Which is the higher price of gravel or gravel? gravel
Gravel gives the first impression that it is relatively small and a little disorganized, while gravel often reminds people of water or rivers. If you conceptually distinguish the difference between gravel and gravel, they are better than the difference between gravel and pebble, because gravel is often with sharp edges and corners, mostly weathered and broken from mountain rocks, produced in the mountains; while gravel is a stone without edges and corners, a stone that has been washed and polished by waves for a long time, produced in rivers. There is no need to compare carefully, just need to see if the stone has edges and corners, you can distinguish which kind of stone it is.
Gravel is smooth and smooth without edges and corners, but it has been hit by water surfing for many years, and its hardness is not as good as that of gravel, which also determines that it is a stone with low strength in construction. In addition, gravel because of its smooth shape, when used in construction and cement matching, its adhesion with cement slurry is not as good as that of rough gravel, which also causes poor stability of construction. For example, in construction projects where there are high requirements for strength and load-bearing, gravel is required, and it is taboo to use gravel. Gravel has good hardness and strength, is relatively uniform, has very sharp edges and corners, and can also be tightly bonded with cement. It is much stronger than gravel. In some high-grade concrete, it is stipulated that only gravel can be used, not gravel. In fact, the difference between gravel and crushed stone is mainly due to the difference in the bonding force between them and cement in engineering.
Gravel is made of rocks exposed to the surface that have been weathered or transported by water for a long time to form natural granules with a particle size of 2 to 60mm without edges. Gravel: Gravel is a name in the classification of sediments. Often represented by the symbol G. Refers to rocks or mineral debris with an average particle size greater than 1 mm. According to the average particle size, gravel is divided into three types: boulders, coarse gravel and fine gravel: those with an average particle size of 1-10 mm are called fine gravel; those with 10-100 mm are called coarse gravel; those larger than 100 mm are called boulders. After the gravel is cemented into rock, it is called gravel or breccia. The function of gravel: Gravel can be used for paving, and fine gravel is also an important material for making concrete. Pebbles: In fact, pebbles are also a type of gravel. All rock or mineral particles with a particle size of 2mm are called gravel. Gravel comes in a variety of shapes, including rib-shaped, sub-rib-shaped, sub-round, and round. Pebbles with a particle size of 2mm are round gravel.
From the cause of formation: pebbles are water-initialized gravel is wind-blown water egg desert gravel. In terms of geotechnical classification, pebbles refer to particles with a circular and sub-circular shape, with a particle size greater than 20mm accounting for 50% of the total mass. Gravel refers to particles with a circular, sub-circular or angular shape and a particle size greater than 2mm accounting for 50% of the total mass. They are all naturally formed. According to the definition of the "Common Concrete Gravel or Pebble Quality Standards and Inspection Methods" JGJ53-92 standard, pebbles are formed by natural conditions and rock particles with a particle size greater than 5mm. And gravel is rock particles with a particle size greater than 5mm obtained by crushing and sieving natural rocks or pebbles.
