Substance/Trade Name
Procedure:
Ready-mixed Concrete, Mortar and Screed
Use of concrete, mortar or screed in construction work
Substance Assigned a Work Place Exposure Limit (WEL)? YES/NO (delete as applicable)
The product (cement) must be kept on minimum .No WEL for contact with cement.
Workplace Exposure Limits (WEL’s) of 10mg/m3 total inhalable dust and 4mg/m3 respirable dust (8 hour TWA) are listed in EH40 for calcium silicate, pulverised fuel ash and limestone.
WEL’s of 0.05mg/m3 and 0.1mg/m3 are listed for Chromium (VI) compounds and respirable silica respectively (8 hour TWA).
Hazard Information
Route of exposure: Eye , Skin, Inhalation & Ingestion
Contact with skin or eyes may cause serious burns and ulceration, skin irritation and possibly dermatitis. The product tend to damage the nerve endings first before damaging the skin, therefore burns can develop without pain being felt at the time. When cutting/handling the fixed concrete or hard surface of concrete large amount of dust can be released. This may cause serious damage to the eye upon contact.
Respiratory damage might be caused by inhaling of silica particles in dust which is created by dry-mixed bagged products, cutting fixed concrete or surface treatment of hardened concrete containing high silica aggregates. Long-term prolonged exposure to high levels of respirable crystalline silica, which can arise from a failure to implement adequate control measures or wear the correct respiratory protection, can lead to silicosis and ultimately an increased risk of developing lung cancer.
Ingestion:
The swallowing of small amounts of any cement/water mixtures is unlikely to cause significant reaction. Large doses may result in irritation to the gastro intestinal tract.
Hazard Symbols
Personal Protective Equipment Requirements (see MSDS for specification required)
Hands: Waterproof gloves/ - PVC/nitrile gloves
Eye: Dust-proof goggles(HSE approved