3results about How to "Enhanced skeleton structure" patented technology

This invention provides a road base material based on sludge and construction waste, its preparation method, and its application. The road base material includes a base component and an admixture component. The base component includes: 45-55% recycled coarse aggregate, 20-35% recycled fine aggregate, 15-25% sludge, 4-6% cement, and 1-4% water. Both the recycled coarse and fine aggregates are derived from construction waste. The admixture component includes quicklime, sodium hydroxide, and zinc ricinoleate. The mass percentage of quicklime to sludge is 4-8%, the mass percentage of sodium hydroxide to sludge is 0.1-0.2%, and the mass percentage of zinc ricinoleate to sludge is 0.2-0.5%. This invention promotes the high-value utilization of urban solid waste such as sludge and construction waste, and yields a higher-performance road base material based on sludge and construction waste.

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a filter-press mud cake as a flow-state filling material. The method comprises the following steps: adding basalt fibers into gamma-aminopropyltriethoxysilane to obtain basalt fibers subjected to surface treatment, and stirring and mixing the basalt fibers subjected to surface treatment with a modified siliceous material to obtain a fiber reinforced material; stirring 70-80 parts of the filter pressing mud cake, 3-6 parts of a curing agent and 3-5 parts of a fiber reinforced material, then adding 2-4 parts of an early strength agent, 8-12 parts of recycled fine aggregate and 0.1-0.2 part of an air entraining agent, and stirring to obtain the flow state filling material. The material obtained in the invention has good mechanical properties, durability and contractibility.

This invention belongs to the field of electrocatalyst technology, and specifically relates to a graphene-based sheet-like porous catalyst, its preparation method, and its application. The preparation method includes: separately preparing an aqueous dispersion of graphene oxide and an aqueous dispersion of nano-melamine-formaldehyde resin, mixing them, and stirring to obtain a mixed dispersion; mixing the mixed dispersion with a hydroxyl-containing compound, adjusting the pH to weakly alkaline, stirring, concentrating, and drying to obtain a dried product; and subjecting the dried product to high-temperature pyrolysis. This method can prepare a sheet-like nitrogen-doped carbon-based non-noble metal electrocatalyst with stable mechanical properties, abundant pore structure, and high nitrogen content. It exhibits excellent electrochemical catalytic performance, has a simple preparation method, mild reaction conditions, and can achieve uniform nitrogen doping.