. "3"^^ . . . . "50" . "Portland cement; Limestone; Hydration heat; Isothermal heat flow calorimeter; Temperature; w/c; Activation energy"@en . . "1" . . "The early-stage hydration heat characteristics of the blended binder containing 80% of Portland cement CEM I 42.5 R and 20% of limestone are studied in a dependence on w/c and temperature. The specific hydration heat power and the specific hydration heat are monitored over the time period of 72 h using an isothermal heat flow calorimeter. Experimental results show an active role of limestone in the hydration process. After 72 h its net contribution to the specific hydration heat of the blended binder, QL, is significant for all studied combinations of w/c and temperature. At 20 C QL is more pronounced for w/c = 0.35 (51.8 J/g-binder) than w/c = 0.50 (41.8 J/g-binder), contrary to 35 C where a dependence of QL on w/c is not evidenced (34.6 J/g-binder for w/c = 0.35 and 35.5 J/g-binder for w/c = 0.50). Unlike the reference Portland cement, the apparent activation energy of the analyzed Portland-limestone cement is found to depend on w/c; for w/c = 0.5 it is 35.7 kJ/mol while for w/c = 0.35 only 28.0 kJ/mol." . "Effect of w/c and temperature on the early-stage hydration heat development in Portland-limestone cement"@en . "0950-0618" . . "Effect of w/c and temperature on the early-stage hydration heat development in Portland-limestone cement"@en . "Effect of w/c and temperature on the early-stage hydration heat development in Portland-limestone cement" . "13601" . "The early-stage hydration heat characteristics of the blended binder containing 80% of Portland cement CEM I 42.5 R and 20% of limestone are studied in a dependence on w/c and temperature. The specific hydration heat power and the specific hydration heat are monitored over the time period of 72 h using an isothermal heat flow calorimeter. Experimental results show an active role of limestone in the hydration process. After 72 h its net contribution to the specific hydration heat of the blended binder, QL, is significant for all studied combinations of w/c and temperature. At 20 C QL is more pronounced for w/c = 0.35 (51.8 J/g-binder) than w/c = 0.50 (41.8 J/g-binder), contrary to 35 C where a dependence of QL on w/c is not evidenced (34.6 J/g-binder for w/c = 0.35 and 35.5 J/g-binder for w/c = 0.50). Unlike the reference Portland cement, the apparent activation energy of the analyzed Portland-limestone cement is found to depend on w/c; for w/c = 0.5 it is 35.7 kJ/mol while for w/c = 0.35 only 28.0 kJ/mol."@en . "RIV/68407700:21110/14:00211213!RIV15-GA0-21110___" . . "10.1016/j.conbuildmat.2013.09.020" . "\u010Cern\u00FD, Robert" . . . . . "8"^^ . . "[9F4CCBD61362]" . . "Construction and Building Materials" . . . "Effect of w/c and temperature on the early-stage hydration heat development in Portland-limestone cement" . "21110" . . . . "000330489200016" . . "Tydlit\u00E1t, Vratislav" . . "Matas, Tom\u00E1\u0161" . "RIV/68407700:21110/14:00211213" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "3"^^ . "P(GBP105/12/G059)" .