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

14 Dec. 2015

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

Reason for 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

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 5.1

Figure 4.1

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 vibrator that reduces the air voids in the fresh concrete.

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.

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.

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.