Deterioration. Deterioration is a change of original state of any material by interaction between the object and factors of destruction . Causes of Deterioration of Traditional Manuscripts.
What are the causes of records and archives deterioration?
Other factors in the degradation of archival materials are fluctuations in or excessive levels of temperature and relative humidity; excessive exposure to light ; air pollution; water damage; destruction from biological agents such as mould or insects; or abuse and mishandling.
What are the types of deterioration?
- 2.1 Physical Forces.
- 2.2 Thieves, Vandals, Displacers.
- 2.3 Fire.
- 2.4 Water.
- 2.5 Pests.
- 2.6 Pollutants.
- 2.7 Light.
- 2.8 Incorrect Temperature.
What is the cause of deterioration?
Physically – induced deterioration is caused by freeze–thaw loads, non-uniform volume changes, temperature gradients, abrasion, erosion, or cavitation . Chemically-induced deterioration consists of carbonation, corrosion of steel reinforcement, sulfate and acid attacks, or alkali–aggregate reactions.
What are the causes of deterioration of library materials?
Causes of deterioration may be external or internal . External causes [2] are physical, chemical, biological, improper storage , unauthorized exposure, risky handling, theft, natural calamities. Internal causes are : poor quality of paper or materials used , the chemicals used for printing and binding.
What are the enemies of records?
The enemies of books and paper records, in addition to the fire and water damage usually associated with disasters, are heat and humidity, light and ultra-violet energy, insects, rodents, fungi, oxygen, acid and the people who use (and abuse) those records .
How do you prevent document deterioration?
Proper temperature and humidity while in storage and in use is the simplest way to slow acidification. The more a document is damaged by acids, the fewer options there are for recovery. Early action is the best way to prevent acidic deterioration.
What are the agents of deterioration?
- Physical Force. Physical Force can damage artifacts directly by causing rotation, deformation, stress, breakage and pressure. ...
- Theft and Vandalism. ...
- Neglect. ...
- Fire. ...
- Water. ...
- Pests. ...
- Pollutants. ...
- Light.
What is material deterioration?
What Does Deterioration Mean? Deterioration, in the context of corrosion, is a loss in the properties of a material by chemical interaction with the environment . Harmful effects of deterioration by corrosion can include: Reduction in metal thickness leading to mechanical/structural failure or breakdown.
What does it mean when a person is deteriorating?
: to become impaired in quality, functioning, or condition : degenerate allowed a tradition of academic excellence to deteriorate his health deteriorated .
What are the signs of a deteriorating patient?
Other clues that your patient may be deteriorating include changes in pulse quality (irregular, bounding, weak, or absent), slow or delayed capillary refill, abnormal swelling or edema, dizziness, syncope, nausea, chest pain , and diaphoresis. Monitoring your patient’s temperature is also important.
What are the major causes of food deterioration?
- growth and activities of micro-organisms, principally bacteria, yeasts and moulds;
- activities of natural food enzymes;
- insects, parasites and rodents;
- temperature, both heat and cold;
- moisture and dryness;
- air and in particular oxygen;
- light;
- time.
What causes deterioration in the heritage sites?
- Poor Original Design and/or Original Materials. Existing buildings represent a cross section of building technology and materials. ...
- Corrosion & Incompatibility of Secondary Materials. ...
- Movement or Settlement. ...
- Moisture Infiltration (Maintenance) ...
- Final Thought.
What is library deterioration?
1. Introduction. Deterioration of library materials caused by natural elements, such as temperature and humidity extremes, light, air-born pollutants, mold and pests, is usually gradual and cumulative , and is always irreversible.
Does paper deteriorate?
Paper and related materials deteriorate rapidly with temperature and relative humidity changes . Rapid and serious deterioration of paper is caused by the oxidation of cellulose brought about by the ultraviolet rays in sunlight and fluorescent light.
How do books deteriorate?
Dust in itself can cause books to deteriorate. ... Then use a dry shaving brush, a feather duster, or soft, clean paintbrush to dust a book, moving the brush from the spine out. Dust all sides of a book. You can also vacuum books.
