JPS6335902A - Laminated united sports soil ground - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to soil, particularly tennis courts, baseball fields,
This invention relates to a laminated integrated sports soil VT that is suitable for various sports grounds such as golf courses, promenades, and cycling courses, and can be implemented either in new construction or KJ repair.

(Background technology) Conventionally, compacted soil ground mixed with cement la is used for roads, parking lots, parks, etc.
A solidified soil base of 0cm/l- similar to the above was used as a sports soil base.

This sports soil ground had the advantages of retaining the feel of soil, being relatively durable, and being usable by removing water immediately after the rain. It left a problem. That is, although it retains the feel of soil, it cannot be denied that it feels too hard for sports soil because it is as hard as a road. In addition, moisture in the soil freezes in winter, causing the surface to collapse.
It will be unusable until it is repaired.

Furthermore, it takes time to solidify the soil, but as process 1 requires a short treatment time, it is necessary to finish the surface after complete solidification, and it is difficult to prevent the occurrence of uneven areas after solidification. ＜、Also;+Ii Does Osamu have the same equipment, time, and work?
This was a major bottleneck during the busy season for sports facilities.

(Object of the Invention) The present invention was made in view of the drawbacks of the conventional sports soil, and in particular, it has an appropriate hardness as a sports soil and can be used immediately after rain. The purpose of the present invention is to provide sports soil that has a good finish and is easy to maintain and manage.

(Structure of the Invention) In accordance with the purpose of the invention, as a result of intensive research, the present invention has been made to laminate the upper and lower two layers in one piece, and the lower layer is made of an assimilated ground equivalent to the conventional one, The upper layer is improved ground that has been improved to a semi-solidified state, and this upper layer improved ground is exposed ground. That is, the present invention is a lower layer solidified ground that has been mixed with cement and chloride and compacted to solidify the site soil. On top of this, a smooth upper layer of improved ground that has been improved to a semi-solidified on-site soil by rolling compaction with chloride, water, and a small amount of cementola mixed in as necessary is formed, and the upper layer of improved ground becomes exposed ground. It was completed with the gist of a laminated integrated sports soil featuring the following features:

The lower layer of solidified ground in the present invention uses cement and chloride, which are mixed together with water and compacted to solidify the soil at the site. That is.

Depending on the soil quality of the site soil, for example, cement 100~zoox9. It is formed by mixing 10 to 20 chlorides, such as calcium chloride, potassium chloride, sodium chloride, etc., singly or in combination with 10 to 20 chlorides, and pressing them together. At this time, the mixing ratio varies depending on the soil composition, construction thickness, etc., and the amount of water is determined depending on the soil moisture content.

The process includes, for example, excavating the soil to a thickness equivalent to the construction thickness, pulverizing it by stirring, separating and temporarily compacting the soil for the upper layer of improved ground,
By spreading and stirring cement, spraying and stirring chloride aqueous solution, soil compaction by compaction, watering, and curing.

In general, soil can be pulverized repeatedly using a stabilizer, cultivator, etc., but a considerable degree of pulverization should be achieved, and if any lumps of soil remain, cement, etc. should be uniformly mixed into this area. However, sufficient solidification is difficult to achieve. Cement is sprinkled on the soil prepared by pulverizing the cement in steps 10 to 20 to 9 above, and then stirring and mixing with a grader or the like.

The chloride is generally used in the form of an aqueous solution, and the concentration is preferably several percent or less. It is preferable that this spraying be carried out as uniformly as possible using a water truck, tire roller, etc. And the chloride is, for example, Cacl, -2H2O25~40
W%, Kc130-50W%, Nacl 15-40
Generally, a mixture of two or more materials such as W% is used, but other inorganic materials such as chlorides may also be added to this, and the optimal material for forming a solidified soil base can be used depending on the soil quality. The rolling compaction is performed using rollers that have an appropriate pressing force for compacting the soil. The subsequent sprinkling of water is carried out using a water sprinkler or the like within the above-mentioned time period after the pressure transfer, but if this watering is followed by compaction, it is possible to prevent the occurrence of cracks in the solidified soil ground. For curing, it is sufficient to leave it as it is by applying an external force, but the period of curing varies depending on the mixing ratio of cement, etc. - It takes about 20 hours or more for the inside of the membrane. Note that after this curing period, it is possible to further smooth the surface if necessary, but this is not particularly necessary since the lower assimilated ground is not exposed ground.

The thickness of the lower solidified ground formed in this way is not particularly limited, but it is approximately 30 to 90% of the construction thickness, for example, the construction thickness is 15%.
When C111 is used, about 5 to 13 C11 is desirable.

Directly and evenly place the separated soil on the lower solidified ground,
Temporary compaction is carried out, the same chloride aqueous solution as above is mixed in, and the soil is compacted by compaction, smoothed, and cured to form an upper layer of improved ground that improves the site soil to a semi-solidified state. These steps can be performed using similar mechanical force in accordance with the steps for the lower layer solidified ground.

The amount of chloride used in this upper layer of improved ground may be approximately 10 to 30 to 9 per 1 m of soil, and this point is the same as that of the lower layer of solidified ground, and the specific amount used depends on the soil quality and soil. , Construction 11 etc. At this time, depending on the soil quality, it may be desirable to apply 1 to 10 to 20 of 9 cement to the soil 1771', but this may be done as needed and is of course not indispensable.

