JP2003286054A - Glass aggregate and its manufacturing method - Google Patents
Glass aggregate and its manufacturing methodInfo
- Publication number
- JP2003286054A JP2003286054A JP2002093416A JP2002093416A JP2003286054A JP 2003286054 A JP2003286054 A JP 2003286054A JP 2002093416 A JP2002093416 A JP 2002093416A JP 2002093416 A JP2002093416 A JP 2002093416A JP 2003286054 A JP2003286054 A JP 2003286054A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- alkali
- aggregate
- hydrogen chloride
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 46
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 239000006063 cullet Substances 0.000 claims abstract description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 18
- 239000004570 mortar (masonry) Substances 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 abstract description 3
- 230000001459 mortal effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000011734 sodium Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 239000002245 particle Substances 0.000 description 13
- 239000000377 silicon dioxide Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000010922 glass waste Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する利用分野】本発明は、モルタル又はコン
クリートに使用される骨材に関するものであり、さらに
詳しくは、アルカリシリカ反応によるモルタル又はコン
クリートの特性劣化のないガラス骨材及びその製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregate used for mortar or concrete, and more particularly to a glass aggregate which does not deteriorate the characteristics of mortar or concrete due to an alkali silica reaction and a method for producing the same. Is.
【０００２】[0002]
【従来の技術】廃ガラスのリサイクルは、種々の分野に
おいて積極的に推進されている。しかし、その発生量に
見合う大量利用技術はいまだ確立されていない。また、
着色ガラスや医療廃棄物として発生する廃ガラスなど
は、ガラスを構成する成分上の問題や安全性の問題か
ら、リサイクルの目処はほとんど立っていないのが現状
である。Recycling of waste glass is actively promoted in various fields. However, the mass-use technology corresponding to the amount generated has not been established yet. Also,
Currently, colored glass and waste glass generated as medical waste have little prospect for recycling due to problems in the constituent components of glass and safety.
【０００３】ところで、一般に流通するガラスの多く
は、ソーダガラスと呼ばれるもので、その名が示すとお
り、アルカリ含有量は、Ｎａ2ＯとＫ2Ｏの合量で１０〜
１５重量％と高いものである。廃ガラスのリサイクルを
考える場合、このアルカリ含有量が障害となるケースが
多い。例えば、大量の需要が見込めるモルタル用又はコ
ンクリート用の骨材として使用した場合、アルカリシリ
カ反応によって異常膨張を起こし、モルタル又はコンク
リートの著しい強度低下を起こす危険性が高い。このた
め、廃ガラスカレットをそのまま骨材として利用するこ
とは困難である。By the way, most of the glass that is generally distributed is called soda glass, and as the name implies, the alkali content is 10 to 10 in total of Na 2 O and K 2 O.
It is as high as 15% by weight. When considering the recycling of waste glass, this alkali content often becomes an obstacle. For example, when it is used as an aggregate for mortar or concrete for which a large amount of demand can be expected, there is a high risk that abnormal expansion will occur due to the alkali-silica reaction and the mortar or concrete will be significantly reduced in strength. Therefore, it is difficult to use the waste glass cullet as it is as an aggregate.
【０００４】[0004]
【発明が解決しようとする課題】したがって、本発明の
目的は、廃ガラスの大量利用技術の確立を目指し、モル
タル又はコンクリートに無害であるガラス骨材及びその
製造方法を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a glass aggregate which is harmless to mortar or concrete and a method for producing the same, aiming at establishment of a technique for mass-utilizing waste glass.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、モルタル
又はコンクリートに無害であるガラス骨材として廃ガラ
スを有効に利用することを可能とする技術について鋭意
検討を重ねた。その結果、ガラス表層部のアルカリ含有
量をある一定値以下にすること、ならびに、ガラス表層
部におけるアルカリの除去は、ガラスと塩化水素ガスと
を反応させることで、ガラス表面にＮａＣｌおよびＫＣ
ｌを生成せしめ、この生成塩を水洗除去することが極め
て有効であることを見出し、本発明を完成するに至っ
た。DISCLOSURE OF THE INVENTION The inventors of the present invention have made extensive studies on a technique that enables effective utilization of waste glass as a glass aggregate that is harmless to mortar or concrete. As a result, the alkali content in the glass surface layer portion is set to a certain value or less, and the alkali in the glass surface layer portion is removed by reacting the glass with hydrogen chloride gas, thereby causing NaCl and KC on the glass surface.
