高温环境对石膏的影响

Building Science Pub Date : 1974-09-01 DOI:10.1016/0007-3628(74)90023-1

A.E. Mould , D.W. Williams

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引用次数: 5

摘要

石膏板广泛用于建筑结构的内部隔板，在实验室中，在正常建筑物的湿度条件下(≏13毫米汞柱水蒸气压力)，在60°C至125°C之间加热时，石膏板会迅速脱水。这种脱水可能会对某些建筑中石膏的使用产生重要影响，因为水的流失会导致开裂、粉化和耐火性能的丧失。

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The effects of high ambient temperatures on gypsum plasters

Gypsum plasterboard, widely used for internal partitions in building structures, has been shown to suffer rapid dehydration when heated between 60° to 125°C in the laboratory, under humidity conditions representative of those found in normal buildings ( $≏13$ mm Hg water vapour pressure).

This dehydration could have important consequences for the use of gypsum in some building situations, since loss of water leads to cracking, powdering and loss of fire resistance.

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Building Science

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