JPH07315906A - Cement based composition for paved surface layer - Google Patents
Cement based composition for paved surface layerInfo
- Publication number
- JPH07315906A JPH07315906A JP12989594A JP12989594A JPH07315906A JP H07315906 A JPH07315906 A JP H07315906A JP 12989594 A JP12989594 A JP 12989594A JP 12989594 A JP12989594 A JP 12989594A JP H07315906 A JPH07315906 A JP H07315906A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- soil
- composition
- surface layer
- parts
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、加熱アスファルト混合
物に代って、道路等の舗装の表層用として使用するセメ
ント系組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cement composition for use as a surface layer of a pavement for roads, etc., instead of a hot asphalt mixture.
【０００２】[0002]
【従来の技術】日本の道路舗装の総延長は、簡易舗装を
含めて８０万ｋｍにおよんでいて、アスファルト舗装が
その大部分を占めている。公害の発生源とも言うべき化
石エネルギーからクリーンなエネルギーへ切り替える努
力がなされている昨今、資源不足となる恐れのある表層
用アスファルトは、他の物質への切り替えを考えておく
必要がある。2. Description of the Related Art The total length of road pavement in Japan is 800,000 km including simple pavement, and asphalt pavement occupies the most part. In recent years, efforts are being made to switch from fossil energy, which should be called the source of pollution, to clean energy. For surface asphalt, which may run out of resources, it is necessary to consider switching to other substances.
【０００３】まして、現在でも、精油所から離れた辺鄙
な地区においては、アスファルトはおろか、所謂、舗装
材料全てが、安価に入手が困難な場合もあるので、僅か
な、固化剤類を現地に運ぶだけで、大部分は現地にある
土砂等を材料として、舗装が出来る工法の開発が望まれ
ているのが現状である。Even now, in a remote area away from the refinery, not only asphalt but also so-called pavement materials may be difficult to obtain at low cost, so a few solidifying agents are locally available. At present, it is desired to develop a construction method that allows paving by using the earth and sand, etc., that are mostly in the field, just by transporting them.
【０００４】本件発明者は、かかる状況を考慮して、本
発明の開発に着手し、アスファルト以上に簡単な施工法
が可能であり、より経済的で、より耐久性のある「セメ
ント系表層用組成物」の開発に成功した。In consideration of such a situation, the inventor of the present invention has begun the development of the present invention, is capable of a simpler construction method than asphalt, and is more economical and more durable. The composition was successfully developed.
【０００５】路床・路盤が、舗装に耐えない軟弱層であ
る場合に、これを安定処理して、耐えられる路床・路盤
とする安定処理剤に、本件発明者の開発した「土壌凝結
硬化剤」（商品名フジベトン）がある。When the roadbed / roadbed is a soft layer that does not withstand pavement, it is subjected to a stable treatment to make it a roadbed / roadbed that can withstand. Agent (trade name Fuji Beton).
【０００６】このフジベトンによって、如何なる軟弱層
も、堅固な路床・路盤に改良出来るものであって、従来
はその上に「表層用加熱アスファルト混合物」を施して
「アスファルト舗装」としていた。[0006] By using this Fuji Beton, any soft layer can be improved to a solid roadbed or roadbed. Conventionally, "hot asphalt mixture for surface layer" was applied on it to form "asphalt pavement".
【０００７】本件発明者は、現地の土砂を主原料とし、
これに上述の土壌凝結硬化剤と合成樹脂エマルジョンの
希釈液とを混合混練したものを表層とすることによっ
て、僅かな薬品類を現地に運ぶだけで、アスファルト舗
装に匹敵する表層が容易に、経済的に如何なる辺鄙な地
区においても、得られることを見出した。The present inventor uses local earth and sand as a main raw material,
By mixing and kneading the above-mentioned soil hardening agent and the diluent of the synthetic resin emulsion into the surface layer, the surface layer comparable to asphalt pavement can be easily and economically produced by only carrying a small amount of chemicals to the site. I found that it can be obtained in any remote area.