It was found that it is extremely effective to produce 1 and wash off the produced salt with water, and completed the present invention.
【０００６】すなわち、上記目的を達成するために、本
発明は、表面から深度３μｍまでのＮａ2ＯとＫ2Ｏを合
計した含有量が５重量％以下であり、骨材として適合す
る形状に整形したアルカリ含有ガラスに由来することを
特徴とする。本明細書中、「アルカリ」の語を成分を示
す語として用いる場合には、一般的には、Ｎａ2Ｏもし
くはＫ2Ｏ又はその両方を意味している。また、「表面
から深度３μｍまでのＮａ2ＯとＫ2Ｏを合計した含有量
が５重量％以下」とは、アルカリ含有ガラスカレット又
は骨材として適合する形状に整形したアルカリ含有廃ガ
ラスを構成する個々の粒子を無作為に抽出して、検査し
た場合、いずれの粒子においてもその表面から深度３μ
ｍまでのＮａ2ＯとＫ2Ｏを合計した含有量が５重量％以
下となることを意味する。また、本発明は、別の側面に
おいて、モルタル用又はコンクリート用のガラス骨材製
造方法であり、該ガラス骨材製造方法は、アルカリ含有
ガラスカレットと塩化水素ガスとを反応させ、該アルカ
リ含有ガラスカレットからアルカリ分を除去することを
含むことを特徴とする。ガラス骨材製造方法では、アル
カリ含有廃ガラスが、アルカリ含有ガラスカレットとし
て提供され、既に骨材として使用するのに適切な形状
（粒径等）であれば、そのようなアルカリ含有ガラスカ
レットをそのまま用いることができる。しかし、アルカ
リ含有廃ガラスが粒径等について、骨材として適合する
形状に調整されていない場合、アルカリ含有廃ガラスを
骨材として適合する形状に整形する。すなわち、骨材の
用途によって異なるが、例えば、２０ｍｍ以下の粒径に
調整してアルカリ含有ガラスカレットとすることをさら
に含むことによってガラス骨材を製造することができ
る。That is, to achieve the above object, the present invention has a total content of Na 2 O and K 2 O from the surface to a depth of 3 μm of 5% by weight or less, and has a shape suitable for an aggregate. It is characterized by being derived from shaped alkali-containing glass. When the term “alkali” is used herein to indicate a component, it generally means Na 2 O, K 2 O, or both. Further, "the total content of Na 2 O and K 2 O from the surface to a depth of 3 μm is 5% by weight or less" means that an alkali-containing waste glass shaped into a shape suitable for an alkali-containing glass cullet or an aggregate is formed. When individual particles are randomly extracted and inspected, the depth of each particle is 3μ from the surface.
It means that the total content of Na 2 O and K 2 O up to m is 5% by weight or less. Further, the present invention, in another aspect, is a method for producing a glass aggregate for mortar or concrete, wherein the glass aggregate producing method comprises reacting an alkali-containing glass cullet with hydrogen chloride gas to obtain the alkali-containing glass. It is characterized by including removal of an alkaline component from the cullet. In the glass aggregate manufacturing method, the alkali-containing waste glass is provided as alkali-containing glass cullet, and if the shape (particle size etc.) is already suitable for use as an aggregate, such alkali-containing glass cullet is used as it is. Can be used. However, when the waste glass containing alkali is not adjusted in the shape suitable for the aggregate with respect to the particle size and the like, the waste glass containing the alkali is shaped into a shape suitable for the aggregate. That is, the glass aggregate can be manufactured by further including, for example, adjusting the particle size to 20 mm or less to obtain an alkali-containing glass cullet, which varies depending on the use of the aggregate.
