stressed bridge deck link slab, comparing the cracking moment and the negative moment, proceeding to the next step, or configuring a structural reinforcement as needed; determining a design strength of reinforcement, selecting a reinforcement ratio, and calculating a resisting moment of the link slab; comparing the resisting moment and the negative moment of the link slab, design conditions are satisfied, or configuring the reinforcement ratio and carrying out iterative calculation to obtain a resisting moment; and analyzing stress on the reinforcement and concrete.

Abstract: A carbonized brick of recycled concrete powders and a preparation method thereof are provided, belonging to the field of concrete materials. The preparation method includes: adding composition A to a liquid storage tank; introducing composition B into the liquid storage tank to react with a solid waste solution to generate calcium bicarbonate solution; filling recycled powders into a molding die, decomposing the calcium bicarbonate solution by heat, reacting generated carbon dioxide with calcium ions leached from a C—S—H gel in the recycled powders to produce calcium carbonate, and precipitating, crystallizing and cementing in the molding die together with calcium carbonate produced by decomposing calcium bicarbonate solution, and resulting in strength of the recycled powders.