JPS60161751A - Method of crushing construction using expansible crushing agent - Google Patents
Method of crushing construction using expansible crushing agentInfo
- Publication number
- JPS60161751A JPS60161751A JP1577684A JP1577684A JPS60161751A JP S60161751 A JPS60161751 A JP S60161751A JP 1577684 A JP1577684 A JP 1577684A JP 1577684 A JP1577684 A JP 1577684A JP S60161751 A JPS60161751 A JP S60161751A
- Authority
- JP
- Japan
- Prior art keywords
- crushing
- heating source
- hole
- crushing agent
- heat
- 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
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Disintegrating Or Milling (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】
本発明は、岩石やコンクリート構造物を静的に破砕する
膨張性破砕剤を用いた破砕工法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crushing method using an expansive crushing agent for statically crushing rocks and concrete structures.
従来、岩盤、岩石やコンクリート構造物等の破砕、解体
作業には、火薬や大型機械類が用いられてきたが、都市
あるいはその周辺で作業を行なうために騒音、振動、粉
塵、飛石などが少ない安全な破砕工法の開発が要望され
ていた。そこで開発されたのが石灰系無機化合物を主成
分とする膨張性破砕剤の水和反応による体積膨張現象を
利用し、岩石、コンクリート等を破砕する静的な破砕工
法である。Traditionally, explosives and large machinery have been used for crushing and demolition of bedrock, rocks, concrete structures, etc., but since the work is carried out in or around cities, there is less noise, vibration, dust, and flying stones. There was a demand for the development of a safe crushing method. Therefore, a static crushing method was developed to crush rocks, concrete, etc. by utilizing the volume expansion phenomenon caused by the hydration reaction of an expansive crushing agent whose main component is a lime-based inorganic compound.
この破砕工法の概略を説明すると、この工法は、被破砕
物としての岩盤やコンクリート構造物に孔を穿設し、孔
の内部にスラリー化した静的破砕剤(以下、破砕剤スラ
リーと略記する)を充填して行なうもので、水を含んだ
破砕剤が水和反応に伴って膨張を起こし、被破砕物を徐
々に破砕する。To give an overview of this crushing method, this method involves drilling a hole in the rock or concrete structure to be crushed, and filling the hole with a static crushing agent (hereinafter abbreviated as crushing agent slurry). ), and the crushing agent containing water expands as a result of the hydration reaction, gradually crushing the material to be crushed.
従って、この工法によれば騒音、粉塵等の発生を殆んど
伴わない破砕作業が可能である。Therefore, according to this construction method, crushing work can be performed with almost no noise, dust, etc. generated.
ところが、上記の工法において破砕剤スラリー中の水和
反応が急激に進む場合には、破砕剤スラリーの温度が著
しく上昇して含有する水が蒸気化し、大きい蒸気圧が発
生し、このため破砕前にスラリーが孔外部に噴出すると
いう現象が起こる。However, in the above method, when the hydration reaction in the crushing agent slurry rapidly progresses, the temperature of the crushing agent slurry rises significantly and the water it contains vaporizes, generating a large vapor pressure. A phenomenon occurs in which slurry gushes out of the hole.
このため、従来のこの種の工法では、破砕剤の成分調整
等により、水和反応速度を抑えて実施されており、従っ
て破砕剤スラリーの膨張圧の発現も緩やかとなって、コ
ンクリート、岩石等の被破砕物の破砕に要する時間が長
時間(通常1日〜数日間)となるという問題を生じてい
た。For this reason, in this type of conventional construction method, the hydration reaction rate is suppressed by adjusting the composition of the crushing agent, etc. Therefore, the expansion pressure of the crushing agent slurry is also slowed down, and concrete, rock, etc. A problem has arisen in that it takes a long time (usually from one day to several days) to crush the material to be crushed.
