JPH04114936A - Soft kneaded concrete slurry for paving and method for paving concrete - Google Patents

Soft kneaded concrete slurry for paving and method for paving concrete

Info

Publication number
JPH04114936A
JPH04114936A JP22846090A JP22846090A JPH04114936A JP H04114936 A JPH04114936 A JP H04114936A JP 22846090 A JP22846090 A JP 22846090A JP 22846090 A JP22846090 A JP 22846090A JP H04114936 A JPH04114936 A JP H04114936A
Authority
JP
Japan
Prior art keywords
cement
coarse aggregate
unit
weight
paving
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
Application number
JP22846090A
Other languages
Japanese (ja)
Other versions
JP2965340B2 (en
Inventor
Masaaki Tsuji
正哲 辻
Natsuya Watanabe
夏也 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Cement Co Ltd
Original Assignee
Sumitomo Cement Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Cement Co Ltd filed Critical Sumitomo Cement Co Ltd
Priority to JP22846090A priority Critical patent/JP2965340B2/en
Publication of JPH04114936A publication Critical patent/JPH04114936A/en
Application granted granted Critical
Publication of JP2965340B2 publication Critical patent/JP2965340B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Road Paving Structures (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE:To improve surface abrasion strength by kneading cement with a coarse aggregate at a specific unit coarse aggregate volume ratio and a fine aggregate at a specified ratio of unit fine aggregate weight to unit cement weight, a water reducing agent and water and providing a cellular mortar with high fluidity. CONSTITUTION:A coarse aggregate such as crushed stone having >=0.8 unit coarse aggregate volume ratio (a ratio of the unit coarse aggregate weight to the mass of unit coarse aggregate volume) and >=40mm maximum grain diameter, a fine aggregate such as river sand having 0-2.0 ratio of the unit fine aggregate weight to the unit cement weight, water in an amount of 25-50wt.% based on the cement, a water reducing agent, an air-entraining(AE) admixture, a fluidizing agent, etc., are added and mixed with cement such as super-quick hardening cement to provide a paving cellular soft kneaded concrete slurry in which mortar has high fluidity. The resultant concrete slurry is then placed in a prescribed paving area to settle the mortar component, distribute and harden the coarse aggregate mainly on the surface of a concrete slurry layer. Thereby, a concrete pavement a surface layer with a high abrasion strength and excellent friction coefficient is obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、舗装用軟練りコンクリートスラリーおよびコ
ンクリート舗装方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a soft concrete slurry for paving and a concrete paving method.

更に詳しく述べるならば、本発明は、大型舗装施工機械
を必要とせずに、耐磨耗性の高いコンクリート舗装を可
能にする舗装用軟練りコンクリートスラリーおよび、そ
れを用いるコンクリート舗装方法に関するものである。
More specifically, the present invention relates to a soft concrete slurry for paving that enables concrete pavement with high wear resistance without the need for large-scale pavement construction machines, and a concrete paving method using the same. .

〔従来の技術〕[Conventional technology]

従来コンクリート舗装のためには、5cm以下のスラン
プを有する硬練りコンクリートスラリーを用いてこれを
振動、又は転圧などにより強く締めかため、大型フィニ
ッシャ−を用いて仕上げる施工法が一般に用いられてい
た。
Conventionally, the construction method used for concrete pavement was to use hardened concrete slurry with a slump of 5 cm or less, compact it strongly by vibration or compaction, and finish using a large finisher. .

しかしながら、硬練りコンクリートスラリーを用いる場
合、打ち込みおよび仕上げの作業性が不良であり、この
ために大型フィニッシャ−の使用が必要となるという問
題があった。また、通常の軟練りコンクリートスラリー
を舗装用に用いると、得られるコンクリート層表面の摩
擦係数が低く、従って走行車輛の安全性を低下すること
、および耐磨耗性が低く、その耐久性が低いことなどの
問題があった。
However, when hard mixed concrete slurry is used, there is a problem in that the workability of pouring and finishing is poor, which necessitates the use of a large-sized finisher. Furthermore, when ordinary soft concrete slurry is used for paving, the resulting concrete layer surface has a low coefficient of friction, which reduces the safety of vehicles traveling on it, and it also has low abrasion resistance and low durability. There were other problems.

