Table 6 Compressibility characteristics... | Emerald Publishing

Table 6

Compressibility characteristics of inundated compacted biosolid materials

Test material	N: %	Initial state				$σ_{v}^{'} range : kPa$	σ _s: kPa	Apparent $σ_{\max}^{'} : kPa$	C _c	C _r	C _R	R _R	Loading stages				k _v: m/s
Test material	N: %	w _i: %	e _i	γ _d: kN/m³	S _r: %	$σ_{v}^{'} range : kPa$	σ _s: kPa	Apparent $σ_{\max}^{'} : kPa$	C _c	C _r	C _R	R _R	c _v: m²/year	C_α	C _αe	C _αe/C _c	k _v: m/s
Oedometer 3 for As-Samra WWTP biosolids (present investigation)	62·6	107	1·98	5·53	91	27–1200	27	75	0·57	0·16	0·19	0·05	0·03–0·07	0·023–0·092	0·07–0·27	0·12–0·48	1·3–7·8 × 10⁻¹¹ ( $σ_{v}^{'}$ = 37·5–200 kPa)
SP-compacted Melbourne Western WWTP aged biosolids (Arulrajah et al., 2011)	35·4–38·5	51–53	1·49–1·63	8·95–9·81	—	31–992	—	190–210	0·38–0·45	0·045–0·055	—	—	0·04–1·0	0·003–0·020	—	—	1·24–1·60 × 10⁻⁷ (fh)
SP-compacted Melbourne Western WWTP aged biosolids (Arulrajah et al., 2013)	26·5–27·0	50–55	0·87–1·05	8·47–9·29	—	50–800	—	190–210	0·56–0·64	0·038–0·043	—	—	0·4–0·5	0·004–0·018	—	—	1·24–1·60 × 10⁻⁷ (fh)
SP-compacted Stonecutters Island WWTP biosolids, Hong Kong (Lo et al., 2002)	58·5	43	2·92	3·88	—	12–200	—	—	1·06	—	0·27	—	—	—	—	—	1·0 × 10⁻⁹ (fw)
SP-compacted Stonecutters Island WWTP biosolids, Hong Kong (Lo et al., 2002)	58·5	180	4·43	2·80	—	12–200	—	—	1·66	—	0·31	—	—	—	—	—	1·0 × 10⁻¹¹ (fw)
SP-compacted Tullamore WWTP biosolids, Ireland (O’Kelly, 2005c)	70	130	2·12	4·91	95	25–400	25	—	0·60	0·19	0·19	0·06	—	0·02–0·05	0·06–0·16	0·10–0·26	—
SP-compacted Tullamore WWTP biosolids, Ireland (O’Kelly, 2006a)	70	100	1·62	5·98	96	25–400	25	200	0·35	0·18	0·13	0·07	—	0·02–0·06	0·05–0·16	0·15–0·45	—
Valencia WWTP sewage sludge, Trinidad (Stone et al., 1998)	67·2	229	2·75	3·14	—	10–1000	—	—	1·02	—	0·27	—	—	—	—	—	—
San Fernando WWTP sewage sludge, Trinidad (Stone et al., 1998)	49·1	214	3·25	3·51	—	10–1000	—	—	0·99	—	0·23	—	—	—	—	—	—
Trincity WWTP sewage sludge, Trinidad (Stone et al., 1998)	33·1	151	1·4	3·80	—	10–1000	—	—	0·60	—	0·25	—	—	—	—	—	—
Arima WWTP sewage sludge, Trinidad (Stone et al., 1998)	41·7	112	1·5	5·26	—	10–1000	—	—	0·51	—	0·20	—	—	—	—	—	—
Santa Cruz WWTP sewage sludge, Trinidad (Stone et al., 1998)	14·3	83	1·7	7·41	—	10–1000	—	—	0·50	—	0·19	—	—	—	—	—	—

Test material	N: %	Initial state				$σ_{v}^{'} range : kPa$	σ _s: kPa	Apparent $σ_{\max}^{'} : kPa$	C _c	C _r	C _R	R _R	Loading stages				k _v: m/s
Test material	N: %	w _i: %	e _i	γ _d: kN/m³	S _r: %	$σ_{v}^{'} range : kPa$	σ _s: kPa	Apparent $σ_{\max}^{'} : kPa$	C _c	C _r	C _R	R _R	c _v: m²/year	C_α	C _αe	C _αe/C _c	k _v: m/s
Oedometer 3 for As-Samra WWTP biosolids (present investigation)	62·6	107	1·98	5·53	91	27–1200	27	75	0·57	0·16	0·19	0·05	0·03–0·07	0·023–0·092	0·07–0·27	0·12–0·48	1·3–7·8 × 10⁻¹¹ ( $σ_{v}^{'}$ = 37·5–200 kPa)
SP-compacted Melbourne Western WWTP aged biosolids (Arulrajah et al., 2011)	35·4–38·5	51–53	1·49–1·63	8·95–9·81	—	31–992	—	190–210	0·38–0·45	0·045–0·055	—	—	0·04–1·0	0·003–0·020	—	—	1·24–1·60 × 10⁻⁷ (fh)
SP-compacted Melbourne Western WWTP aged biosolids (Arulrajah et al., 2013)	26·5–27·0	50–55	0·87–1·05	8·47–9·29	—	50–800	—	190–210	0·56–0·64	0·038–0·043	—	—	0·4–0·5	0·004–0·018	—	—	1·24–1·60 × 10⁻⁷ (fh)
SP-compacted Stonecutters Island WWTP biosolids, Hong Kong (Lo et al., 2002)	58·5	43	2·92	3·88	—	12–200	—	—	1·06	—	0·27	—	—	—	—	—	1·0 × 10⁻⁹ (fw)
SP-compacted Stonecutters Island WWTP biosolids, Hong Kong (Lo et al., 2002)	58·5	180	4·43	2·80	—	12–200	—	—	1·66	—	0·31	—	—	—	—	—	1·0 × 10⁻¹¹ (fw)
SP-compacted Tullamore WWTP biosolids, Ireland (O’Kelly, 2005c)	70	130	2·12	4·91	95	25–400	25	—	0·60	0·19	0·19	0·06	—	0·02–0·05	0·06–0·16	0·10–0·26	—
SP-compacted Tullamore WWTP biosolids, Ireland (O’Kelly, 2006a)	70	100	1·62	5·98	96	25–400	25	200	0·35	0·18	0·13	0·07	—	0·02–0·06	0·05–0·16	0·15–0·45	—
Valencia WWTP sewage sludge, Trinidad (Stone et al., 1998)	67·2	229	2·75	3·14	—	10–1000	—	—	1·02	—	0·27	—	—	—	—	—	—
San Fernando WWTP sewage sludge, Trinidad (Stone et al., 1998)	49·1	214	3·25	3·51	—	10–1000	—	—	0·99	—	0·23	—	—	—	—	—	—
Trincity WWTP sewage sludge, Trinidad (Stone et al., 1998)	33·1	151	1·4	3·80	—	10–1000	—	—	0·60	—	0·25	—	—	—	—	—	—
Arima WWTP sewage sludge, Trinidad (Stone et al., 1998)	41·7	112	1·5	5·26	—	10–1000	—	—	0·51	—	0·20	—	—	—	—	—	—
Santa Cruz WWTP sewage sludge, Trinidad (Stone et al., 1998)	14·3	83	1·7	7·41	—	10–1000	—	—	0·50	—	0·19	—	—	—	—	—	—

fh, falling-head permeameter; fw, flexible-wall permeameter; values shown in italics were determined from reported experimental data as part of the present investigation