JPS637403A - Stable treated road foundation material - Google Patents
Stable treated road foundation materialInfo
- Publication number
- JPS637403A JPS637403A JP14925886A JP14925886A JPS637403A JP S637403 A JPS637403 A JP S637403A JP 14925886 A JP14925886 A JP 14925886A JP 14925886 A JP14925886 A JP 14925886A JP S637403 A JPS637403 A JP S637403A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- present
- crushed stone
- cement
- particle size
- 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
- 239000000463 material Substances 0.000 title claims description 21
- 239000004567 concrete Substances 0.000 claims description 25
- 239000004568 cement Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- -1 crusher run Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はセメントコンクリート廃棄物を破砕により切込
砕石あるいは粒度調整砕石などとした（以下コンクリー
ト再生骨材という）ものに生コンクリート工場などで未
硬化コンクリート洗浄の浄排水中のスラッジ（以下生コ
ンクリート廃水スラッジという）と高炉水滓粉末を結合
材として混合締固めた固化物に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is aimed at converting cement concrete waste into cut crushed stone or particle size-adjusted crushed stone (hereinafter referred to as concrete recycled aggregate) by crushing it at a ready-mixed concrete factory or the like. This relates to a solidified product obtained by mixing and compacting sludge in clean water from cleaning hardened concrete (hereinafter referred to as fresh concrete wastewater sludge) and blast furnace slag powder as a binder.
つまり本発明に係る主原料の大半が産業廃棄物からなる
ものであるにも係わらず充分なる圧縮強度を有し通常の
セメントや石灰等からなる安定処理材に匹敵する安定処
理路盤などとしてもちいる固化物の製造方法を提供する
ものである。In other words, even though most of the main raw materials used in the present invention are made of industrial waste, they have sufficient compressive strength and can be used as stabilized roadbeds comparable to stabilized materials made of ordinary cement, lime, etc. A method for producing a solidified product is provided.
（従来技術）
ところで従来産業廃棄物の一つとして建設工事に従って
発生する廃棄物即ち建設廃棄物、中でもセメントコンク
リート廃棄物が路盤材用骨材として再利用しうるちので
あることについては一応知られてはいるが、しかしこの
ものを単独で使用するにおいては、未だ通常の切込砕石
や粒度調整砕石などの路盤材の代替用としてその一部が
再利用されているに過ぎず、その大半は、廃棄埋立処分
されているのが現状である。(Prior art) By the way, it has not been known that waste generated during construction work as one type of industrial waste, that is, construction waste, and in particular cement concrete waste, can be reused as aggregate for roadbed materials. However, when using this material alone, only a portion of it is still being reused as a substitute for roadbed materials such as ordinary incised crushed stone or granulated crushed stone, and the majority of it is Currently, they are disposed of in landfills.
（問題を解決するための手段）
これらのことから本発明者らは、産業廃棄物であるセメ
ントコンクリート廃棄物を破砕することにより切込砕石
あるいは粒度調整砕石などとした再生骨材に、同じ〈産
業廃棄物である生コンクリート工場などで発生するコン
クリート洗浄廃水からのスラッジと高炉水滓粉末とを結
合材として添加混合したものが水和反応によって固化し
、耐久性、強度、安定性に優れた舗装路盤材などになる
ことの知見を得−て本発明を完成した。(Means for Solving the Problems) Based on the above, the present inventors used the same A mixture of industrial waste sludge from concrete washing wastewater generated at ready-mixed concrete factories and blast furnace water slag powder as a binder solidifies through a hydration reaction, resulting in excellent durability, strength, and stability. The present invention was completed based on the knowledge that the material could be used as a paving roadbed material.
以下、本発明について詳述する。The present invention will be explained in detail below.
ここにコンクリート廃棄物とは、セメントコンクリート
舗装道路の破壊により取り壊し再舗装をする際や、道路
舗装下の埋設工事の際、ビルなどセメントコンクリート
構築物の取壊し等の際などに生じるセメントコンクリー
ト廃棄物をいう。Concrete waste here refers to cement concrete waste that is generated when demolishing and resurfacing cement-concrete paved roads, burying them under road pavement, and demolishing cement-concrete structures such as buildings. say.
