JPH0686318B2 - Hydraulic paving material - Google Patents
Hydraulic paving materialInfo
- Publication number
- JPH0686318B2 JPH0686318B2 JP23019789A JP23019789A JPH0686318B2 JP H0686318 B2 JPH0686318 B2 JP H0686318B2 JP 23019789 A JP23019789 A JP 23019789A JP 23019789 A JP23019789 A JP 23019789A JP H0686318 B2 JPH0686318 B2 JP H0686318B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- blast furnace
- granulated
- granulated blast
- strength
- 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.)
- Expired - Lifetime
Links
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、水硬性舗装材に係り、さらに詳しくは、道
路、歩道および駐車場等の舗装材料であって鉄鋼業で発
生する副生物である各種スラグおよびその加工物を利用
した、施工が簡便で、長期強度が発現する舗装材料に関
する。Description: TECHNICAL FIELD The present invention relates to a hydraulic pavement material, and more particularly to a paving material for roads, sidewalks, parking lots and the like, which is a by-product generated in the steel industry. The present invention relates to a pavement material that uses a certain variety of slag and its processed product, is simple in construction, and exhibits long-term strength.
〔従来の技術〕 道路の駐車場等の表層部に使用する材料としては、アス
ファルト合材や生コンクリート等が一般的であるが、こ
れらは多額の投資により作られたプラントにより製造さ
れる工場製品であるとともに、材料自体が高価であるた
め、利用に戸惑うことがある。[Prior Art] Asphalt mix and ready-mixed concrete are generally used as materials for the surface layer of road parking lots, etc., but these are factory products manufactured by a plant made with a large investment. In addition, since the material itself is expensive, it may be confusing to use.
そこで、鉄鋼業の副生物である各種スラグを使用して舗
装材料とする方法は、従来、いくつか提案されている。Therefore, there have been conventionally proposed some methods of using various slags, which are by-products of the steel industry, as pavement materials.
例えば（１）特開昭53−61129号公報には、高炉水砕ス
ラグを主成分とし、２〜16％（以下％は全て重量％であ
る）の硬化促進材（石灰類、セメントなど）を添加し、
敷均し、転圧した後、水性エマルジョンなどの表面処理
材を散布含浸させ透水性舗装材としたものが示されてい
る。For example, (1) Japanese Patent Application Laid-Open No. 53-61129 discloses a hardening accelerator (limes, cement, etc.) containing 2 to 16% (hereinafter, all% are% by weight) containing blast furnace granulated slag as a main component. Add
It is shown that a water-permeable pavement material is obtained by spreading and impregnating a surface treatment material such as an aqueous emulsion after laying and rolling.
（２）特開昭55−148124号公報および特開昭55−148125
号公報には高炉スラグに、転炉スラグの粉砕物を添加
し、これに石膏類や生石灰を添加したものが示されてい
る。(2) JP-A-55-148124 and JP-A-55-148125
Japanese Patent Laid-Open Publication No. 1994-53242 discloses a blast furnace slag to which a crushed product of a converter slag is added, and gypsum and quick lime are added thereto.
また、（３）特開昭61−40902号公報には、高炉水砕ス
ラグを粉砕し、これにセメントや石灰などのアルカリ刺
激材を添加することが開示されている。Further, (3) Japanese Patent Laid-Open No. 61-40902 discloses crushing granulated blast furnace slag and adding an alkali stimulant such as cement or lime to this.
しかし、（１）の方法では、高炉水砕スラグを主成分と
しているため、強度発現が弱く、養生に日数がかかるほ
か、高炉水砕スラグの粒度が単粒度であるために施工時
の転圧が難しい。However, in the method of (1), since granulated blast furnace slag is the main component, strength development is weak and it takes days to cure. In addition, because the granulated blast furnace slag has a single particle size, compaction at the time of construction is performed. Is difficult.
（２）の特開昭53−148124号や特開昭53−148125号など
では上記の欠点をカバーするため、粗骨材として転炉ス
ラグを用いたり、石膏やセメントを添加することによ
り、施工性を改善したり、強度を高める対策を施してい
るが舗装材の硬化時に膨張・収縮によりクラック（亀
裂）が生じる恐れがあり、表面性状を損なう問題があ
る。In (2) JP-A-53-148124, JP-A-53-148125, etc., in order to cover the above-mentioned drawbacks, a converter slag is used as coarse aggregate, or by adding gypsum or cement, construction is performed. However, there is a possibility that cracks may occur due to expansion / contraction when the pavement material is cured, and the surface quality is impaired.
