Reinforced concrete pile with strong salt and alkali resistance

By introducing a combined structure of spiral stirrups, skeleton, and graphene-modified foam into concrete piles, and combining it with crystalline waterproofing coatings, the corrosion problem in saline-alkali environments was solved, and the strength and durability of the concrete piles were improved.

CN223991334UActive Publication Date: 2026-03-13SUQIAN HUAMEI NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-08
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing concrete piles are easily corroded by chloride ions in saline-alkaline environments, which leads to damage to the passivation film of the reinforcing bars and reduces their service life.

Method used

The structure employs spiral ribs and a skeleton, combined with graphene-modified foam and crystalline waterproofing coating to form a protective layer. The graphene-modified foam has built-in conductive wires as the anode, and the rust removal effect is achieved through current distribution. The outer side is covered with crystalline waterproofing agent for physical isolation.

Benefits of technology

It enhances the overall strength and shear resistance of concrete piles, extends their service life, reduces the risk of corrosion, and improves structural durability.

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Abstract

The utility model relates to the technical field of concrete piles, in particular to a reinforced concrete pile with strong salt and alkali resistance, which comprises a concrete pile base body and graphene modified foam, spiral stirrups are vertically and uniformly distributed in the concrete pile base body, and a framework is sleeved on the outer walls of the spiral stirrups. A plurality of groups of spiral stirrups are arranged on the framework, joint binding steel wires are arranged at the joints of the framework and the plurality of groups of spiral stirrups, transverse reinforcing stirrups and longitudinal reinforcing stirrups are arranged on the upper surface and the lower surface of the framework respectively, the transverse reinforcing stirrups and the longitudinal reinforcing stirrups are distributed vertically, and side grooves are formed in the periphery of the outer portion of the concrete pile base body. Graphene modified foam is clamped on the inner sides of the side grooves; the problems that after an existing concrete pile is prefabricated and formed in the prior art, chloride ions can penetrate through the concrete pile due to salt and alkali in the environment, so that the chloride ions make contact with internal steel bars, a passive film is damaged, electrochemical corrosion is caused, and the service life of a soil pile is shortened are solved.
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Description

Technical Field

[0001] This utility model relates to the field of concrete pile technology, specifically to an enhanced concrete pile with strong resistance to salt and alkali. Background Technology

[0002] Concrete piles are piles made of concrete, including ordinary reinforced concrete and prestressed concrete. They have advantages such as saving timber and steel, durability, and low cost, and are widely used in the foundation engineering of hydraulic structures, industrial buildings, civil buildings, and bridges. They are also often used for anti-sliding or water-proofing of slopes and foundation pits. Precast concrete piles, on the other hand, are pre-produced concrete piles that can be used directly in building construction, improving construction efficiency.

[0003] After existing concrete piles are prefabricated, the salinity and alkalinity of the environment can cause chloride ions to penetrate the concrete pile, come into contact with the internal steel bars, damage the passivation film, trigger electrochemical corrosion, and reduce the service life of the soil pile.

[0004] Therefore, in view of this, we studied and improved the existing structure and its shortcomings, and proposed a reinforced concrete pile with strong resistance to salt and alkali, in order to achieve a more practical value. Utility Model Content

[0005] The purpose of this invention is to provide a reinforced concrete pile with strong resistance to salt and alkali, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reinforced concrete pile with strong resistance to salt and alkali, comprising a concrete pile base and graphene modified foam. The concrete pile base has vertically and uniformly distributed spiral hoops inside, and the outer wall of the spiral hoops is fitted with a skeleton. Node-gathering steel wires are provided at the connection points between the skeleton and multiple sets of spiral hoops. Horizontal reinforcing hoops and longitudinal reinforcing hoops are respectively provided on the upper and lower surfaces of the skeleton, and the horizontal and longitudinal reinforcing hoops are distributed vertically. Side grooves are formed around the outer perimeter of the concrete pile base, and graphene modified foam is engaged on the inner side of the side grooves. A crystalline waterproofing agent coating is applied to the outer walls of the concrete pile base and the multiple sets of graphene modified foam, and the surface of the crystalline waterproofing agent coating has transverse patterned grooves.

[0007] Furthermore, the ends of the horizontal and vertical reinforcing stirrups protrude from the inside of the side groove.