また、この問題を解消する目的で、破砕物の孔に充填さ
れた破砕剤スラリーを孔・の開口部側から加熱する工法
が提案されている。この工法を第1図を参照して説明す
ると、被破砕物1に穿設された孔2内部に水と混練した
破砕剤スラリー3を孔2の開口部近傍を若干列して充填
する。次いで、孔2の開口部近傍に破砕剤の水和反応を
促進し、起爆作用を有する加熱源4として酸化カルシウ
ムを水と混合したのちに充填するか、あるいは酸化カル
シウムを充填した後に水を吸収せしめて、酸化カルシウ
ムに消化反応を起こさせる。すると、酸化カルシウムと
水との反応によって発熱が起こり、この加熱源4と接触
する破砕剤スラリー3の上部が加熱される。In order to solve this problem, a method has been proposed in which the crushing agent slurry filled in the holes of the crushed material is heated from the opening side of the holes. This method will be described with reference to FIG. 1. A crushing agent slurry 3 mixed with water is filled into a hole 2 drilled in an object 1 to be crushed in a line slightly arranged near the opening of the hole 2. Next, calcium oxide is mixed with water and then filled into the vicinity of the opening of the hole 2 to serve as a heating source 4 that promotes the hydration reaction of the crushing agent and has an igniting effect, or alternatively, after the calcium oxide is filled, water is absorbed. At least cause the calcium oxide to undergo a digestive reaction. Then, heat generation occurs due to the reaction between calcium oxide and water, and the upper part of the crushing agent slurry 3 that comes into contact with the heat source 4 is heated.
上記の反応の結果、酸化カルシウム層は水酸化カルシウ
ム層に変化すると共に、体積膨張を起こして孔2開口部
をタンピングする。一方、加熱源4に接する部分近傍の
破砕剤スラリー3は、急速に水和反応を起こして温度上
昇すると共に硬化し、孔2のより深部にあるスラリーを
孔2内部にタンピングし、更に孔2深部にある破砕剤ス
ラリーは加熱されて反応が促進され、急速に膨張圧を発
現する。このため、上記改善された工法によれば、被破
砕物の孔2に充填された破砕剤スラリー3が加熱源4及
びこれに接する部分の破砕剤スラリーの硬化体による封
止作用によって噴出現象が抑えられた状態で、短時間で
高い膨張圧を生じるため、前述した従来工法に比べて破
砕に要する時間を短縮することができる。また、上記破
砕工法では、破砕剤スラリーを開口側より加熱すること
で、上部から下部に向かって熱が伝達され、破砕剤の水
和反応が行われるので、水和反応後の静的破砕剤が多孔
質体の栓として動き、下部側の破砕剤スラリーの反応に
よって発生する水蒸気が閉塞されないため、噴出現象を
起こさず、短時間で岩石、コンクリートの破砕が完了す
る。従って、この破砕工法によれば安全に、そして極め
て速やかに被破砕物を破砕することができる破砕工法が
実施可能となる。As a result of the above reaction, the calcium oxide layer transforms into a calcium hydroxide layer, expands in volume, and tamps the opening of the hole 2. On the other hand, the crushing agent slurry 3 near the part in contact with the heating source 4 rapidly undergoes a hydration reaction, hardens as the temperature rises, and tamps the slurry in the deeper part of the hole 2 into the hole 2. The crushing agent slurry in the deep part is heated to accelerate the reaction and rapidly develop expansion pressure. Therefore, according to the above-mentioned improved construction method, the crushing agent slurry 3 filled in the holes 2 of the object to be crushed is prevented from blowing out due to the sealing effect of the heating source 4 and the hardened body of the crushing agent slurry in the portion in contact with the heat source 4. Since high expansion pressure is generated in a short period of time in a suppressed state, the time required for crushing can be shortened compared to the conventional method described above. In addition, in the above-mentioned crushing method, by heating the crushing agent slurry from the opening side, heat is transferred from the top to the bottom, and the hydration reaction of the crushing agent takes place, so the static crushing agent after the hydration reaction acts as a plug for the porous body, and the water vapor generated by the reaction of the crushing agent slurry on the lower side is not blocked, so no gushing phenomenon occurs and the crushing of rocks and concrete is completed in a short time. Therefore, according to this crushing method, it becomes possible to carry out a crushing method that can crush objects to be crushed safely and extremely quickly.
しかしながら、上記改善を図った工法においても破砕時
間を有効に短縮できない場合があった。However, even with the improved method described above, there were cases in which the crushing time could not be effectively shortened.
