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EPS Geofoam 2001,3rd International Conference, Salt Lake City,December 2001 5 <br /> Furthermore there is hardly any change in the water <br /> content with time.Samples retrieved from the outer <br /> parts of blocks facing the surrounding soil,may have <br /> a higher water content as maybe seen from figure 6. <br /> But only 500 mm further into the block the water <br /> content is again below 1%by volume.So the average x <br /> density of drained fills therefore has values of p<30 1 ' <br /> k m3.This is well below the ' -�-Solbotmoan <br /> g/ specified design value s t Langhus '' <br /> for such fills. <br /> -�Lenken Q <br /> sus ' ga <br /> In blocks,which are periodically submerged,water <br /> contents of up to 4 /o by volume have been measured <br /> r *� £ <br /> In permanently submerged blocks measured water <br /> contents have reached values close to 10%by volume <br /> with some increase over the years fig.7.Further zs <br /> increases above 10%by volume are,however,not to <br /> be expected.For submerged fills the average densityQ <br /> is therefore of the order of p=90-95 kg/m3 after <br /> some 20 years in the ground.The water content Figure 5.Typical drained situation from 3 EPS fills <br /> decreases rapidly above the water table and show <br /> values for drained conditions only some 200 mm <br /> above the highest water level. <br /> M <br /> IM <br /> �N10 <br /> � <br /> r r f z t fr a <br /> Or <br /> Q 3 Ham" > df <br /> IN <br /> 4.� <br /> srs �P�e •'��, � ' � y ,* s �,¢ �t ..fir �� �5 <br /> Figure 7.Typical water content in submerged EPS <br /> Maur 6.Horizontal gradient of water in EPS. Figure <br /> Long term performance and durability of EPS as a lightweight filling material <br />