【０００８】[0008]
【発明の構成、作用】本発明は、 （１）現地の土砂 １００重量部と （２）（ｉ） ポルトランドセメント ９
７〜９９重量％ （ii） リグニンスルホン酸アルカリ金属塩 １.０〜
０.５重量％ （iii）水酸化カルシウム １.０〜
０.５重量％及び （iv） ソーダ灰 １.０〜
０.５重量％ からなる土壌凝結硬化剤 ５〜２０重量
部 とを混合した組成物Ａ １００重量部に対して （３）合成樹脂エマルジョン１〜３重量部を水で希釈し
た組成物Ｂを、組成物Ａが最適含水比になるまで添加
し、混練したことを特徴とする舗装表層用セメント系組
成物を提供する。The present invention comprises: (1) 100 parts by weight of local earth and sand; and (2) (i) Portland cement 9
7-99% by weight (ii) Lignin sulfonic acid alkali metal salt 1.0
0.5% by weight (iii) calcium hydroxide 1.0-
0.5 wt% and (iv) soda ash 1.0-
A composition B prepared by diluting 1 to 3 parts by weight of a synthetic resin emulsion with water is added to 100 parts by weight of a composition A mixed with 5 to 20 parts by weight of a soil coagulant hardening agent consisting of 0.5% by weight. Provided is a cementitious composition for pavement surface layer, which is obtained by adding the composition A to an optimum water content ratio and kneading the mixture.
【０００９】アスファルト舗装に関しては、財団法人日
本道路協会の「アスファルト舗装要綱」が重要な技術基
準を支えている。本発明の表層用セメント系組成物は、
この「アスファルト舗装要綱」に準じて設計することが
できる。Regarding the asphalt pavement, the "Asphalt Pavement Outline" of the Japan Road Association supports important technical standards. The surface layer cementitious composition of the present invention,
It can be designed according to this “asphalt paving outline”.
【００１０】本発明において、土壌凝結硬化剤及び合成
樹脂エマルジョン希釈液の配合割合は、主原料の土砂が
砂質上であるか粘性土であるか、含水比が多いか少ない
か等によって変化する。土砂が粘性土であってしかも含
水比が適性含水比を越えるような場合は、出来れば、乾
燥土を加える等によって土の状態を改善するのが、他の
方法によるよりも経済的であることが多い。In the present invention, the mixing ratio of the soil hardening agent and the diluent for the synthetic resin emulsion changes depending on whether the main raw material is sandy or cohesive soil, or whether the water content is high or low. . If the sand is cohesive and the water content exceeds the appropriate water content, it is more economical to improve the soil condition by adding dry soil, etc., if possible, rather than using other methods. There are many.
【００１１】通常の土に対しては、土壌凝結硬化剤を現
地の±１００重量部に対して、５〜２０重量部添加し
て、均一になるまで混合する。この場合、混合方法とし
ては、中央混合方式或は路上混合方式等がある。For ordinary soil, 5 to 20 parts by weight of the soil hardening agent is added to ± 100 parts by weight at the site and mixed until uniform. In this case, as a mixing method, there are a central mixing method, a road mixing method and the like.
【００１２】土壌凝結硬化剤を土に混合した組成物Ａ１
００重量部に、合成樹脂エマルジョンの希釈液、組成物
ＢをＡの最適含水比になるまで注ぐ。Composition A1 in which a soil hardening agent is mixed with soil
Pour 00 parts by weight of the synthetic resin emulsion diluent B and composition B until the optimum water content ratio of A is reached.
【００１３】路上混合の場合には、通常、スタビライザ
ーを使用する。中央混合方式の場合には、中央プラント
から運搬して、路盤上に混合物を所定の厚さ、形状に敷
きならす。In the case of road mixing, stabilizers are usually used. In the case of the central mixing system, the mixture is transported from the central plant and spread on the roadbed in a predetermined thickness and shape.