【０００７】[0007]
【発明の実施の形態】以下に本発明に係るガラス骨材及
びその製造方法に関し、その実施の形態をさらに詳しく
説明する。本発明に係るガラス骨材、又はその製造方法
で、原料となる廃ガラスは、特に限定されるものではな
い。瓶ガラス、板ガラス、透明ガラス、着色ガラス等、
いかなるものも利用できる。また、後に述べるように、
これら廃ガラスと塩化水素ガスとの反応は加熱下で行う
ことができるので、医療現場から発生するガラス廃棄物
なども利用できる。また、用いる廃ガラスの粒度もとく
に限定するものではなく、塊状、粒状、粉末など如何な
る形態であってもよい。すなわち、予めガラスカレット
として提供されるものも本発明の対象となる。BEST MODE FOR CARRYING OUT THE INVENTION The embodiments of the glass aggregate and the method for producing the same according to the present invention will be described in more detail below. In the glass aggregate according to the present invention or the manufacturing method thereof, the waste glass as a raw material is not particularly limited. Bottle glass, plate glass, transparent glass, colored glass, etc.
Anything can be used. Also, as will be described later,
Since the reaction between these waste glass and hydrogen chloride gas can be carried out under heating, glass waste generated from medical sites can also be used. Further, the particle size of the waste glass used is not particularly limited and may be any form such as lumps, granules and powders. That is, a glass cullet provided in advance is also an object of the present invention.
【０００８】廃ガラスは、所定の大きさ、すなわち、骨
材として利用する際の大きさに粗砕、あるいは粉砕し、
一般的には、ガラスカレットとして調整される。すなわ
ち、例えば、粒径２０ｍｍ以下のアルカリ含有ガラスカ
レットとして調整される。その後、このアルカリ含有ガ
ラスカレットを塩化水素ガスと反応させて、ガラス表層
部におけるアルカリ成分を除去する。Waste glass is crushed or crushed to a predetermined size, that is, a size to be used as aggregate.
Generally, it is prepared as a glass cullet. That is, for example, it is prepared as an alkali-containing glass cullet having a particle diameter of 20 mm or less. Then, this alkali-containing glass cullet is reacted with hydrogen chloride gas to remove the alkali component in the glass surface layer portion.
【０００９】なお、塩化水素ガスと反応させたアルカリ
含有ガラスカレットに対して粗砕、粉砕操作を施すと、
アルカリが除去されていない新生面が露出することにな
る。したがって、廃ガラスは所定の大きさに加工して、
アルカリ含有ガラスカレットとしてから、塩化水素ガス
と反応させる。なお、最初から適切な粒径のアルカリ含
有ガラスカレットとして提供される場合には、このよう
な粒径の調整は不要である。When the alkali-containing glass cullet reacted with hydrogen chloride gas is crushed and crushed,
The new surface where the alkali has not been removed is exposed. Therefore, the waste glass is processed into a predetermined size,
Alkali-containing glass cullet is reacted with hydrogen chloride gas. When the glass cullet containing alkali having an appropriate particle diameter is provided from the beginning, such adjustment of the particle diameter is unnecessary.
【００１０】アルカリ含有ガラスカレットと塩化水素ガ
スとの反応条件は、アルカリ含有ガラスカレットの粒径
や塩化水素ガスの濃度に応じて調整する。もっとも、本
発明に係るガラス骨材では、表面から３μｍ深度までの
アルカリ含有量を５重量％以下としている。このために
は、塩化水素ガスの濃度が３〜５％であれば、２０〜６
００℃で７０分〜３４０分、また、塩化水素ガスの濃度
が５０〜６０％であれば、２０〜６００℃で５分〜３０
分である。なお、塩化水素ガスは市販のガスを用いても
よいが、塩化ビニル樹脂系の廃棄物や塩素含有廃棄物の
加熱脱塩過程から発生する塩化水素ガスなども利用でき
る。The reaction conditions between the alkali-containing glass cullet and hydrogen chloride gas are adjusted depending on the particle size of the alkali-containing glass cullet and the concentration of hydrogen chloride gas. However, in the glass aggregate according to the present invention, the alkali content from the surface to the depth of 3 μm is 5% by weight or less. To this end, if the concentration of hydrogen chloride gas is 3 to 5%, 20 to 6
70 minutes to 340 minutes at 00 ° C, and 5 minutes to 30 minutes at 20 to 600 ° C if the concentration of hydrogen chloride gas is 50 to 60%.
