JPH0253562B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to the basic structure of sports stadiums using artificial turf, particularly golf course greens.

(Prior technology) Recently, among the artificial lawns in which pile yarns are planted on a base fabric that has corrosion resistance, the artificial lawns in which the pile yarns are coated with sand have attracted attention because they resemble natural lawns. Artificial turf is used in various competition facilities, but attempts to use artificial turf on golf course greens are attracting particular attention.

(Problems to be solved by the invention) Until now, when laying artificial turf, it has been either directly laid on a soil base, or on a base compacted using crushed stone, and asphalt mixture, concrete, or soil cement. They used this as a base to lay artificial turf on top.

However, when artificial turf is laid directly on top of the soil, there are drawbacks such as unevenness due to frost heaving during the winter and the formation of water puddles due to poor drainage.

In addition, when the base is made of asphalt composite material, concrete, etc., since the base is concrete or asphalt itself, there are drawbacks such as the hardness of the ball, which increases the rebound, and the ball rolling too much. It has been pointed out that it is a heavy burden and has a negative impact on the player's conditioning.

Therefore, the present inventors investigated the basic structure of an artificial lawn that can solve the above-mentioned drawbacks, and as a result, they arrived at the present invention.

(Means for Solving the Problems) That is, the present invention provides a buffer layer in which crushed stone is coated with asphalt, a mixture of the crushed stone, sand, and rubber chips is spread and hardened, and an artificial lawn is spread and laid on top of the buffer layer. This is the basic structure of an artificial lawn green that is characterized by:

The configuration of the present invention will be explained in detail below.

The crushed stone of the buffer layer 2, which is the basis of the artificial lawn 1 in the present invention, is 10 to 30 m/m, and the surface of the crushed stone is coated with asphalt in advance. The sand used is about 1 m/m, and the rubber chips used are about 5 m/m. This asphalt-coated crushed stone, sand, and rubber chips are mixed in a ratio of 3:3:4, spread out to a thickness of about 15 cm, and thoroughly compacted using a vibrating plate weighing about 80 to 100 kg.

There are many types of artificial lawns, but among them, one that is fixed only by its own weight without using adhesives.
So-called leave-in sand-filled artificial turf is suitable because it blends well with the substrate and is easy to work with.

(Effects of the Invention) As described above, the present invention has the following effects in comparison with the conventional artificial lawn laying method.

That is, in the case of the conventional method of laying directly on soil, there were disadvantages in the winter when frost heaving caused unevenness and water puddles due to poor drainage, but the present invention
A buffer layer made by compacting a mixture of crushed stone, sand, and rubber chips coated with asphalt plays a waterproof role, forming an impermeable layer, and can prevent frost heave by blocking capillary water from underground.

In addition, when using conventional asphalt composite materials, cement, etc. as a base, they are hard, so the ball bounces too high, rolls too much, and puts a heavy burden on the human body, including the legs and lower back, which has the disadvantage of negatively impacting health. Atsuta is a layer of asphalt coated with a mixture of crushed stone, sand, and rubber chips, and has cushioning properties that allow the ball to bounce and roll appropriately, making it extremely similar to natural turf, as well as being less harmful to the human body. It has the effect of reducing negative effects.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing the base structure of the present invention.
1 is an artificial lawn, and 2 is a buffer layer made of a mixture of crushed stone coated with asphalt, sand, and rubber chips.

Claims (1)

[Claims] 1. A basic structure for an artificial lawn green, which is characterized in that crushed stone is coated with asphalt in advance, and a mixture of the crushed stone, sand, and rubber chips is spread and hardened to form a buffer layer.