Abstract:To solve the problems of phase change materials (PCM) including low thermal conductivity and easy washout and loss after liquefaction in current studies on borehole backfill materials, capric acid-lauric acid/expanded graphite (CA-LA/EG) PCM admixture with high thermal conductivity and high heat capacity was developed by using expanded graphite as the carrier. The PCM admixture is mixed with original sands (drilling debris) to make phase change backfill materials (PCBM). When the PCM backfilling is applied, th… Show more
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