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The Commonly Terms In The Sand And Gravel Industry

Posted: 2021-02-24

The sand and gravel industry has risen, but there are still many businesses that do not understand the professional terms of this industry. This article will introduce the commonly used terms in the sand and gravel industry in detail.

sand industry

1. High-Performance Concrete

Taking the specific requirements for concrete performance in construction engineering design and construction as the overall goal, select high-quality conventional raw materials, reasonably add admixtures and mineral admixtures, use a lower water-binder ratio and optimize the mix ratio, adopt green ready-mixed production methods, and strict The construction measures to make concrete with excellent mixture performance, mechanical properties, long-term performance, and durability.

2. Aggregate

Granular loose materials such as rock particles that act as skeletons, filling and stabilizing volume in concrete. According to the particle size, it can be divided into coarse aggregate and fine aggregate.

3. Natural Sand

Rock particles with a nominal diameter of less than 5.00mm formed by natural conditions. According to different sources of production, it can be divided into river sand, lake sand, sea sand, and mountain sand.

4. Artificial Sand

Rocks, pebbles, mine tailings, or industrial wastes are excavated, mechanically crushed, and sieved. Rock particles with a nominal diameter of less than 5.00mm.

5. Crushed Stone

Rock particles with a nominal particle size greater than 5.00mm, obtained by crushing and screening natural rocks or pebbles.

6. Gravel

Rock particles with a nominal diameter greater than 5.00mm formed by natural conditions.

7. Dust Content

The aggregate content of particles with a nominal particle size of less than 80μm, including clay, silt, and fines.

8. Clay Lump Content in Sand

The nominal particle size in the sand is greater than 1.25mm, and the content of particles less than 0.63mm after washing and hand kneading.

9. Crusher Dust Content

The artificial sand has a nominal particle size of less than 0.08mm, and its mineral composition has the same particle content as the processed parent rock.

10. Apparent Density

The mass of aggregate particles per unit volume (including internal closed pores).

11. Tight Density

Aggregate is the mass per unit volume after being solidified according to the prescribed method.

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