Building Materials
The constituent of cement which is responsible for all the undesirable properties of cement is

Tetra calcium alumino ferrite
Tri-calcium aluminate
Di-calcium silicate
Tri-calcium silicate

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Building Materials
Acrylic sheets

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
Are generally unaffected by most household detergents
Possess the light transmission rate of 93%
All of these

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