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Shin'ichi N akatsuji3 *, A k ari K itam u ra3, A tsushi T akai3 Kazuyoshi N ishikaw ab, Yukio M o rim o to b, N o ritaki Y asuokab, H aru k i K aw am ura,3 H iroyuki A nzai3 a D ep artm en t o f M aterial Scien ce and b D ep artm en t o f Life Scien ce, Faculty o f S cien ce, H im eji Institute o f T echnology, K am igori, H yogo 6 7 8 -1 2 , Japan Z. N aturforsch. 53 b, 4 9 5 -5 0 2 (1998); Verdazyl R adical, Stable R adical, CT C om p lex, M agnetic Property, X -R ay D ata Several charge-transfer (C T ) com p lexes d erived from l,5-d ip h en yl-3-(p -su b stitu ted -p h enyl)-verdazyl radicals and T C N Q F 4 (2,3,5,6-tetraflu oro-7,7,8,8-tetracyan oquinod im ethan e) or D D Q (2,3-d ich lo ro -5 ,6 -d icy a n o -l,4 -b en zo q u in o n e) w ere prepared and their m agnetic properties w ere investigated . T he X-ray crystal structural analyses on the CT com p lexes consisted o f 3-(4-m eth oxyp h en yl)-, 3 -(4 -to ly l)-as w ell as 3-(4-ch lorop henyl)-verdazyl radicals and T C N Q F 4 w ere carried out and correlated w ith their m agnetic properties in which large decrease o f m agnetic su scep tib ility was o b serv ed in each com plex.

15This paper focuses on the validation of a prediction model for the thermally induced excess pore 16 water pressure generated in saturated soils during undrained heating. A thermo-elastic analysis was 17 calibrated using experimental data presented in the literature for normally consolidated soils having 18 different mineralogical compositions. The magnitude of thermally induced excess pore water pressure 19 for these soils was observed to depend on the initial void ratio, the initial effective stress, the thermal 20 coefficient of cubical expansion of the soil particles, the change in temperature, the compressibility of 21 the soil skeleton, and the physico-chemical coefficient of structural volume change. An empirical 22 relationship between the physico-chemical coefficient of structural volume change and the plasticity 23 index was proposed to predict the thermally induced excess pore water pressure for saturated, normally 24 consolidated soils. To validate the model, an undrained heating test was performed independently on 25 a specimen of normally consolidated kaolinite clay, and the measured thermally induced excess pore 26 water pressures were found to match well with the model predictions. 27

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