Minutes. As the hydrogen chloride gas, a commercially available gas may be used, but hydrogen chloride gas generated during the heat desalination process of vinyl chloride resin waste or chlorine-containing waste can also be used.
【００１１】上記の反応、すなわち加熱下において、ア
ルカリ含有ガラスカレットと塩化水素ガスを反応させた
場合、アルカリ含有ガラスカレットに含まれるナトリウ
ム、カリウムが塩化水素ガスと反応し、粒子の表面にＮ
ａＣｌ及びＫＣｌを形成する。これらの塩は、易溶性な
ので、反応終了後に水洗して、表面に形成された塩を除
去し、ガラス骨材とする。なお、本発明に係るガラス骨
材は、表面から３μｍ深度までのＮａ2Ｏ及びＫ2Ｏの合
計した含有量を５重量％以下と規定した。これは、廃ガ
ラスのアルカリ成分に起因するアルカリシリカ反応を抑
制するのに必要な条件である。５重量％を超える場合に
はアルカリシリカ反応を起こし、モルタル又はコンクリ
ート構造物の強度低下を起こす危険性が高くなる。ま
た、ガラス骨材の表面から３μｍよりも深部のアルカリ
成分はアルカリシリカ反応にほとんど寄与しないことを
見出している。When the alkali-containing glass cullet is reacted with hydrogen chloride gas under the above-mentioned reaction, that is, under heating, sodium and potassium contained in the alkali-containing glass cullet react with hydrogen chloride gas, and N on the surface of the particles.
Form aCl and KCl. Since these salts are easily soluble, they are washed with water after completion of the reaction to remove the salts formed on the surface to obtain a glass aggregate. In the glass aggregate according to the present invention, the total content of Na 2 O and K 2 O up to a depth of 3 μm from the surface was defined as 5% by weight or less. This is a condition necessary to suppress the alkali silica reaction due to the alkali component of waste glass. If it exceeds 5% by weight, there is a high risk that an alkali-silica reaction will occur and the strength of the mortar or concrete structure will decrease. Further, it has been found that an alkali component deeper than 3 μm from the surface of the glass aggregate hardly contributes to the alkali silica reaction.
【００１２】本発明で、ガラス骨材の粒子表面から３μ
ｍ深度までのＮａ2Ｏ及びＫ2Ｏの合計した含有量の定量
は、ＥＰＭＡ（電子プローブマイクロアナライザ）によ
り行うことができる。ＥＰＭＡでは、試料断面を線分析
し、反応層のＮａ及びＫ元素量からＮａ2Ｏ、Ｋ2Ｏ量に
換算して求めることができる。In the present invention, 3 μm from the particle surface of the glass aggregate.
The total content of Na 2 O and K 2 O up to the depth of m can be quantified by EPMA (electron probe microanalyzer). In EPMA, the cross section of the sample can be linearly analyzed and converted from the amounts of Na and K elements in the reaction layer into the amounts of Na 2 O and K 2 O.
【００１３】[0013]
【実施例】実施例１〜３及び比較例１，２
処理前のガラス原料の化学組成がＳｉＯ2：７１．３
％、Ａｌ2Ｏ3：３．０％、ＣａＯ：１１．５％、Ｎａ2
Ｏ：１２．０％、Ｋ2Ｏ：１．２％（いずれも重量％）
で粒径が２．５ｍｍ〜５ｍｍの廃ガラスカレットと、塩
化水素濃度１０％標準ガスとを用いて、６００℃の管状
電気炉で表１に記載する反応時間で、反応させて回収し
た試料を水洗し、これを ＪＩＳ Ａ５３０８ 附属書
７規定の「骨材のアルカリシリカ反応性試験方法（化学
法）」に準拠した方法で材料の有害性の良否を判定し
た。その結果を表１に示す。EXAMPLES Examples 1 to 3 and Comparative Examples 1 and 2 The chemical composition of the glass raw material before the treatment was SiO 2 : 71.3.
