about us

Abrar Shen Shar

Abrar Shen Shargh manufacturing company was established in 2002 as one of the leading gravel producers in Tehran province, Iran. It flourished and achieved a leap in performance in 2010 through major renovations in its conduction. By recruiting highly-talented experts and staff, plus having more than half a century of experience in utilizing production, washing, and meshing equipment acquired by reputed international corporations, it is capable of producing and providing high-quality, standard construction materials to customers.

Possessing state-of-the-art facilities, high-end laboratories, and a broad transportation grid to the farthest locations within the country, Abrar-Shen-Shargh’s whole production amounts to 4000 tons of construction materials and it is going to export up to 25000 tons worth of materials to the neighboring countries in the near future.

A list of several cooperation projects:

1. KUZU company, 8^th district of the newly established town, Pardis, comprising 11292 residential apartments.
2. The multistorey car park in Parnian Commercial Center.
3. Mahesan’s B2 and B3 Towers.
4. Darya project, located in Saadat-Abad, comprising 43364 square meters
5. Khaled Istanbuli Royal project, comprising 31121 square meters.
6. Zahedan residential project, comprising 832 apartments.
7. Tabas residential project, comprising 390 apartments for servicing the earthquake sufferers.
8. The Ring project of Kish Island.
9. Being established as the best manufacturing enterprise from 2013 to 2021.
10. Establishing Global standards within the company (ISO 9001-14001-18001).
11. Flamingo Hotel’s expansion project located in Kish Island.
12. Roma tower located in North-Kamranieh.
13. Afra tower located in Elahieh.
14. Miniator Tower in Elahieh.
15. Chenaran-Park tower.
16. Cooperation with the constructor of the Sadr multi-level highway.
17. Cooperation with the constructor of Tehran’s Metro.
18. Niavaran’s Ivan pillar tower.
19. Niavaran Residential tower.
20. Velenjak’s Khorshid residential building.

We have fulfilled many other successful residential projects not mentioned here. Furthermore, Abrar-Shen-Shargh Holding is progressively active in manufacturing residential towers alongside the Khazar’s coast:

1. Mina tower of SorkhRood, the 14-floor residential tower
2. Madar tower of SorkhRood, the 15-floor residential tower
3. Ghiasi tower of Gorgan, the 8-floor residential tower
4. Paradis tower of Babolsar, the 30-floor residential tower
5. Setayesh tower of SorkhRood, the 30-floor residential tower

Equipment and facilities Inventory

A list of elite facilities and equipment being used through the production, washing, and meshing process:

1. Hydrocan Stone crusher, UK.
2. Rock on Rock Stone crusher, Denmark.
3. Sond, Iran.
4. Evowash washing hydro-silicon equipment, CDE Ireland.
5. Tinker water filtration, Ireland.
6. Filter Pressing equipment, Thailand.
7. Hyundai Loader.
8. Hyundai Excavator.
9. Transportation vehicles (Scania, Volvo, Mercedes Benz).
10. In-situ mining laboratory.
11. Calibrated digital weighbridge.
12. 1 Mw electricity supply.
13. 105 Hectares of prolific mines.
14. 300 cubic-meter water supply.

Introduction of natural sand from Abrar Shen mine

Introduction:

It is always important to choose high-quality materials in order to make concrete with proper efficiency and quality. Concrete stone materials (sand) make up about 70-80% of the volume of concrete. Therefore, the proper selection of materials with optimal granularity can have a significant impact on the properties of fresh and hardened concrete, including the durability and stability of concrete, the percentage of cement paste, the density and porosity of concrete, the type and amount of additives and pozzolanic materials used, and the cost of concrete.

The characteristics of aggregates include the shape and texture, size, specific weight and reactivity along with the ratio of water to cement which determines the strength, durability and efficiency of concrete.

The shape and texture of the aggregates have more influence on the properties of fresh concrete.

Durability of concrete is defined as its ability to resist weathering, chemical attack and abrasion while maintaining its engineering properties. The most important factors of destruction in concrete structures are alkaline reactions of aggregates, sulfate attack, freezing and melting, etc.

