Arrangement and method for curing concrete products
An arrangement for curing concrete products, which contains a curing chamber having several curing cells arranged in at least one column, in which curing cells are located on a vertical stack. The curing cells are formed to curing cell groups, in which one curing cell group contains at least one curing cell, advantageously 2-4 curing cells, and wherein the curing cell group is insulated in respect of other curing cell groups of the curing chamber. A method for curing concrete products in a curing chamber, which includes several curing cells arranged in at least one column, in which the curing cells are located on a vertical stack. In the method the moisture level of curing cells is controlled such that in the curing cells the temperature is desired.
1. An arrangement for curing concrete products, which comprises:
a curing chamber, comprising several curing cells arranged in at least one column, wherein the curing cells are located on a vertical stack, and formed into curing cell groups, wherein one curing cell group comprises:
at least one curing cell,
a moisture measurement device and a temperature sensor to measure respectively a moisture level and a temperature in the at least one curing cell/one curing cell group,
at least one temperature measurement device comprising at least one sensor to measure a surface temperature of at least one concrete product to be cured in the at least one curing cell, and
a moisture controlling device for controlling the moisture level within the at least one curing cell, such that a condensation point temperature is kept slightly higher or slightly lower than the surface temperature of the at least one concrete product located in the at least one curing cell, or at the surface temperature depending on a desired product quality, the controlling is automatically provided using the measured moisture level and temperature, and the at least one measured surface temperature of the at least one concrete product,
and wherein the one curing cell group is insulated with respect to other curing cell groups in the curing chamber.
2. The arrangement according to claim 1 , wherein the curing cell group is formed in at least one column by horizontal separating insulating walls limiting the curing cell group in a vertical direction.
3. The arrangement according to claim 1 , wherein the curing cell group is formed by vertical separating insulation walls limiting the curing cell groups in a horizontal direction.
4. The arrangement according to claim 1 , wherein the curing cell group has moisture control means for controlling the temperature within the curing cell group.
5. The arrangement according to claim 1 , wherein the curing cell group comprises moisture nozzles and wherein the moisture nozzles control flow of moisture.
6. The arrangement according to claim 1 , wherein the curing cell groups of the curing chamber are connected to a common air channel system, which comprises air channels to curing cells and a heater for heating the air in the common air channel system.
7. The arrangement according to claim 6 , wherein the common air channel system comprises an air circulator.
8. A method for curing concrete products in a curing chamber, which comprises several curing cells arranged in at least one column, wherein the curing cells are located on a vertical stack, which curing cells are formed into curing cell groups wherein one curing cell group comprises:
at least one curing cell,
a moisture measurement device and a temperature sensor,
at least one temperature measurement device comprising at least one sensor, and
a moisture controlling device for controlling moisture within the curing cell group,
wherein the curing cell group is insulated with respect to other curing cell groups in the curing chamber,
wherein the method comprises the steps of:
measuring a surface temperature of at least one concrete product in the at least one curing cell with the at least one temperature measurement device,
measuring a moisture level and a temperature in of the at least one curing cell/one curing cell group with the moisture measurement device and the temperature sensor, and
controlling the moisture level within the at least one curing cell with the moisture controlling device such that a condensation point temperature is kept slightly higher or slightly lower than the surface temperature of the at least one concrete product located in the at least one curing cell, or at the surface temperature depending on a desired product quality, the controlling is automatically provided using the measured moisture level and temperature, and the surface temperature of the at least one concrete product in the at least one curing cell,
that a condensation point temperature is kept little higher or lower than the surface temperature of the at least one concrete product located in the at least one curing cell, or at the condensation point temperature depending on a desired product quality.
9. The method according to claim 8 , comprising increasing a corresponding relative moisture level as the surface temperature of a concrete product to be cured increases.
10. The method according to claim 8 , comprising measuring corresponding moisture level and temperature of each curing cell group and controlling the moisture level based on the measurement result, such that a desired moisture level and temperature is reached for the corresponding surface temperature of a concrete product in the each curing cell group.