%, Al 2 O 3 : 3.0%, CaO: 11.5%, Na 2
O: 12.0%, K 2 O: 1.2% (both by weight)
And a sample recovered by reacting with a waste glass cullet having a particle diameter of 2.5 mm to 5 mm and a standard gas having a hydrogen chloride concentration of 10% at a reaction time shown in Table 1 in a tubular electric furnace at 600 ° C. After washing with water, the quality of the material was judged to be good or bad by a method in conformity with “Test method for alkali silica reactivity of aggregates (chemical method)” specified in Annex 7 of JIS A5308. The results are shown in Table 1.
【００１４】また、表１記載の反応水洗後の反応層厚及
び反応層アルカリ量は、評価ガラス試料の断面をＥＰＭ
Ａによる線分析を行い、Ｎａ元素及びＫ元素の減衰分布
状態から反応層の厚さを確認した結果及び反応層のＮａ
及びＫ元素量をＮａ2Ｏ、Ｋ2Ｏ量と見なし換算した値を
示す。Further, the reaction layer thickness and the reaction layer alkali amount after the reaction water washing shown in Table 1 are the EPM of the cross section of the evaluation glass sample.
The result of confirming the thickness of the reaction layer from the attenuation distribution state of Na element and K element by performing the line analysis by A
And K element amounts are regarded as Na 2 O and K 2 O amounts, and converted values are shown.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１の結果より、何も処理していないブラ
ンクガラス（比較例１）及び、深度３μｍまでの反応層
のＮａ2Ｏ及びＫ2Ｏの合計した含有量が５重量％を超え
る比較例２ではアルカリシリカ反応性が有害であるのに
対し、本発明のモルタル用又はコンクリート用ガラス骨
材（実施例１〜３）は、何れもアルカリシリカ反応の判
定性が無害であることが確認された。From the results shown in Table 1, a comparison was made in which the total content of Na 2 O and K 2 O in the blank glass (Comparative Example 1) not treated with anything and the reaction layer up to a depth of 3 μm exceeded 5% by weight. In Example 2, the alkali-silica reactivity was detrimental, whereas in the glass aggregates for mortar or concrete (Examples 1 to 3) of the present invention, it was confirmed that the decidability of the alkali-silica reaction was harmless. Was done.
【００１７】[0017]
【発明の効果】上記したところから明らかなように、本
発明によれば、廃ガラスの大量利用技術の確立を目指
し、モルタル又はコンクリートに無害であるガラス骨材
及びその製造方法が提供される。すなわち、本発明で
は、ガラスカレット表層部のアルカリを一定値以下に除
去することで、アルカリシリカ反応を生じさせることの
ない、モルタル用又はコンクリート用のガラス骨材とす
ることが可能となる。As is apparent from the above, according to the present invention, a glass aggregate which is harmless to mortar or concrete and a method for producing the same are provided with the aim of establishing a technique for mass-utilizing waste glass. That is, in the present invention, it is possible to obtain a glass aggregate for mortar or concrete that does not cause an alkali-silica reaction by removing the alkali in the surface layer of the glass cullet to a certain value or less.