また、コンクリート再生骨材とは、セメントコンクリー
トの廃棄塊をインペラーブレーカ−やショークラッシャ
ー等の破砕機で所定の最大寸法以下例えば５０１１フル
イ通過分となるように破砕したもの、あるいはそれを道
路用粒度調整砕石の粒度範囲に、粒度調整等を行ったも
のなどをいう。In addition, recycled concrete aggregate is waste cement concrete aggregate that has been crushed using a crusher such as an impeller breaker or a show crusher to a size that is less than the specified maximum size, such as the amount that can pass through a 5011 sieve, or it can be crushed to a size that can pass through a 5011 sieve. Refers to particles whose particle size has been adjusted within the particle size range of adjusted crushed stone.
更に、生コンクリート廃水スラッジとは、生コンクリー
ト工場やセメント二次製品工場等において、プラントミ
キサや運搬車等を洗浄したり、あるいは戻りコンクリー
トからの骨材回収のために洗浄した際に発生する廃水か
ら回収したセメント永和物を主成分とするスラッジで、
例えば、強熱減量１１〜１７％、Ｓｉ０□ ２４〜３１
％、Ａβ２０３５〜６．４％、Ｆ ｅｚ Ｃｈ １．８
〜３．０％、Ｃａ０４６〜５２％、ＭｇＯ１，０〜１．
３％、ＳＯ。Furthermore, ready-mixed concrete wastewater sludge is the wastewater generated when cleaning plant mixers, transport vehicles, etc., or when cleaning aggregates from returned concrete at ready-mixed concrete factories and secondary cement product factories. Sludge whose main component is cement permanent material collected from
For example, ignition loss 11-17%, Si0□ 24-31
%, Aβ2035-6.4%, Fez Ch 1.8
~3.0%, Ca046~52%, MgO1.0~1.
3%, SO.
０．９〜１．３％からなるような組成物によるもので、
それがスラリー状やペースト状若しくはケーキ状のもの
からなるものをいう。Based on a composition consisting of 0.9 to 1.3%,
It refers to something that is in the form of a slurry, paste, or cake.
そして高炉水滓粉末とは、高炉スラグを急冷してガラス
化させたものを粉末状にしたもので、たとえばＳｉＯ□
３２〜３４％、Ａβ、ｏ、１３〜１６％、Ｆｅｚ Ｏ３
０，４〜１．０％、Ｃａ０４０〜４２％、Ｍｇ０６〜８
％からなるような組成物のもので粉末度（ブレーン）が
２５００〜８０００ｃｒＡ ／ ｇからなるようなもの
をいう。Blast furnace slag powder is a powder made by rapidly cooling and vitrifying blast furnace slag, such as SiO□
32-34%, Aβ, o, 13-16%, Fez O3
0.4-1.0%, Ca040-42%, Mg06-8
% and has a fineness (blane) of 2,500 to 8,000 crA/g.
本発明を以下実施例を挙げて更に詳細に説明する。The present invention will be described in more detail below with reference to Examples.
実施例１
ここでは通常の機械的安定処理材による粒度調整砕石と
本発明の固化物との支持力を比較するために表−１に示
す累加粒度分布によるものについてアスファルト舗装要
綱にもとづく修正Ｃ，Ｂ。Example 1 Here, in order to compare the bearing capacity of the crushed stone whose particle size is adjusted by ordinary mechanically stabilized material and the solidified material of the present invention, modification C, based on the asphalt pavement guidelines, was carried out for the one with the cumulative particle size distribution shown in Table 1. B.
Ｒ試験を実施した。その結果は表−２に示す通りである
。An R test was conducted. The results are shown in Table-2.