【００１４】これら混合物を路盤上に所定の密度に締め
固め舗装を終了する。The mixture is compacted on the roadbed to a predetermined density and the pavement is completed.
【００１５】以下、舗装の構造設計について簡単に説明
する、これは「アスファルト舗装要綱」に準拠して設計
される。The pavement structure design will be briefly described below, which is designed in accordance with the "asphalt pavement guideline".
【００１６】（１）表層と基層の最小厚さ 舗装の構成を決定するには、各層の最小厚さを考慮す
る。交通量の区分毎の表層と基層の合計の最小厚さは、
アスファルト舗装要項の表２．６．２によれば、次の表
１のとおりである。(1) Minimum Thickness of Surface Layer and Base Layer In determining the structure of pavement, the minimum thickness of each layer is considered. The minimum total thickness of the surface layer and base layer for each traffic volume classification is
According to Table 2.6.2 of the asphalt pavement guideline, it is as shown in Table 1 below.
【００１７】[0017]
【表１】 [Table 1]
【００１８】ここで交通区分Ａ、Ｂ、Ｃ、Ｄは次の表２
のように定義されている。Here, the traffic classifications A, B, C and D are shown in Table 2 below.
Is defined as.
【００１９】[0019]
【表２】 [Table 2]
【００２０】（２）舗装の厚さ 舗装の厚さは、路床の設計ＣＢＲと設計交通量の区分に
応じて定まる。ここでＣＢＲとは路床、路盤の支持力を
表わす指数であり、試験荷重強さと標準荷重強さの比
（％）で表わされる。(2) Thickness of pavement The thickness of pavement is determined according to the classification of the roadbed design CBR and the design traffic volume. Here, CBR is an index representing the bearing capacity of the roadbed and roadbed, and is represented by the ratio (%) of the test load strength to the standard load strength.
【００２１】目標とするＴＡ（即ち舗装を全て表層基層
用加熱アスファルト混合物で行なう場合に必要な厚さ）
（ｃｍ）はアスファルト舗装要綱の表２．６．１によれ
ば、次の表３のとおりである。Targeted TA (ie thickness required if all paving is done with hot asphalt mixture for surface substrate)
(Cm) is as shown in Table 3 below according to Table 2.6.1 of the asphalt pavement summary.
【００２２】[0022]
【表３】 [Table 3]
【００２３】（３）若しも、如何なる土でも安定処理等
を実施することによって、設計ＣＢＲを２０以上とする
事が出来と考えるならば、表層と基層の厚さは、表３の
設計ＣＢＲ２０の項に示された厚さをそれぞれ採用すれ
ば、表１の最小厚さよりも大であるから、全ての交通量
・ＣＢＲに対して合格と言うことになる。(3) If it is considered that the design CBR can be set to 20 or more by carrying out the stabilization treatment on any soil, the thickness of the surface layer and the base layer is the design CBR20 of Table 3. If each of the thicknesses shown in the section is adopted, the thickness is larger than the minimum thickness shown in Table 1, so that it can be said to pass all traffic volume / CBR.
【００２４】アスファルト舗装要綱の表２．６．４によ
れば、種々の工法、材料に対する等値換算係数は次の表
４に示すとおりである。ここで等値換算係数とは、各工
法、材料の１ｃｍ厚さが表層基層用加熱アスファルト混
合物の何ｃｍに相当するかを示す値である。According to Table 2.6.4 of the asphalt pavement summary, the equivalent conversion factors for various construction methods and materials are as shown in Table 4 below. Here, the equivalent conversion coefficient is a value indicating how many cm each of the construction methods and materials corresponds to 1 cm in thickness of the hot asphalt mixture for the surface base layer.
