Research Article

Compatibility of Pretreated Coir Fibres (Cocos nucifera L.) with Portland Cement to Produce Mineral Composites

Table 2

Inhibitory index of coir fibre mixed with Portland cement.

Treatment 𝐻 𝑚 (h) 𝑇 𝑚 (°C) 𝑆 𝑚 (°C/h)I (%)

Cement11.0055.06
Untreated1.0830.4728.21186.28A
Cold water20.0232.921.6420.85B
80°C water17.5634.151.9414.07B
CaCl214.8642.882.892.97C
NaOH12.8746.963.652.24C

Note: distinct letters in the same column indicate a significant difference by the LSD test at α = 0.05 level; 𝐻 𝑚 : time to reach maximum temperature; 𝑇 𝑚 : maximum temperature; 𝑆 𝑚 : maximum increment of temperature.