[0008] Furthermore, the ends of the horizontal and vertical reinforcing stirrups are respectively engaged with the graphene-modified foam.

[0009] Furthermore, the graphene-modified foam and the side grooves are dimensionally matched.

[0010] Furthermore, the spiral stirrups and the skeleton are fixedly connected by node-bundled steel wires.

[0011] Furthermore, the horizontal reinforcing stirrups and the skeleton are fixedly connected by node-tightening steel wires, and the longitudinal reinforcing stirrups and the skeleton are fixedly connected by node-tightening steel wires.

[0012] This utility model provides a reinforced concrete pile with strong resistance to salt and alkali, which has the following beneficial effects:

[0013] 1. This utility model uses commonly used spiral stirrups and skeleton structure as the main keel, and forms a concrete pile structure by filling with concrete. In order to increase its strength, vertically distributed horizontal and longitudinal reinforcing stirrups are set on the adjacent sides of each skeleton. The horizontal and longitudinal reinforcing stirrups can increase the overall strength of the entire concrete pile, further increase shear resistance, and improve ductility, so that it can better absorb energy when subjected to earthquake or impact loads and reduce the risk of brittle failure.

[0014] 2. In this utility model, the outer structure of the entire concrete pile adopts a grooved structure on all four sides during molding, and the grooved positions are filled with graphene modified foam. The graphene modified foam protects the ends of the horizontal and vertical reinforcing stirrups, avoiding corrosion caused by the small horizontal diameter and short contact distance with the outside. The graphene modified foam can extend the service life of the horizontal stirrups. Graphene conductive wires can be embedded inside the graphene modified foam to act as anodes and connect with the stirrups, thereby achieving rust removal and other effects through current distribution.

[0015] 3. In this utility model, the outermost part of the entire structure is provided with a crystalline waterproofing agent coating containing lithium-based active ingredients to protect the inner concrete pile and provide physical isolation. The transverse grooves on the outer side can also reduce contact with rainwater or other substances, avoid concrete expansion and cracking, and significantly improve the durability of the structure. Attached Figure Description

[0016] The disclosure of this utility model will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. In the drawings:

[0017] Figure 1 This is a cross-sectional structural schematic diagram of a reinforced concrete pile with strong salt and alkali resistance according to the present invention.

[0018] Figure 2 This is a top view schematic diagram of a reinforced concrete pile with strong salt and alkali resistance according to the present invention.

[0019] Figure 3 This is a partial front view of the front structure of a reinforced concrete pile with strong resistance to salt and alkali according to the present invention.

[0020] In the diagram: 1. Concrete pile foundation; 2. Spiral stirrups; 3. Skeleton; 4. Jointed steel wires; 5. Horizontal reinforcing stirrups; 6. Graphene modified foam; 7. Side grooves; 8. Longitudinal reinforcing stirrups; 9. Crystalline waterproofing coating; 10. Horizontal patterned grooves. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution: a reinforced concrete pile with strong resistance to salt and alkali, comprising a concrete pile base 1 and graphene modified foam 6. The concrete pile base 1 has vertically uniformly distributed spiral stirrups 2 inside, and a skeleton 3 is fitted onto the outer wall of the spiral stirrups 2. Node-gathering steel wires 4 are provided at the connection points between the skeleton 3 and multiple sets of spiral stirrups 2. Horizontal reinforcing stirrups 5 and longitudinal reinforcing stirrups 8 are respectively provided on the upper and lower surfaces of the skeleton 3, and the horizontal and longitudinal reinforcing stirrups 5 and 8 are distributed vertically. Side grooves 7 are formed around the outer perimeter of the concrete pile base 1, and graphene modified foam 6 is engaged on the inner side of the side grooves 7. The outer walls of the body 1 and multiple sets of graphene-modified foam 6 are coated with crystalline waterproofing agent coating 9, and the surface of the crystalline waterproofing agent coating 9 is provided with transverse patterned grooves 10; the ends of the transverse reinforcing stirrups 5 and the longitudinal reinforcing stirrups 8 protrude from the inside of the side grooves 7; the ends of the transverse reinforcing stirrups 5 and the longitudinal reinforcing stirrups 8 are respectively engaged with the graphene-modified foam 6; the dimensions of the graphene-modified foam 6 and the side grooves 7 are mutually matched; the spiral stirrups 2 and the skeleton 3 are fixedly connected by the node-tied steel wires 4; the transverse reinforcing stirrups 5 and the skeleton 3 are fixedly connected by the node-tied steel wires 4, and the longitudinal reinforcing stirrups 8 and the skeleton 3 are fixedly connected by the node-tied steel wires 4.