【００２５】[0025]
【表４】 [Table 4]
【００２６】要綱の表-２．６．４（即ち前記表４）に
よれば、等値換算係数は、セメント安定処理の場合、下
層路盤では一軸圧縮強さ：１０ｋｇｆ／ｃｍ2の時、等
値換算係数＝０.２５であり、上層路盤では、一軸圧縮
強さ：３０ｋｇｆ／ｃｍ2の時、等値換算係数＝０.５５
である。これをグラフに描いて見ると、尚一層、明らか
に、一軸圧縮強さと等値換算係数とは関係があることが
よくわかる。According to Table-2.6.4 of the summary (that is, Table 4 above), the equivalence conversion factor is such that in the case of cement stabilization, the uniaxial compressive strength of the lower layer roadbed is 10 kgf / cm 2 , etc. The value conversion coefficient is 0.25, and in the upper layer roadbed, when the uniaxial compression strength is 30 kgf / cm 2 , the equivalent conversion coefficient is 0.55.
Is. When this is drawn in a graph, it is clear that the uniaxial compressive strength and the equivalent conversion coefficient are more clearly related.
【００２７】図-１には、セメント安定処理の場合と本
発明の土壌凝結硬化剤による安定処理の場合の二本の線
が書かれている。FIG. 1 shows two lines for the case of cement stabilization and the case of stabilization with the soil hardening agent of the present invention.
【００２８】上記土壌凝結硬化剤は、セメントの欠点を
少なくする為に、特定の添加剤をポルトランドセメント
に混合したものである。The above-mentioned soil hardening agent is a mixture of Portland cement with specific additives in order to reduce the defects of the cement.
【００２９】この結果、普通セメントのコンクリートの
最大の欠点とも言うべき、固化時の乾燥収縮による亀裂
の発生を減少させる事が出来て、セメント安定処理の路
盤よりも、この土壌凝結硬化剤による安定処理の路盤の
方が等値換算係数が大である事が、多くの実績によって
証明された。それと同時に、この土壌凝結硬化剤は、保
水性を持っていて、長期に強度の増進を期待出来る事
も、長い目で見て、等値換算係数に影響する事項であ
る。As a result, it is possible to reduce the generation of cracks due to drying shrinkage at the time of solidification, which should be said to be the biggest drawback of ordinary cement concrete, and it is more stable by this soil setting and hardening agent than the cement stabilization roadbed. Many achievements have proved that the treated roadbed has a larger equivalent conversion factor. At the same time, this soil hardening agent has a water retention property and can be expected to improve the strength for a long period of time, which is a matter that affects the equivalent conversion coefficient in the long run.
【００３０】本発明に使用する「土壌凝結硬化剤」は、
数百の施工例の中から、福岡大学によって追跡試験が実
施され、土壌凝結硬化剤で安定処理した土を材料とし
た、等値換算係数が求められた。その結果の一部を次の
表５に記載する。The "soil setting hardener" used in the present invention is
A follow-up test was carried out by Fukuoka University from hundreds of construction examples, and an equivalent conversion coefficient was obtained using soil that had been stabilized with a soil hardening agent. Some of the results are shown in Table 5 below.
【００３１】[0031]
【表５】 [Table 5]
【００３２】上記表５は、何れも一軸圧縮強さ＝３０ｋ
ｇｆ／ｃｍ2を目標に土壌凝結硬化剤を混合して路盤工
としたもので、等値換算係数は、０.７以上になってい
る。それ故に、図-１の土壌凝結硬化剤安定処理の線は
３０ｋｇｆ／ｃｍ2の時、０.７を通過させている。In Table 5 above, the uniaxial compression strength is 30 k in all cases.
It is a roadbed with a soil hardening agent mixed for the purpose of gf / cm 2. The equivalent conversion coefficient is 0.7 or more. Therefore, the line for stabilizing the soil hardening agent in Figure 1 passes 0.7 at 30 kgf / cm 2 .
【００３３】本発明の「セメント系表層用組成物」は、
この土壌凝結硬化剤によって安定処理した土砂に合成樹
脂エマルジョンを加えて、土砂の粒子の機械的強度を増
大させると共に、土粒子相互の接着を強化するものであ
るから、図-１のセメント安定処理の線上よりは、土壌
凝結硬化剤安定処理の線上にあると考える方が正しいと
判断できる。The "cement-based surface layer composition" of the present invention is
A synthetic resin emulsion is added to the soil stabilized with this soil hardening agent to increase the mechanical strength of the soil particles and to strengthen the mutual adhesion of the soil particles. It can be judged that it is more correct to think that it is on the line of stabilization treatment of the soil coagulation hardener rather than on the line.
