Site visit at SALILLARI Ltd.
On April 12, 2016 Future Engineers Club, supported by the Department of Civil Engineering at Epoka University, organized a site visit at one of the most specialized companies in Albania.
This activity consisted of a technical excursion related to an introduction of aggregates and their involvement to concrete production at Salillari Ltd. premises.
SALILLARI Ltd, was established as a construction company in 1994 Berat. Since then the company has extended its operation throughout the country from Shkodra to Saranda. The company was grown very fast during last years in reply to the demand of Albanian construction industry and now is one of the biggest companies in our country. The activity of company it is backed by qualified staff and a wide range of contemporary powerful machineries all owned. The attention of company it is focused also to human recourses management, staff qualification and safety.
The main construction activities of the companies are:
- Transport infrastructure works (highways, roads & bridges)
- Civil engineering works
- Site oil drilling construction, seaport and runway airport works
- Industrial & building works
- The production of construction materials (such as aggregates, concrete, asphalt, etc) through its own construction sites, quarries, concrete mixer and asphalt plants.
- Irrigation & environment protection projects
- Pipe and pipe water supply works
This organized program was mainly focused on the processes that were required for a final concrete production.
Firstly, it was explained the way of classifying the aggregates and the purpose of use for each type. Secondly, batching was described. This step is the process of measuring concrete mix ingredients by either mass or volume and introducing them into the mixer. The machinery should be capable of measuring the quantities within small tolerances in order to obtain concrete of uniform quality. Aggregates of three different sizes (sizes measured according to their respective diameters) were weighted and then added to the mixer by a transporter made of chains. After this ingredient, water and Portland cement were added and mixed for a certain period of time in the large deposits of mixing.
Cement was kept in big containers and was continuously filled by big vehicles. They were transporting it from the factories of cement production. By the time that mixing was completed, concrete was ready to be transferred to the construction site by the Concrete mixing transport trucks.
In addition, the participants were introduced with the controlling methods of all these processes by a specific program in the computer.
Finally, another visit in the laboratory of that company was organized. Different tests of concrete were held (i.e. compressing test of a cubic specimen of concrete) and the lab specialists took out some results, which were required to decide the exact class of that type of concrete for different purposes in construction.
This activity provided a lot of knowledge about aggregates and concrete production, which is a vital topic in civil engineering.
“Water is the most used material in the world. Then, concrete comes.”