€
BY NCin_bo New Frontiers of Construction Management Workshop 2018, vol. 09 n° 13
LCA and LCC Analysis for the
Programming of Sustainable
Interventions on Building Heritage
and moisture spots caused by condensation
95
a society that sees a continuous and uncontrollable growth in consumption sustainable consumption, in which environmental and social needs. This is
sector, that is responsible at European
to the comparison residential (which
maintenance strategies and constructive environmental resources.
The present study is aimed at reiterating methodologies as decision support tools
the economic and environmental impact
building component. The objective is to
without a thermal insulation system, was
To solve the problem described
hypothesised, thus returning, according
Figure 1: Old demaged sheath Figure 3: Original section
parameters relating to the materials
insulating layer to be inserted in the two
•
•
placing on the cementitious support,
Alternative A Ecoinvent system process Kg Bituminouswaterproo-Acrylic varnish Alternative B membrane Ecoinvent system process Kg
in_bo New Frontiers of Construction Management Workshop 2018, vol. 09 n° 13
time, reducing in this way the possibility layer, retains its characteristics and
insulating capacity and because it is able resistance to compression and humidity.
bituminous membrane. The decision not to use a single panel is dictated by maintenance and economic issues that will be dealt with later. Moreover, given
middle and the others in the corners, at a
This stratigraphy allows to protect changes, keeping it at temperatures
the sealing layer. To protect the insulating then a heavy protection in washed round gravel, which also allows access to the The thermophysical parameters relating
limit
necessary step to be able to construct
•
•
•
Maintenance, which includes the•
Decommissioning, which includesanalysis and consists in the quantitative entering and leaving the two systems. For this reason it was necessary to associate the materials and processes, to the data present in the databases
material the correspondence with the source and the quantity required.
The thermophysical parameters relating We obtain Unit thermal transmittance U
limit
Figure 4: Alternative A Figure 5: Alternative B
97
Alternative A RES U 76,6 Km Bituminous membraneAcrylic varnish Malvin
Alternative B
Bituminous
membrane RES U 76,6 Km
Transport, lorry 3,5- 15,5 Km Semac Roccarainola
RES U
To reduce the environmental impacts due to transport, the materials used
recovered, as well as processed, within put in place.
Furthermore, the energy consumption
demolition equipment and the
The investigations carried out to date,
to the stratigraphy in which it is inserted
durability, the best results were obtained with the systems where the mantle
with traditional stratigraphy and without protection, where the mantle is made
1995 include the results published by
cases, according to the report, there are no protection systems.
protected bituminous membranes, ie
radiations and to the consequent high must be protected with acrylic paints.
Bituminous
membrane Trasport, lorry
3,5-B.Recycling
bituminous membrane Eurometal
RES U
Trasport, lorry 3,5- strutture
B.Recycling
in_bo New Frontiers of Construction Management Workshop 2018, vol. 09 n° 13
environmental savings obtained with the
were planned during the maintenance
•
•
•
•
•
maintenance work were considered sent
•
•
•
For the decommissioning phase a manual and mechanical demolition was considered, with the consequent on the trucks.
The materials were sent to recycling
•
•
•
•
•
real environmental balance with the help
environmental impacts caused by the two intervention alternatives studied was assessed. This evaluation starts the inventory phase and allows, through
danger.
With the Eco-indicator 99 evaluation it was possible to quantitatively associate
environmental releases to certain impact
impact associated with the systems studied.
belongs to the materials used. Alternative A
the insulating panel determined the highest impact values, in particular with During the maintenance phase, the greatest damage was generated by the with the protective acrylic paint.
recyclable materials. Alternative B
was determined by the insulating
carcinogenic damage to humans and maintenance phase the greatest
99
19,9 Ecosystem quality Resources TOTAL 123,45 105,04 Ecosystem quality 7,67 6,61 Resources TOTAL 136,37 118,31 73,373 Ecosystem quality 35,751 Resources 139,57 TOTAL 318,05 222,123the impact categories have been membrane, since it is the only
non-Subsequently, the environmental
impacts that compete with the two design alternatives have been traced
•
•
Ecosystem Quality, measured in•
Resources, measured in MJsurplus.•
The results are shown as a singleAlternative A
the vapor barrier.
maintenance interventions responsible and the greater damage to human health to replace the pre-bitumed insulating acrylic paint.
During the decommissioning phase, the
Alternative B
particular, Resources was the most
the maintenance intervention with the
greatest environmental impact.
membrane has determined damage to the remaining materials were negligible.
a comparative assessment was made between the two design alternatives according to the environmental impacts
the production phase, the alternative A presented the largest environmental load in
design solutions and at the same time
minerals.
alternative A was the design solution
phase, where the gap between the two alternatives was more pronounced not
to resources but also in that relating to human health.
11,1 Ecosystem quality Resources TOTAL 24,04 17,91 Alternative A acrylic paint remake plaster Alternative B remake plaster
in_bo New Frontiers of Construction Management Workshop 2018, vol. 09 n° 13
Table 8: Phases costs
because alternative A needs more
two restoring works on the bituminous painting operations must be added with acrylic protective paint. two years. Even in the decommissioning phase the alternative B was the most sustainable solution, with a total environmental
that they presented the main problems were those related to human health and to recycle the bitumen-based material,
the two alternatives have been divided
•
•
Maintenance, which includes thecosts triggered by maintenance
•
Decommissioning, which includesphases.
each intervention, thus obtaining the
•
costs related to energy consumption•
the cost related to the consumption•
the cost related to the consumption
-•
-sary to proceed with the discounting
-rent maturities over time.
€ 5.636,75 Maintenance
Decommissioning
Ecosystem quality 56,53
Resources
Table 9: Phases costs
the alternative A, in blue the alternative Taking also into consideration the
maintenance phase and the discounted obtained the global costs.
interventions.
RESULTS
methodologies to the present study has made it possible to evaluate and compare the environmental and
analysis showed that alternative B represents the least impacting choice environmental damage related to the
The greater environmental criticality
intensive maintenance activity and by materials.
solution to the European purposes
this alternative constitutes the most economically advantageous solution
maintenance costs, between the two
•
•
in_bo New Frontiers of Construction Management Workshop 2018, vol. 09 n° 13
Figure 9: Global costs
higher weight.
economically advantageous solution approach that allows you to have an
allows to limit the maintenance costs in the construction phase.
Added to this is the need to make the she is aware that a certain design choice impact on the environment associated
included in the comparative evaluation conducted, with which it was possible to
Moreover, the decision to intervene on the building envelope with a thermal redevelopment intervention, involves the environment, since decreasing that is emitted into the atmosphere.
Termotecnica.
Codice dei contratti
. . , dicembre Recycle. Editore. , M. , M. R.
Ed. Franco Angeli.
La Chimica & La , (available (available (available (available
