Effects of Mixing and Curing Temperature on the Strength Development and Pore Structure of Fly Ash Blended Mass Concrete

Table 4

Compressive strength data of concretes.

Concrete (summer)	Curing; states	Compressive strength (MPa)				Concrete (Winter)	Curing; states	Compressive strength (MPa)
		3 days	7 days	28 days	91 days			3 days	7 days	28 days	91 days
OPC-S	Standard	47.9	59.2	69.7	78.9	OPC-W	Standard	51.4	65.5	78.8	82.4
	Sealed	43.8	54.6	60.5	69.7		Sealed	46.0	57.7	68.4	74.5
	1.5 m-C	51.7	55.8	60.3	60.9		1.5 m-C	64.0	71.7	73.7	74.0
	1.5 m-S	47.9	49.2	59.2	60.3		1.5 m-S	56.7	58.3	72.1	72.9
	0.8 m-C			54.9	58.7		0.8 m-C			72.1	74.6
	0.8 m-S			56.3	59.5		0.8 m-S			70.3	74.0
	0.3 m-C			57.8	62.6		0.3 m-C			67.8	69.8
BPC-S	Standard	33.9	45.8	74.4	87.5	BPC-W	Standard	34.6	49.4	81.2	90.1
	Sealed	33.8	41.0	63.9	81.0		Sealed	33.3	43.0	66.6	77.2
	1.5 m-C	60.7	63.8	64.6	69.3		1.5 m-C	56.2	64.4	75.1	78.6
	1.5 m-S	48.5	58.0	62.6	65.7		1.5 m-S	37.0	44.4	61.5	73.0
	0.8 m-C			67.5	70.1		0.8 m-C			66.8	70.1
	0.8 m-S			64.2	69.4		0.8 m-S			60.6	73.8
	0.3 m-C			67.7	70.4		0.3 m-C			58.7	72.2
FPC-S	Standard	26.6	38.7	55.0	70.1	FPC-W	Standard	28.4	42.5	59.1	75.7
	Sealed	22.8	34.5	48.9	65.4		Sealed	28.3	35.2	47.7	59.6
	1.5 m-C	46.9	52.7	55.5	54.0		1.5 m-C	38.3	55.9	57.6	62.7
	1.5 m-S	39.9	46.8	52.3	55.5		1.5 m-S	26.8	39.7	47.7	57.8
	0.8 m-C			50.8	56.1		0.8 m-C			51.2	64.3
	0.8 m-S			53.5	58.7		0.8 m-S			48.3	56.1
	0.3 m-C			55.0	59.2		0.3 m-C			46.0	64.6