Performance Over Time and Durability Assessment …
281
As above stated, the stratigraphy for this sample is common to both portions
until the second coating of the insulating layer. This “pre-coating” stratigraphy is as
follows:
– plasterboard support with 15 mm thickness;
– 8-cm EPS panels, glued onto the substrate by means of plasterboard with specific
fibrate cement-based glue for application of the adhesive (or smoothing) for coating
systems;
– first EPS panel coating layer always with fibrate glue;
– 160 g/m
2 alkali-resistant fibreglass mesh;
– second coating layer always with fibrate adhesive, similar to the one used as an
adhesive and for the first coating layer.
The two portions of the sample, differentiated by the type of coating from this
point onwards, have the following additional layers:
for the PART COVERED WITH ARTIFICIAL STONE (for brevity called “ART”)
– first coating with cement-based glue and natural hydraulic lime;
– glass fibre mesh with anti-alkaline primer weighing 315 g/m
2 ;
– second coating always with cement-based glue and natural hydraulic lime;
– cast stone, jointed (for the drying of any potential glue) with a two-component
lightened mortar.
for the PART COVERED WITH NATURAL STONE (for brevity called “NAT”)
– one-component Portland cement-based adhesive and synthetic resins with high
elasticity;
– natural stone, jointed (for drying any potential glue) with traditional mortar.
4 Preparation of the Experimental Set-Up
The previously described cycle specifications were translated into operating plans for
programming of the climate chamber in compliance with the necessary precedence.
In the testing phase of the set cycles in the operational plans, the actual duration
of the same cycle was measured, including transients, lasted about 135 h.
After having programmed the climatic chamber, tested the individual phases of
the cycle and measured the necessary transitional times, it was possible to prepare
a realistic experimental plan that also takes into account the appropriate manual
operations involved between one ageing cycle and another.
To allow placing the test sample in front of the climatic chamber, an ad hoc
structure made and fixed above the carriage of the door of the climatic chamber was
realised and installed. This steel structure allows the placement of a sample with a
maximum size of 106 × 106 cm.
281
As above stated, the stratigraphy for this sample is common to both portions
until the second coating of the insulating layer. This “pre-coating” stratigraphy is as
follows:
– plasterboard support with 15 mm thickness;
– 8-cm EPS panels, glued onto the substrate by means of plasterboard with specific
fibrate cement-based glue for application of the adhesive (or smoothing) for coating
systems;
– first EPS panel coating layer always with fibrate glue;
– 160 g/m
2 alkali-resistant fibreglass mesh;
– second coating layer always with fibrate adhesive, similar to the one used as an
adhesive and for the first coating layer.
The two portions of the sample, differentiated by the type of coating from this
point onwards, have the following additional layers:
for the PART COVERED WITH ARTIFICIAL STONE (for brevity called “ART”)
– first coating with cement-based glue and natural hydraulic lime;
– glass fibre mesh with anti-alkaline primer weighing 315 g/m
2 ;
– second coating always with cement-based glue and natural hydraulic lime;
– cast stone, jointed (for the drying of any potential glue) with a two-component
lightened mortar.
for the PART COVERED WITH NATURAL STONE (for brevity called “NAT”)
– one-component Portland cement-based adhesive and synthetic resins with high
elasticity;
– natural stone, jointed (for drying any potential glue) with traditional mortar.
4 Preparation of the Experimental Set-Up
The previously described cycle specifications were translated into operating plans for
programming of the climate chamber in compliance with the necessary precedence.
In the testing phase of the set cycles in the operational plans, the actual duration
of the same cycle was measured, including transients, lasted about 135 h.
After having programmed the climatic chamber, tested the individual phases of
the cycle and measured the necessary transitional times, it was possible to prepare
a realistic experimental plan that also takes into account the appropriate manual
operations involved between one ageing cycle and another.
To allow placing the test sample in front of the climatic chamber, an ad hoc
structure made and fixed above the carriage of the door of the climatic chamber was
realised and installed. This steel structure allows the placement of a sample with a
maximum size of 106 × 106 cm.