【００３４】そこで、本発明の「表層用組成物」の一軸
圧縮強さを幾らにすれば、加熱アスファルト混合物と同
等の、等値換算係数＝１となるかを、図-１のグラフか
ら求めて見ると、土壌凝結硬化剤安定処理の線を延長し
て等値換算係数＝１の線と交わる位置から、一軸圧縮強
さ＝４７ｋｇｆ／ｃｍ2を得る。Then, from the graph of FIG. 1, it was determined whether the uniaxial compressive strength of the "surface layer composition" of the present invention was equivalent to that of the heated asphalt mixture, that is, the equivalent conversion coefficient = 1. As a result, the line for the stabilization treatment of the soil hardening agent is extended to obtain the uniaxial compressive strength = 47 kgf / cm 2 from the position where it intersects with the line with the equivalent conversion factor = 1.
【００３５】故に、１週強度で一軸圧縮強さ＝５０ｋｇ
ｆ／ｃｍ2を、本表層用組成物の目標とすべき強度と定
める。Therefore, the uniaxial compressive strength at 50-week strength is 50 kg.
f / cm 2 is defined as the target strength of the surface layer composition.
【００３６】如何に悪い路床であっても、例えば表５の
工事番号３は、ＣＢＲ＝１.８と最も軟弱な路床を持っ
ているが、そこでも立派に路盤を構築出来る事を示して
いる。この様に路盤を構築して、最後に、表層を掛けて
終わるのである。故に、表層の下地は、常にある支持力
を持った路盤である。この支持力は、表４によると、上
層路盤の粒調砕石或は水硬性粒度調整鉄鋼スラグの品質
規格の欄には修正ＣＢＲ ８０以上となる。この事は、
上層路盤の設計ＣＢＲは、８０以上に相当するＣＢＲで
ある事を物語っていることになる。それ故、道路を設置
する為には、表層の下地は、常に設計ＣＢＲ ２０以上
であると言う事が出来るのである。各交通区分に応じ
て、表層の厚さは、設計ＣＢＲが２０以上の目標とする
ＴＡ（ｃｍ）であることになる。No matter how bad the roadbed is, for example, the construction number 3 in Table 5 has the weakest roadbed with CBR = 1.8, but it shows that the roadbed can be constructed well there. ing. The roadbed is constructed in this way, and finally the surface layer is applied to finish. Therefore, the base of the surface layer is a roadbed that always has a certain bearing capacity. According to Table 4, this supporting force is a corrected CBR of 80 or more in the column of the quality standard of the grain crushed stone or the hydraulic grain size adjusting steel slag of the upper layer roadbed. This thing is
It means that the design CBR of the upper roadbed is a CBR equivalent to 80 or more. Therefore, it can be said that the foundation of the surface layer is always the design CBR 20 or more in order to install the road. According to each traffic division, the thickness of the surface layer is the target TA (cm) where the design CBR is 20 or more.
【００３７】表-３によると、交通区分Ａ交通で設計Ｃ
ＢＲが２０以上の時は、ＴＡは１３ｃｍである。等値換
算係数が１である材料では、１３ｃｍの厚さに表層を掛
ける必要があると言う事である。前述の通り、本発明の
表層用組成物は、等値換算係数を１にする為に、一軸圧
縮厚さを５０ｋｇｆ／ｃｍ2に定めたのである。故に、
本表層の厚さは、１３ｃｍとなる。According to Table-3, traffic category A traffic is designed C
When BR is 20 or more, TA is 13 cm. For a material having an equivalent conversion factor of 1, it is necessary to multiply the thickness of 13 cm by the surface layer. As described above, the uniaxial compression thickness of the surface layer composition of the present invention is set to 50 kgf / cm 2 in order to set the equivalent conversion coefficient to 1. Therefore,
The thickness of this surface layer is 13 cm.
