JP2001342054A - Water pervious block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively reutilize a waste material. SOLUTION: An aggregate comprising (A) 10 to 90 wt.% crystallized stone material obtained by melting the ash content of a waste material at a temperature of 1,300 to 1,500 deg.C and crystallizing, and (B) 0 to 80 wt.% crushed waste ceramics, is mixed with 10 to 90 wt.% of sintered binder including 40 to 80 wt.% fine particulate of the crystallized stone material to make a composition of 100 wt.% as a whole. The composition is press molded and then fired at a temperature of 1,100 to 1,250 deg.C to obtain a water impervious block having 5 to 27 MPa of bending strength and less than 5% of water absorption rate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-impermeable block suitable for pavement such as road structures, parks and other open spaces, parking lots, and trenches of buildings.

[0002]

2. Description of the Related Art In recent years, in order to recycle waste,
It has been proposed to use a crushed material obtained by pulverizing molten slag, waste ceramics, waste glass, or the like, which is a residue of incinerated waste, as an aggregate or a sintered binder as an impermeable block.

[0003]

In the above-mentioned proposals, the range of materials reused as aggregates and sintered binders is narrow, and the efficiency of waste recycling is not very high.

[0004] In particular, molten slag, which is the residue of incineration of waste materials, is used by crushing amorphous materials, and heavy metals that may be contained therein are eluted to evaporate the environment. There is a risk of harm.

The present invention uses a crystallized fossil material obtained by crystallizing an amorphous molten slag as an aggregate or a sintered binder to prevent heavy metals from being eluted, and also to crush waste ceramics, crushed waste glass, The purpose of the present invention is to improve the efficiency of waste recycling by using tap water sediment as an aggregate and a sintered binder.

[0006]

Means for Solving the Problems The invention according to claim 1 of the present application is characterized in that "(A) melting ash of waste at 1300 to 1500 ° C.,
Crystallized fossil material (hereinafter simply referred to as “crystal fossil material”) 10 to 90% by weight, (B) ground ceramic waste material 0 to 80
The finely pulverized (C) fossil material is added to the aggregate consisting of
The sintered binder containing 40-80% by weight is mixed with 10-90% by weight,
After press-molding the composition with the whole as 100% by weight, it is baked at 1100-1250 ° C and has a bending strength of 5-27MPa.
, An impermeable block having a water absorption of 5% or less. The invention according to claim 2 is characterized in that “(A) pulverized waste glass 10
90% by weight, (B) Crushed waste ceramics 0-80% by weight
(C) 10 to 90% by weight of a sintered binder containing 40 to 80% by weight of the finely pulverized waste glass,
After press-molding the composition of 0% by weight,
Fired at 1150 ° C, bending strength 5 ~ 27MPa, water absorption 5
% Or less impermeable blocks. The invention according to claim 3 is characterized in that "(A) waste sand discharged from the bottom of a sand basin in the process of producing clean water (hereinafter simply referred to as" clean water sediment ")
90% by weight, (B) Aggregate consisting of 0-80% by weight of the waste ceramic pulverized material, (C) 10-90% by weight of a sintered binder mixed with 100% by weight, and press-pressed the composition. After molding, it is fired at 1100-1250 ° C and has a bending strength of 5-27MP.
a, an impermeable block having a water absorption of 5% or less. ".

[0007] The crystallized fossil material used as an aggregate in the invention according to the first aspect of the present invention is characterized in that the ash remaining after incineration of waste is reduced to 1300 or more.
Melted at 1500 ° C and crystallized. As the crystal fossil material, Japanese Patent No. 2775525, or
Crystallized glass or crystallized product produced by the method described in JP-A-26773 is preferably used.

[0008] The maximum grain size of this crystal fossil material is 1 to 5 m.
It is preferable to use those having a relatively small particle size distribution width, in which particles having a particle size of 0.5 to 4 mm occupy most of the particles and having a small particle size of less than 0.5 mm. This crystallized fossil material is also used as a component of a sintered binder.

The particle size and particle size distribution of those used as aggregates are as described above, and those used as sintered binders are finely pulverized so that the maximum particle size is about 0.1 to 0.2 mm or less. Powder.

The same applies to waste glass used as a constituent of the aggregate and the sintered binder in the invention according to the second aspect, and the aggregate has a maximum particle size of 1 to 5 mm and a small number of particles less than 0.5 mm. Those having a relatively narrow particle size distribution width are preferably used, and those used as the sintering binder are finely pulverized powders having a maximum particle size of about 0.1 to 0.2 mm or less.

According to the first and second aspects of the present invention, the sintered binder does not have sufficient shape-retaining properties during molding and sintering during sintering only with powder derived from waste, and the physical properties of a product block are not sufficient. Therefore, a normal sintered binder of clay or natural stone is used together with a waste-derived sintered binder, also serving as a molding aid.

