Sixty three brick samples of different compositions and materi- als were used for the thermal conductivity tests. The samples were prepared using the steel frame presented in Fig. 3.
For each straw type and each treatment, three identical material samples were used. A thirty samples of each fibre type were used as shown in Fig. 5. After drying, the samples were stored under lab room conditions, 21.7 ◦ C and 56.1% for 60 days. The samples were then placed in the oven to dry at 70◦C until constant weight was achieved. This means that thermal conductivity values were measured for drying samples (dry แรมด้า-value).