【００３８】本発明の組成物において、土壌凝結硬化剤
の添加量を土砂１００重量部に対して５重量部以上にし
た理由は、前記表５に見られるように、一軸圧縮強さ＝
３０ｋｇｆ／ｃｍ2の路盤の場合にも常に５％以上の添
加率が必要であるからである。土壌凝結硬化剤の添加量
を２０重量部以上にすると、強度が高くなり過ぎ不経済
である。In the composition of the present invention, the reason why the addition amount of the soil hardening agent is 5 parts by weight or more with respect to 100 parts by weight of earth and sand is that the uniaxial compressive strength =
This is because the addition rate of 5% or more is always required even in the case of the roadbed of 30 kgf / cm 2 . When the addition amount of the soil hardening agent is 20 parts by weight or more, the strength becomes too high and it is uneconomical.
【００３９】合成樹脂エマルジョンは比較的高価である
ので、出来るだけ少量の添加で満足できるようにするこ
とが好ましい。現場の土の種類によって添加量が異なる
が、土壌凝結硬化剤の添加範囲５〜２０重量部の範囲で
は、土砂及び土壌凝結硬化剤の合計量１００重量部に対
して、合成樹脂エマルジョンの添加量が１重量部を下廻
ると表層が摩耗に弱くなり、また３重量部を越えて添加
することは経済的に好ましくない。合成樹脂エマルジョ
ンは７〜９重量部の水で希釈することが好ましい。Since the synthetic resin emulsion is relatively expensive, it is preferable to add it as little as possible. The addition amount varies depending on the type of soil at the site, but in the range of addition of the soil hardening agent of 5 to 20 parts by weight, the addition amount of the synthetic resin emulsion is 100 parts by weight of the total amount of soil and soil hardening agent. Is less than 1 part by weight, the surface layer becomes vulnerable to abrasion, and it is economically unfavorable to add more than 3 parts by weight. The synthetic resin emulsion is preferably diluted with 7 to 9 parts by weight of water.
【００４０】[0040]
【実施例】以下実施例に従って本発明を更に詳しく説明
する。The present invention will be described in more detail with reference to the following examples.
【００４１】実施例１及び２ 土壌として関東ロームを用い、土壌凝結硬化剤として ポルトランドセメント ９９重量％ リグニンスルホン酸アルカリ塩 ０.５重量％ 水酸化カルシウム ０.２５重量％ ソーダ灰 ０.２５重量％ からなる組成物を用い、合成樹脂エマルジョンとして三
菱油化（株）社製のアクリル樹脂、アクロナールＭＪ-
３０４２Ｄを使用した。Examples 1 and 2 Kanto loam was used as soil, and Portland cement was used as a soil hardening agent 99% by weight Lignin sulfonic acid alkali salt 0.5% by weight Calcium hydroxide 0.25% by weight Soda ash 0.25% by weight A synthetic resin emulsion made of Mitsubishi Petrochemical Co., Ltd., acrylic resin Acronal MJ-
3042D was used.
【００４２】表６に示す配合割合の土壌及び土壌凝結硬
化剤を混合した混合物Ａに表６に示す配合割合で合成樹
脂エマルジョンを水で希釈した混合物を添加して混練し
た。得られた組成物について室温で強度試験を実施し
た。得られた１週強度及び４週強度の値を表６に示す。
表６には吸水率及び単位体積重量の値も併せて示されて
いる。A mixture of the synthetic resin emulsion diluted with water at the blending ratio shown in Table 6 was added to the mixture A in which the soil and the soil coagulation hardener having the blending ratio shown in Table 6 were mixed and kneaded. A strength test was performed on the obtained composition at room temperature. The values of the 1-week strength and 4-week strength obtained are shown in Table 6.
