Evaluating the creep behaviour of plastic-processed aggregate-based concrete

Figures & Tables

Type of model
AASHTO LRFD (2007) [39]	ACI 209.2R-08 [40]
B = ( 61 − 0.58 f c ′ ) B=(61-0.58\hspace{.25em}fc^{\prime} )	B = 10 B=10
d = 1 d=1	d = 0.6 d=0.6
λ = 1.9 \lambda =1.9	λ = 2.35 \lambda =2.35
γ c = k v s k h k f t o − 0.118 {\gamma }_{c}={k}_{vs}{k}_{h}{k}_{f}{t}_{\text{o}}^{-0.118}	γ c = γ l a γ H γ v s γ s γ ρ γ α {\gamma }_{c}={\gamma }_{la}{\gamma }_{H}{\gamma }_{vs}{\gamma }_{s}{\gamma }_{\rho }{\gamma }_{\alpha }
K v s = 1.45 − 0.0051 ( v / s ) {K}_{vs}\hspace{.25em}=\hspace{.25em}1.45\hspace{.25em}-\hspace{.25em}0.0051(v/s) ≥ 1.0	γ l a = 1.25 ( t o ) − 0.118 {\gamma }_{la}=1.25{({t}_{o})}^{-0.118}
K h = 1.56 − 0.008 RH {K}_{h}\hspace{.25em}=\hspace{.25em}1.56\hspace{.25em}-\hspace{.25em}0.008\text{RH}	γ H = 1.27 − 0.0067 RH {\gamma }_{H}=1.27-0.0067\text{RH}
k f = 35 7 + f c ′ {k}_{f}=\frac{35}{7+fc^{\prime} }	γ v s = 2 / 3 1 + 1.13 · e − .0213 v s {\gamma }_{vs}=2/3\left[1+1.13\cdot {\text{e}}^{-.0213\left(\frac{v}{s}\right)}\right]
	γ s = 0.82 + 0.00264 ( S l ) {\gamma }_{s}=0.82+0.00264({S}_{l})
	γ ρ = 0.88 + 0.0024 ( ρ a ) {\gamma }_{\rho }=0.88+0.0024({\rho }_{a})
	γ α = 0.46 + 0.09 α {\gamma }_{\alpha }=0.46+0.09\alpha

Concrete type	Coefficient of correlation (equation (2))
PPAC25	0.98
PPAC50	0.96
PPAC75	0.97
PPAC100	0.97

Model type	Parameter	Concrete type
Model type	Parameter	PPAC25	PPAC50	PPAC75	PPAC100
ACI 209.2R-08	γ l a {\gamma }_{la}	0.844	0.844	0.844	0.844
	γ H {\gamma }_{H}	1.015	1.015	1.015	1.015
	γ v s {\gamma }_{vs}	1.158	1.158	1.158	1.158
	γ s {\gamma }_{s}	1.189	1.268	1.282	1.321
	γ ρ {\gamma }_{\rho }	0.88	0.88	0.88	0.88
	γ α {\gamma }_{\alpha }	0.73	0.73	0.73	0.73
	γ c {\gamma }_{c}	0.759	0.810	0.819	0.844
	C u {C}_{u}	3.30	2.83	3.50	2.40
	λ PA = C u / γ c {\lambda }_{\text{PA}}={C}_{u}/{\gamma }_{c}	4.35	3.49	4.27	2.84

Concrete series	W/C	Total water	Free water	Cement	Fine aggregate	Coarse aggregate
						PPA	CNA
	kg/m³
CN	0.50	240.3	225	450	880	—	688
PPAC25		239			847	141	516
PPAC50		237.6			815	282	344
PPAC75		236.2			782	423	172
PPAC100		234.8			750	565	—

Sample	Dry density (kg/m³)	Compressive strength (MPa)	Tensile strength (MPa)	Flexural strength (MPa)	Modulus of elasticity (GPa)	Poisson ratio	Abrasion-weight loss (g)
CN	2,183	41.8	3.58	5.42	27.82	0.25	0.40
PPAC25	2,086	35.3	3.32	5.24	20.58	0.28	0.60
PPAC50	1,995	31.7	2.42	5.04	15.06	0.38	0.61
PPAC75	1,896	30.4	2.36	4.47	10.66	0.39	0.63
PPAC100	1,777	30.2	2.25	3.99	10.14	0.39	0.66