Advances in Materials Science and Engineering

Research Article

Late-Age Properties of Concrete with Different Binders Cured under 45°C at Early Ages

Table 1

Results of late-age properties of concrete cured at high temperature.


Ref. number	Cementitious system	Curing regimes			Late-age properties
Ref. number	Cementitious system	Precuring time	Maximum temperature	Duration at the maximum temperature	Late-age properties

[7]	Type I, V cement, FA	24 h	10, 23, 35, 50°C	CT: until testing ages	Lower late-age strength and elastic modulus of the concrete cured at 50°C.

[20]	Type I, V cement	24 h	10, 23, 50°C	CT: until testing ages	Lower 28-day strength of the concrete cured at 50°C

[21]	PC	24 h	5, 20, 30, 40°C	CT: until testing ages	Lower strength and coarser porosity of the samples cured at 40°C.

[22]	PC	24 h	4, 22, 40, 85°C	CT: until testing ages	Lower strength and coarser porosity of the samples cured at 40°C and 85°C

[23]	PC, GGBS	24 h	25, 35, 45, 55, 100°C	CT: until testing ages	Lower strength of plain cement concrete cured at 45 up to 100°C, while higher strength of samples containing GGBS cured at elevated temperature

[24]	PC GGBS LP	24 h	20, 30, 40, 50°C	CT: until testing ages	Lower 28-day strength of all samples cured at 40 and 50°C

[25]	PC	0, 1, 2, 6 d	40°C	VT: 1 d; CT: until testing ages	Almost no negative effects on late-age strength of samples cured at 40°C with precuring time.

[26]	PC, NP	0 h	40, 60°C	VT: 1, 3, 7 d; CT: until testing ages	Lower strength of the plain cement concrete and higher strength of the concrete containing natural pozzolan cured at 40°C and 60°C (CT) at 28 and 90 days Lower strength of the concrete containing natural pozzolan cured at 40°C and 60°C (VT) at 28 and 90 days

[27]	PC, LP, NP, GGBS	24 h	20, 30, 40, 50°C	CT: until testing ages; VT: 1, 3, 7, 28 d	Decreasing strength of all samples with temperature rise, and lower decreasing ratio of the samples containing mineral admixtures

[28]	PC, FA	1 d	27, 34, 42, 50°C	VT: 7 d	Lower late-age strength of OPC concrete cured at 42 and 50°C, while higher for OPC-FA concrete

[29]	PC	4, 7 h	42, 46, 85°C	VT: 4, 12, 14 h	Similar microstructure of samples cured at 46 and 42°C with that at 20°C, while coarser microstructure of samples cured at 85°C

[30]	PC, PFA, SF	24 h	20, 60°C	VT: 3 d	Higher strength of the mixes containing pulverized fuel ash and silica fume cured at 60°C, while lower strength of Portland cement mixes cured at 60°C than those under normal curing

[31]	PC, FA, GGBS	3.5 h	70°C	VT: 4 h	Higher 28-day strength of the concrete containing mineral admixtures cured at 70°C

Note. PC: Portland cement; FA: Fly ash; PFA: pulverized fuel ash; NP: natural pozzolan; SF: silica fume; GGBS: ground granulate blast furnace slag; LP: limestone powder. CT: constant temperature; VT: variable temperature.