Table 6 also shows values of water absorption and unit volume weight.
【００４３】[0043]
【表６】 [Table 6]
【００４４】表６の結果によれば、４週強度は、何れも
１週強度の約二倍またはそれ以上となっている。これ
は、１週強度によって、等値換算係数１を定めた経緯か
らすれば、十分に安全側に定められている事になる。According to the results shown in Table 6, the 4-week intensity is about twice the 1-week intensity or more. From the background of setting the equivalence conversion factor of 1 depending on the strength of one week, it means that it is sufficiently set on the safe side.
【００４５】実施例３〜４及び比較例１〜５ 実施例１の場合と同様な土壌、土壌凝結硬化剤及び合成
樹脂エマルジョンを用い、表７に示す配合割合の組成物
を得、これらについて１週強さを測定した。結果を表７
に示す。表７において、合成樹脂エマルジョンの量は組
成物Ａに対する重量％で示されている。Examples 3 to 4 and Comparative Examples 1 to 5 Using the same soil, soil coagulation hardener and synthetic resin emulsion as in Example 1, the composition ratios shown in Table 7 were obtained. Weekly strength was measured. The results are shown in Table 7.
Shown in. In Table 7, the amounts of synthetic resin emulsions are given in% by weight relative to composition A.
【００４６】[0046]
【表７】 [Table 7]
【００４７】表７によれば、比較例１、２、３は、土壌
凝結硬化剤が２０％を越えて、必要以上に強度が出てい
る。According to Table 7, in Comparative Examples 1, 2, and 3, the soil coagulation and hardening agent exceeds 20%, and the strength is more than necessary.
【００４８】比較例４は、樹脂の量が１％以下であっ
て、土粒子を樹脂が包む事が出来ない。In Comparative Example 4, the amount of the resin was 1% or less, and the soil particles could not be wrapped with the resin.
【００４９】比較例５は、土壌凝結硬化剤が５％以下で
あって、強度が不足である。In Comparative Example 5, the amount of the soil hardening agent is 5% or less, and the strength is insufficient.
【００５０】土壌は、千変万化であるから、一慨に限定
する事は出来ないが、関東ローム層を標準として考えて
おけば、一般の土壌は、これよりも物理的強度は平均し
て上位にある筈であるから、先ず、この値よりも経済的
に表層を構築出来ると考えられる。[0050] The soil cannot be limited to a single one because the soil is ever-changing, but if the Kanto loam layer is considered as the standard, the general soil has an average higher physical strength than this. Since it should be, it is thought that the surface layer can be constructed more economically than this value.
【００５１】耐摩耗試験 表層の役割は、交通荷重を分散して下層に伝達する機能
とともに、交通車輌による流動、摩耗ならびにひびわれ
に抵抗し、平坦ですべりにくい路面を確保することであ
る。Abrasion resistance test The role of the surface layer is to secure a flat and non-slip road surface, which has a function of dispersing the traffic load and transmitting it to the lower layer, and also resists flow, wear and cracks caused by the traffic vehicle.
【００５２】実施例３及び４及び比較例４の試料につい
て摩耗試験を実施した。結果を表８に示す。Abrasion tests were performed on the samples of Examples 3 and 4 and Comparative Example 4. The results are shown in Table 8.
【００５３】[0053]
【表８】 [Table 8]
【００５４】表８によれば、コンクリート舗装の一軸圧
縮強度２５０ｋｇｆ／ｃｍ2と比較すると、実施例３及
び４は耐摩耗性に優れているが、合成樹脂エマルジョン
１％以下の比較例４はコンクリートブロックよりも耐摩
耗性が劣っている。According to Table 8, when compared with the uniaxial compressive strength of concrete pavement of 250 kgf / cm 2 , Examples 3 and 4 are excellent in abrasion resistance, but Comparative Example 4 containing 1% or less of synthetic resin emulsion is concrete. Wear resistance is inferior to blocks.
