Structural Flakeboards and Composites 



3063 



. MAXIMUM TEMPERATURE RISE 

 (AVERAGE TE-TO) 



0. NEAT CEMENT 



1. CHESTNUT OAK 



2. WHITE OAK 



3. WATER OAK 



4. POST OAK 



5. BLACK OAK 



6. BLACK TUPELO 



7. SCARLET OAK 



8. SOUTHERN RED OAK 



9. RED MAPLE 



10. YELLOW POPLAR 



11. SWEETGUM 



10 15 20 25 30 

 TIME (HOURS) 



35 40 



45 



4 

 TIME 



6 8 



(HOURS) 



10 



12 



Figure 24-67. — Effect of species on the hydration of portland-cement, wood, water 

 mixtures. Maximum temperature rise = hydration temperature (TE) minus initial 

 temperature (TO). (Top) Untreated wood. (Bottom) Wood boiled and washed 6 hours 

 in distilled water. (Drawings after Moslemi et al., text footnote^'.) 



