What is the sand size?

Sand stone are all non-renewable natural resources,and natural sand can not continuously excavate.Due to the limit of exploiting river sand, many people use limestone, granite, river pebbles to make sand all over china, so “artificial Sand "came into being,and develop very fast. Sand is broken by the mechanical crushing and screening, then made small particle size which is less than 4.75 mm.

Sand partical size

According to the magnitude of the particle size, materials is divided into coarse and fine sand. The different functions of particle sizes are used different sizes. The boundary dimension of the coarse and fine collected materials for cement concrete is 4.75 millimeters; While when it used in bituminous mixture, its boundary dimension is 2.36 millimeters. The particle size is larger than the boundary size are coarse sand, and the rest are fine sand. 

< 2.5 mm is called extra fine sand

2.5-3.5 mm called fine sand

3.5-5 mm called medium sand

>5 mm or more called coarse sand or coarse aggregate, namely stones.

Concrete is the main structural material of construction, widely used in highway, railway, construction, water and electricity projects. Besides sand and stone are the most important materials of making concrete materials, are a skeleton of concrete, so sand and stone known as the concrete "aggregate" with 0-4.75 mm particle size . The quality of sand and stone is directly related to the merits of concrete quality and the safety of engineering construction.

How to know the sand size? 

Using the diagrams below, estimate the general size categories of your sample.For example, you may observe a sample that has 50% size 6, 40% size 3, and 10% size 1.Any particles from 0.06mm to 2.0mm are considered to be sand. Particles larger than size 5 are considered gravel. 

Our company Baichy Machinery provided sand production line is widely used in limestone, granite, basalt, gneiss, river gravel, pebbles and other rock to make sand. Sand production line is designed with high degree of automation, high crushing ratio, low operating costs,energy-saving, and less pollution. The sand produced totally meet the national standard of construction sand with uniform particle size, good grain shape and reasonable grading. The main equipment of the production line is designed according to specifications of the sand, the capacity and the application of sand from customers.

People Also Frequently Asked Question- FAQ:

What is the size of natural sand?

Sand is a mixture of small grains of rock and granular materials which is mainly defined by size, being finer than gravel and coarser than silt. And ranging in size from 0.06 mm to 2 mm. Particles which are larger than 0.0078125 mm but smaller than 0.0625 mm are termed silt.

How is sand size measured?

It is usually measured as the effective size and the uniformity coefficient. The effective size of a given sample of sand is the particle size where 10% of the particles in that sample (by weight) are smaller, while 90% are larger.

How small is a piece of sand?

Sand is defined by geologists to be any rock which is less than 2 mm in diameter and greater than 1/16 mm diameter. In a very small sense, sand grains are both great and small.