すなわち、上記工法では、破砕剤スラリー3の上部に加
熱源4を設置する場合、第1図に示したように加熱源4
と破砕剤スラリー3との接触面が略平面であって、接触
面積が小さい。従って、過熱源4から破砕剤スラリー3
への熱の伝達は必ずしも効率良く行なわれず、このため
に特に寒冷期における作業時や、被破砕物に穿設する孔
として小径孔(例えば直径が4〜51以下の場合)を用
いる時は短時間で破砕ができないことがあった。すなわ
ち、寒冷期では、孔周囲のコンクリートや岩石の温度が
低い為に、加熱源より発生する熱量が周囲に拡散してし
まい、破砕剤スラリーの温度を上昇せしめることが出来
ず、また小径孔を用いるときは、破砕剤スラリーの母に
対して、熱の拡散面である孔壁面の面積が相対的に大き
い為に、加熱源よりの熱量が周囲(被破砕物中)に拡散
してしまい、やはり破砕剤スラリーの温度を上昇させる
ことができない等が原因と考えられる。That is, in the above construction method, when the heating source 4 is installed above the crushing agent slurry 3, the heating source 4 is installed as shown in FIG.
The contact surface between the crushing agent slurry 3 and the crushing agent slurry 3 is substantially flat, and the contact area is small. Therefore, from the superheat source 4 to the crushing agent slurry 3
Transfer of heat to the material is not always efficient, and for this reason, it takes a long time to transfer heat, especially when working in cold seasons or when using small-diameter holes (for example, diameters of 4 to 5 mm or less) to drill into the material to be crushed. There were times when it was not possible to crush the product due to time constraints. In other words, in cold seasons, the temperature of the concrete and rocks around the holes is low, so the amount of heat generated from the heating source diffuses into the surrounding area, making it impossible to raise the temperature of the crushing agent slurry. When used, the area of the hole wall surface, which is the heat diffusion surface, is relatively large compared to the base of the crushing agent slurry, so the amount of heat from the heating source is diffused into the surroundings (into the object to be crushed). The reason for this is probably that the temperature of the crushing agent slurry cannot be increased.
本発明は上記事情に鑑みてなされたもので、寒冷な湯度
条件下や破砕剤充填用の孔として小径孔(例えば直径が
4〜5印以下の孔)を用いる場合をも含めて破砕時間の
短縮を図ることができる破砕工法を提供することを目的
とする。The present invention has been made in view of the above circumstances, and the crushing time can be reduced even under cold water temperature conditions or when using small diameter holes (for example, holes with a diameter of 4 to 5 marks or less) as holes for filling the crushing agent. The purpose is to provide a crushing method that can shorten the time required.
以下、本発明を図面を参照して詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
本発明の膨張性破砕剤を用いた破砕工法は、被破砕物に
穿設された孔の内部に膨張性破砕剤と水との混合物を充
填し、次いで前記孔内部にその開口部側から加熱源を充
填してこの加熱源と前記混合物とを接触せしめて行なう
破砕工法において、前記孔の開口部近傍を、前記加熱源
が充填されるべぎ深さ程度の深さ寸法をもって前記孔の
開孔断面積より拡大して加熱源充填部を形成し、加熱源
充填部の下部一定深さまで破砕材スラリー及び湿潤ケー
キを充填し、または加熱源充填部の下方最底部まで破砕
剤スラリー及び湿潤ケーキを充填し、前記破砕材スラリ
ー及び湿潤ケーキの上部に前記加熱源を充填して同加熱
源と前記破砕剤との接触面積を拡大したことを特徴とす
る。The crushing method using the expandable crushing agent of the present invention involves filling a hole drilled in an object to be crushed with a mixture of the expandable crushing agent and water, and then heating the inside of the hole from the opening side. In a crushing method in which the heat source is filled with a heat source and the mixture is brought into contact with the mixture, the hole is opened to a depth approximately equal to the depth at which the heat source is filled in the vicinity of the hole opening. Form a heating source filling part that is larger than the cross-sectional area of the hole, and fill the crushing material slurry and wet cake to a certain depth below the heating source filling part, or fill the crushing agent slurry and wet cake to the bottom of the heating source filling part. The heating source is filled in the upper part of the crushing material slurry and the wet cake to expand the contact area between the heating source and the crushing agent.
第2図は、本発明の破砕工法の一例を説明するための図
である。本発明の破砕工法では、まず従来工法と同様に
被破砕物1に破砕剤スラリーを充填するための孔2を穿
設する。この孔2は、従来工法で用いる孔と同程度の径
及び深さをもったものでよい。また、本発明の工法では
従来工法より短時間で膨張圧を発生せしめて、より高い
破砕力を発規させることができるため、従来工法より径
の小さい孔を用いて破砕剤の使用量を従来より少量とす
ることもできる。FIG. 2 is a diagram for explaining an example of the crushing method of the present invention. In the crushing method of the present invention, holes 2 for filling the crushing agent slurry in the object 1 to be crushed are first drilled in the same manner as in the conventional method. This hole 2 may have the same diameter and depth as the hole used in the conventional construction method. In addition, the method of the present invention can generate expansion pressure in a shorter time than the conventional method and exert a higher crushing force. Smaller amounts can also be used.
