Concrete for improving strength of PC component and preparation method thereof

Abstract

The invention discloses concrete for improving the strength of a PC component and a preparation method of the concrete, and relates to the technical field of concrete preparation. The concrete for improving the strength of the PC component comprises the following components in parts by mass: 300-620 parts of cement; 500-830 parts of sand with the silt content being less than 2% ; 150-300 parts of broken stone with a particle size of 5-20 mm; 70-100 parts of mineral powder with the ignition loss of 1.55%; 70-120 parts of fly ash with the ignition loss of 4.72%; 40-85 parts of an active agent; and 50-90 parts of a water reducing agent and 200-450 parts of water. The preparation method comprises the following steps: pouring the prepared cement, sand, gravel and water into a stirrer according to the mass parts, and fully stirring and mixing to obtain a primary mixture; according to the concrete for improving the strength of the PC component and the preparation method of the concrete, the secondary mixing mechanism is involved in the concrete mixing process and can synchronously operate with the primary mixing mechanism, and a solid or liquid water reducing agent is effectively pushed into the concrete in the overturning process, so that the combination effect of the water reducing agent and the concrete is fully improved, and the purpose of reducing water is achieved.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to concrete for improving the strength of PC components and a preparation method thereof. Background technique [0002] PC components include prefabricated reinforced concrete column foundation, prefabricated steel structure steel column foundation, street lamp billboard column reinforced concrete foundation, and prefabricated floor slab. Prefabricated concrete is widely used in construction, transportation, water conservancy and other fields, and plays an important role in the national economy. [0003] Cement will produce a flocculation-like structure after adding water and stirring. In these flocculation-like structures, a lot of mixing water is wrapped, thereby reducing the workability of the freshly mixed concrete. In order to maintain the workability required by the concrete mixture during construction, it is necessary to It is necessary to increase the quantity ...

AI Technical Summary

Problems solved by technology

[0003] Cement will produce a flocculation-like structure after adding water and stirring. In these flocculation-like structures, a lot of mixing water is wrapped, thereby reducing the workability of the freshly mixed concrete. In order to maintain the workability required by the concrete mixture during construction, it is necessary to It is necessary to increase the quantity correspondingly when mixing, and this will promote the formation of too many pores in the cement stone structure, resulting in a decrease in the strength of the PC component, which needs to be destroyed and remade

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