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A kind of existing rubble wall reinforcement uhpc material and reinforcement method

A technology of reinforcing materials and rubble, which is applied in the field of strengthening UHPC materials for existing whole rubble walls and its reinforcement field, can solve the problems of insufficient mortar fullness, severe weathering, and low strength, and achieve increased fluidity and adaptability, Good plumpness and improved shock resistance

Active Publication Date: 2022-07-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stone wall is made of red clay mortar with low strength and serious weathering; figure 2 shown)

Method used

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  • A kind of existing rubble wall reinforcement uhpc material and reinforcement method
  • A kind of existing rubble wall reinforcement uhpc material and reinforcement method
  • A kind of existing rubble wall reinforcement uhpc material and reinforcement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This example provides a method for strengthening an existing rubble wall, including the following steps:

[0045] Step (1): Pretreatment of the existing rubble wall to be reinforced, including: determining the position of the main gasket, protecting the main gasket, and using a chisel) to take out a number of auxiliary stone gaskets (retain the auxiliary stone gaskets that are difficult to remove) ), take out part of the laterite mortar in the ash joint; clean the dust in the ash joint, and apply a layer of cement paste on the surface of the wall to be reinforced to enhance the interface bonding performance between the wall and the reinforced surface;

[0046] Step (2): The existing monolithic stone wall pretreated in step (1) is tightened and reinforced in a horizontal and vertical manner by using the steel bar binding method; the specific process is as follows: in a horizontal and vertical manner Tighten and reinforce. Use steel bars (the diameter of steel bars is 15...

Embodiment 2

[0053] This example provides a method for reinforcing an existing monolithic stone wall, the difference from Example 1 is only that the used UHPC material for strengthening the existing monolithic stone wall, calculated according to the unilateral dosage, includes: Portland cement 550kg / m 3 , white silica fume 200kg / m 3 , limestone powder 530kg / m 3 , quartz sand 735kg / m 3 , Iron ore tailings particles 75kg / m 3 , pumice particles 60kg / m 3 , Polycarboxylate water reducer 30kg / m 3 , water 255kg / m 3 and POM fiber 25kg / m 3 ; the rest of the steps and parameters are the same.

Embodiment 3

[0055] This example provides a method for reinforcing an existing monolithic stone wall, the difference from Example 1 is only that the used UHPC material for strengthening the existing monolithic stone wall, calculated according to the unilateral dosage, includes: Portland cement 600kg / m 3 , white silica fume 180kg / m 3 , limestone powder 510kg / m 3 , quartz sand 715kg / m 3 , Iron ore tailings particles 60kg / m 3 , Pumice particles 50kg / m 3 , Polycarboxylate water reducer 15kg / m 3 , water 230kg / m 3 and POM fiber 35kg / m 3 ; the rest of the steps and parameters are the same.

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Abstract

The invention discloses a UHPC material for reinforcing an existing rubble wall and a reinforcing method thereof, belonging to the technical field of wall reinforcement. The UHPC material for reinforcing an existing rubble wall comprises: Portland cement 550-600kg / m 3 , White silica fume 180~200kg / m 3 , limestone powder 510~530kg / m 3 , quartz sand 715~735kg / m 3 , Iron ore tailings particles 60 ~ 75kg / m 3 , Pumice particles 50~60kg / m 3 , Polycarboxylate water reducer 15~30kg / m 3 , Water 230~255kg / m 3 and POM fiber 25~35kg / m 3 The present invention adopts the improved new UHPC enlarged section method combined with the steel bar binding method to reinforce the existing rubble wall, which can increase the thickness of the rubble wall and improve its stability; significantly improve the seismic performance and durability , and the construction is convenient, and can be widely used in the seismic reinforcement of the whole rubble wall.

Description

technical field [0001] The invention relates to the technical field of wall reinforcement, in particular to an existing rubble wall reinforcement UHPC material and a reinforcement method thereof. Background technique [0002] The whole rubble wall has the advantages of good durability, easy access to materials and low price, and is widely used in the southern Fujian area along the coast of Fujian Province. The stone masonry structure dwelling in southern Fujian adopts the horizontal wall load-bearing system, and the wall is a whole rubble wall. The so-called whole rubble refers to a long stone that has been rough-processed manually with professional tools, with a section width and height of about 210mm. Part of the walls are thin, only single-leather stone masonry is used, and the wall thickness is about 210mm (such as figure 1 shown), does not meet the requirements of 240mm in the "Technical Regulations for Reinforcement of Stone Masonry Structures in Fujian Province". A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E04G23/02C04B14/06C04B14/16C04B14/28C04B14/30C04B18/12
CPCC04B28/04E04G23/0218C04B14/306C04B14/28C04B14/06C04B18/12C04B14/16C04B2201/50C04B2111/00155C04B2103/302C04B16/0675Y02W30/91E04G23/0211
Inventor 吴应雄朱远浩黄伟
Owner FUZHOU UNIV
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