JPH0326722B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an earth-based paving material, and particularly to an earth-based paving material whose base materials are clayey soil and tuffaceous stone powder. [Prior Art] Recently, not only urban roads but also playgrounds and the like have been paved with asphalt or cement concrete, and contact between people and soil has been eliminated. When building sidewalks, plazas, etc. using clay soil such as Kanto loam, it provides a comfortable walking feeling due to its elasticity and cushioning properties, as well as a sense of unity with the earth, but on the other hand, it inevitably lacks durability. . In other words, earthen spaces are constantly subject to the harsh effects of nature; for example, when it rains, they absorb water and become soft, and when they dry out, water evaporates, causing cracks and dust. In addition, its use is severely restricted in winter due to frost damage. For this reason, generally, Arakida is added to the soil and mixed, and bittern or potassium chloride is sprinkled on the soil, but it is quickly washed away by rainwater. [Problems to be solved by the invention] As mentioned above, as the number of earthen sidewalks, playgrounds, etc. is decreasing, soil is being reconsidered, and it is becoming more and more important to preserve the natural environment and manage human health. From this perspective, there is a trend toward adding more promenades and making playgrounds more natural. However, there were problems with the soil, such as the soil getting muddy when it rained, and dust forming when it dried, and even when conventional soil conditioners were added, they were not as effective due to the moisture in the soil. [Means for Solving the Problems] The present invention solves the above problems and utilizes the characteristics of natural soil to create a soil system that does not become muddy with water, does not generate dust even when dry, and can withstand the weight of humans. It was developed for the purpose of providing paving materials, and specifically: (1) tuffaceous stone powder per cubic meter of clayey soil;
The base material obtained by adding and stirring at a ratio of 0.2 to 1.5 cubic meters, 100 to 250 kg of cement per 1 cubic meter of this base material, and the solid weight of rubber latex per 100 kg of cement.
The purpose is to knead and integrate 15 to 30 kg of additives and mix them into an earth-based paving material. (2) The soil-based paving material according to claim 1, wherein the clayey soil is Kanto loam, the tuffaceous stone powder is Oya stone cutting powder, and the cement is ordinary Portland cement. Configured. [Function] According to the present invention having the above configuration, first, since the base material is a mixture of clayey soil such as Kanto loam and tuffaceous stone powder such as Oya stone, it is improved to a sandy loam. Cement and rubber latex are added to this base material, and the cement binds the soil particles and stone powder of the base material, prevents them from flowing and scattering, and provides water permeability. Rubber latex hardens and bonds adjacent particles to form coarse particles, so it is difficult to flow even with heavy rainwater and is effective in preventing cracks due to dryness. [Example] Examples of the present invention will be described in detail. First, as a first example, 0.5 m ³ of clay soil (Kanto loam) was taken out by excavating the road surface for sewerage construction in Nerima Ward, Tokyo.
On the other hand, Oya stone powder (tuff stone powder), which was discarded during the quarrying of Oya stone at the Oya stone quarry in Oya-cho, Utsunomiya City, Tochigi Prefecture, was crushed to a particle size of 0.01 to 1.5 mm.
m ³ was thoroughly stirred and mixed using a mixer to prepare a base material of 1 cubic meter. Separately, 200 kg of ordinary Portland cement and 40 kg of rubber latex (polychloroprene rubber) are mixed in a mixer to make 240 kg of additives, and this additive is added to the base material and thoroughly stirred and mixed with a mixer to produce an earth-based paving material. Manufactured. The composition characteristics of the base material are shown in Table-1.

【table】

【table】

Claims (1)

[Claims] 1. Tuff stone powder per cubic meter of clayey soil.
A base material obtained by adding and stirring a ratio of 0.2 to 1.5 cubic meters, 100 to 250 kg of cement per 1 cubic meter of this base material, and this cement.
Rubber latex solids weight 15~100Kg
An earth-based paving material characterized by being made by kneading and integrating 30 kg of additives. 2. The earth-based paving material according to claim 1, wherein the clayey soil is Kanto loam, the tuffaceous stone powder is Oya stone chips, and the cement is ordinary Portland cement.