また、一般に、高炉水砕スラグと転炉スラグの２種混合
する舗装材料では、転炉スラグのアルカリ分の溶出が生
石灰やセメントに比べて少なく、また、高炉水砕スラグ
が比較的粗粒であるために、水硬性の活性度が低く特に
初期における強度の発現が弱く、施工から養生後の使用
を遅らせる必要がある。Further, generally, in the paving material in which two types of granulated blast furnace slag and converter slag are mixed, the alkali content of the converter slag is smaller than that of quick lime and cement, and the granulated blast furnace slag is relatively coarse-grained. For this reason, the hydraulic activity is low and the strength development is weak especially at the initial stage, and it is necessary to delay the use after construction and after curing.
（３）の特開昭61−40902号では高炉水砕スラグの活性
を高めるため、クラッシャー等で破砕し、細粒化して、
セメント等のアルカリ刺激材を添加し、水硬性を高める
としているが、高炉水砕スラグ全体を所定の粒径に破砕
することを要するため不経済である。In JP-A-61-40902 of (3), in order to enhance the activity of granulated blast furnace slag, it is crushed by a crusher or the like to be finely granulated,
Although it is said that an alkali stimulant such as cement is added to enhance the hydraulic property, it is uneconomical because it is necessary to crush the entire granulated blast furnace slag into a predetermined particle size.
また、その改良として特開昭62−123046号では、高炉水
砕スラグ（軽粉砕したもの）と製鋼スラグとの配合関係
を規定している。この発明は、特開昭61−40902号と同
様に、細粒度Ｆが20〜50の高炉水砕スラグをコーンクラ
ッシャーにより細粒度Ｆが50〜110となるまで軽粉砕し
て、これを製鋼スラグ粒子の空隙に充填し、バインダー
的に用いることにより強度の増大を図るものである。Further, as an improvement, JP-A-62-123046 defines the mixing relation between granulated blast furnace slag (lightly crushed) and steelmaking slag. This invention, similarly to Japanese Patent Laid-Open No. 61-40902, lightly pulverizes granulated blast furnace slag having a fine grain size F of 20 to 50 with a cone crusher until the fine grain size F becomes 50 to 110, and produces the steelmaking slag. The strength is increased by filling the voids of the particles and using them as a binder.
しかし、高炉水砕スラグを軽粉砕し、これを８〜30％配
合したとしても、同公報４頁の第２表に記載のとおり、
14日強度は12〜28Kgf/cm2とさほど高くない。また、製
鋼スラグ−軽粉砕高炉水砕スラグ−高炉徐冷スラグの系
では、細粒度Ｆが110を超えると、第３図に示されてい
るとおり、製鋼スラグに対する膨張量吸収効果がなくな
り、かつ第４図に示されているとおり、強度の低下を生
じるものである。However, even if the granulated blast furnace slag is lightly pulverized and 8 to 30% of this is blended, as shown in Table 2 on page 4 of the same publication,
The 14-day intensity is not so high as 12 to 28 Kgf / cm 2 . Further, in the system of steelmaking slag-light crushed blast furnace water granulated slag-blast furnace slowly cooled slag, when the fine grain size F exceeds 110, as shown in FIG. 3, the expansion amount absorbing effect on the steelmaking slag disappears, and As shown in FIG. 4, the strength is reduced.
そこで、本発明の主たる目的は、鉄鋼業における副生物
を利用しながら安価であるとともに、初期強度が高く、
クラックなどの発生がなく表面性状に優れ、また長期的
な強度も高く耐久性に富む水硬性舗装材を提供すること
にある。Therefore, the main object of the present invention is inexpensive while using by-products in the steel industry, high initial strength,
An object of the present invention is to provide a hydraulic pavement material which is free from cracks and has excellent surface properties, and which has high long-term strength and durability.
