Portland Pozzolan Cement

Portland Pozzolan Cement Application

This type of cement more in addition to the general uses, is used in huge structures as well, because It has less hydration heat that Cement type 1 and 2 and the most important advantage of this cement is its more chemical resistance and this type of cement is recommended in environments that the sulfates and Clare attack is more probable. Speed of growing resistance in this type of cement is less than cement type 2 and type 5 but in long term loss of resistance is recovered. We should pay attention that to increase concrete’s workability you must not increase the proportion of water more than cement, on the other hand because of low speed and hydration heat and slow pozzolan reaction with cement compounds curing concrete with pozzolan cement has to be continuous and wet and in other words the concrete curing situation in comparison with Portland cements has to be provided for longer time. Totally important specialties of concrete made of Pozzolan concrete are less permeability, high durability and favorable chemical resistant.

Row	Type of Cement	Type of Test	Forced limits matching Iran Standard under No. ISIRI389	Delijan Cement Specs
2	Portland Pozzolan Cement	3 day Compressive Strength	Min 100 kg/cm2	200 kg/ cm2
		7 day Compressive Strength	Min 175 kg/cm2	280 kg/cm2
		28 day Compressive Strength	Min 315 kg/cm2	400 kg/ cm2