Appendix J — Shrinkage characteristic data

Shrinkage characteristics data from Bronswijk and Evers-Vermeer (1990) are presented in Table J.1. In this table, \(\rho_s\) represents the density of the solid phase.

Table J.1: Shrinkage characteristic data (Bronswijk and Evers-Vermeer 1990)

Depth (cm)				Weight of soil		Weight of mineral parts				Shrinkage parameters
From	To	Horizon (-)	ρs (g cm-3)	CaCO3 (%)	Organic matter (%)	<2 μm (%)	2-16 μm (%)	16_50 μm (%)	>50 μm (%)	e0 (-)	v1 (-)	v2 (-)
Oosterend
0	22	A11	2.52	0.0	10.3	39.9	20.9	33.4	5.8	0.45	1.0	0.00
22	42	ACg	2.60	0.0	6.9	40.7	25.9	28.3	5.1	0.37	0.6	0.00
42	78	C1g	2.66	2.5	4.5	58.1	24.7	16.2	1.1	0.43	0.7	0.00
78	120	C2g	2.68	6.9	2.2	24.1	14.3	53.5	8.1	0.56	0.7	0.00
Nieuw-Beerta
0	26	Ap	2.64	1.4	4.8	45.4	27.8	16.6	10.2	0.52	0.8	0.20
26	34	A12	2.61	0.8	3.9	45.9	27.4	18.9	6.8	0.46	0.9	0.00
34	56	C11g	2.62	1.7	2.2	51.6	29.2	15.4	3.8	0.48	0.9	0.10
56	75	C12g	2.68	3.3	1.9	39.1	24.1	32.8	4.0	0.50	0.9	0.10
75	107	C13g	2.69	0.3	3.0	59.3	31.7	6.9	2.1	0.50	0.9	0.05
Nieuw Statenzijl
0	29	Ap	2.65	9.0	3.3	52.0	24.2	20.4	3.4	0.49	0.7	0.20
29	40	AC	2.67	10.6	2.9	62.9	17.0	17.7	2.4	0.50	0.8	0.20
40	63	C21	2.69	11.3	2.7	52.4	25.3	18.3	4.0	0.55	0.8	0.10
63	80	C22g	2.66	9.8	2.8	55.8	24.1	16.7	3.4	0.58	1.0	0.10
80	100	C23g	2.69	11.6	2.2	59.6	26.4	12.2	1.8	0.57	1.0	0.10
Schermerhorn
0	21	A11	2.59	11.7	5.9	34.8	17.9	27.9	19.5	0.52	1.0	0.00
21	52	A12	2.61	11.1	6.2	42.9	22.1	26.5	8.5	0.53	0.9	0.00
52	77	C21g	2.62	17.6	3.7	32.1	20.4	33.2	14.2	0.82	1.2	0.00
77	100	C22g	2.63	18.8	3.1	16.2	10.1	37.8	36.0	0.79	1.0	0.00
Dronten
0	22	Ap1	2.66	9.9	2.6	36.8	22.2	27.5	13.5	0.48	0.8	0.00
22	38	A12	2.66	8.1	2.2	45.6	27.2	22.9	4.3	0.56	0.8	0.00
38	60	C22g	2.63	6.6	7.6	35.3	43.9	19.7	1.1	0.68	1.2	0.10
60	90	C23g	2.59	5.8	7.0	15.9	23.9	58.2	2.0	1.10	2.0	0.00
90	110	C24g	2.57	4.6	0.5	20.2	27.2	51.2	1.4	1.10	2.1	0.00
Bruchem
0	18	A11	2.52	0.0	9.9	58.1	30.7	10.2	1.0	0.30	0.9	0.00
18	30	A12	2.60	0.0	7.5	55.8	35.5	8.1	0.6	0.34	0.9	0.00
30	58	C11g	2.64	0.0	3.7	59.6	29.5	10.1	0.8	0.37	0.5	0.00
58	85	C12g	2.59	0.0	3.8	51.7	37.0	9.6	1.7	0.40	0.8	0.05
Kats
0	35	Ap	2.67	10.2	2.1	30.8	15.7	30.2	23.3	0.43	1.0	0.00
35	60	C21g	2.67	13.6	1.6	46.4	20.5	21.2	11.9	0.45	0.8	0.00
60	80	C22g	2.70	15.7	1.3	41.9	18.3	23.3	15.5	0.40	1.3	0.00
80	95	C23g	2.69	9.5	0.3	16.2	6.7	21.0	56.1	0.40	1.3	0.00

Measured shrinkage characteristics of four peat soil profiles in the Netherlands, as described by Hendriks (2004), are presented below. In the figures, black dots represent measurements, and the lines show fits based on Equation 6.29.

Table J.2: Description, organic matter and clay content (mass-%) of the peat soils. Figures in sample codes refer to sample depths in cm.

Sample code	Soil description	Organic matter (%)	Clay (%)
A-15	peaty clay	33	40
A-25	clayey peat	62	21
A-45	sphagnum peat	93	1
D-80	wood peat	81	5
N-80	sphagnum peat	91	2
V-10	peaty, sandy clay	18	17
Z-10	clayey peat	48	36
Z-60	wood peat	82	4
Z-80	wood peat	83	4

Bronswijk, J. J. B., and J. J. Evers-Vermeer. 1990. “Shrinkage of Dutch Clay Soil Aggregates.” Journal Article. Netherlands Journal of Agricultural Science 38 (2): 175–94. https://doi.org/10.18174/njas.v38i2.16603.

Hendriks, R. F. A. 2004. “An Analytical Equation for Describing the Shrinkage Characteristics of Peat Soils.” Book Section to Wise Use of Peatlands. Proceedings of the 12th International Peat Congress, edited by J. Päivänen. Tampere, Finland.