〔発明が解決しようとする課題] 本発明は、作業性が良好で、得られるコンクリート層表
面の耐磨耗性の高い舗装用軟練りコンクリートスラリー
および、それを用いるコンクリート舗装方法を提供しよ
うとするものである。
[Problems to be Solved by the Invention] The present invention aims to provide a soft concrete slurry for paving that has good workability and high abrasion resistance on the surface of the resulting concrete layer, and a concrete paving method using the same. It is something.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の舗装用軟練りコンクリートスラリーは、セメン
ト、骨材、減水剤、水、および空気泡を含め、単位粗骨
材容積比(単位粗骨材重量の、粗骨材の単位容積質量に
対する比)が0.8以上であり、かつ単位細骨材重量の
単位セメント重量に対する比(S/C)がO〜2.0で
あって、モルタル分が高い流動性を有することを特徴と
する舗装用軟練りコンクリートスラリー。
The soft concrete slurry for pavement of the present invention contains cement, aggregate, water reducing agent, water, and air bubbles, and contains a unit coarse aggregate volume ratio (ratio of unit coarse aggregate weight to unit volume mass of coarse aggregate). ) is 0.8 or more, the ratio (S/C) of unit fine aggregate weight to unit cement weight is O to 2.0, and the mortar component has high fluidity. Soft concrete slurry for use.

また、本発明のコンクリート舗装方法は、上記舗装用軟
練りコンクリートスラリーを舗装域内に打ち込み、その
モルタル分を下方に沈下させることにより、粗骨材を主
としてコンクリートスラリー層の表面部分に分布させて
固化することを特徴とするものである。
Furthermore, in the concrete paving method of the present invention, the above-mentioned soft concrete slurry for paving is poured into the paving area, and the mortar portion thereof is allowed to sink downward, thereby distributing the coarse aggregate mainly on the surface portion of the concrete slurry layer and solidifying it. It is characterized by:

本発明のコンクリートスラリー、および舗装方法に用い
られるセメントの種類に格別の制限はなく舗装用に適し
たものから選択することができる。
The type of cement used in the concrete slurry and paving method of the present invention is not particularly limited, and can be selected from those suitable for paving.

一般には舗装工事時間の短縮のために超早強セメント、
速硬性セメント、又は超速硬セメントを用いることが好
ましい。一般に、水のセメントに対する重量比は25%
〜50%であることが好ましい。
Generally, ultra-early strength cement is used to shorten pavement construction time.
Preferably, a fast-hardening cement or a super-fast-hardening cement is used. Generally, the weight ratio of water to cement is 25%
It is preferable that it is 50%.

本発明に用いられる骨材は、細骨材および粗骨材を包含
し、粗骨材が必須成分材料として用いられる。本発明に
用いられる粗骨材は従来のコンクリートに用いられるも
のであればよく、一般に砂利、砕石などが用いられる。
The aggregate used in the present invention includes fine aggregate and coarse aggregate, with coarse aggregate being used as an essential component material. The coarse aggregate used in the present invention may be any material used in conventional concrete, and gravel, crushed stone, etc. are generally used.

このような粗骨材としては、最大粒径40mm以下のも
のが好ましい。
Such coarse aggregate preferably has a maximum particle size of 40 mm or less.

細骨材も、従来のコンクリートに用いられる川砂などで
あればよく、その粒径は、粗粒率として2〜3%である
ことが好ましい。
The fine aggregate may also be river sand used in conventional concrete, and its particle size is preferably 2 to 3% as a coarse particle ratio.

