Find the odd one out.

What is the amount used of plasticizers in cement by weight?

Damp proofing ________ resist water well enough.

At normal temperatures addition of sugar _________ per cent have little effect on the rate of hydration.

Content of SiO2 in silica fume is _______

Which one is not part of chemical and mineral admixtures?

In a dry environment, concrete strength will be loosed as much as _______ % in moist environment.

The specific surface (m2/kg) of silica fume.