Civil Engineering Reference
In-Depth Information
Building
Insulation
Fibrous
Insulation
Granular
Insulations
Cellular
Insulation
Reflective
Insulations
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Inorganic
Organic
Advanced
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Natural
Synthetic
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Vegetable
Fibres
Animal
Fibres
Fig. 3
Classification of fibrous materials
are categorized into four classes (Turner and Malloy
1981
): (1) cellular (2) fibrous
(3) granular and (4) reflective insulations.
Cellular insulations are composed of small individual cells which are either
interconnected or sealed from each other for forming a cellular structure. Exam-
ples of insulation materials are polystyrene and polyisocyanurate. Granular insu-
lations are composed of small nodules that contain voids or hollow spaces. The
materials are sometimes considered as open-cell materials as gases can be trans-
ferred between the individual spaces. Examples of insulation materials are
expanded polystyrene. Reflective insulations consist of layers of reflective foil
materials on surfaces as reflective surfaces to reduce the radiate heat to or from the
surfaces. Examples of insulation materials are various radiant barriers. Fibrous
insulations are composed of small diameter fibres that finely divide the air space.
