Fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement repairing of masonry ancient buildings and preparation method of mortar

A technology of sulfur-fixing ash and hydraulic lime, which is applied in the field of building materials, can solve the problems that the strength and durability of air-hard lime cannot meet the protection requirements, the antique mortar process is complicated, and the physical and chemical properties are not compatible, etc., and achieve significant economic benefits , high cohesion, and moderate strength development

Inactive Publication Date: 2019-09-17
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the incompatibility between the physical and chemical properties of cement and ancient building substrates, the strength and durability of air-hardening lime cannot meet the protection requirements, the antique mortar process is complicated, the curing speed is slow, and the quality is not easy to control. Hydraulic lime has become a hot spot in the research of modern protective materials.

Method used

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  • Fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement repairing of masonry ancient buildings and preparation method of mortar
  • Fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement repairing of masonry ancient buildings and preparation method of mortar
  • Fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement repairing of masonry ancient buildings and preparation method of mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0035] In Examples 1-5, the sulfur-fixing ash and hydraulic lime mortar for the reinforcement and repair of masonry ancient buildings, in parts by weight, its raw materials include the following components: 10-25 parts of slaked lime, sulfur-fixing ash 5-15 parts, 45-68 parts of aggregate, 0.5-2 parts of additives.

[0036] In this embodiment, the additives include, in parts by weight: 0.4-1.2 parts of vinyl redispersible latex powder, 0.03-0.15 parts of hydroxyethyl methylcellulose with a viscosity of 10000-45000 mPa·s, organosilicone 0.08-0.4 parts of water agent, 0.05-0.2 parts of wood fiber with a diameter of 0.5-3mm.

[0037] See Table 1 for the proportioning of each raw material in Examples 1-5.

[0038] The method for preparing the sulfur-fixed ash and hydraulic lime mortar for the reinforcement and restoration of the above-mentioned masonry ancient buildings comprises the following steps:

[0039] (1) Add vinyl redispersible latex powder, hydroxyethyl methylcellulose...

Embodiment 1

[0051] Example 1 The effect of sulfur-fixing ash slag reconciling hydraulic lime mortar and comparative example 2 Portland cement mortar repairing the wall surface of ancient buildings is as follows Figure 1~2 shown.

[0052]The results show that the appearance of the sulfur-fixed ash blended hydraulic lime mortar proposed by the invention is consistent with that of traditional calcareous cementitious materials, and meets the requirement of "repairing the old as old" as an ancient building restoration material. The sulfur-fixed ash blended hydraulic lime mortar also has similar or even higher compressive strength, flexural strength and air permeability than natural hydraulic lime mortar, and can achieve lower shrinkage, soluble salt content and elastic modulus ; What's more, its cost is much lower than that of natural hydraulic lime mortar. Compared with Portland cement mortar, the early strength of sulfur-fixed ash and hydraulic lime mortar is lower, but the strength at 180...

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Abstract

The invention discloses fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement and repairing of masonry ancient buildings and a preparation method of the mortar, and belongs to the technical field of building materials. The mortar comprises the following raw materials, in parts by weight: 10-25 parts of slaked lime, 5-15 parts of fluidized bed combustion ashes, 45-68 parts of aggregate, and 0.5-2 parts of an additive. The fluidized bed combustion ash mixed hydraulic lime mortar for reinforcement repairing of the masonry ancient buildings provided by the invention has moderate strength development, small shrinkage, and excellent compatibility and matching with the masonry ancient buildings, can be applied to reinforcement repairing projects of various masonry ancient buildings, and utilizes a large amount of industrial solid waste, thereby having lower economic cost and good environmentally-friendly energy-saving waste-utilization effects.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a blended hydraulic lime mortar prepared by using sulfur-fixed ash slag and applied to the reinforcement and repair of masonry ancient buildings and a preparation method thereof. Background technique [0002] A large number of masonry and geotechnical ancient architectural sites in China urgently need to be repaired, which leads to an urgent need for repairing cementitious materials. In view of the incompatibility between the physical and chemical properties of cement and ancient building substrates, the strength and durability of air-hardening lime that cannot meet the protection requirements, the antique mortar process is complicated, the curing speed is slow, and the quality is not easy to control. Hydraulic lime has become a hot spot in the research of modern protective materials. Contents of the invention [0003] The purpose of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B111/72
CPCC04B28/12C04B2111/72C04B2201/50C04B18/103C04B18/16C04B2103/0057C04B24/383C04B24/42C04B16/02
Inventor 朱绘美李辉刘文欢郑伍魁吴锋
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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