フロントページの続き (72)発明者 松野 路雄 山口県小野田市大字小野田6276 太平洋セ メント株式会社環境技術開発センター内 (72)発明者 永田 憲史 山口県小野田市大字小野田6276 太平洋セ メント株式会社環境技術開発センター内Continued front page (72) Inventor Michio Matsuno 6276 Onoda, Onoda City, Yamaguchi Prefecture Mento Corporation Environmental Technology Development Center (72) Inventor Kenji Nagata 6276 Onoda, Onoda City, Yamaguchi Prefecture Mento Corporation Environmental Technology Development Center
Claims (3)
Ｏを合計した含有量が５重量％以下であり、骨材として
適合する形状に整形したアルカリ含有ガラスに由来する
ことを特徴とするモルタル用又はコンクリート用のガラ
ス骨材。1. Na 2 O and K 2 from the surface to a depth of 3 μm
A glass aggregate for mortar or concrete, which has a total content of O of 5% by weight or less and is derived from an alkali-containing glass shaped into a shape suitable as an aggregate.
ガスとを反応させ、該アルカリ含有ガラスカレットから
アルカリ分を除去することを含むことを特徴とするモル
タル用又はコンクリート用のガラス骨材製造方法。2. A method for producing a glass aggregate for mortar or concrete, which comprises reacting an alkali-containing glass cullet with hydrogen chloride gas to remove an alkali content from the alkali-containing glass cullet.
する形状に整形し、整形後のアルカリ含有廃ガラスと塩
化水素ガスとを反応させ、該アルカリ含有廃ガラスから
アルカリ分を除去することを含むことを特徴とするモル
タル用又はコンクリート用のガラス骨材製造方法。3. A method of shaping an alkali-containing waste glass into a shape suitable as an aggregate, reacting the shaped alkali-containing waste glass with hydrogen chloride gas, and removing an alkali content from the alkali-containing waste glass. A method for producing a glass aggregate for mortar or concrete, comprising:
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| JP2002093416A JP2003286054A (en) | 2002-03-29 | 2002-03-29 | Glass aggregate and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002093416A JP2003286054A (en) | 2002-03-29 | 2002-03-29 | Glass aggregate and its manufacturing method |
Publications (1)
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|---|---|
| JP2003286054A true JP2003286054A (en) | 2003-10-07 |
Family
ID=29237886
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|---|---|---|---|
| JP2002093416A Pending JP2003286054A (en) | 2002-03-29 | 2002-03-29 | Glass aggregate and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123458A (en) * | 2002-10-03 | 2004-04-22 | Taiheiyo Cement Corp | Admixture for cements and composition of the same |
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| JP2001342045A (en) * | 2000-05-29 | 2001-12-11 | Taiheiyo Cement Corp | Method of manufacturing cement clinker |
| WO2002002469A1 (en) * | 2000-06-30 | 2002-01-10 | Fmc Corporation | Lithium glass compositions |
| JP2002047074A (en) * | 2000-07-28 | 2002-02-12 | Japan Science & Technology Corp | Method for producing porous lightweight sintered product from waste material |
| WO2003024879A1 (en) * | 2001-09-12 | 2003-03-27 | Japan Science And Technology Agency | Method for recycling waste glass and recycled glass |
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2002
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648751A (en) * | 1992-07-30 | 1994-02-22 | Sony Corp | Method for removing impurity of glass for liquid crystal display element |
| JPH1017355A (en) * | 1996-07-03 | 1998-01-20 | Denka Grace Kk | High slump concrete and its production |
| JPH1095639A (en) * | 1996-09-13 | 1998-04-14 | Tokyo Ohka Kogyo Co Ltd | Container for chemical liquid for producing electronic part |
| JP2001342045A (en) * | 2000-05-29 | 2001-12-11 | Taiheiyo Cement Corp | Method of manufacturing cement clinker |
| WO2002002469A1 (en) * | 2000-06-30 | 2002-01-10 | Fmc Corporation | Lithium glass compositions |
| JP2002047074A (en) * | 2000-07-28 | 2002-02-12 | Japan Science & Technology Corp | Method for producing porous lightweight sintered product from waste material |
| WO2003024879A1 (en) * | 2001-09-12 | 2003-03-27 | Japan Science And Technology Agency | Method for recycling waste glass and recycled glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004123458A (en) * | 2002-10-03 | 2004-04-22 | Taiheiyo Cement Corp | Admixture for cements and composition of the same |
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