This document summarizes a student's site visit to a precast and prestressed concrete manufacturing facility. The objectives of the visit were to see how theoretical concrete knowledge applies practically, gain experience in materials science, and learn about new construction materials. During the visit, the student observed various production processes, equipment used, and curing methods. They asked questions about reinforcing precast concrete and insulating methods. In conclusion, the student determined that precast concrete is an efficient modern construction approach that saves time for large projects.

1. Concrete Technology Site Visit
Construction of Materials-CIEN 331
Civil & Infrastructure Engineering Dept.
Eng. Madiha Alammari - Dr. Hamad Assaf
Student Name: Batoul Hamza Alshamali
2013001217

2. Objectives:
 To understand how the theoretical knowledge applies in the real world.
 To gain experience in building materials science.
 To update our information about the new construction materials.
Site:
Name Concrete Technology-RAK
Type of Site Construction of precast & Prestressed Concrete Industry.
Location Al Hamra Island, Ras Al Khamiah City, UAE.
Site Engineer Walid
Reasonfor choosing this site The main reason for choosing this site for observing the process of
manufacturing the precast concrete and the Prestressed concrete. In addition, to see what we learned being
applied.
Data of visit 14 Dec. 2015

3. Observation & Questions:
Precast should be reinforced or not?
As we know, the concrete carries the compressive forces but not good in carrying the tensile forces.
There are two types of the precast concrete, the bearing and the nonbearing load. Depending on part of the
building if it carries a load or not. Reinforcing can be done using the fiber instead of the steel because it
deceases the size of the section and push the concrete to give indications when it is near the failure point.
The FRC has so many types but the strongest type is the glass and different materials are used depends on
the applicability.
Insolation depends on the K the thermal conductivity coefficient, the thickness of the insolation
depends on the K and the thickness of the section. Using the different types of the polystyrenes for the
insolation purposes.
Figure 4.1
Figure 4.1
Figure 5.1

4. the rough surface for better bonds with the ceramic that we will be placed.
Figure 5.1 A movable machine for moving the concrete sections and can carry heavy loads up to 50 tons.
In the industry, cooling down the concrete is very important using different methods. The concrete shouldn’t
exceed 34 C degrees otherwise; they will throw it away if it is beyond the temperatures.
Figure 7.1
Figure 7.1 is a table vibratorthat reducesthe airvoidsinthe freshconcrete.

5. Figure 8.1
In Figure 8.1 the green machine is called battery cell, used in pouring instead of tables. Usually the battery
cell is for mass production like walls. The disadvantage is that we can’t apply it for insulations and
insufficient with the columns because they contain the electrical connections and impediment.
Figure 9.1
Figure 9.1 is showing a method of curing and prevent the evaporation from the fresh concrete.
Figure 10.1
The holes filled with a special material to prevent the concrete from coming through it and it enhances the
bonds.

6. Figure 1.2
Figure 1.2 shows a hole core slaps that continuous casting in one bed. It’s length depending on the designer
but usually from 100m to 150m length and 120 cm width. The water between them is for curing.
Figure 2.2 Figure 3.2
In the figure 2.2, 3.2 the machine pours and cuts the concrete after 15 hours of curing.
Figure 4.2 Figure 5.2
The cubes are for testing the strength of the concrete. Curing can be done by pouring the water on it and
keep it wet.

7. Conclusion:
Precast concrete is a modern method of building that saves time and more sufficient when the project
is up to more than 50 apartments in the cost matters. It can be used if the building environment doesn’t fit
the concrete due to that we seek for a controlled environment.