重量で：微粉末化しておらず細粒分が少ないままの最大
粒径5mm以下の高炉水砕スラグ75〜35％：比表面積3000
〜4500cm2/gの高炉水砕スラグ微粉末３〜10％、最大粒
径15mm以下で、ふるい目0.4mm通過が15〜20％、ふるい
目0.074mm通過が４〜10％の転炉スラグ20〜60％からな
ることで解決できる。By weight: Granulated blast furnace slag with a maximum particle size of 5 mm or less without fine powder and small fine particles 75-35%: Specific surface area 3000
Granulated blast furnace granulated slag 3 ~ 10% of ~ 4500 cm 2 / g, maximum particle size 15 mm or less, converter 0.4 mm passing 15 ~ 20%, sieve 0.074 mm passing 4 ~ 10% converter slag 20 It can be solved by comprising ~ 60%.
本発明では、高炉水砕スラグの活性度が低いことに鑑
み、高炉水砕スラグとともに、比表面積3000〜4500cm2/
gの高炉水砕スラグ微粉末を用いている。これによっ
て、舗装材の活性度を高め、初期強度を高めることがで
きる。さらに、前述の特開昭61−40902号および特開昭6
2−123046号では、高炉水砕スラグを軽粉砕して、前者
においては、具体的にはセメントを添加し、後者におい
ては、製鋼スラグおよび高炉徐冷スラグとの３成分系と
しているが、強度がさほど高くないのに対して、本発明
においては、高炉水砕スラグ微粉末を３〜10％の少ない
配合量とし、特定のすなわち粒径が小さい転炉スラグを
用いることにより、強度の増大が、たとえ後述の第３表
および第４表に示されているとおり、14日強度は18〜44
kgf/cm2ときわめて高く、顕著なものとなる。In the present invention, in view of the low activity of granulated blast furnace slag, together with granulated blast furnace slag, specific surface area 3000 ~ 4500 cm 2 /
It uses granulated blast furnace granulated slag powder. Thereby, the activity of the pavement material can be increased and the initial strength can be increased. Furthermore, the above-mentioned JP-A-61-40902 and JP-A-SHO-6-40
In No. 2-123046, granulated blast furnace slag is lightly crushed, concretely cement is added in the former, and steel slag and slowly cooled blast furnace slag are used as a three-component system in the latter. However, in the present invention, the strength is increased by using the granulated blast furnace slag fine powder in a small compounding amount of 3 to 10% and by using the converter slag having a specific particle size, that is, a small particle size. , The 14-day intensity is 18-44, as shown in Tables 3 and 4 below.
It is extremely high at kgf / cm 2 and becomes remarkable.
かかる高炉水砕スラグおよび高炉水砕スラグの微粉末に
対して所定量の転炉スラグを添加すると、その転炉スラ
グがアルカリ刺激材として作用し、水和物を生成して強
度の発現を示す。その際、転炉スラグとして粒径を適切
に選定しているので、水和物の生成が確実に行われると
ともに、優れた表面性状がもたらされる。When a predetermined amount of the converter slag is added to the granulated blast furnace slag and the fine powder of the granulated blast furnace slag, the converter slag acts as an alkali stimulant and forms a hydrate to exhibit strength. . At that time, since the particle size is properly selected as the converter slag, the hydrate is surely produced and excellent surface properties are brought about.
以下本発明をさらに詳説する。 The present invention will be described in more detail below.
本発明では、高炉水砕スラグと、高炉水砕スラグの微粉
末（以下単に微粉末ともいう）と、転炉スラグとを主体
とする。The present invention mainly comprises granulated blast furnace slag, fine powder of granulated blast furnace slag (hereinafter also simply referred to as fine powder), and converter slag.
高炉水砕スラグの活性度を高めるために、未粉砕の高炉
水砕スラグ75〜35％に対して、比表面積3000〜4500cm2
／の高炉水砕スラグ微粉末を３〜10％添加する。これに
より、舗装体としての初期強度が高まる。In order to increase the activity of granulated blast furnace slag, specific surface area of 3000 to 4500 cm 2 against 75 to 35% of unground blast furnace granulated slag
3 to 10% of granulated blast furnace granulated slag powder of / is added. This increases the initial strength of the pavement.
