Gravel
Main Information
Description
Shahre Beton gravel is a high-quality coarse aggregate with standard grading, used in concrete production, road construction, and substructure applications. Its clean and uniform particles help increase the strength, durability, and workability of concrete.
Product Technical Description
Gravel, or coarse aggregates, are natural or crushed particles, often rounded in texture and of medium size, most of which are composed of quartz. These aggregates are the result of weathering and erosion in riverbeds and shorelines, and play a vital structural role in road construction and substructures. The share of stone materials in concrete is about two to three quarters of the volume; usually 60 to 70 percent gravel and 30 to 40 percent sand. To use gravel in concrete, the following requirements for health and grading must be followed:
- Permissible weight loss in the sodium sulfate test is MAA's maximum of 12 percent, and in the magnesium sulfate test, a maximum of 18 percent.
- Control of harmful substances such as clay lumps, chert, coal/lignite, soluble chlorides, and sulfur compounds according to national standards (446, 4978, 4984, 1-19038).
- Full compliance with the specified grading categories for each nominal size.
Types of Gravel
- Crushed stone: Durable, versatile, and cost-effective for structures and roads.
- Fine dust gravel: Finely crushed powder; suitable on its own or in combination with coarser aggregates for layering and compaction.
- River gravel: Rounded particles with natural abrasion; suitable for more workable concretes.
- Almond/pea gravel: Uniform small particles; used in landscaping and special concretes.
Types of Sand
- Washed sand: A collection free from soil and useless fine particles; suitable for concrete casting and quality mortars.
- Wind-blown or natural sand: Contains softer particles; ideal for finishing and surface coverings.
- Crushed sand: Produced by crushing hard stone; has more roughness and creates better adhesion to cement.
- Double-washed sand: Thoroughly washed and clean; the best choice for high-strength and sensitive structures.
Difference between Gravel and Sand
The main difference between gravel and sand lies in their size and their role in making concrete. Gravel, as a coarser aggregate, is responsible for bearing loads, increasing the density of concrete, and reducing its shrinkage. In contrast, sand, which is made up of finer particles, is used to fill the spaces between coarse grains, improve mix workability, and increase the cohesion of the cement paste. The precise and principled combination of these two materials ensures that the concrete maintains high compressive strength and long-lasting durability, performing better against stresses and environmental changes.
Summary
Gravel and sand may seem simple, but functionally, they are the heart of any concrete structure. The right choice of type and combination makes the difference between a durable structure and a weak one. Shahre Beton, with its specialized approach in supplying and evaluating top-quality materials, is a reliable partner throughout all construction phases, focusing on quality and durability in project execution.
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Shahre Beton
- Shahre Beton Sales Office: Iran, Tehran, Shadabad Iron Market, Block 13, Unit 6
Introduction of Shahre Beton
Shahre Beton was established to meet the specialized needs of engineers, contractors, and professionals in the construction industry. Leveraging technical knowledge and practical experience, this group provides an extensive network of services in cement supply, ready-mix concrete, precast parts, and concrete additives. Shahre Beton’s main focus is on quality, fair pricing, and timely delivery—features that have made this brand one of the most reputable sources for building materials in the country.
Easy Consultation and Purchase
At Shahre Beton, the process of purchasing concrete materials is designed to be as simple as possible. Technical and sales consultants across the country are ready to assist you with product selection, technical specifications review, and price comparisons. Through the Shahre Beton communication portal, product details can be viewed and orders placed without concern for delays or quality discrepancies. Nationwide coverage and fast delivery are among the main advantages of this intelligent supply system.
Goals and Values
Shahre Beton has grown based on customer trust and satisfaction and, with a long-term perspective, works towards raising the standards of the national construction industry. The company’s goal is to create a secure platform for purchasing concrete materials and play an effective role in the economic boom and civil development of the country.
Shahre Beton’s Commitments
- Supplying quality products and services with fair and competitive prices
- Adhering to the principles of customer orientation, honesty, and maximum satisfaction
- Establishing stable and transparent relationships between clients, colleagues, and manufacturers
Final Word
The Shahre Beton team has created a reliable and satisfying experience for all its customers. The group is your trustworthy partner for construction projects—from consultation to material supply—and, with its professional approach, facilitates the progress of the country's construction industry.
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