GB/T 30688-2014Stone and brick collection's disease and illustration (English PDF)

3.1 Heritage Collection masonry stoneandbrickcolection

Units of cultural relics in the collection of cultural texture of the brick historical, artistic and scientific value.

3.2 Masonry heritage Disease

Due to changes in natural phenomena brick relics of substances cause damage and vandalism, structure, appearance occurred.

3.3 Natural damage

Masonry surfaces artifacts due to the phenomenon of disease caused by natural factors, according to the mechanism of injury can be divided into physical, chemical, biological damage and loss Three types of injury. Common manifestations hollowing, flaking, surface erosion, crisp base and salt pan, lower plants (mosses, lichens) and damage Surface contamination.

3.4 Mechanical damage

The external force (such as impact, dump, fall, earthquake, etc.) influence the occurrence of damage masonry heritage phenomenon. Common form Are. cracking, mechanical fracture, partial deletion, etc.

Disease type 4

4.1 Crack (crack)

Including crack fracture, mechanical cracks, fissures existing fractures and weathered four major categories, including fracture, mechanical fracture caused more damage to machinery, tools Body as follows.

a) Fracture --- masonry overall relics throughout the property and there is significant displacement of the cracking phenomenon. See Figure A.1;

b) Due to mechanical fracture --- heritage masonry cracking phenomenon caused by an external force, such cracks are generally most deeply into the stone or brick