Table 3. Results of experimental studies of the production process of fiberboard with the addition of coniferous wood greenery

Experiment number	The content of needles in the total mass, q, %	The size of the needle particles, f, mm	Board density, P, kg/m3	Board strength, Pr, MPa	Board swelling in 24 hours, N, %	Water absorption of the board in 24 hours, S, %	Board thickness, T, mm	Moisture content of the board, W, %
1	2	3	4	5	6	7	8	9
1	4	0.2	910 ± 2	41.6 ± 0.4	9.9 ± 0.1	20.0 ± 0.2	2.4	9.4
2	8	0.2	920 ± 2	42.2 ± 0.4	9.8 ± 0.1	20.1 ± 0.2	2.4	8.2
3	12	0.2	915 ± 2	39.8 ± 0.3	10.1 ± 0.1	21.2 ± 0.2	2.6	9.9
4	16	0.2	990 ± 3	28.2 ± 0.2	16.2 ± 0.2	26.7 ± 0.3	2.6	9.6
5	4	0.4	920 ± 2	37.2 ± 0.3	10.2 ± 0.1	20.6 ± 0.2	2.6	8.1
6	8	0.4	940 ± 2	39.8 ± 0.3	10.0 ± 0.1	20.7 ± 0.2	2.5	9.0
7	12	0.4	945 ± 2	34.5 ± 0.3	10.2 ± 0.1	21.9 ± 0.2	2.4	8.1
8	16	0.4	995 ± 3	28 ± 0.2	17.3 ± 0.2	27.9 ± 0.3	2.4	8.8
9	4	0.6	935 ± 2	36.2 ± 0.3	10.3 ± 0.1	20.9 ± 0.2	2.5	9.2
10	8	0.6	945 ± 2	39 ± 0.3	10.4 ± 0.1	21.2 ± 0.2	2.5	9.7
11	12	0.6	952 ± 2	37.5 ± 0.3	10.8 ± 0.1	22.8 ± 0.2	2.5	8.9
12	16	0.6	1,050 ± 3	27 ± 0.2	18.9 ± 0.2	29.3 ± 0.3	2.4	8.5
13	4	0.8	962 ± 2	35.6 ± 0.3	10.8 ± 0.1	21.6 ± 0.2	2.6	8.1
14	8	0.8	980 ± 2	37.9 ± 0.3	11 ± 0.1	22.3 ± 0.2	2.4	8.7
15	12	0.8	990 ± 3	36.1 ± 0.3	11.5 ± 0.1	23.8 ± 0.2	2.5	9.1
16	16	0.8	1,100 ± 4	25 ± 0.2	21.5 ± 0.2	32.5 ± 0.4	2.5	9.6
Standard1)	-	-	800–1,100	°C 33	≤ 23	-	2.2–2.8	≤ 10

GOST 4598-86 Fiberboard for group B plates.