Density kg/m³

Soak treatment^a

Cement—B. vulgaris flake mix ratio^k

1:1

1:5

2:1

2:5:1

3:1

No of boards produced

1200

Control

2

2

2

2

2

1200

Cold water

2

2

2

2

2

1200

Hot water

2

2

2

2

2

1200

1% NaOH

2

2

2

2

2

800

Control

2

2

2

2

2

800

Cold water

2

2

2

2

2

800

Hot water

2

2

2

2

2

800

1% NaOH

2

2

2

2

2