[0023] This utility model provides a reinforced concrete pile with strong resistance to salt and alkali, which has the following beneficial effects:

[0024] The main structure is formed by using commonly used spiral stirrups 2 and skeleton 3. Concrete is filled in to form a concrete pile structure. To increase its strength, vertically distributed horizontal reinforcing stirrups 5 and longitudinal reinforcing stirrups 8 are set on the adjacent sides of each skeleton 3. The horizontal reinforcing stirrups 5 and longitudinal reinforcing stirrups 8 can increase the overall strength of the entire concrete pile, further increase shear resistance, and improve ductility, so that it can better absorb energy when subjected to earthquake or impact loads and reduce the risk of brittle failure.

[0025] The outer structure of the entire concrete pile adopts a grooved structure on all four sides during molding, and the grooves are filled with graphene modified foam 6. The graphene modified foam 6 is used to protect the ends of the horizontal reinforcing stirrups 5 and the longitudinal reinforcing stirrups 8, so as to avoid corrosion due to the small horizontal diameter and short contact distance with the outside. The graphene modified foam 6 can extend the service life of the horizontal stirrups. Graphene conductive wires can be built into the graphene modified foam 6 to act as anodes and connect with the stirrups, so that the current distribution can achieve the effect of rust removal.

[0026] The outermost part of the entire structure is coated with a crystalline waterproofing agent 9 containing lithium-based active ingredients to protect the inner concrete piles and provide physical isolation. The transverse grooves 10 on the outer side can also reduce contact with rainwater or other substances, prevent concrete expansion and cracking, and significantly improve the durability of the structure.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in this utility model without creative effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope defined in the claims.

Claims

1. A reinforced concrete pile with high resistance to salinity and alkalinity, comprising a concrete pile base body (1) and a graphene modified foam (6), characterized in that: The inside of the concrete pile body (1) is vertically and uniformly distributed with spiral stirrups (2), and the outer wall of the spiral stirrups (2) is sleeved with a framework (3), the connection between the framework (3) and the groups of spiral stirrups (2) is provided with a node convergence steel wire (4), the upper and lower surfaces of the framework (3) are respectively provided with a transverse reinforcing stirrup (5) and a longitudinal reinforcing stirrup (8), the transverse reinforcing stirrup (5) and the longitudinal reinforcing stirrup (8) are vertically distributed, the outside of the concrete pile body (1) is provided with a side slot (7) around, and the inside of the side slot (7) is clamped with a graphene modified foam (6), the outer wall of the concrete pile body (1) and the groups of graphene modified foams (6) is coated with a crystalline waterproof agent paint (9), and the surface of the crystalline waterproof agent paint (9) is provided with a transverse pattern groove (10).

2. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to saline-alkaline soil. The ports of the transverse reinforcing stirrups (5) and the longitudinal reinforcing stirrups (8) protrude into the inside of the side slot (7).

3. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to salt and alkaline. The ports of the transverse reinforcing stirrups (5) and the longitudinal reinforcing stirrups (8) are respectively clamped with the graphene modified foam (6).

4. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to salt and alkaline. The sizes of the graphene modified foam (6) and the side slot (7) are matched with each other.

5. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to saline-alkaline soil. The spiral stirrups (2) and the framework (3) are fixedly connected through the node convergence steel wire (4).

6. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to saline-alkaline soil. The transverse reinforcing stirrups (5) and the framework (3) are fixedly connected through the node convergence steel wire (4), and the longitudinal reinforcing stirrups (8) and the framework (3) are fixedly connected through the node convergence steel wire (4).

7. The enhanced concrete pile of claim 1, wherein the enhanced concrete pile is resistant to saline-alkaline soil. The graphene modified foam (6) is embedded with a graphene conductive wire.