JP5950544B2 - Roadbed material with glass foam - Google Patents
Roadbed material with glass foam Download PDFInfo
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- JP5950544B2 JP5950544B2 JP2011252593A JP2011252593A JP5950544B2 JP 5950544 B2 JP5950544 B2 JP 5950544B2 JP 2011252593 A JP2011252593 A JP 2011252593A JP 2011252593 A JP2011252593 A JP 2011252593A JP 5950544 B2 JP5950544 B2 JP 5950544B2
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- 239000000463 material Substances 0.000 title claims description 68
- 239000011521 glass Substances 0.000 title claims description 35
- 239000006260 foam Substances 0.000 title claims description 31
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000011398 Portland cement Substances 0.000 claims description 6
- 230000008439 repair process Effects 0.000 description 13
- 230000007774 longterm Effects 0.000 description 11
- 238000005187 foaming Methods 0.000 description 10
- 239000004568 cement Substances 0.000 description 7
- 239000004088 foaming agent Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- -1 alkali metal salts Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010922 glass waste Substances 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Description
この発明は、軌道工事に用いられる路盤材に関し、詳しくは、路盤材の長期強度を抑制して補修工事の容易化・短時間化を図る技術に関するものである。 The present invention relates to a roadbed material used for track work, and more particularly, to a technology for facilitating and shortening repair work by suppressing the long-term strength of the roadbed material.
近年、列車の高速化とダイヤの一層の過密化が進み、補修工事直後の列車運行によって繰り返し荷重が軌道下の路盤に掛かるため、軌道工事に用いられる路盤材には、初期強度の発現が良好なものが用いられるようになってきている（例えば、特許文献１）。 In recent years, the speed of trains and the congestion of diamonds have increased, and repeated loads are applied to the roadbed under the track due to the train operation immediately after the repair work. Therefore, the initial strength of the roadbed material used for the track work is good. (For example, Patent Document 1).
一般的に、軌道下の路盤材は、骨材と結合材とから構成されており、初期強度と長期強度を別々に制御することができず、初期強度が高くなるよう調合すると必然的に長期強度も非常に高くなってしまうものであった。そのため、特許文献１に記載されているような長期強度が高い路盤材では、軌道狂いの補修作業のため既存の路盤材を一部撤去する場合、通常のバックホーなどで割り砕くことができず、撤去するのに時間がかかり、列車の運行ダイヤに支障をきたすという問題があった。 In general, the roadbed material under the track is composed of aggregate and binder, and the initial strength and long-term strength cannot be controlled separately. The strength was very high. Therefore, in the roadbed material with high long-term strength as described in Patent Document 1, when removing a part of the existing roadbed material for repair work of the track error, it cannot be broken by a normal backhoe, There was a problem that it took time to remove and hindered the train schedule.
また、補修作業のし易さだけを考慮して初期強度の発現が遅い路盤材を用いると、所定時間（期間）経過後の必要強度が足りず、噴泥対策、鉄道継ぎ目部分の沈下対策、橋台背面などの高強度構造物隣接盛土の沈下対策、シートパイル、Ｈ鋼などの土留め材引き抜き後の地盤の弛み対策には使えなくなるという問題がある。 In addition, when using roadbed material with a slow initial strength, considering only the ease of repair work, the required strength is insufficient after a predetermined time (period) has elapsed. There is a problem that it cannot be used as a countermeasure for settlement of embankments adjacent to high-strength structures such as the back of abutments, and for ground loosening after pulling out retaining materials such as sheet piles and H steel.
一方、特許文献２には、透水性、保水性を備え、耐スリップ性が高く、耐久性にも優れた舗装面を形成するため、廃ガラスの粉末１０、フライアッシュセメント１１、骨材などをミキサ１２で混合した後、マグネシウム塩とポリエチレンイミンとの複合体からなる高分子化合物の希釈水溶液１４を添加、混練して得られた混練物１５を、路床１６上に打設して固化させた路盤材が開示されている（特許文献２の図１，図４等参照）。
On the other hand,
また、特許文献３には、コンクリート面における滑り止めを実現するため、ガラス粉末と発泡剤とを混ぜて焼成してなる多数の発泡材１を他の骨材と共にセメントと混合して打設し養生した後、カット又は研磨などの手法で発泡材１を露出させた発泡材入りコンクリートが開示されている（特許文献３の図２，図３等参照）。 Further, in Patent Document 3, in order to achieve slip prevention on the concrete surface, a large number of foamed materials 1 obtained by mixing and firing glass powder and a foaming agent are mixed with other aggregates and cemented. After curing, concrete containing foamed material in which the foamed material 1 is exposed by a technique such as cutting or polishing is disclosed (see FIGS. 2 and 3 in Patent Document 3).
