The material specifications of baseball fields should be the same as those of road construction materials, and natural lawn materials should be in accordance with garden planting requirements.
1. Earthy site materials
1
Sintered soil: a synthetic material
Color:
Orange red (required not to fade when exposed to water and fade after three years of exposure to ultraviolet light); plasticity index 9~12; liquid limit 30~35; maximum dry bulk weight 1.6~1.7; maximum particle size 5mm; admixture lt; 0.1.
II
Naturally graded gravel: dry river bed is used, the largest particle is required to be below 5cm, the content of particles below 5mm is not greater than 30 (volume ratio), and the mud content is not greater than the mass of sand 10 refers to the quality of sand with a particle size less than 5mm.
2. Natural lawn materials
Soil quality: sandy soil with particle gradation is required, with good water permeability and good air permeability. The surface can penetrate in time after rain and will not The formation of water flow requires the grass bed to be stable and suitable for the growth of grass seedlings.
3. Artificial turf field materials
The grass seedlings of artificial turf grow more than 4cm.
4. Artificial turf base layer
1
Cement concrete, the grade should not be less than C20.
Two
Cement: Ordinary cement with a grade of 325 or above or slag cement with a grade of 325 or above.
Three
Aggregate: gravel or crushed river gravel with a particle size of 0.5~3.2cm, mud content ≤1.
Four
Sand: Coarse sand, the largest particle is 5mm, and the mud content is less than 3.
五
Asphalt concrete can use AC-10 or AM-10 as the surface layer, and the bottom layer of asphalt concrete can use AC-16, AC-20 or AM-16, AM- 20.
Six
The material mix ratio of lime and fly ash gravel: lime: fly ash: gravel = 7:30:63 or 10:50:40.
7. Lime soil base material
1
Lime: Use grade 1 to 3 new ash. The amount of ash used is 12.
II
Soil: soil with cohesiveness (plasticity index greater than 4), sandy soil, silt soil, etc. The amount of soil used is 88.
8. The soil used in the baseball field has very high requirements. The color is orange-red. There must be no fading or fading after being wet or in a dry state. When the athletes' bodies are in contact with the soil, no orange stains are allowed on the clothing or any part of the body. Red, and dirt should come off easily and should not stick to the body or clothing. It has strong water permeability and can be played immediately after artificial watering without sticking to the feet.
6) The product has a shelf life of seven years, and the formula is a patented product.