Novel seawater and sea sand concrete retaining wall structure and construction method

Abstract

The invention relates to a novel seawater and sea sand concrete retaining wall structure and a construction method. The retaining wall structure comprises longitudinal fiber bars arranged on the two sides, fiber grids laid on the outer sides of the fiber bars, the fiber bars on the two sides are connected through the fiber bars and filled with seawater and sea sand concrete, and the outer side of the concrete is coated with a capillary crystalline coating. The construction method comprises the following steps: firstly, arranging longitudinal fiber bars on two sides, paving fiber grids on the longitudinal fiber bars, connecting the fiber grids by adopting the fiber bars, forming a reinforcing system by a concrete admixture and salt-containing components in seawater, preparing seawater and sea sand concrete, pouring and filling the concrete, and curing for 28 days. And spraying the prepared capillary crystalline material on the surface of the concrete for 2-4 times. Fiber materials replace steel bars to prevent seawater and sea sand corrosion; the longitudinal fiber bars are fixed by the fiber grids, so that the crack resistance, bending resistance and shearing resistance of the wall body are improved; salt-containing components in seawater and sea sand stimulate and improve the performance of the admixture and improve the strength of the concrete, and the seawater and sea sand concrete uses local materials and saves fresh water resources; the surface coating enhances the surface concrete, prevents the concrete surface from being corroded and peeled off, and improves the use durability of the concrete.

Description

technical field [0001] The invention relates to a novel seawater sea-sand concrete retaining wall structure, and also relates to a construction method of the retaining wall structure. Background technique [0002] The east of my country faces the sea, and the total length of the coastline is more than 32,000 kilometers. Among them, the mainland coastline is more than 18,000 kilometers long, starting from the mouth of the Yalu River in the north and ending at the mouth of the Beilun River in the south. Among them, the concrete protection equipment near the sea has been blown by the sea breeze and soaked by the waves for many years, and is in a high-humidity and high-salt environment, and has been eroded by the sea breeze and sea water. [0003] Ordinary reinforced concrete is used, in the marine environment, it is corroded by chloride ions and sulfates, the steel bars are corroded, and the concrete is eroded, resulting in concrete spalling, which greatly reduces the bearing c...

AI Technical Summary

Problems solved by technology

[0003] Ordinary reinforced concrete is used, in the marine environment, it is corroded by chloride ions and sulfates, the steel bars are corroded, and the concrete is eroded, resulting in concrete spalling, which greatly reduces the bearing capacity of the concrete structure and seriously affects the durability of the retaining wall structure.

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