V Channel (Rainwater Channel)

V Channel – Rainwater Channel

V Channel – Rainwater Channel

V Channel or Rain Water Channel is generally applied by being manufactured on-site from concrete in order to provide water drainage on the roadsides, but the model applied by bringing it to the assembly area in certain dimensions according to seasonal conditions is also highly preferred,</p > V Channel – Rainwater Channel[ /caption]It ensures road safety by minimizing negative factors such as rain water and snow, which may pose a risk by disrupting the flow of traffic. It is used to prevent rock fragments or landslides that may fall on the roads in mountainous regions from threatening road and life safety.

In some cases, in areas such as bridges, the U Channel is used as well as the v channel to minimize the negative impact of life under the bridge.

In short, V channels are applied to enable the evacuation of rain water in the desired direction, and the nearby culvert allows all water to be transported to the area such as a stream.

Concrete production

Cement and aggregate required for concrete are prepared in separate branches of industry. The last step is to prepare the mixture and use the concrete. Selection of appropriate mixing ratios; It ensures that properties such as economy, machinability, strength, durability and appearance are obtained in a balanced way. These vary depending on where they are used. Many mixing ratio calculation methods have been proposed according to the condition of the aggregate and the type of cement.

The ratio of mixing water to cement amount is the most important factor affecting the strength of concrete. Another important factor is the amount of air in the concrete. This amount is around 0.3-3% in normal concrete. These two effects constitute the two most important factors in the control of concrete quality. It is also important in obtaining a homogeneous concrete mixture. Mixing work is carried out with concrete mixers at the construction site.

In some special cases, mixing can also be done with shovels. In general, the cement that makes up the mix is measured by the bag, the aggregate by weight (or in some cases the apparent volume), and the water by volume. There are also central organizations that prepare the mix (or sell ready mixed concrete). In return for the request to be made here, a ready-to-use mixture of the desired quality is delivered to the construction site. Mixing can be done in stationary mixers as well as in mobile mixers.

The benefit of this kind of central concrete batching plants is the controlled mixing. Good quality concrete can easily be obtained when suitable sand and gravel are available. After obtaining the mixture homogeneously, the work done is to place it. If the prepared mixture is not close to the casting site, it must be conveyed to this place. This process can also be performed using a trolley and bucket or a pump.

Air bubbles in the mixture placed in the mold can be removed by using a vibrator and the concrete can be set well. In small jobs, bottling can also be applied. Vibration is achieved by rotating an eccentric mass about an axis.

This vibration, called vibration, can be achieved in concrete as well as by vibration of the mold. The last step in obtaining concrete is the maintenance and hardening of the poured concrete. The hardening occurs as a result of the hydration of Portland cement and its chemical reaction with water. It is important to maintain humid conditions for a certain period of time in the first days.

For this, the outer surface of the concrete can be wetted with water or damp covers can be used. Depending on the cement type and temperature, a long maintenance period may be required to achieve full hydration. In most cases, seven days is sufficient. It is generally assumed that concrete hardens as a result of evaporation of water. In reality this is not true. Without water, neither hydration nor hardening can occur.

Water is lost as a result of the hydration of the cement and only excess water can be allowed to evaporate. Chemical reactions in the circuits of concrete are quite complex. Additives produced due to the problems occurring in the concrete produced are now used. These additives both increase the strength of the concrete and protect it from water damage, and allow the admixture to be fluid or solid according to its consistency.

Concrete Types

The standard compressive strength of concrete is defined as the strength of cylindrical samples with a diameter of 150 mm and a length of 300 mm under axial pressure, cured at 20(+/-2)°C for 28 days, in a 100% humid environment and in calcareous water.

p>Strength expressed in terms of stress is obtained by dividing the breaking load by the area of the cylinder. Concrete classes are denoted by the initial letter “C” of the word concrete = concrete. For example, C20/25 is concrete with a 28-day characteristic cylinder compressive strength of 25 MPa, that is, 250 kgf/cm².

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V Kanalı – Yağmur Suyu Kanalı

V Kanalı – Yağmur Suyu Kanalı

V Kanalı – Yağmur Suyu Kanalı

V Kanalı – Yağmur Suyu Kanalı

V Kanalı – Yağmur Suyu Kanalı

V Kanalı – Yağmur Suyu Kanalı