表−１
（次頁へつづく）
スフアルド舗装要綱で２０ｋｇ／ｃｆｌｌ又は３０ｋｇ
／ａｊ以上となっているが本発明の固化物はそれらの基
準値を７日で充分に土建るものである。Table-1 (Continued to next page) 20kg/cfll or 30kg according to Sfardo pavement guidelines
/aj or more, but the solidified product of the present invention can sufficiently overcome these standard values in 7 days.
実施例２
ここでは本発明の混合物の原料配合を種々に変えたもの
についてＪＩＳ Ａ ５０１５による一軸圧縮強度
試験を実施した。Example 2 Here, a uniaxial compressive strength test according to JIS A 5015 was conducted on mixtures of the present invention with various raw material compositions.
その結果は表−３に示す通りである。The results are shown in Table-3.
（次頁へつづく）
ジと高炉水滓粉末からなる本発明に係わる結合材を用い
た混合物は、結合材をそれぞれ単独で使用することより
も相乗効果は著しく優れた強度が得られることが判る。(Continued on next page) It can be seen that the mixture using the binder of the present invention, which is composed of carbon dioxide and blast furnace water slag powder, has a synergistic effect and can provide significantly superior strength compared to using each binder alone. .
しかも両者の配合比はコンクリート廃水スラッジ：高炉
水滓粉末によるものが約６０〜３５％：４０へ・６５％
の範囲にあることが望ましく、更にはそれが約５０ ：
５０であるようなものがより望ましい。Furthermore, the mixing ratio of the two is approximately 60 to 35%: concrete wastewater sludge: blast furnace water slag powder: 40 to 65%.
It is preferable that the range is about 50:
50 is more desirable.
またコンクリート再生骨材に対する当該結合材の添加量
は、多ければ多いほど強度は増大するが、実用的には通
常のセメント安定処理材によるものと同様４〜５％程度
とすることでよい。Further, the greater the amount of the binder added to the recycled concrete aggregate, the higher the strength, but in practice it may be about 4 to 5%, similar to the case with ordinary cement stabilizing materials.
実施例３
ここでは本発明に係わる固化物との比較において、粒度
調整砕石に安定処理用結合材として本発明に係わる結合
材を用いたものとについて、ＪＩＳ Ａ ５０１５
による一軸圧縮強度試験を実施した。その結果は表−４
に示す通りである。Example 3 Here, in comparison with the solidified material according to the present invention, a case where the binder according to the present invention is used as a binder for stabilizing particle size-adjusted crushed stone is compared with JIS A 5015.
An unconfined compressive strength test was carried out. The results are in Table-4
As shown.
（次頁へつづく）
であることが判る。これは、本発明の固化物は、コンク
リート再生骨材が単なる骨材としての役割を果たしてい
るだけでなく、その中に含まれるセメント水和物や未水
和物が本発明に係わる結合材によるものと反応して水硬
性を高めていることの効果を現しているものということ
ができる。(Continued on next page) It turns out that. This means that in the solidified product of the present invention, the concrete recycled aggregate not only plays a role as a mere aggregate, but also that the cement hydrates and unhydrates contained therein are due to the binder according to the present invention. It can be said that this shows the effect of increasing hydraulic properties by reacting with objects.
ところで本発明の混合物の路盤材による施工は、慣用の
技術的手段で実施することができる。By the way, the application of the mixture of the present invention to a roadbed material can be carried out by conventional technical means.
ところでまた、本発明に係わるコンクリート再生骨材に
は、砕石やクラッシャーランや、砂等による補足材料の
添加を防げない。However, the recycled concrete aggregate according to the present invention cannot be prevented from being supplemented with supplementary materials such as crushed stone, crusher run, and sand.
（発明の効果）
これらのことから本発明に係わる固化物は強度、安定性
において極めて優れたものであり、路盤材の中でも本来
それ程高い支持力、強度が要求されていない下層用によ
る路盤材はもとより、上層用における路盤材としても充
分に適する強度特性を有するものである。(Effects of the Invention) From the above, the solidified material according to the present invention is extremely excellent in strength and stability, and among roadbed materials, roadbed materials for lower layers, which do not originally require such high bearing capacity and strength, are suitable. In addition, it has strength characteristics that are sufficiently suitable as a roadbed material for upper layers.