さらに、アルカリ刺激材として、最大粒径15mm以下で、
ふるい目0.4mm通過が15〜20％、ふるい目0.074mm通過が
４〜10％の転炉スラグを20〜60％の配合量で使用する。Furthermore, as an alkali stimulant, with a maximum particle size of 15 mm or less,
Use a converter slag having a sieve opening of 0.4 mm for 15 to 20% and a sieve opening of 0.074 mm for 4 to 10% in a blending amount of 20 to 60%.
高炉水砕スラグおよび微粉末はアルカリ刺激材の存在下
では、スラグのガラス質組織を構成する網目構造が切断
され、スラグ成分が溶解し、CaO−SiO2−H2O（Ｃ−Ｓ−
Ｈ系水和物）系の水和物を生成し、凝結硬化する。Granulated blast furnace slag and fine powder in the presence of alkali activator material, the network structure is cut constituting the vitreous tissue slag, slag component is dissolved, CaO-SiO 2 -H 2 O (C-S-
H-type hydrate) -type hydrate is formed, and it is set and hardened.
しかし、高炉水砕スラグは第２表でも示すように細粒分
が少ないため反応が遅く、徐々にしか反応を示さないた
め、微粉末化した高炉水砕スラグを添加して表面積を増
大させることにより、水和反応を高めて、Ｃ−Ｓ−Ｈ系
水和物を早期に生成させ、初期強度を発現させることが
できる。However, as shown in Table 2, the granulated blast furnace slag has a small amount of fine particles, so the reaction is slow and shows a gradual reaction. Therefore, it is necessary to add granulated blast furnace granulated slag to increase the surface area. As a result, the hydration reaction can be enhanced, C-S-H hydrate can be produced at an early stage, and the initial strength can be expressed.
また、転炉スラグのアルカリ刺激効果も、その細粒分の
多少により変化する。すなわち、スラグ内のCaイオンが
溶出し、水と反応して水酸化カルシウムが生成するた
め、アルカリ性を示すのであるから、転炉スラグの比表
面積は大きいほど反応性が良好である。しかし、転炉ス
ラグの粒度があまりにも小さいと、転圧時の施工性およ
び表面性状等の仕上がり性を悪化させる。また、粒径が
大きすぎると骨材の膨張量が大きくなるので、転炉スラ
グの最大粒径は10〜15mmとする。Further, the alkali stimulating effect of the converter slag also changes depending on the amount of fine particles. That is, since Ca ions in the slag are eluted and react with water to form calcium hydroxide, which exhibits alkalinity, the larger the specific surface area of the converter slag, the better the reactivity. However, if the particle size of the converter slag is too small, the workability at the time of compaction and the finish properties such as surface properties are deteriorated. Further, if the particle size is too large, the amount of expansion of the aggregate increases, so the maximum particle size of the converter slag is set to 10 to 15 mm.
一方、高炉水砕スラグ、高炉水砕スラグ微粉末および転
炉スラグの量規定の理由は、上述の定性的な説明ととも
に、次記の実施例の結果から判明できるであろう。On the other hand, the reason for defining the amounts of the granulated blast furnace slag, the granulated blast furnace slag fine powder and the converter slag will be clarified from the results of the following examples together with the above qualitative explanation.
以下本発明の実施例を比較例とともに示し、本発明の効
果を明らかにする。Hereinafter, examples of the present invention will be shown together with comparative examples to clarify the effects of the present invention.
（実施例１）：スラグの配合の違いによる強度差 高炉水砕スラグ、高炉水砕スラグ微粉末、転炉スラグの
配合を変化させ、それぞれについて強度と水浸膨張率に
ついて調査した結果を第３表、また、それぞれのスラグ
の成分、および粒度分布を第１表、第２表に示す。な
お、微粉末の比表面積は4300cm2/gである。(Example 1): Strength Difference Due to Difference in Mixing of Slag Mixing of blast furnace granulated slag, blast furnace granulated slag fine powder, and converter slag was changed, and the results of investigation of strength and water immersion expansion coefficient for each were No. 3 Tables, the components of each slag, and the particle size distribution are shown in Tables 1 and 2. The specific surface area of the fine powder is 4300 cm 2 / g.
