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Report A3132.1 <br /> Page 10 <br /> The temperature deflections in the winter at the soil/insulation interface are <br /> downward because the melt water temperature is initially 0°C, which would cool <br /> the soil and insulation at the interface. <br /> Effect of Grading <br /> Figure 10 shows temperature measurements on the east wall of the test but for <br /> the same insulation product that was shown on the west side in Figure 9. In the <br /> first year, these periodic temperature deflections were often smaller or absent on <br /> the east wall where the ground surface was properly graded outw <br /> relative absence of temperature deflections can be observed in Fiard. This <br /> gure 10 for the <br /> first winter. <br /> In the second year however, the differences between east and west were less <br /> noticeable, and the temperature deflections were then quite noticeable. A final <br /> review of soil slopes near the wall revealed that by the end of the second year, <br /> most of the slopes had settled on the east wall. These slopes were now mostly <br /> inward, as recorded in-Appendix A, Figures A3 and A4. <br /> Effect of Polyethylene at the Soil Interface <br /> Figure 11 shows the temperature profile at the polyethylene/soil interface for the <br /> specimen at position W5 on the west wall. The temperature depressions during _ <br /> rain and thaw intervals are relatively large compared to those shown in Figures <br /> and 10. ures 9 <br /> g <br /> Temperature Profiles at all Verticaf Locations <br /> Temperature profiles similar to the ones presented in Figure 9 are presented in <br /> Appendix D for all vertical locations. In these graphs, it can be noted that the <br /> vertical deflections in the temperature profile at the insulation/soil interface occur <br /> at the same time. This strongly suggests the downward movement of water <br /> along this interface. These temperature deflections are less apparent or non- <br /> existent at the high position. The thermocouples in this location are covered by <br /> the cementitious board (see Figure 1), so that water is not likely in direct contact <br /> with the insulation specimen at this high vertical location. <br /> With the.possible exception of the lowest position (50 cm up from the slab), the <br /> concrete, which is behind:thessPecimen, generally do not show corresponding <br /> temperature deflections during these events. This suggests that the concrete <br /> wall is remaining dry behind the insulation. <br /> s <br />