本発明に用いられる減水剤も、従来のコンクリ−1・に
用いられているものから選ぶことができ、例えば減水剤
、AE剤、高性能減水剤、流動化剤、又は凝結調整剤な
どを用いることができる。減水剤の添加は、得られるコ
ンクリートスラリーの流動性を高め、モルタルのプリー
ジングを小さくするために有効である。
The water reducing agent used in the present invention can also be selected from those used in conventional concrete, such as a water reducing agent, an AE agent, a high performance water reducing agent, a fluidizing agent, or a setting modifier. be able to. Addition of a water reducing agent is effective for increasing the fluidity of the resulting concrete slurry and reducing mortar plucking.

本発明のコンクリートスラリーは、軟練りコンクリート
スラリーであって、その水含有重量のセメント含有重量
に対する比(W/C)は、一般に前述のように25%〜
50%であるが、細骨材重量のセメント重量に対する比
(S/C)は0〜2.0である。比S/Cが2.0より
大きくなると、充填率の低下や、強度低下、施工性不良
などの不都合を生ずる。
The concrete slurry of the present invention is a soft concrete slurry, and the ratio of water content weight to cement content weight (W/C) is generally 25% to 25% as described above.
50%, but the ratio of fine aggregate weight to cement weight (S/C) is 0 to 2.0. When the ratio S/C is greater than 2.0, disadvantages such as a decrease in filling rate, decrease in strength, and poor workability occur.

という不都合を生ずる。This causes an inconvenience.

また、本発明のコンクリートスラリーに用いられる粗骨
材の量は、単位粗骨材重量の、粗骨材単位容積質量に対
する比、すなわち、単位粗骨材容積比が、0.8以上に
なるようにすればよい。この単位粗骨材容積比が0.8
未満のときは、得られるコンクリート層の表面部分に分
布する粗骨材の量が不十分になり、このため、コンクリ
ート層の耐磨耗性および摩擦係数が不十分となる。
Further, the amount of coarse aggregate used in the concrete slurry of the present invention is such that the ratio of the unit coarse aggregate weight to the coarse aggregate unit volume mass, that is, the unit coarse aggregate volume ratio, is 0.8 or more. Just do it. This unit coarse aggregate volume ratio is 0.8
When it is less than 1, the amount of coarse aggregate distributed on the surface portion of the resulting concrete layer will be insufficient, and therefore the abrasion resistance and friction coefficient of the concrete layer will be insufficient.

本発明の軟練りコンクリートスラリーにおいて、そのモ
ルタル分は、高い流動性を有することが好ましい。この
ようなモルタル分は、コンクリートスラリーが所定舗装
域内に打ち込まれたとき、速かに下方に沈下し、それに
よってコンクリート層の表面部分に多量の粗骨材を、分
布させ、これらの粗骨材粒子間を、比較的軟質のモルタ
ル分によって充填することができる。
In the soft concrete slurry of the present invention, the mortar component preferably has high fluidity. When the concrete slurry is poured into the designated paved area, this mortar component quickly sinks downward, thereby distributing a large amount of coarse aggregate on the surface of the concrete layer, and distributing these coarse aggregates. The spaces between the particles can be filled with relatively soft mortar.

本発明方法において、上記の本発明の舗装用軟練りコン
クリートスラリーを、所定の舗装域内に打ち込み、その
モルタル分を下方に沈下させ、それによって、粗骨材を
主としてコンクリートスラリー層の表面部分に分布させ
、この状態でコンクリートを固化する。
In the method of the present invention, the above-mentioned soft concrete slurry for paving of the present invention is poured into a predetermined paving area, and the mortar portion thereof is allowed to sink downward, thereby distributing coarse aggregate mainly to the surface portion of the concrete slurry layer. Let the concrete harden in this state.

