What is deleterious material?

What is deleterious material?

Deleterious materials (also known as prohibited materials) are materials that are prohibited for use in a project. structural stability/performance/physical integrity/life-expectancy of a project. non-compliance with regulations. susceptibility to change/deterioration.

Which material is most deleterious?

Asbestos
Asbestos – Asbestos is the most written about deleterious material; Please see our other blogs for information on asbestos hazards and management.

Which of the following is example of deleterious material?

Working with LCMs creates a ‘significant’ exposure risk, from inhalation and ingestion, as defined by lead regulations. High alumina cement: Used as an accelerator for quick setting of concrete. Urea formaldehyde: Used in furniture and foam products or contained in adhesives.

What is deleterious effect?

If something is deleterious, it does harm or makes things worse. Smoking has obvious deleterious effects on your health, not to mention your social life. My parents were worried that their divorce would have a deleterious effect on us kids, but in the end it was less harmful than watching them fight all the time.

What is Woodwool shuttering?

Woodwool is a man-made board material about 50 to 75mm thick comprising shredded timber bound together in a cement paste. Woodwool boards were used both as a permanent shuttering to flat slabs but also as a void former between concrete ribs.

Is wood wool deleterious?

Woodwool slabs remain on the list of deleterious materials on the basis that poor compaction of the concrete at the time of construction may result in loss of grout and consequent honeycombing of the concrete around the reinforcement at the soffit of a slab or rib.

What is a deleterious variant?

A genetic alteration that increases an individual’s susceptibility or predisposition to a certain disease or disorder. When such a variant (or mutation) is inherited, development of symptoms is more likely, but not certain.