しかし、特許文献２及び３のいずれの文献にも路盤材の長期強度を抑制して補修作業を容易かつ短時間でできるようにするという発想は開示されておらず、軌道工事に用いられる路盤材として前記課題を解決することができるものではなかった。
However, neither of
そこで、この発明は、前記従来の技術の問題を解決し、路盤材の必要強度を確保しつつ長期強度を抑制して補修工事の容易化・短時間化を図ることができる軌道工事用の路盤材を提供することを目的とする。 Accordingly, the present invention solves the above-mentioned problems of the prior art and suppresses the long-term strength while ensuring the required strength of the roadbed material, thereby facilitating and shortening the repair work. The purpose is to provide materials.
前記課題を解決するために、請求項１に記載の発明は、骨材と、骨材同士を結合する結合材とを備えた軌道工事に用いられる路盤材において、前記骨材としてガラス発泡体を含有し、このガラス発泡体は、一軸圧縮強度が２〜４Ｎ／ｍｍ ２ に設定されていることを特徴とする。
In order to solve the above-mentioned problem, the invention according to claim 1 is a roadbed material used in a track work including an aggregate and a binding material that couples the aggregates, and a glass foam is used as the aggregate. This glass foam is characterized in that the uniaxial compressive strength is set to 2 to 4 N / mm 2 .
請求項２に記載の発明は、請求項１に記載のガラス発泡体入り路盤材において、前記結合材は、早強ポルトランドセメントを主成分とする。
According to a second aspect of the present invention, in the roadbed material with glass foam according to the first aspect of the present invention, the binder is composed mainly of early-strength Portland cement.
この発明は、前記のようであって、請求項１に記載の発明によれば、骨材と、骨材同士を結合する結合材とを備えた軌道工事に用いられる路盤材において、前記骨材としてガラス発泡体を含有し、このガラス発泡体は、一軸圧縮強度が２〜４Ｎ／ｍｍ ２ に設定されているので、路盤材の必要強度を確保しつつ長期強度を抑制して補修工事の容易化・短時間化を図ることができる。しかも噴泥対策、鉄道継ぎ目部分の沈下対策などに使用する際に求められる必要強度１．２Ｎ／ｍｍ ２ 以上を確保することができるとともに、補修作業のため既存の路盤材を一部撤去する場合に都合のよい圧縮強度が５Ｎ／ｍｍ ２ 以下にすることができ、補修工事の容易化・短時間化を図ることができる。
This invention is as described above, and according to the invention described in claim 1, in the roadbed material used in the track work including the aggregate and the binding material for joining the aggregates, the aggregate As this glass foam has a uniaxial compressive strength of 2 to 4 N / mm 2 , it can be easily repaired by suppressing the long-term strength while ensuring the required strength of the roadbed material. And shortening the time. Moreover, it is possible to secure the required strength of 1.2 N / mm 2 or more required when using it for measures against mud and for subsidence of railway joints, and when removing some existing roadbed materials for repair work. The compressive strength that is convenient for the process can be reduced to 5 N / mm 2 or less, and the repair work can be facilitated and shortened.
請求項２に記載の発明によれば、請求項１に記載のガラス発泡体入り路盤材において、前記結合材は、早強ポルトランドセメントを主成分とするので、前記作用効果に加え、路盤材の必要強度を早期に発現させることができ、列車の運行ダイヤに支障をきたすおそれをより一層低減することができる。
According to the second aspect of the present invention, in the roadbed material with glass foam according to the first aspect, the binder is composed of early strong Portland cement as a main component. The required strength can be expressed at an early stage, and the risk of disturbing the train schedule can be further reduced.
この発明の一実施の形態を、図面を参照して説明する。 An embodiment of the present invention will be described with reference to the drawings.
本発明のガラス発泡体入り路盤材は、軌道工事において路床上に打設され、硬化後軌道を支持する路盤として用いられるものであり、主に、骨材と、骨材同士を結合する結合材と、水などから構成されている。 The roadbed material with glass foam of the present invention is used as a roadbed that is placed on the roadbed in track work and supports the track after curing, and mainly the aggregate and the binding material that bonds the aggregates together. And water.