【００５５】[0055]
【発明の効果】本発明の舗装表層用セメント系組成物
は、現地の土砂を主原料として用い、これに比較的少量
の土壌凝結硬化剤及び合成樹脂エマルジョンの希釈液を
配合したものであり、アスファルト舗装に匹敵する強度
及び耐摩耗性を有する。如何なる辺鄙な場所において
も、僅かな薬品類を現地に運ぶだけで、アスファルト舗
装と同等の表層を容易に且つ経済的に構築することがで
きる。EFFECTS OF THE INVENTION The cement-based composition for pavement surface layer of the present invention uses local earth and sand as a main raw material, and is mixed with a relatively small amount of a soil coagulation hardener and a diluent of a synthetic resin emulsion, It has strength and abrasion resistance comparable to asphalt pavement. It is possible to easily and economically construct a surface layer equivalent to asphalt pavement by carrying a small amount of chemicals to any remote place.
【図１】本発明の土壌凝結硬化剤による安定処理の場合
と、従来のセメント安定処理の場合の、一軸圧縮強さと
等値換算係との関係を示すグラフである。FIG. 1 is a graph showing the relationship between the uniaxial compression strength and the equivalence conversion factor in the case of the stabilizing treatment with the soil hardening agent of the present invention and the conventional cement stabilizing treatment.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 17/06 Ｐ 17/44 Ｐ 17/48 Ｐ //(Ｃ０４Ｂ 28/04 14:02 Ｚ 24:18 Ａ 22:06 Ｚ 22:10 24:26） Ｄ Ｃ０９Ｋ 103:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display area C09K 17/06 P 17/44 P 17/48 P // (C04B 28/04 14:02 Z 24 : 18 A 22:06 Z 22:10 24:26) D C09K 103: 00
Claims (1)
７〜９９重量％ （ii） リグニンスルホン酸アルカリ金属塩 １.０〜
０.５重量％ （iii）水酸化カルシウム １.０〜
０.５重量％及び （iv） ソーダ灰 １.０〜
０.５重量％ からなる土壌凝結硬化剤 ５〜２０重量
部 とを混合した組成物Ａ １００重量部に対して （３）合成樹脂エマルジョン１〜３重量部を水で希釈し
た組成物Ｂを、組成物Ａが最適含水比になるまで添加
し、混練したことを特徴とする舗装表層用セメント系組
成物。1. (1) 100 parts by weight of local earth and sand and (2) (i) Portland cement 9
7-99% by weight (ii) Lignin sulfonic acid alkali metal salt 1.0
0.5% by weight (iii) calcium hydroxide 1.0-
0.5 wt% and (iv) soda ash 1.0-
A composition B prepared by diluting 1 to 3 parts by weight of a synthetic resin emulsion with water is added to 100 parts by weight of a composition A mixed with 5 to 20 parts by weight of a soil coagulant hardening agent consisting of 0.5% by weight. A cement-based composition for a pavement surface layer, which is obtained by adding the composition A to an optimum water content ratio and kneading the mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12989594A JP2581897B2 (en) | 1994-05-20 | 1994-05-20 | Cement-based composition for pavement surface layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12989594A JP2581897B2 (en) | 1994-05-20 | 1994-05-20 | Cement-based composition for pavement surface layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07315906A true JPH07315906A (en) | 1995-12-05 |
| JP2581897B2 JP2581897B2 (en) | 1997-02-12 |
Family
ID=15021026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12989594A Expired - Fee Related JP2581897B2 (en) | 1994-05-20 | 1994-05-20 | Cement-based composition for pavement surface layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581897B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009286655A (en) * | 2008-05-29 | 2009-12-10 | Takemoto Oil & Fat Co Ltd | Powdery premixed cement composition for foundation improvement |
-
1994
- 1994-05-20 JP JP12989594A patent/JP2581897B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009286655A (en) * | 2008-05-29 | 2009-12-10 | Takemoto Oil & Fat Co Ltd | Powdery premixed cement composition for foundation improvement |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2581897B2 (en) | 1997-02-12 |
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