Novel historical building gypsum product repair method

Abstract

The invention discloses a novel historical building gypsum product repair method. The novel historical building gypsum product repair method includes the steps of 1), for digital file reservation, measuring the shape and size of each part and adopting a three-dimensional laser scanning technique to perform model reconstruction of a product; 2), for material analysis, performing mechanism analysis and material analysis on the gypsum product; 3), for drawing formation, adopting a three-dimensional reconstruction technique to perform restoration on the ornamental gypsum product and reconstructing a restoration model in combination with measurement data and the product model, printing out the ornamental gypsum model product three-dimensionally or performing model processing reproduction according to the restoration model; 4), for product repair, adopting composite repair gypsum emulsion to have the historical building gypsum product repaired. With the method, the unique gypsum emulsion can be well combined with original gypsum material, good repair effect is achieved, and style modality, material technology and texture of the original gypsum product are ensured to be close to original historical information.

Description

technical field [0001] The invention belongs to the technical field of building decoration and restoration, and in particular relates to a new restoration method for plaster products of historic buildings. Background technique [0002] Gypsum is a monoclinic mineral, a hydrate whose main chemical composition is calcium sulfate (CaSO4). Gypsum is a versatile industrial and construction material. It can be used in cement retarder, gypsum building products, model making, medical food additive, sulfuric acid production, paper filler, paint filler, etc. The microporous structure and heating dehydration of gypsum and its products make it have excellent sound insulation, heat insulation and fireproof performance. [0003] The building gypsum generally used in the traditional construction industry is an air-hardening cementitious material mainly composed of β-hemihydrate gypsum, which is made of dihydrate gypsum heated and dehydrated at a certain temperature, and ground. Differen...

AI Technical Summary

Problems solved by technology

Among the modern historical buildings, there are some European-style historical buildings. After a hundred years, the internal structure of these buildings has been damaged, especially the internal plaster products have been blackened, mildewed, peeled off, damaged, or the structure is poor. Potential safety hazards, etc., so it is urgent to repair, and the existing construction technology, such as the patent CN101424129A, discloses a repair method for historical architectural gypsum flower decoration products, but this repair method has large errors and cannot achieve the effect of repairing its historical original appearance , and the operation is convenient, and the construction volume is large, which increases the repair cost