このようにすることにより、得られるコンクリート層の
表面部分に粗骨材が均一に分布することになり、この粗
骨材粒子の間隙が、比較的軟質のモルタル分により充填
されるようになる。従って、本発明方法により得られた
コンクリート層表面は高い耐磨耗性と良好な摩擦係数を
有する。また、本発明方法によるコンクリート舗装には
、振動や転圧による締めかため操作や大型フィニッシャ
−による仕上げは必要がない。
By doing so, the coarse aggregate is uniformly distributed on the surface of the resulting concrete layer, and the gaps between the coarse aggregate particles are filled with relatively soft mortar. Therefore, the surface of the concrete layer obtained by the method of the present invention has high wear resistance and a good coefficient of friction. Further, concrete pavement according to the method of the present invention does not require compaction operations using vibration or rolling pressure, or finishing using a large finisher.

〔実施例〕〔Example〕

本発明を実施例により更に説明する。 The present invention will be further explained by examples.

1〜3および 六 1 実施例1〜3および比較例1の各々において、下記材料
を第1表に示された組成の軟練りコンクリートスラリー
を調製した。
1 to 3 and 6 1 In each of Examples 1 to 3 and Comparative Example 1, soft concrete slurries having the compositions shown in Table 1 were prepared using the following materials.

水   :水道水 セメント:超速硬セメント(住人セメント社製)細骨材
 :鬼怒用産川砂 粗粒率72.55%、比重: 2.60粗骨材 :山梨
県産 砕石 最大粒径=20胴、粗粒率: 6.49、比重:2.6
5、単位容積重量:1561kg/n(減水剤 二山陽
国策パルプ社製、商標:サンフローPS このコンクリートスラリーを、所定寸法の型枠に常法に
より打ち込み、材令1日まで室! (20±2°C)の
恒温寮内で湿潤養生を施し、材令1日で脱型し、試験材
令まで20±1°Cの水中養生を施した。
Water: Tap water Cement: Ultra-fast hardening cement (manufactured by Susumu Cement Co., Ltd.) Fine aggregate: Kinu local river sand coarse grain ratio 72.55%, specific gravity: 2.60 Coarse aggregate: Crushed stone from Yamanashi Prefecture Maximum particle size = 20 barrels , Coarse particle ratio: 6.49, Specific gravity: 2.6
5. Unit volume weight: 1561 kg/n (Water reducer Manufactured by Nisanyo Kokusaku Pulp Co., Ltd., Trademark: Sunflow PS) Pour this concrete slurry into a formwork of the specified dimensions using a conventional method, and leave it until the first day of construction! (20± Humid curing was performed in a constant temperature dormitory at 2°C), demolded after 1 day of age, and water curing at 20±1°C until the age of the test material.

得られたコンクリート供試体に下記の試験を施した。The following tests were performed on the obtained concrete specimens.

(イ)耐磨耗試験 供試体(10xlOx45印)をコンクリートカッター
により2分し、各供試体表面が水平になるように、試験
域に固定し、この表面上で、スパイクタイヤを1.2 
kgHの荷重下に22Orpmの回転速度で回転させ、
10分間供試体表面を磨耗した。このときの磨耗深さを
測定した。
(a) Abrasion resistance test specimen (marked 10xlOx45) was divided into two parts using a concrete cutter, and fixed in the test area so that the surface of each specimen was horizontal.
Rotate at a rotation speed of 22 Orpm under a load of kgH,
The surface of the specimen was abraded for 10 minutes. The depth of wear at this time was measured.

(ロ)曲げ強度 JIS A 1106により測定した。(b) Bending strength Measured according to JIS A 1106.

(ハ)圧縮強度 JIS A 1114により測定した。(c) Compressive strength Measured according to JIS A 1114.

(ニ)摩擦係数 供試体の湿潤状態の表面上にゴム板を載置し、その上に
2kgの重りを載置し、ゴム板を、バネ秤りを用いて引
張り、摩擦係数を算出した。
(d) Coefficient of Friction A rubber plate was placed on the wet surface of the specimen, a 2 kg weight was placed on it, and the rubber plate was pulled using a spring scale to calculate the coefficient of friction.