まず、第３表の配合No.4と５の比較において、スラグ微
粉末の配合の有無により初期における強度差が著しく生
ずることがわかった。 First, in the comparison of formulation Nos. 4 and 5 in Table 3, it was found that the strength difference at the initial stage remarkably occurs depending on the presence or absence of the slag fine powder.
また供試体（10cmφ×12.7cmH）の強度は転炉スラグの
配合率により、大きく左右されるが、10〜60％までは配
合に比例して強度が増加するが、それ以上だとむしろ強
度は低下しており、これに理由は、高炉水砕スラグの配
合が相対的に少なくなることにより、高炉水砕スラグ成
分（CaO,SiO2，Al2O3）の溶出が少なくなり、水和物の
生成が減少するためと考えられる。The strength of the test piece (10 cmφ x 12.7 cmH) is greatly influenced by the blending ratio of the converter slag, but the strength increases in proportion to the blending from 10 to 60%, but if it is more than that, the strength is rather This is because the content of granulated blast furnace granulated slag is relatively small, and the elution of granulated blast furnace slag components (CaO, SiO 2 , Al 2 O 3 ) is reduced, and hydrates are reduced. It is thought that this is because the generation of
「アスファルト舗装要綱」には水硬性粒度調整鉄鋼スラ
グの一軸圧縮強さ（14日）は12kgf/cm2以上と定められ
ており、したがって舗装体の転炉スラグの配合率は強度
面から20％以上にする必要があることが判った。The “Asphalt Pavement Guidelines” stipulates that the uniaxial compressive strength (14 days) of hydraulically controlled grain-size controlled steel slag is 12 kgf / cm 2 or more, so the pavement converter slag content is 20% in terms of strength. It turns out that it is necessary to do above.
また、転炉スラグの強度および亀裂の発生について、転
炉スラグの配合を増加させることにより、膨張率が大き
くなる。特に70％配合以上だと成型乾燥法による試験で
は試供体に亀裂が発生する。Further, regarding the strength of the converter slag and the occurrence of cracks, the expansion rate increases by increasing the content of the converter slag. In particular, if the content is 70% or more, cracks will occur in the sample in the test by the molding drying method.
「アスファルト舗装要綱」には鉄鋼スラグ路盤材の水浸
膨張率は1.5％以下と定められており、本舗装体の転炉
スラグの配合率は60％以下にする必要があることも判っ
た。The "asphalt pavement summary" stipulates that the water immersion expansion coefficient of steel slag roadbed materials is 1.5% or less, and it was also found that the mixing ratio of converter slag in this pavement should be 60% or less.
（実施例２）：微粉末の配合量 高炉水砕スラグ微粉末の配合量については、第４表に示
すとおり、転炉スラグの配合を一定にして、高炉水砕微
粉末の量を１〜20％まで変えて、強度を調べた。(Example 2): Compounding amount of fine powder As for the compounding amount of granulated blast furnace slag fine powder, as shown in Table 4, the blending ratio of converter slag is kept constant and the amount of granulated blast furnace granulated powder is 1 to 1. The strength was examined by changing it to 20%.
その結果、３％未満での配合では、強度発現が弱く、ま
た、混合ムラも生じていることが考えられる。 As a result, it is considered that when the content is less than 3%, strength development is weak and uneven mixing occurs.
また10％を超えると、強度の伸びもあまり期待できず、
不経済であるばかりでなく、細粒分が多くなりすぎて、
施工性に問題がでてくることが判った。Moreover, if it exceeds 10%, the elongation of strength cannot be expected so much,
Not only is it uneconomical, but the amount of fine particles is too large,
It turned out that there was a problem in workability.
転炉スラグの細粒分については、アルカリ刺激材として
の効果面より0.4mmふるい通過量が15〜20％、0.074mmふ
るい通過量が４〜10％のものが好ましいことも判明し
た。It was also found that the fine particles of the converter slag are preferably those having a 0.4 mm sieve passage amount of 15 to 20% and a 0.074 mm sieve passage amount of 4 to 10% in view of the effect as an alkali stimulant.
（実施例３） 上記基礎的実験の後、以下の通りの実施工を行った。(Example 3) After the basic experiment, the following work was performed.
