High-strength concrete formula production process

Abstract

The invention discloses a high-strength concrete formula production process. The concrete is prepared from, by weight, 17-22 parts of cement, 21-31 parts of sand, 20-35 parts of stone raw materials, 15-25 parts of mineral admixtures, 4-10 parts of steel fibers and 13-17 parts of water. The beneficial effects of the high-strength concrete formula production process are that: by adopting the sand with low water content, the raw material ratio of the concrete during stirring can be more accurate; by using the clean dust-free cubic broken stone with the rough surface and the edges, the right-angled mixing effect of the stone raw material and other materials can be better; the mineral admixture can be slowly hydrated in the presence of water and lime; a cementitious substance of increased strength is generated to fill pores in the concrete, and the silicon powder and the zeolite powder are of amorphous and compact structures, so that the microstructure of a two-phase interface area is obviously improved, the strength, the impermeability and the durability of the concrete can be improved, and the silicon powder can enable the concrete to have very good workability and stability.

Description

Technical field [0001] The invention relates to the field of concrete, the maintenance, operation and maintenance and disaster prevention technology of tunnels and underground engineering in the scientific and technical fields of the project, and specifically is a high-strength concrete formula production process. Background technique [0002] The development direction of concrete, which is one of the main materials of reinforced concrete, is high strength, light weight, durability (anti-wear, anti-freeze-thaw, anti-seepage), disaster resistance (earthquake, wind, fire), explosion resistance, etc. According to the requirements of concrete strength, Generally, concrete with a strength grade of C60 and above is called high-strength concrete, and concrete with a strength grade of C100 or higher is called super high-strength concrete. [0003] In the patent document of Patent Application No. 201210003536.X, “a formulation of high-strength shotcrete is disclosed. The formulation of the ...

AI Technical Summary

Problems solved by technology

[0003] In the patent document of patent application number 201210003536.X, "a formula of high-strength shotcrete is disclosed. , polycarboxylate water reducer or naphthalene sulfonic acid formaldehyde condensation product water reducer; the strength of the shotcrete prepared by the technical scheme of the present invention can reach 30MPa~45MPa, and the shotcrete with C30 and C40 labels can be prepared, and by controlling sandstone Proportioning and adding sodium metaaluminate quick-setting agent, highly active metakaolin, polycarboxylate water reducer or naphthalene sulfonic acid formaldehyde condensation product water reducer to prepare shotcrete strength of only 30MPa ~ 45MPa C30 and C40 The strength grade of the sprayed concrete of the label does not meet the standard of high-strength concrete, resulting in low compressive strength, low deformation resistance, high density and high porosity of the concrete, and the rigidity of the component cannot be improved when used.