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Planning and Site Preparation
Always plan every step before any concrete is delivered. Proper planning avoids delays in unloading the concrete and if it needs to be placed with wheel barrows, make sure 2 or more are available.
Workers on site should always have protective clothing, work boots, and if required eye protection and hard hats.
AVOID Always avoid direct contact with concrete.
Temperature of 30°C and above and windy conditions concrete has to be cured by covering with plastic sheeting, spraying with a liquid membrane curing compound.
The practice of intermittent wetting down morning and night is not curing and can cause greater harm to the concrete by causing expansion and contraction, increasing the incidence of shrinkage cracking or craze cracking.
Hot weather increases the possibility of cracking. Temperature is not the only problem. Low humidity and high wind can cause moisture loss, resulting in shrinkage cracks.
PRECAUTIONS OF USE
HANDLING OF CONCRETE Prevent all contact with the skin.
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