ところで本発明の固化物の強度の発現効果は、その主原
料であるコンクリート再生骨材や、スラッジや、高炉水
滓をそれぞれ単独で使用するにおいては、水和反応（水
硬性）を起こすことは殆どないのであるが、三者を混合
することにより始めて有効な水硬性を発揮するものであ
る。By the way, the strength development effect of the solidified product of the present invention is that when the main raw materials, such as concrete recycled aggregate, sludge, and blast furnace water slag, are used alone, hydration reactions (hydraulicity) do not occur. Although there are very few, effective hydraulic properties can only be achieved by mixing the three.
また、本発明に係わる主原料は、その大半が産業廃棄物
を利用するものであって、しがも本発明の固化物を得る
ための工程が単に破砕、粉砕、混合といったことの手段
に過ぎぬものであることから、ここに何ら特別の装置を
必要とせず、消費エネルギーもわずかなものであって、
経済性や、省責源化といったことにとっても極めてすぐ
れたものであるということができる。Furthermore, most of the main raw materials used in the present invention are made from industrial waste, and the process for obtaining the solidified product of the present invention is merely a means of crushing, pulverizing, and mixing. Since it is a natural product, no special equipment is required, and the energy consumption is small.
It can be said that it is extremely excellent in terms of economy and resource savings.
それに本発明に係わる固化物は、通常のセメントや石灰
系による安定処理路盤材によるものに比べて、若干遅硬
性によるものであることがら通常硬化初期において屡々
見られる収縮クランクでの抑制効果の大きいものである
ということができる。In addition, the solidified material according to the present invention has a slightly slower hardening property than that of stabilized roadbed materials made from ordinary cement or lime, so it has a large suppressing effect on shrinkage cranks that are often seen in the early stage of normal hardening. It can be said that it is a thing.
それにまた、本発明に係わるコンクリート再生骨材によ
るものは、通常の骨材によるものに比べて多孔質である
ことや、水分を含んだスラッジを用いていることなどか
ら締固め特性において、含水量の変動に対する影響を受
けに＜＜、施工管理がやりやすく、省力化の面でも極め
て優れたものであるということができる。In addition, concrete using recycled aggregates according to the present invention is more porous than ordinary aggregates and uses sludge containing water, so the compaction properties are lower than water content. It can be said that it is easy to manage construction and is extremely superior in terms of labor saving due to the influence of fluctuations in .
Claims (1)
石あるいは粒度調整砕石としたものにコンクリート洗浄
廃水から回収したスラッジと高炉水滓粉末とを結合材と
して混合することよりなる安定処理路盤材。This is a stabilized roadbed material made by crushing cement concrete waste and changing the particle size to cut crushed stone or particle size adjusted crushed stone, and mixing it with sludge recovered from concrete washing wastewater and blast furnace slag powder as a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14925886A JPS637403A (en) | 1986-06-25 | 1986-06-25 | Stable treated road foundation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14925886A JPS637403A (en) | 1986-06-25 | 1986-06-25 | Stable treated road foundation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS637403A true JPS637403A (en) | 1988-01-13 |
| JPH0353401B2 JPH0353401B2 (en) | 1991-08-15 |
Family
ID=15471321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14925886A Granted JPS637403A (en) | 1986-06-25 | 1986-06-25 | Stable treated road foundation material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS637403A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02266003A (en) * | 1989-04-04 | 1990-10-30 | Nippon Steel Corp | Hydraulic setting roardbed material |
| JPH04203105A (en) * | 1990-11-30 | 1992-07-23 | Teruo Mori | Road paving material |
-
1986
- 1986-06-25 JP JP14925886A patent/JPS637403A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02266003A (en) * | 1989-04-04 | 1990-10-30 | Nippon Steel Corp | Hydraulic setting roardbed material |
| JPH04203105A (en) * | 1990-11-30 | 1992-07-23 | Teruo Mori | Road paving material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0353401B2 (en) | 1991-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |