Tenders are invited for Procurement of test chamber for cyclic steam curing
In order to activate the volcanic ash activity, the steam curing
(C2) with 90[degrees]C steam in the tank and curing in the autoclaved reactor (C3) with the maximum temperature of 200[degrees]C and the maximum pressure of 1.3 MPa (Figures 1 and 2) are used.
There is great difference for the shrinkage between the steam curing
and the standard curing.
Work for pre-casting U-Tub girders and transoms for package II of the train, from Chouburgi to Ali Town, has gained momentum with the employment of Steam Curing
Technology, which has been introduced for the first time in Pakistan for pre-casting these structures.
reduces the compressive strength compared to the other curing types (Aldea et al., 2000).
With the help of steam curing
technology, an average of nine U-tub girders will be pre-cast daily from August 15 and four kilometers long track will be constructed after launching these girders by the September 15, the meeting was told.
Han, "Effects of steam curing
on strength and porous structure of concrete with low water/binder ratio," Construction and Building Materials, vol.
In prefabricated applications, its high compressive strength allows increased production speed and reduces costs by eliminating steam curing
. The global demand of white cement is currently much lower than that of grey cement and currently accounts for less than 1% of the current global cement consumption.
Environmental concerns of using and discharging large volumes of water, during installation and curing, caused the industry to shift gears and steam curing
became popular, Muenchmeyer continued.
"A one-day cycle for formwork was achieved using steam curing
and freeing up formwork sooner for the next pre-cast unit."
Two types of curing were applied, dry curing and steam curing
. For dry curing, the specimens were cured in an oven and for steam curing
the specimens were cured in the steam curing
PA products are said to provide superior processing qualities in extrusion, calendering and open steam curing