#makecementsafeagain

1. Due to absorption of moisture by cement during storage, cement retards in hardening and reduces the strength. 2. It is okay for cement to absorb up to 1.2% moisture as this level of moisture is acceptable but if absorption exceeds 5%, the cement is destroyed for all practical purposes. 3. Different types of cements should not be mixed while using them for constructional purposes. 

Cement has a limited storage life when packed in bags. Always check when they expire.

Bags are vulnerable to water vapour and will absorb moisture if exposed to rain and water. 

Cement is designed to react chemically with water and any exposure to moisture will cause it to set and harden. 

If cement starts to harden in the bags it should be discarded. 

The following building tips will help to prolong the shelf life of cement:

Store on pallets off the floor, preferably on top of plastic sheets

Stack close together to minimise air circulation

Keep the cement store doors and windows closed

Stack away from walls

Cover stacks with plastic sheet

Handle bags carefully and, in order to reduce breakages and dust nuisance, do not walk on bags. In the event of problems with damp cement or excessive bag breakages, do not buy them.