[0012] The sedimentation of the tap water used as the aggregate in the invention according to claim 3 is deposited on the bottom of the sand basin during the process of purifying the water taken in the water intake or the water supply station to supply the water as the water supply. ,
It is sand that is discharged as waste, has a very narrow particle size distribution, and has a maximum particle size of about 1 mm and is a sand-rich aggregate with a particle size of less than 0.5 mm. The sintering binder used for firing the water sediment may not contain waste-derived powder, but it is naturally preferable to contain as much waste-derived powder as possible.

The molding of the block in the present invention is performed by pressure press molding. The pressurizing pressure of this press forming is about 10 to 30 MPa as in the usual case.

When coloring the water-impermeable block of the present invention, a pigment as a coloring agent is blended. When coloring or patterning the surface, glaze is applied as necessary.

[0015]

Embodiments of the present invention will be described below.

An embodiment of the invention according to claim 1 is summarized in Table 1. In each case of Examples 1 to 3, an impermeable block satisfying the target physical properties was obtained.

[0017]

[Table 1] Note 1: The sintering binder component was a fossil crystal and a clay, and spray granules were prepared in advance and blended.

Note 2: Flexural strength was determined according to JIS-A1106. Note 3: The water absorption was determined according to JIS-A5209.

An embodiment of the invention according to claim 2 is summarized in Table 2. In any of Examples 4 to 6, water-impermeable blocks satisfying the target physical properties were obtained.

[0020]

[Table 2] Note 1: In the sintered binder component, waste glass and clay,
The spray granules were adjusted in advance and blended.

An embodiment of the invention according to claim 3 is summarized in Table 3. In all cases of Examples 7 to 9, water-impermeable blocks satisfying the target physical properties were obtained.

[0022]

[Table 3] Note 1: The sintering binder component was a waste glass and a clay, and the spray granules were adjusted in advance and blended.

[0023]

According to the present invention, not only fossil materials but also waste glass, waste ceramics,
The sedimentation of tap water is not only reusable as an aggregate or a sintered binder for the impermeable block, but also the physical properties of the obtained block are equal to or higher than those of a normal impermeable block. Further, since the crystallized fossil material is used, a safe water-impermeable block free from heavy metal elution, which is a concern when using an amorphous stone material derived from waste, can be manufactured. In addition, the firing temperature can be reduced by about 50 ° C. or more than usual,
It is possible to reduce greenhouse gases by reducing the energy load during production and CO ₂ emissions.

Continuing from the front page (71) Applicant 399011852 Orion Trading Co., Ltd. 1-42-1 Nishigahara, Kita-ku, Tokyo (72) Inventor Takeo Kikuchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Kazuhiko Arai 2-191-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd.Technical Research Laboratory (72) Inventor Makoto Imo 2-9-1, Tobita-Shi, Tobita, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Tsuneo Fujiwara 1542-1 Nogami Yaotsu-cho, Kamo-gun, Gifu Prefecture Nakano Setec Co., Ltd. (72) Inventor Katsunori Nishida 2-17-15 Tsukuda, Chuo-ku, Tokyo Within Tsukishima Kikai Co., Ltd. (72) Inventor Hidetaka Takahashi 1-42-1 Nishigahara, Kita-ku, Tokyo F-term (reference) 4D004 AA16 AA18 AA19 AA43 BA02 CA04 CA14 CA15 CA29 CA30 CA32 CA50 CC11 DA03 DA06 DA09 DA10 DA20 4G030 AA67 GA27

Claims (4)

[Claims] 1. (A) 10 to 90% by weight of crystallized fossil material (hereinafter simply referred to as "crystallized fossil material") obtained by melting and crystallizing ash of waste at 1300 to 1500 ° C .; 10-90% by weight of sintered binder containing (C) 40-80% by weight of finely pulverized crystal fossil material in aggregate consisting of 0-80% by weight
After mixing and press-molding the entire composition to 100% by weight, the composition is fired at 1100 to 1250 ° C and has a bending strength of 5 to 5%.
Impermeable block with 27MPa and water absorption of 5% or less. 2. (A) 10 to 90% by weight of crushed waste glass;
(B) Aggregate consisting of 0 to 80% by weight of waste ceramics is mixed with 10 to 90% by weight of a sintered binder containing 40 to 80% by weight of (C) finely ground waste glass, and the whole is 100% by weight. % Of the composition which is press-formed and fired at 900 to 1150 ° C. and has a bending strength of 5 to 27 MPa and a water absorption of 5% or less. (A) Waste water discharged from the bottom of a sand basin during the process of producing clean water (hereinafter simply referred to as clean water sediment)
90% by weight, (B) Aggregate consisting of 0-80% by weight of the waste ceramic pulverized material, (C) 10-90% by weight of a sintered binder mixed with 100% by weight, and press-pressed the composition. After molding, it is fired at 1100-1250 ° C and has a bending strength of 5-27MP.
a, an impermeable block having a water absorption of 5% or less. 4. The fossil crystal material reduces the ash content of the waste from 1300 to 15
It is a crystallized glass containing at least one of an anorthite crystal and β-wollastonite crystal, which is melted at 00 ° C., cooled and crystallized by reheating a glassy material obtained. The impermeable block according to claim 1.