High-strength commercial concrete and preparation method thereof

Abstract

The invention relates to the technical field of building materials, and particularly discloses high-strength commercial concrete and a preparation method thereof. The high-strength commercial concretecomprises the following components: cement, fly ash, slag powder, an expanding agent, fine aggregate, coarse aggregate, water and an additive, The pretreatment of the fly ash comprises the followingsteps: (1) mixing the fly ash with an acid solution, and performing washing and roasting to prepare porous fly ash; (2) atomizing an impermeable wear-resistant aid, depositing the atomized impermeablewear-resistant aid on the porous fly ash, and performing mixing and grinding to obtain fly ash particles, wherein the mass ratio of the porous fly ash to the impermeable wear-resistant aid is 1:(0.1-0.3); and (3) atomizing an excitant, depositing the atomized excitant on the fly ash particles, and placing the particles at 800-960 DEG C for 2-3h, wherein the mass ratio of the fly ash particles tothe excitant is 1:(0.3-0.5). The high-strength commercial concrete has the advantages of being high in impermeability, abrasion resistance and corrosion resistance and good in seepage scouring resistance and durability.

Description

technical field [0001] The application relates to the technical field of building materials, more specifically, it relates to a high-strength commercial concrete and a preparation method thereof. Background technique [0002] Concrete material is an indispensable material in construction engineering. Commercial concrete, also known as ready-mixed concrete, or commercial concrete for short, is the main product of concrete materials at present. Most modern building construction uses commercial concrete. The strength value of commercial concrete is an important At present, the application of high-strength concrete is more and more widely, which is one of the main directions of concrete development in the future. [0003] The coastal areas of coastal cities have always been the prime location of the city. There are more and more high-rise and super high-rise buildings built along the coastline in the coastal areas. The coastal areas have both coastal foundations with good geolog...

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Problems solved by technology

[0003] The coastal areas of coastal cities have always been the prime location of the city. There are more and more high-rise and super high-rise buildings built along the coastline in the coastal areas. The coastal areas have both coastal foundations with good geological conditions and miscellaneous filling soil and other weak foundations, most of which are in contact with the strongly weathered bedrock surface are gravel, breccia, or medium and coarse sand and other water-rich and highly permeable soil layers, which forms the geological inhomogeneity of coastal or near-sea areas In coastal areas, due to the influence of seawater, the geological inhomogeneity and complexity are more obvious. The damage to the underground concrete structures near the sea is extremely concealed, and it is difficult to be found and repaired after being buried deep underground for a long time. Therefore, The potential safety hazards caused are extremely harmful. At present, the research on concrete applied in coastal areas tends to study durability such as corrosion resistance. However, in coastal areas, because the underground concrete structure is relatively deep from the surface, it is affected by tidal action every day. The underground concrete structure will be eroded for a long time, and due to the excessive exploitation of groundwater in the city, the phenomenon of seawater intrusion is becoming more and more serious. erosion, but also by the seepage and erosion of seawater, resulting in poor durability of the underground concrete structure

[0004] In view of the above-mentioned related technologies, the inventor believes that concrete is vulnerable to the seepage and erosion of seawater in coastal areas, resulting in poor durability of concrete and short service life of buildings

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