Conference, Proceedings

profiles we have calculated the dependence of relative humidity and temperature on time. The
profile B‐B’ was set as a cross section from exterior to interior to show the temperature and
relative humidity fields across the envelope.
Envelope A
Relative humidity [-]
74
1
0.9
0.8
0.7
0.6
0.5
T 1
T 2
T 3
0.4
150 200 250 300 350 400 450 500
Time [days]
Figure 2. Relative humidity in profile A‐A’
Temperature [K]
310
300
290
280
273.15
270
T 1
260
150 200 250 300 350 400 450 500
Time [days]
Figure 3. Temperature in profile A‐A’
Figure 2 shows a dependence of relative humidity on time. During the winter period
(approximately days 330 to 420) the values of relative humidity within the envelope are
acceptable. In addition, the high volume of pores in the lime‐cement plaster allows the envelope
to breath, which leads to fluctuation of relative humidity inside the construction.
The time development of temperature in profile A‐A’ shown in Figure 3 indicates the danger of
water freezing/thawing in winter period where the temperatures are mostly under the freezing
point. Together with high level of relative humidity inside the construction this could lead to
destruction of AAC.
Relative humidity [-]
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
T 1
T 2
T 3
0.55
0 50 100 150 200 250 300 350 400
Distance [mm]
Figure 4. Relative humidity in profile B‐B’
Temperature [K]
295
290
285
280
275
270
T 1
T 2
T 3
265
0 50 100 150 200 250 300 350 400
Distance [mm]
Figure 5. Temperature in profile B‐B’