配 合・高炉水砕スラグ 5mm〜０ 45％ ・高炉水砕スラグ微粉末 4300cm2/g ５％ ・転炉スラグ 15mm〜０ 50％ 施工厚 Ａ＝15cm Ｂ＝30cm 面 積 Ａ＝290m2 Ｂ＝290m2 配合後の舗装材料の物性 ・単位容積質量 1.540kg/l ・最大乾燥密度 1.956g/cm3 ・最適含水比 15.3％ ・水浸膨張率 1.40％ （80℃×6H×10日） 施 工 上記舗装材料を駐車場を表層材料として、砂地盤上に用
いた。施工は次の順序により実施した。Combined ・ Blast furnace granulated slag 5 mm to 0 45% ・ Blast furnace granulated slag fine powder 4300 cm 2 / g 5% ・ Converter slag 15 mm to 0 50% Construction thickness A = 15 cm B = 30 cm Area A = 290 m 2 B = Physical properties of paving material after 290 m 2 blend ・ Unit volume mass 1.540 kg / l ・ Maximum dry density 1.956 g / cm 3・ Optimum water content ratio 15.3% ・ Water immersion expansion coefficient 1.40% (80 ℃ × 6H × 10 days) The above paving material was used on the sand ground using the parking lot as the surface layer material. The construction was carried out in the following order.
（イ）敷均し、 ブルトーザー （ロ）一次転圧 鉄輪ローラー 散水実施 （ハ）仕上転圧 タイヤローラー 散水実施 なお、A,Bとも敷均しは一層で行い、施工状況はいずれ
も良好であった。(A) Leveling, bulltozer (b) Primary rolling compaction, iron wheel roller sprinkling (c) Finish compaction rolling, tire roller sprinkling In addition, both A and B were spread evenly, and the construction conditions were good. It was
施工後の調査状況 （イ）一軸圧縮強度およびすべり抵抗性の調査結果は第
５表および第６表の通りであった。Survey status after construction (a) Tables 5 and 6 show the results of the survey on uniaxial compressive strength and slip resistance.
いずれも日本道路公団の規格である60BPNを上廻ってい
る。 Both exceed 60BPN, which is the standard of the Japan Highway Public Corporation.
さらに、平坦性についても調べたところ、ひびわれ等の
以上もなく良好であった。Furthermore, when the flatness was also examined, it was good without cracks.
（実施例４） 他方、さらに他の個所で実施工を行った。(Example 4) On the other hand, the work was carried out at another place.
配 合・高炉水砕スラグ 5mm〜０ 50％ ・高炉水砕スラグ微粉末 4000cm2/g ３％ ・転炉スラグ 15mm〜０ 47％ 0.4mmフルイ 15.2％通過 0.074mmフルイ 4.4％通過 施工厚 20cm 面 積 10,000m2 施 工 上記舗装材料を大型トラックの駐車場用上層路盤材とし
て、関東ローム層の路床上に用い、表層には密粒度アス
ユンを5cm厚で施工した。Combined ・ Blast furnace granulated slag 5 mm to 0 50% ・ Blast furnace granulated slag fine powder 4000 cm 2 / g 3% ・ Converter slag 15 mm to 0 47% 0.4 mm Flew 15.2% passed 0.074 mm Fruy 4.4% passed Construction thickness 20 cm surface 10,000 m 2 process The above pavement material was used as the upper layer roadbed material for parking lots of large trucks on the roadbed of the Kanto Loam layer, and dense-grained Asyun with a thickness of 5 cm was applied to the surface layer.
約１年経過後の状況はクラックや支持力の低下もなく良
好であった。After about 1 year, the condition was good without cracks or reduction in bearing capacity.
混合後の舗装材の物性値 結果は、第７表および第８表の通りであった。The physical property values of the pavement material after mixing were as shown in Tables 7 and 8.
第７表の通り、実施例３および４共に、優れた舗装体を
得ることができた。 As shown in Table 7, excellent pavements could be obtained in both Examples 3 and 4.