One of the main factors in the production and construction of concrete is permeability (its ability to resist water and chemical agents). The contact of salts, chlorides, sea water and other aggressive factors can destroy and weaken concrete. Concrete must be impervious to aggressive agents and have adequate durability. It is possible to increase the durability of concrete by choosing the right materials and reducing the permeability of concrete.

Fine concrete aggregates (sand) must be free of organic impurities. Fine aggregates (sand) used in concrete that are exposed to humidity, very humid weather conditions, or in contact with moisture transferred from the ground, should not contain materials that lead to the expansion and destruction of concrete in contact with the alkaline particles of cement turn around.

While ensuring the strength and durability of concrete, its efficiency should always be taken into consideration.

By providing a continuous range of aggregates, it is possible to fill the empty spaces between the aggregates and reduce the need for cement paste and increase the workability of concrete and its durability.

Concrete aggregate materials are divided into two categories in terms of size:

1) Coarse-grained materials (sand): particles larger than 4.75 mm

2) fine-grained materials (sand): particles smaller than 4.75 mm

Concrete aggregates can also be divided into the following two categories in terms of appearance:

1. Broken materials:

These materials are often obtained from grinding coarser stones and have a rough and rough texture and sharp corners.

2. Corner round materials (natural):

These materials are the result of river runoff and have a softer texture.

Construction and production of concrete with small aggregates (sand) with broken granulation and with a minimum amount of filler often leads to problems such as reduced efficiency, poor pump ability, or high water loss of concrete.

Concrete granules include the following:

• Cement and other powder additives

• Aggregates between zero and 0.149 mm in concrete

Adequate and suitable sand filler (particles passing through the sieve No. 100) can act as a lubricant in fresh concrete and improve the characteristics of fresh and hardened concrete as follows.

1. Increase efficiency

2. Increasing the compressive and bending strength of concrete

3. Increase in density

4. Reducing cracks caused by concrete shrinkage (shrinkage)

5. Reducing the risk of separation of aggregates

6. Reduction of porosity and permeability

7. Increasing the durability of concrete

8. Reducing the amount of cement used and powder additives

Choosing sand with a lower softness factor (finer sand) and suitable filler percentage can have a significant impact on the properties of fresh and hardened concrete and the cost of concrete.

The effect of the shape of aggregates on the properties of fresh and hardened concrete:

The shape and surface texture of aggregates have an effect on the properties of fresh concrete and hardened concrete. In order to produce effective concrete with a certain resistance class, particles with broken texture need more water and correspondingly more cement than round and natural aggregates. or increase the consumption of super lubricants.

Irregular and broken grains cannot slide on each other or on other grains and only slide on them, which increases the internal friction and as a result reduces the efficiency and pump ability of concrete.

By increasing the sharpness and surface roughness of aggregates, especially fine aggregates, empty spaces, the amount of mixing water required to achieve a certain efficiency increases.

Replacing the broken sharp corner aggregates with round and natural corner aggregates often causes a major change in the properties of fresh concrete.

 The more rounded the aggregates are, the less their specific surface area and the less amount of water is needed to achieve efficiency, which leads to a decrease in the water-cement ratio (W/C) and an increase in concrete strength and a decrease in the consumption of concrete additives such as the above. Lubricants, air conditioners, thickeners, etc.

Introduction of natural sand from Abrar Shen mine:

1. Physical characteristics of sand:

Granulation diagram of materials based on the standard

Chemical characteristics of natural sand of Abrar Shen : 

Advantages of using natural sand of Abrar Shen Company with size 0-5 mm :

1. Providing continuous grading of concrete aggregates (sand)

2. Provision of suitable filler for concrete and no need to use air sand in the mixing plan

3. Increasing the fluidity and extraordinary efficiency of concrete and improving the pump ability due to the rounded corners of the particles

4 .Non-separation of concrete aggregates in the above slumps

5. Reducing the ratio of water to cement and increasing the strength of concrete

6. Increasing the rheology and reducing the adhesion of concrete

7. Increasing the specific weight of manufactured concrete and reducing its pores

8. Reducing the consumption of pozzolanic materials and cement substitutes

9. Reducing the consumption of concrete additives, including types of super-lubricants and super-water reducers, concrete thickeners (VMA) and …