各試験結果を第2表に示す。The results of each test are shown in Table 2.

第1表 第2表 〔発明の効果〕 本発明の舗装用軟練りコンクリートスラリーは、その打
ち込みが容易であって、これを用いる本発明方法により
、表面磨耗強度が高く、摩擦係数が十分であって、しか
も満足できる曲げ強度、および圧縮強度を有するコンク
リート層の舗装が可能になった。
Table 1 Table 2 [Effects of the Invention] The soft concrete slurry for pavement of the present invention is easy to pour, and the method of the present invention using the slurry has high surface abrasion strength and a sufficient coefficient of friction. Furthermore, it has become possible to pave a concrete layer with satisfactory bending strength and compressive strength.

Claims (1)

【特許請求の範囲】 1、セメント、骨材、減水剤、水および空気泡を含み単
位粗骨材容積比(単位粗骨材重量の、単位粗骨材容積質
量に対する比)が、0.8以上であり、かつ単位細骨材
重量の単位セメント重量の比が0〜2.0であって、モ
ルタル分が高い流動性を有することを特徴とする舗装用
軟練りコンクリートスラリー。 2、前記セメントが超早強セメント、又は超速硬セメン
トである、請求項1記載のコンクリートスラリー。 3、請求項1に記載の軟練りコンクリートスラリーを舗
装域内に打ち込み、そのモルタル分を下方に沈下させる
ことにより粗骨材を、主としてコンクリートスラリー層
の表面部分に分布させて固化することを特徴とするコン
クリート舗装方法。 4、前記軟練りコンクリートスラリー中のセメントが超
早強セメント又は超速硬セメントであって、前記固化が
急速に達成される、請求項3に記載の舗装方法。
[Claims] 1. Contains cement, aggregate, water reducing agent, water and air bubbles, and has a unit coarse aggregate volume ratio (ratio of unit coarse aggregate weight to unit coarse aggregate volume mass) of 0.8. A soft concrete slurry for paving having the above properties, wherein the ratio of the unit weight of cement to the weight of fine aggregate is 0 to 2.0, and the mortar component has high fluidity. 2. The concrete slurry according to claim 1, wherein the cement is an ultra-early strength cement or an ultra-rapid hardening cement. 3. The soft concrete slurry according to claim 1 is poured into the paved area, and the mortar portion thereof is allowed to sink downward, thereby distributing and solidifying the coarse aggregate mainly on the surface portion of the concrete slurry layer. concrete paving method. 4. The paving method according to claim 3, wherein the cement in the soft concrete slurry is an ultra-early strength cement or an ultra-rapid hardening cement, and the solidification is rapidly achieved.
JP22846090A 1990-08-31 1990-08-31 Soft-mixed concrete slurry for pavement and concrete pavement method Expired - Fee Related JP2965340B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22846090A JP2965340B2 (en) 1990-08-31 1990-08-31 Soft-mixed concrete slurry for pavement and concrete pavement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22846090A JP2965340B2 (en) 1990-08-31 1990-08-31 Soft-mixed concrete slurry for pavement and concrete pavement method

Publications (2)

Publication Number Publication Date
JPH04114936A true JPH04114936A (en) 1992-04-15
JP2965340B2 JP2965340B2 (en) 1999-10-18

Family

ID=16876836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22846090A Expired - Fee Related JP2965340B2 (en) 1990-08-31 1990-08-31 Soft-mixed concrete slurry for pavement and concrete pavement method

Country Status (1)

Country Link
JP (1) JP2965340B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114133179A (en) * 2021-11-02 2022-03-04 水利部新疆维吾尔自治区水利水电勘测设计研究院 High-strength concrete gravel plate and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114133179A (en) * 2021-11-02 2022-03-04 水利部新疆维吾尔自治区水利水电勘测设计研究院 High-strength concrete gravel plate and preparation method thereof

Also Published As

Publication number Publication date
JP2965340B2 (en) 1999-10-18

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