背景技術で述べたように、特許文献１に記載されたような初期強度発現が良好な従来の路盤材は、図２に示すように、路盤材として必要とされる強度（１．２Ｎ／ｍｍ２程度）を早期に発現するように調合すると、水和反応は水分がある限り材齢（時間）とともに進行するため、路盤材の圧縮強度も徐々に増強していくこととなり、結果的に長期強度が必要以上に増大してしまう。 As described in the background art, the conventional roadbed material having good initial strength expression as described in Patent Document 1 has a strength (1.2 N / mm) required as a roadbed material as shown in FIG. As long as there is moisture, the hydration reaction proceeds with the age (time), so the compressive strength of the roadbed material will gradually increase. Strength will increase more than necessary.
そこで、本発明のガラス発泡体入り路盤材は、骨材として砂などの細骨材に加え、後述のガラス発泡体を混入させて、そのガラス発泡体が所定範囲の強度域で圧壊することで路盤材全体の長期強度を抑制して軌道工事における補修作用の容易化・短時間化を図るものである（図１参照）。 Therefore, the roadbed material with glass foam of the present invention is mixed with a fine aggregate such as sand as an aggregate, and a glass foam described later is mixed so that the glass foam is crushed in a predetermined range of strength. The long-term strength of the entire roadbed material is suppressed to facilitate and shorten the repair action in track construction (see Fig. 1).
（結合材）
結合材としては、一般的には、ポルトランドセメントが用いられるが、骨材を包み込んで硬化し、路盤材としての必要強度である１．２Ｎ／ｍｍ２程度以上を確保できるものであれば合成樹脂や石膏などの他の材料であっても構わない。
また、路盤材の配合や結合材の種類を替えることで路盤材の必要強度の発現時期（養生時間）を調整することができ、長期強度も発泡率を調整することで抑制することができる。次の表１に、実施例１〜３に係る路盤材の配合とその一軸圧縮強度との関係を示す。
(Binder)
Generally, Portland cement is used as the binding material, but any synthetic resin can be used as long as it can wrap and harden the aggregate to ensure a required strength of about 1.2 N / mm 2 or more as a roadbed material. Or other materials such as plaster.
Moreover, the expression time (curing time) of the required intensity | strength of a roadbed material can be adjusted by changing the mixing | blending of a roadbed material and the kind of binder, and long-term intensity | strength can also be suppressed by adjusting a foaming rate. Table 1 below shows the relationship between the composition of roadbed materials according to Examples 1 to 3 and the uniaxial compressive strength thereof.
（実施例１）
実施例１に係る路盤材は、含有するガラス発泡体の強度を２Ｎ／ｍｍ２程度で圧壊するように設定されているので、図１に示すように、路盤材全体の長期強度も２Ｎ／ｍｍ２程度とすることができる。このため、通常のバックホーなどで割り砕くことができ、路盤材の撤去作業（軌道工事の補修作業）を容易にすることができる。
Example 1
Since the roadbed material according to Example 1 is set so that the strength of the glass foam contained is collapsed at about 2 N / mm 2 , as shown in FIG. 1, the long-term strength of the entire roadbed material is also 2 N / mm. It can be about 2 . For this reason, it can be broken by a normal backhoe or the like, and the removal work of the roadbed material (repair work of the track work) can be facilitated.
（実施例２）
また、実施例２に係る路盤材は、セメントを早強セメントとして水セメント比を実施例１より低くすることで、結合材の強度を高めて必要強度（１．２Ｎ／ｍｍ２）の発現を早めている。このため、材齢が７日で早くも２．７１Ｎ／ｍｍ２の強度発現が認められる。
(Example 2)
In addition, the roadbed material according to Example 2 uses a cement as an early strong cement and has a water cement ratio lower than that of Example 1, thereby increasing the strength of the binder and developing the required strength (1.2 N / mm 2 ). It is early. For this reason, strength expression of 2.71 N / mm 2 is recognized as early as 7 days old.