10.Ability to be used in the production of special concretes including:

10.1. Self-Compacting Concrete

10.2. waterproof concrete

10.3. High Strength Concrete

10.4. Ultra strong concrete (UHPC)

10.5. Exposed concrete

11. Not needing to repair concrete

12. Reducing the cost of concrete

Concrete made with natural sand of Abrar Shan mine

1.Self-compacting concrete (SCC)

To implement in:

Concrete sections with complex shapes

 concrete sections with rebar density

Increasing the height of launch concrete up to 6 meters

2. Impermeable concrete (with a maximum penetration depth of 15 mm and a maximum water absorption of 3%)

To implement in:

Coastal structures

 Marine structures

subterraneous structures

 Tanks…

1.High strength concrete

 To implement in:

High-rise structures

Aid to optimize structural calculations

4.Concretes with pumpability and high efficiency

To implement in:

High-rise buildings

Concreting with long piping length

5. Concrete fillers for structures CFT

6.Exposed concrete

7.Prefabricated concrete parts

Examples of implemented projects with natural sand of Abrar Shan mine in 2023

1-Self-compacting concrete (SCC)

-Self-compacting concrete with a resistance of C70- Filling the CFT columns - Sepehr Saderat Elaheh Project- Paya Sazeh Pasargard Company with 1100 cubic meters.

-Self-compacting concrete with a resistance of C45-Raman Mansion Project, Shariati Street,Azaristan Construction Company with 1200 cubic meters

-Self-compacting concrete with a resistance of C45-Niavaran project Mr. Rostam Abadi engineer with 1600 cubic meters.

-Self-compacting concrete with a resistance of C45-Elahiya garden tower project , Mr.Engineer Qazi with 1500 cubic meters

-Self-compacting concrete with a resistance of C45-Zafaranieh residential  building project, engineer Kamali with 600 cubic meters

-Self-compacting concrete with a resistance of C40-Roje residential building of Kamranieh, engineer Golkar with 1200 cubic meters

2- Impermeable concrete (with a maximum penetration depth of 15 mm and maximum water absorption of 3%)

-Impermeable concrete with a resistance of C40- Raman Mansion Project, Shariati Street, Azaristan Construction Company with 1600 cubic meters

-Impermeable concrete with a resistance of C45- Elahiya garden tower project, Mr. Engineer Qazi with 1330 cubic meters

Impermeable concrete with a resistance of C35- Bukan Residential Building Project - Sorna Construction Company with 900 cubic meters

Impermeable concrete with a resistance of C25- Sepehr Saderat Elaheh Project- Paya Sazeh Pasargard Company with 1450 cubic meters

Impermeable concrete with a resistance of C40- Niavaran garden Tower Project, Mr.Engineer Karimi with 2000 cubic meters

Impermeable concrete with a resistance of C35 - Pasargard Bank office building project, Ivan Saze Poya Company with 1000 cubic meters

3- High strength concrete

-High strength concrete C50 - Zafaranieh Residential Building - Shahrasvand Engineer with 2000 cubic meters

-High strength concrete C70 - Sepehr Saderat Elaheh Project- Paya Sazeh Pasargard Company with 1100 cubic meters

4-Concretes with pumpability and high efficiency

-High performance concrete and pumping length more than 100 - Nasim Mahmoudieh project - Paya Sazeh Pasargard company with 3000 cubic meters

-High performance concrete and pumping length more than 100 - Zafaranieh Project - Falat Sanat Company with 1800 cubic meters

- High performance concrete and pumping length more than 100 - Pasdaran Twin Tower Project - Mr. Engineer Majid Hosseini with 3000 cubic meters

-High performance concrete and pumping length more than 100 - Kamraniye residential building project, Golkar engineer with 2800 cubic meters

5-Concrete fillers for structures CFT

Implementation of self-compacting concrete projects of CFT Iran