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Out of date cement
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Bruce[_4_]
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Posts: 1,118
Out of date cement
wrote:
either it sets like rock or it doesnt
On the contrary, in a slightly moist atmosphere, each cement particle
can hydrate (in other words, go off) without joining up to other
particles to form lumps. I have been involved in investigating
several projects where such degradation of cement caused major
problems, including complete collapse of a major structure.
The idea that cement is perfectly OK to use as long as there are no
lumps in it is an old wives' tale.
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Out of date cement