（実施例３）
更に、実施例３に係る路盤材は、水セメント比を実施例１及び２より低くして強度を高く設定するとともに、急結材を添加することで、より一層結合材の強度発現を早めている。このため、数時間程度の養生期間で路盤材の必要強度を確保することができ、列車の運行再開を早期に行うことができる。また、含有するガラス発泡体は、４Ｎ／ｍｍ２程度で圧壊するように設定されているので、路盤材の長期強度も５Ｎ／ｍｍ２程度に抑制することができ、路盤材の撤去作業も容易に行なうことができる。
なお、急結材としては、アルミン酸塩、硫酸塩、炭酸塩及びケイ酸塩等のアルカリ金属塩、並びにカルシウムアルミネート等の既知の急結材を用いることができる。
Example 3
Furthermore, the roadbed material according to Example 3 has a water cement ratio lower than that in Examples 1 and 2 to set the strength higher, and by adding a quick setting material, the strength expression of the binding material is further accelerated. Yes. For this reason, the required strength of the roadbed material can be secured in a curing period of about several hours, and the train operation can be resumed early. Moreover, since the glass foam contained is set so as to be crushed at about 4 N / mm 2 , the long-term strength of the road base material can be suppressed to about 5 N / mm 2 , and the removal work of the road base material is easy. Can be done.
As the quick setting material, known quick setting materials such as alkali metal salts such as aluminate, sulfate, carbonate and silicate, and calcium aluminate can be used.
（ガラス発泡体）
実施例１〜３に用いたガラス発泡体は、０．２ｍｍ以下の粒径からなる廃ガラスの微粉末に、発泡剤を添加して８００〜１１００℃程度の温度で焼成することで発泡させている。この発泡剤は、廃ガラスの粉末を発泡させることができる物質であれば、特に種類は問わないが、好適には、炭酸カルシウム、ホウ砂、炭化珪素、硫黄、炭素、ドロマイト、硝酸ソーダ、及び硝酸カルシウムから選択される一種類の物質であり、廃ガラスの微粉末に対して重量％で０．１〜４．０％の範囲で添加される。添加量を０．１〜４．０％としたのは、０．１％未満だとガラスが発泡せず、４．０％超添加しても発泡率にあまり変化がないからである。
(Glass foam)
The glass foam used in Examples 1 to 3 is foamed by adding a foaming agent to a fine powder of waste glass having a particle size of 0.2 mm or less and firing at a temperature of about 800 to 1100 ° C. Yes. The foaming agent is not particularly limited as long as it is a substance capable of foaming waste glass powder, and preferably, calcium carbonate, borax, silicon carbide, sulfur, carbon, dolomite, sodium nitrate, and It is one kind of substance selected from calcium nitrate, and is added in the range of 0.1 to 4.0% by weight with respect to the fine powder of waste glass. The reason why the addition amount is set to 0.1 to 4.0% is that if it is less than 0.1%, the glass does not foam, and even if it exceeds 4.0%, the foaming rate does not change much.
また、実験により、ガラス発泡体の発泡率とガラス発泡体の一軸圧縮強度には、反比例の関係が認められ、発泡率が（発泡後の容積が発泡前の容積の）５．８倍のとき、一軸圧縮強度が２．９Ｎ／ｍｍ２、発泡率が７．１倍のとき、一軸圧縮強度が２．４Ｎ／ｍｍ２となることが確認された。 In addition, by experiment, an inversely proportional relationship is observed between the foam ratio of the glass foam and the uniaxial compressive strength of the glass foam, and the foam ratio is 5.8 times (the volume after foaming is the volume before foaming). When the uniaxial compressive strength was 2.9 N / mm 2 and the foaming rate was 7.1 times, it was confirmed that the uniaxial compressive strength was 2.4 N / mm 2 .
よって、ガラス発泡体の一軸圧縮強度を、路盤材の必要強度である１．２Ｎ／ｍｍ２以上で、補修作業のし易い５Ｎ／ｍｍ２以下とするには、ガラス発泡体の発泡率を８．２倍〜２．９倍とすればよい。
添加する発泡剤の種類により発泡剤のガラス廃材に対する添加量は異なるが、上記発泡率に着目すれば、即ち、発泡剤の添加量とガラス発泡体の発泡率との関係を実験により求めることにより、ガラス発泡体の一軸圧縮強度を所望の２〜４Ｎ／ｍｍ２の範囲にコントロールすることが可能である。
Therefore, in order to set the uniaxial compressive strength of the glass foam to 1.2 N / mm 2 or more, which is the required strength of the roadbed material, and to 5 N / mm 2 or less that is easy to repair, the foaming ratio of the glass foam is set to 8 .2 times to 2.9 times may be used.
