SINGLE LAYER SCREEDS

The auto-levelling single layer screed is made with cellular concrete of medium density (with sand) over which the pavement may be bonded directly. The cellular sub-stratum can have a density of between 1000 and 1300 kg/m3. It units properties of lightness of the specific weight, thermal and acoustic insulation and significant productivity thanks to its being laid in a fluid state.

FORMULATIONS FOR SINGLE LAYER SCREED AT DIFFERENT DENSITIES

DENSITY	CONCRETE	SAND	WATER	ISOCEM S/B-N	INCREMENT P	INCREMENT L
1000 kg/m3	370 kg	560 kg	125 litres	0,7 kg	9,5 kg	2 kg
1200 kg/m3	400 kg	750 kg	140 litres	0,65 kg	9,5 kg	3 kg
1300 kg/m3	300 kg	750 kg	160 litres	0,7 kg	9,5 kg	4 kg

The data shown in the table is only indicative.

RESISTANCE AND INSULATION FOR SINGLE-LAYER SCREED AT DIFFERENT DENSITIES

DENSITY	MECHANICAL STRENGHT	THERMAL INSULATION Λ
1000 kg/m3	30 kg/cm2	0,24 Kcal/m2/ora/°C
1200 kg/m3	45 kg/cm2	0,38 Kcal/m2/ora/°C
1300 kg/m3	50 kg/cm2	0,40 Kcal/m2/ora/°C