Figure 21 shows the deflection and strains

computed by NELAPAV for the f4w6 case. The

horizontal strain at the base of the asphalt is

small through the winter with a few small peaks

during short-term thawing periods. It then ex-

hibits high peaks during spring thaw and sum-

mer. It appears to be closely related to the as-

phalt temperature/modulus during the spring

thaw. The vertical strain at the top of the sub-

grade is also low during the winter with three

sharp peaks during thaw events. The vertical

strain also rises during spring and summer,

closely tracking the pavement surface tempera-

ture. The deflection plotted is from the base of

the asphalt, but is assumed to be similar to the

surface deflection. It also shows peaks during

midwinter thaws, and a maximum peak during