This is because chloride itself has soil adhesion properties, and it is possible to semi-solidify the soil in the upper layer of improved ground without using the adhesion properties of cement.

After this spraying, stir if necessary and thoroughly soil I'c.
Let it mix. However, as explained below.

This improved ground may have a thickness of about 1 to 5 mm, so if it is uniformly spread, it can sufficiently penetrate and mix into the soil without stirring. Soil compaction by compaction is done using rollers, but if this compaction cannot make the improved ground smooth,
Furthermore, it may be necessary to carry out the entire smoothing process, such as pulling the long steel material with a vehicle, removing irregularities, and further performing rolling.

It is desirable to perform sufficient compaction. In other words, the same site soil is used for the lower assimilated ground and the upper smooth improved ground, and chloride is mixed into it, so when the upper improved ground is formed, the chloride reaches the lower assimilated ground. This is because by performing rolling pressure, it is possible to promote the integral fixation.

The improved ground in the upper layer does not need to be extremely thick.
The thickness may be approximately 5 cm, depending on the case, approximately IOIIm.

The improved ground in the upper layer formed in this way is exposed ground, and a spoke soil ground with integral lamination is obtained.

On the other hand, as another step in forming this laminated integrated sports soil ground, the upper layer improved ground is formed and solidified at the same time as the lower layer solidified ground, and then the thickness of the upper layer improved ground in this solidified ground is scraped off. With this scraped soil, it is possible to form the upper layer of improved ground through the same process as above. According to this process, it is relatively easy to obtain the desired improved ground, but this is because the unreacted cement remaining in the assimilated ground is dispersed in the scraped soil, and it is similar to using a small amount of cement. It is expected that this is because it has an adhesive effect.

Therefore, in this case, even when it is desirable to add a small amount of cement to the site soil itself, this addition is unnecessary and
Excellent improved ground can be obtained.

Example 1 A stabilizer was used to excavate and stir soil from the surface to a depth of 2o until it was pulverized, and -il soil was separated. Next, this was leveled with a bulldozer and temporarily compacted with a roller. Then, one cloth of Portland cement 200 paste was applied to this per inch of soil, and the mixture was stirred and mixed with a stabilizer.

On the other hand, calcium chloride (Cacl□・2H,0
) 40%, potassium chloride (Kcl) 30%, and sodium chloride (NaCl) 30%.
Using a tire roller, the soil, Portland cement, and chloride were mixed together using a stabilizer. Finish and compact the hoof with a roller.

History: After applying hiCC ice water, it was cured for 24 hours to form a 5-cm thick lower layer of solidified ground.

Thereafter, the separated soil was leveled with a bulldozer on this lower layer of solidified ground and compacted with rollers, and in the same manner as above, 40% of chloride, 30% of potassium chloride, and 30% of sulfur and lithium chloride were added. A chloride aqueous solution (concentration 2%) was uniformly impregnated onto the grass cloth using a tire roller, and this was thoroughly mixed with the soil, compacted using a roller, and finished by rolling to obtain a soil base for a tennis court.

Example 2 All soil without separating some soil? Solidified ground with a thickness of 20 crn as in Example 1? form,
After curing for 24 hours, the surface was scraped off by a thickness of 5 cIn by using a tire roller to pull an iron material, and the soil was leveled on the remaining solidified ground and treated with chloride in the same manner as in Example 1. A soil base for a tennis court was obtained by spraying, impregnating, mixing, compacting and finishing with an aqueous solution.

As a result, all of them have been improved to a semi-solid hardness that is suitable for tennis. 5 box jI sports ground and 15 below
Although the present invention has been exemplified and explained as above, it can be implemented in various ways as long as it does not go against the gist of the invention.

The specific formation method, process, necessity of cement on the upper layer improvement ground, construction thickness, etc. are not limited to the above.

(Effects of the Invention) In the present invention, a semi-solidified smooth upper layer improved ground is integrally layered on the lower layer solidified ground, and this improved ground is exposed, so that it has an appropriate hardness suitable for various sports. As a result, a sports ground with a soil feel can be obtained. Since the lower layer assimilated ground is strong, the upper layer improved ground is stable, and the improved ground can be repaired again as necessary due to ice and frost freezing in winter.
, I, □ Hey. One, 71 units of h&f, maintenance and management can be done dramatically easier and in a shorter time. In addition, since the lower layer of assimilated ground has difficulty absorbing water, even if water is absorbed into the upper layer of improved ground, it dries relatively quickly and can be resumed for use in a short period of time after the rain has stopped.

In addition, since the same soil quality is used for both the upper and lower layers, the laminated portions are easily integrated and are easily integrated.As described above, the present invention has extremely excellent effects as a sports ground.

Claims (1)

[Claims] Smooth upper layer improvement that improves the on-site soil to a semi-solidified state by mixing chloride, water, and a small amount of cement as necessary on the lower layer of solidified ground that has been mixed with cement and chloride and compacted to solidify the on-site soil. 1. A laminated integrated sports soil ground, characterized in that the ground is integrally laminated and the upper layer improved ground becomes exposed ground.