I visited the Crown Cement manufacturing plant along with my class fellows and faculty members in West Mukterpur, Munshiganj Bangladesh.
The top producer of grey cement and ready-mix concrete in Bangladesh is Crown Cement Limited. With the commitment to supplying the nation with top-notch cement and exporting it to other nations.
The hospitality staff at the manufacturing site gave us and the faculty a kind welcome. The technical team in their conference room gave a clear explanation regarding the business and the process of making cement. Following their remarks, the Factory Head and Technical Heads addressed us, which inspired the technical tour to begin. The supervisor explained the steps involved in making cement in great detail. We received some essential safety instructions and supplies, such as face masks and helmets.
In their lab, simple explanations of numerous tests on cement qualities, such as specific gravity, initial and final setting time, consistency limits, etc., were provided.
The procedure for grinding the clinkers and combining them with gypsum was demonstrated, since the Munshiganj facility at West Mukterpur is one of the integrated units in the cement-making process. Huge cylindrical silos that were employed for their capacity and storage were displayed and described. We were taken to their packaging department for the final part of the tour, where we witnessed in real time how cement from silos was loaded into standard packs, sealed, and transported to the storage yard via conveyor belts. Overall, learning about the inner workings of a manufacturing factory was a wonderful experience.
N.B.: We were warned not to take pictures of lab tests because of various restrictions.
Standard Penetration Test (SPT), test's purpose is to assess the soil's strata's resistance to penetration.
The test is very helpful for figuring out how dense cohesionless soils are compared to one another and what angle they can be sheared at without breaking. Cohesive soils' unconfined compressive strengths may also be calculated using this method.
It is measured how many hammer blows are necessary to drive a nail 150 mm deep. It is further forced by 150 mm, and the blows are recorded. Similar to before, the sampler is again driven farther by 150 mm, with the number of strikes recorded. The number of blows that were recorded during the first 150 mm was not taken into account. The standard penetration number is calculated by adding the number of blows noted for the two most recent 150 mm intervals (N). In other words, N is the number of blows necessary to penetrate 150 mm beyond the 150 mm seating drive.
Visits to building sites are engaging experiences that expand my knowledge of actual construction techniques. The exposure to a real-world spatio-temporal experience of a building project is provided through site visits, which also offer an interactive learning environment.
When I visit any building site, I perform the steps listed below:
For Column
I check the main reinforcement and the tie bars of columns, their spacing. And make sure the formwork supports are appropriately tightened. Check the concrete clear cover for reinforcement and the casting height of the column.
For Beam
I make an effort to make sure the reinforcement is of an appropriate grade. Verify the rebar's diameter, length, bending radius, and spacing, as well as the number of bars. Make certain that the laps are the appropriate length and that the rebar is covered properly. The installation of reinforcement prevents sagging or movement. I suggest utilizing chairs in this situation.
For Concrete Slab
While pouring concrete, I make an effort to ensure that the cover blocks are stable and in the proper place. If the concrete is made on-site, take special attention during batching, water content, mixing, and fresh concrete testing. Ascertain that vibrators are used to correctly condense the beams, which should primarily be cast in layers. As per your electrical layout design, verify all the concealed electrical conduit work, connections, and points, as well as the locations of fan points and MS boxes.