Archive for date: January 6th, 2024

Construction has made considerable advances in today’s globe. As humans grow, they find new and diversified requirements. In building construction, several instruments are required to improve strength and resistance; one of the most essential functions is associated with beam rebar.

It is essential to use steel rebar for your construction to be strong. It is worth noting that Concrete alone is ineffective for enhancing strength and must be combined with rebar. Otherwise, the usage of Concrete is avoided. Beam rebar and other steel pieces are utilized in Concrete (in various ways) to strengthen the construction.

The Apexrod staff has developed this article for you to gain thorough and accurate information about rebar. This article also attempts to introduce and study the wide varieties of ribbed, essential alloy bars (such as epoxy, VCN bars, mo40 bars, and so on) and their applications.

Rebar Types Classified by Its Look

Hot-rolled rebars for reinforcing Concrete are classified into two types, according to Iranian National Standard No. 3132: plain rebar and ribbed rebar. Simple and ribbed rebars are classified into four classes as follows:

A1 rebar or simple rebar
A2 rebar or rebar with spiral ribs
A3 rebar or ribbed rebar
A4 rebar or composite ribbed rebar

1- A1 rebar

The A1 rebar, often known as a simple rebar, has no treads or ridges across its surface. Simple rebars are typically made and sold in diameters ranging from 6 to 20 mm and are depicted in Iran’s national standard No. 3132 with the distinguishing sign S240. This type of rebar contains the least amount of carbon in its chemical makeup, resulting in exceptional flexibility, formability, and weldability. We recommend reading the specific page below to understand more about this type of rebar.

The cost of basic rebar
Because of the lack of tread and the differing manufacturing procedure, plain rebar is often less expensive than ribbed rebar of the same size. You should check the price list of this type of rebar regularly to learn about the daily price of simple rebar and its price variation. It is sufficient to refer to the following page and view the everyday price of simple rebar for all factories on the market.

2- A2 rebar

A2 rebars are ribbed rebars. This type of rebar has a spiral tread (uniform or spindle) that runs from the beginning to the end of the rebar and does not stop anywhere. A2 rebars have more excellent resistance than plain rebars, but they are less complicated than other ribbed rebars. Hence, it is sometimes referred to as a semi-hard rebar. A2 rebar is commonly used in shear walls and steel stirrup construction.

This rebar is classified as “Aaj 340” and “Aaj 350” in standard No. 3132.

3- A3 rebar

A3 rebar is a type of ribbed rebar with a cross-shaped tread. The mechanical properties of the rebar, such as its strength, malleability, and weldability, differ between A2 and A3 rebar. As a result of the increased amount of carbon in its chemical makeup, the A3 rebar has more resilience than the A2 rebar, but its formability and weldability are also poorer.

In Iran’s national standard, the A3 rebar is designated with the distinctive marks “Aaj 400” and “Aaj 420.”

4- A4 rebar

A4 rebar, which is known in standard 3132 with the distinguishing marks of tread 500 and tread 520, is in the final hardness category and is formed of high carbon grade steel. The form of the treads of this rebar is radically different from the ribbed rebars A2 and A3 and features spindle-shaped transverse treads.

Due to the progress in its production process, the A4 rebar, in addition to its incredible strength, has good flexibility and weldability, and the primary difference between the A3 and A4 rebars is connected to this.

Now that we are familiar with the types of all 4 rebar grades, we suggest that you read the following article to learn more about steel rebar details.

6 Different Types Of Steel Rebars

Types of steel bars can be categorized into 6 categories:

Carbon steel rebar
You can also buy carbon steel rebar under the name of black bar rebar. This type of rebar is in the category of the most mild sorts of rebar. These rebars do not have excellent resistance to moisture and rust; thus, their usage in humid conditions is not acceptable at all.

Epoxy rebar
Epoxy rebar is generated when carbon steel is coated with epoxy on the rebar. This operation raises the corrosion resistance by 70-1700 times. Note that the epoxy coating on these rebars is thin, and if it is scratched or broken, the rust property will be impaired.

Galvanized rebar
The next sort of rebars we want to study together are galvanized rebars. These rebars are just 40 times more robust than carbon steel. The element that makes these rebars one of the best is the excellent resilience of the galvanized coating against damage. This problem elevates galvanized rebar above epoxy rebar.

GFRP rebar
GFRP composite rebars are pretty close to carbon fibre, which is why you won’t have difficulties such as bending while utilizing us. GFRP rebar is particularly appropriate for reinforcing Concrete and has an excellent anti-rust performance. This product is relatively light in weight. Composite rebars are more expensive than epoxy rebars.

Stainless steel rebar
The next sort of rebar we’d like to discuss is stainless steel rebar. Because of its excellent quality, stainless steel rebar costs more than other varieties of rebar on the market. These rebars are 1500 times more potent than black rebars and are regarded as the optimum reinforcement for the structure’s Concrete. Another advantage of stainless steel rebar is that it can be readily bent while in use.

European rebar
European rebar is a type of rebar made from manganese alloy. European rebars are not advised for usage in earthquake-prone zones or sites with integrated constructions.

Ensuring Safety and strength in Concrete

Many factors must be addressed and taken into account while determining the role of beam rebar in Concrete. It is acceptable to claim that building Concrete without reinforcement and rebar is impossible since a person needs Safety in their environment to live happily. In addition to enhancing strength, the use of beam rebar in Concrete provides occupants beneath that building’s roof with a sense of comfort, calm, and Safety. You can visit the Apexrod website or call the numbers mentioned on the site to find out the price of various rebars, including the daily price.