03-29-2014, 07:52 AM
Rapid Hardening Portland cement
Properties
Similar chemical composition as OPC but different proportion
Causes to the increased rate of early hardening
Concrete made with RHPC develops in 7 days the same strengths
High early strength is achieved by increasing the CS & CA content
More finely grounded than OPC
Allows formwork to be struck earlier
Providing savings either the quantity of formwork required in time
Produce heat earlier than OPC, so it can be used in cold weather
Qualities
RHPC is produced using carefully selected raw materials.
Strict quality control throughout each stage of the manufacturing process ensures that a consistent final product is achieved.
Strength
Rapid Hardening Portland cement achieves higher earlier strengths than OPC because it is more finely ground.
Rapid Hardening Portland cement is chemically similar to OPC and as such concrete mixes should be designed with this in mind.
In particular, optimum ultimate strength of concrete using RHPC will depend, like OPC, on careful attention to the water/cement ratio, consistent with ensuring satisfactory placing and compaction.
Properties
Similar chemical composition as OPC but different proportion
Causes to the increased rate of early hardening
Concrete made with RHPC develops in 7 days the same strengths
High early strength is achieved by increasing the CS & CA content
More finely grounded than OPC
Allows formwork to be struck earlier
Providing savings either the quantity of formwork required in time
Produce heat earlier than OPC, so it can be used in cold weather
Qualities
RHPC is produced using carefully selected raw materials.
Strict quality control throughout each stage of the manufacturing process ensures that a consistent final product is achieved.
Strength
Rapid Hardening Portland cement achieves higher earlier strengths than OPC because it is more finely ground.
Rapid Hardening Portland cement is chemically similar to OPC and as such concrete mixes should be designed with this in mind.
In particular, optimum ultimate strength of concrete using RHPC will depend, like OPC, on careful attention to the water/cement ratio, consistent with ensuring satisfactory placing and compaction.