The amount of foaming agent added to the glass waste material varies depending on the type of foaming agent to be added. However, by paying attention to the above foaming rate, that is, by determining the relationship between the amount of foaming agent added and the foaming rate of the glass foam by experiments. It is possible to control the uniaxial compressive strength of the glass foam within a desired range of 2 to 4 N / mm 2 .
以上のように、本発明の実施例に係る路盤材によれば、ガラス発泡体の発泡率を調整することにより、ガラス発泡体の一軸圧縮強度を所望の２〜４Ｎ／ｍｍ２とすることができ、路盤材全体でも、一軸圧縮強度を、必要強度の１．２Ｎ／ｍｍ２以上で、補修作業のし易い５Ｎ／ｍｍ２以下とすることができる。このため、路盤材の必要強度を確保しつつ長期強度を抑制して補修工事の容易化・短時間化を図ることができる。 As described above, according to the roadbed material according to the embodiment of the present invention, the uniaxial compressive strength of the glass foam can be set to a desired 2 to 4 N / mm 2 by adjusting the foaming rate of the glass foam. In the entire roadbed material, the uniaxial compressive strength can be reduced to 5N / mm 2 or less which is easy to perform repair with the required strength of 1.2 N / mm 2 or more. For this reason, long-term strength can be suppressed while ensuring the required strength of the roadbed material, and repair work can be facilitated and shortened.
また、結合材のセメントを早強ポルトランドセメントとしたり、急結材を添加したりすることにより、路盤材の必要強度を早期に発現させることができ、列車の運行ダイヤに支障をきたすおそれをより一層低減することができる。 Moreover, the required strength of the roadbed material can be expressed at an early stage by using early-bonding Portland cement as the cement for the binder, or by adding a quick-setting material, which may hinder train operation schedules. Further reduction can be achieved.
以上のように、本発明の実施例に係る路盤材を説明したが、骨材、結合材などは、既知のものを使用することができ、特許請求の範囲で適宜変更可能なのはいうまでもない。特に、骨材としては、砕石や割栗石などの粗骨材を含有してもよく、細骨材としても前記ガラス発泡体の他、山砂や海砂などの自然の砂だけでなく、人工の砂などを含有しても構わない。 As described above, the roadbed material according to the embodiment of the present invention has been described, but it is needless to say that an aggregate, a binding material, and the like can be used and can be appropriately changed within the scope of the claims. . In particular, the aggregate may contain coarse aggregates such as crushed stones and cracked stones, and the fine aggregates include not only natural sands such as mountain sand and sea sand but also artificial sands in addition to the glass foam. It may contain sand.
本発明の活用例としては、噴泥対策、鉄道継ぎ目部分の沈下対策、橋台背面などの高強度構造物隣接盛土の沈下対策、シートパイル、Ｈ鋼などの土留め材引き抜き後の地盤の弛み対策として、軌道工事用の路盤材として用いることが考えられる。 Examples of the use of the present invention are countermeasures for mud, countermeasures for settlement of railway joints, countermeasures for settlement of embankments adjacent to high-strength structures such as the back of abutments, countermeasures for soil loosening after pulling out earth retaining materials such as sheet piles and H steel. As such, it can be used as a roadbed material for track construction.
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| JP2015214459A (en) * | 2014-05-12 | 2015-12-03 | 東日本旅客鉄道株式会社 | Sub-base material including glass foam and production method thereof |
| CN107056149A (en) * | 2016-11-28 | 2017-08-18 | 嘉兴市产品质量检验检测院 | A kind of method of utilization foam glass waste-material-preparing foaming thermal-insulating |
| CN106592365A (en) * | 2016-12-30 | 2017-04-26 | 河南位登建筑工程有限公司 | Preparation method of road backing material |
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| JPS50119818A (en) * | 1974-03-07 | 1975-09-19 | ||
| JPH06279147A (en) * | 1993-03-29 | 1994-10-04 | Kanegafuchi Chem Ind Co Ltd | Lightweight concrete |
| JPH09295848A (en) * | 1996-04-26 | 1997-11-18 | Kazuya Satokawa | Highly fluid mortar composition |
| JP3738496B2 (en) * | 1996-10-15 | 2006-01-25 | 鹿島建設株式会社 | Artificial consolidation material |
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