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

Table 1

Raw material grading according to inhibition index.

Inhibition index (I)	Grading
I ≤ 10	Low inhibition
10 < I ≤ 50	Medium inhibition
50 < I ≤ 100	High inhibition
I > 100	Extreme inhibition

Source: Okino et al. [13].