Fig. 10
From: Improving durability of cross laminated timber (CLT) with borate treatment
Average time to initial peak heat release rate (pHRR) (a) and initial peak heat release rate (pHRR) (b) untreated and dip-treated samples to retention levels of 2.7 and 4.5 kg/m3 B2O3 and spray treated triplicate samples (error bars show standard deviation). Means with the same letters are not significantly different at the 0.05 confidence interval (p values < 0.05)