以上の通り、本発明によれば、鉄鋼業における副生物を
利用しながら安価であるとともに、初期強度が高く、ク
ラックなどの発生がなく表面性状に優れ、また長期的な
強度も高く耐久性に富む水硬性舗装材を得ることができ
る。As described above, according to the present invention, it is inexpensive while utilizing by-products in the steel industry, has high initial strength, is excellent in surface properties without occurrence of cracks, etc., and has high long-term strength and durability. A rich hydraulic pavement material can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 18:14 Ｃ 2102−4Ｇ ） Ｆ 2102−4Ｇ (72)発明者 末次 純二 茨城県鹿島郡鹿島町大字光３番地 住友金 属工業株式会社鹿島製鉄所内 (72)発明者 井上 秀夫 茨城県鹿島郡鹿島町大字光３番地 住友金 属工業株式会社鹿島製鉄所内 (56)参考文献 特開 昭62−123046（ＪＰ，Ａ) 特開 昭56−96754（ＪＰ，Ａ)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical indication location C04B 18:14 C 2102-4G) F 2102-4G (72) Inventor Junji Suetsugu Kashima-gun Kashima-gun Kashima Mitsuzai Hikaru No. 3 Sumitomo Kinka Kogyo Kashima Steel Works (72) Inventor Hideo Inoue Kashima-cho Kashima-gun Ibaraki No. 3 Hikari No. Sumitomo Metal Kogyo Kashima Works (56) Reference JP 62- 123046 (JP, A) JP-A-56-96754 (JP, A)
Claims (1)
いままの最大粒径5mm以下の高炉水砕スラグ75〜35％：
比表面積3000〜4500cm2/gの高炉水砕スラグ微粉末３〜1
0％、最大粒径15mm以下で、ふるい目0.4mm通過が15〜20
％、ふるい目0.074mm通過が４〜10％の転炉スラグ20〜6
0％からなることを特徴とする水硬性舗装材。1. By weight: 75-35% of granulated blast furnace slag with a maximum particle size of 5 mm or less, which is not pulverized and has a small amount of fine particles:
Granulated blast furnace slag powder with a specific surface area of 3000 to 4500 cm 2 / g 3 to 1
0%, maximum particle size of 15 mm or less, 0.4 to 0.4 mm sieve passage is 15 to 20
%, Converter slag 20 to 6 with a sieve opening of 0.074 mm and 4 to 10%
A hydraulic pavement material characterized by comprising 0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23019789A JPH0686318B2 (en) | 1989-09-05 | 1989-09-05 | Hydraulic paving material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23019789A JPH0686318B2 (en) | 1989-09-05 | 1989-09-05 | Hydraulic paving material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0393657A JPH0393657A (en) | 1991-04-18 |
| JPH0686318B2 true JPH0686318B2 (en) | 1994-11-02 |
Family
ID=16904105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23019789A Expired - Lifetime JPH0686318B2 (en) | 1989-09-05 | 1989-09-05 | Hydraulic paving material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686318B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1195361T3 (en) * | 2000-10-09 | 2005-01-31 | Wopfinger Stein Kalkwerke | Hydraulic binder |
| JP4171200B2 (en) * | 2001-04-18 | 2008-10-22 | 新日本製鐵株式会社 | Method for producing concrete solidified body using steelmaking slag |
| CZ297709B6 (en) * | 2001-09-11 | 2007-03-07 | Wopfinger Stein- Und Kalkwerke Schmid & Co. | Hydraulic binding agent |
| JP4696851B2 (en) * | 2005-10-28 | 2011-06-08 | Ｊｆｅスチール株式会社 | Simple paving slag and simple paving body, civil engineering slag and civil engineering construction body |
| CN107555819B (en) * | 2017-09-19 | 2020-05-19 | 山东东华水泥有限公司 | Special cement for high-speed rail and preparation method thereof |
| JP7756488B2 (en) * | 2021-02-26 | 2025-10-20 | Ｕｂｅ三菱セメント株式会社 | Cement composition and method for producing same |
| JPWO2025243587A1 (en) * | 2024-05-20 | 2025-11-27 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696754A (en) * | 1979-12-28 | 1981-08-05 | Hamada Juko | Manufacture of nonnburnt cement from raw materials of steel slag and blast furnace slag |
| JPS62123046A (en) * | 1985-11-22 | 1987-06-04 | 株式会社神戸製鋼所 | Manufacture of hydraulic road bed material |
-
1989
- 1989-09-05 JP JP23019789A patent/JPH0686318B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0393657A (en) | 1991-04-18 |
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