Construction method of gunite concrete

Abstract

The invention discloses a construction method of gunite concrete, comprising the following steps: adopting normal pure cement paste consisting of water and cement or mixed cement paste consisting of water and cement mixed with fly ash, which is provided by a high-speed stirring slurrying device; respectively injecting dynamic gravel mixed material of a free falling body or respectively injecting dynamic sand and aggregate of the free falling body via a slurry transmission device; injecting cement paste and dynamic gravel mixed material or dynamic sand and aggregate to cause that the mixture enters a mixed conveyor entrance in an imperfect-mixing state; after stirred into even mixed material, directly sending the mixed material into a cabin via the gravity of the mixed material or sending the mixed material into a cabin via a mixed material sending device for vibrating and pouring into concrete. The invention combines concrete mixing, transporting and pouring technology into a whole, directly pours in site to continuously perform concrete construction, which simplifies concrete construction technology; the invention has few in-site construction devices, convenient operation, quick pouring, low cost and short construction period, effectively strengthens various mechanical indexes of concrete and obviously improves construction efficiency.

Description

technical field [0001] The invention relates to an integrated concrete construction method suitable for pouring construction of large-volume concrete projects, in particular to an integrated concrete mixing, transportation, and pouring process, with less on-site construction equipment, simple and fast operation, and low cost. Low cost, short construction period, high-quality engineering, and efficient shotcrete construction method. This method can also be used in medium and small volume concrete projects. Background technique [0002] At present, ordinary plain concrete is widely used in engineering. For very small scattered concrete projects, manual mixing is sometimes used, and the concrete is poured with a shovel or a trolley. This manual concrete construction method is not only inefficient, but also due to cement Uneven mixing will reduce the strength of concrete and affect the quality of concrete engineering. For small and medium-sized concrete projects, small-scale m...

AI Technical Summary

Problems solved by technology

With this process, since the water, cement, and sand and gravel mixtures are all in one integrated equipment to complete the pulping and mixing into concrete, only the mixing process of the concrete is changed, because the water, cement, and sand and gravel mixtures are all in one The equipment completes pulping and mixing into concrete. In the turbine mixer, water and cement are mixed into cement paste, which is discharged through the high-speed rotating mixing chamber to form cement slurry, and then mixed with sand and gravel at the far end of the turbine mixer to form Concrete requires a lot of equipment, cumbersome process, and complicated operation. Although the strength of concrete in traditional mixing operations is increased by 15% to 20%, under the same strength requirements, the amount of cement can be reduced and the cost of raw materials can be saved. However, this method requires large investment and power consumption. Many, high equipment maintenance costs, which not only increases the mixing time and reduces the efficiency of mixing concrete, but also needs to expand equipment, increase power, and add conveying equipment when mass producing concrete

Therefore, this method is inconvenient to be directly applied on the construction site of large concrete projects.

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