Quiz 9 "The two faces of one shower of komme concrete and precast concrete"

 Quiz 9 'The two faces of one shower of komme concrete and precast concrete'

Thank you for numerous applications in the ninth quiz as part of the Education and Industry series under the slogan TWO FACES, ONE FUTURE OF CELLULAR CONCRETE AND PREFABRICATION CONCRETE.

We present the correct answers below.

Do air-entraining admixtures protect concrete against frost corrosion?

YES, air-entraining admixtures protect concrete against frost corrosion. Aeration of the concrete mix is ​​aimed at introducing additional air pores of the appropriate shape, size and distribution into the concrete structure. Aeration is one of the main technological operations aimed at improving the resistance of concrete to the destructive effects of frost.

Can cellular concrete be used to build external walls that meet the current thermal insulation requirements (U ≤ 0.20 W / m2 · K) without additional insulation layers (e.g. polystyrene or mineral wool)?

YES. This is done by "low" density cellular concrete blocks of 300 or 350 kg / m 2, produced in large widths: 42 or 48 cm.

 

Congratulations to the winners.

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