Abstract
Enlargement of the average pore diameter on freezing fresh peat considerably decreases the tension with which moisture over and about 100 g per 100 g dry peat is retained. After freezing of fresh peat, shrinkage on drying is also much smaller and removal of water is much less irreversible; the amount of water taken up by air-dried peat is linearly related to the rate of shrinkage on drying. The volume of fresh peat decreases linearly with loss of moisture; freezing beforehand causes a strong deviation from this course of shrinkage on drying. The main effect of freezing of small volumes of peat was achieved in a single freezing period of -5 degrees C during the last three days; the effect of frost on peat is smaller when moisture content at the moment of freezing is low. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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