JPS6033907A - Paving method - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paving method using soil for forming various outdoor sports facilities, promenades, etc.

Paving methods for facilities used for human exercise and traffic, such as tennis courts and promenades, include all-weather methods that cover the ground with concrete, asphalt, synthetic resin, etc., and limestone,
Typical examples include the crushing method, which covers crushed powder such as red brick, and the clay method, which covers loam made of silt, clay, etc.

The all-weather type is not susceptible to damage from rain or frost, and requires less maintenance, so it has come to be used in various outdoor competition facilities instead of the clay type. Several problems have been pointed out, including that it may have an adverse effect on the human body, lacks a natural feel, and lacks water permeability, requiring drainage work when used immediately after rain.

In contrast, those that use earth-based materials, such as the crushing method and clay method, are relatively soft and have favorable properties for exercise medicine, but have poor weather resistance and strength, and are too dry. There are maintenance difficulties, such as the need for moderate watering as the water turns into dust. However, because it is attractive because it provides a natural appearance and feel, it is currently used while acknowledging problems such as maintenance and management.

The present invention has been made in view of the current situation, and aims to provide a prefabricated pavement that has excellent weather resistance, durability, and is easy to maintain while retaining the favorable properties unique to the clay type. purpose.

For this reason, in the present invention, 1 to 105 t (
0.02 to 3% of sodium silicate (volume ratio, same below)
A flocculant is added, and the ground is leveled and compacted to form a paved soil surface.

As the flocculant, agents that exhibit adhesiveness, such as polymer flocculants such as polyacrylamide or higher amines such as triethanolamine, can be used alone or in combination. When used alone, the blending ratio is 0.02 to 0.3% for the polymer flocculant and 0.5 to 3.0% for the amine.
% is appropriate.

Specifically, for example, an area of 50n? , when paving with a thickness of 0.02m, the volume of soil material is 50m'XO,02f
Since i = 1-, as additives, 100 tons of a 30% aqueous solution of 3% sodium silicate and 200 tons of a 30% aqueous solution of 0.1% polyacrylamide were prepared. Mix this with the ingredients and use a mixer to mix and stir thoroughly.

The addition of each chemical to the soil material is carried out as appropriate depending on the condition of the paved land.

For example, when forming a new pavement, the soil material and the above-mentioned additives are mixed and stirred in advance as described above, and this fluid mixture is laid on the pavement foundation and then leveled and rolled. and finish it. On the other hand, if there is an existing earthen floor covering such as a tennis court or schoolyard, all of it is excavated with a tractor, etc., the soil is crushed, and an aqueous solution of additives is sprayed, and then the land is leveled and compacted. Just give it.

The earthen floor surface formed in this way is
Particles such as clay and fine sand are coated with additives, and by further compaction, the soil particles are ground together and adhesively bonded together, making them difficult to dissolve in water and resisting movement. It exhibits extremely high durability as it hardly breaks down and turns into dust even when subjected to impact.

In addition, water permeability is maintained because gaps remain between the soil particles, just like in conventional earthen floor coverings, and therefore, depending on the amount of rainfall, rainwater is quickly absorbed into the underground layer after it rains. As mentioned above, it is highly water resistant (does not become muddy), so it can be used immediately, and since it does not retain moisture, it is less susceptible to freezing damage in the winter.

Furthermore, it looks just like earthen floor coverings and maintains the appropriate elasticity characteristic of earth, so it feels perfect when used.

As described above, according to the present invention, it is possible to easily obtain a paved surface that has favorable properties specific to earthen floor coverings, is excellent in durability and water resistance, and therefore requires no maintenance.

Patent applicant: Hisao Osawa

Claims (1)

[Scope of Claims] 1. A paving method characterized by adding 1 to 10% by volume of sodium silicate and 0.02 to 3% by volume of a flocculant to a paving soil material, and then leveling and compacting the mixture. 2. Sodium silicate and a flocculant are added to the paving soil material in advance, mixed and stirred, and after this fluid mixture is laid on the paving foundation, it is leveled and compacted. Paving method described in Section. 3. The pavement according to claim 1, characterized in that the existing pavement soil surface is excavated and crushed, and then a sodium silicate aqueous solution and a flocculant aqueous solution are sprayed, and then the ground is leveled and compacted. Method.