Impact Resistance of Rubberized Self-Compacting Concrete

Peer review under responsibility of National Water Research Center.

Figures & data

Table 1 Mix proportions of concrete mixes.

Mix No.	Cement	Water	Gravel	Sand	SP	CDK	Rubber
	(kg/m^3)	(kg/m^3)	(kg/m^3)	(kg/m^3)	(kg/m^3)	(kg/m^3)	(kg/m^3)
RSCC-00	360.00	202.50	805.58	805.58	9.00	90.00	0.00
RSCC-10	360.00	202.50	804.09	776.26	10.35	90.00	27.83
RSCC-20	360.00	202.50	807.07	751.19	7.65	90.00	55.87
RSCC-30	360.00	202.50	807.07	564.95	6.75	90.00	83.81
RSCC-40	360.00	202.50	808.06	484.84	6.75	90.00	111.89

Fig. 1 Impact test instrument.

Table 2 Concrete fresh properties.

Mix No.	Passing ability (%)	Flow-ability (mm)
RSCC-00	84	650
RSCC-10	79	630
RSCC-20	76	600
RSCC-30	75	590
RSCC-40	73	575

Fig. 2 Compression stress–strain curves for all mixes.

Fig. 3 Compressive strength for all mixes.

Fig. 4 Splitting and flexural strength for all mixes.

Fig. 5 Normal distribution density for (a) FC, (b) UR.

Fig. 6 Average blows with respect to rubber content.

Table 3 Statistical parameters for blow numbers for each mix.

Mix No.	First crack/ultimate impact resistance
	Mean (blows)	Standard deviation (blows)	Coefficient of variance (%)
RSCC-0	25/29	21.83/21.97	87.31/75.74
RSCC-10	45/52	27.01/27.68	60.02/53.23
RSCC-20	63/70	33.88/33.99	53.79/48.56
RSCC-30	75/81	43.02/44.06	57.36/54.40
RSCC-40	63/71	38.84/39.54	61.65/55.70