上記の孔2の開口部近傍には、その深部側の内径寸法よ
り若干拡径して加熱源充填部5を形成する。この加熱源
充填部5の径は、作業環境(湿度条件等)を考慮して定
めればよく、例えばより深部の孔2の径の1.1〜3倍
程度の径とすればよい。また、加熱源充填部5の深さは
、第2図に示すように充填する加熱源の厚さ寸法より若
干大きいか、あるいは同程亀が好ましい。なお、上記孔
2及び加熱源充填部5を被破砕物1に穿設する順序は、
特に限定されるものではない。Near the opening of the hole 2, a heating source filling portion 5 is formed with a diameter slightly larger than the inner diameter on the deep side. The diameter of the heating source filling portion 5 may be determined in consideration of the working environment (humidity conditions, etc.), and may be, for example, approximately 1.1 to 3 times the diameter of the deeper hole 2. Further, it is preferable that the depth of the heating source filling portion 5 is slightly larger than the thickness of the heating source to be filled, as shown in FIG. 2, or approximately the same depth. The order in which the holes 2 and the heating source filling part 5 are drilled in the object 1 to be crushed is as follows:
It is not particularly limited.
上記孔2及び加熱源充填部5の穿設後に、孔2内部には
膨張性破砕剤と水とを所定の割合をもって混合してなる
破砕剤スラリーを、加熱源充填部5の下方一定の深さに
達する程度まで充填する。After drilling the hole 2 and the heating source filling part 5, a crushing agent slurry made by mixing an expandable crushing agent and water at a predetermined ratio is poured into the hole 2 to a certain depth below the heating source filling part 5. Fill until it reaches the desired temperature.
次いで、加熱源充填部5に加熱源6を充填する。Next, the heating source filling section 5 is filled with the heating source 6 .
加熱源6としては、従来工法に使用されていた発熱性物
質と同様なものが適用可能であって、例えば酸化カルシ
ウム、アルミン酸塩、か焼ドロマイト、またはその伯の
水和反応により発熱する物質、ガスバーナ、トーチバー
ナ、電熱線、たき火等からの発生熱のうちの1種類以上
からなるものを利用した加熱源が好適である。この発熱
性物質を加熱源6として使用するにあたっては、発熱性
物質と水とを混合した後に加熱源充填部5に充填する方
法、発熱性物質を充填後にこれに水を吸収させる方法等
を適宜選択して実施することができ、更には加熱源充填
部5の径よりわずかに小さい外径を有する熱伝導性の良
好な容器に前記発熱性物質を収納し、加熱源6として用
いることもできる。As the heating source 6, the same exothermic substances used in conventional construction methods can be used, such as calcium oxide, aluminate, calcined dolomite, or substances that generate heat due to their hydration reactions. A heating source using one or more of heat generated from a gas burner, a torch burner, an electric heating wire, a bonfire, etc. is suitable. When using this pyrogenic substance as the heating source 6, there are appropriate methods such as a method of mixing the pyrogenic substance and water and then filling the heating source filling part 5, a method of filling the pyrogenic substance and then allowing it to absorb water, etc. Further, the exothermic substance can be stored in a highly thermally conductive container having an outer diameter slightly smaller than the diameter of the heating source filling part 5 and used as the heating source 6. .
しかして、上記のような本発明の破砕工法によれば、加
熱源6と破砕剤スラリー3との接触面積を従来工法より
広くして熱の伝達効率を高めることができ、従って破砕
剤スラリー3の加熱を確実に行なうことができる。また
、加熱源充填部5が孔2より大径であるため加熱源6で
発生する熱の一部が孔2の上部周囲の被破砕物1を加熱
してその温度を高めることができ、従って、破砕剤スラ
リ−3上部からの熱の散逸を抑えて破砕剤の水和反応を
効果的に促進させることができる。このため、第2図に
示す本発明の工法によれば加熱源6で発生する熱量がこ
れと広い接触面積をもって接触する破砕剤スラリー3に
効率よく与えられ、低温度の条件下においても破砕剤ス
ラリーが確実に加熱されて短時間で反応が進行し、破砕
時間が従来工法より短時間になる。Therefore, according to the crushing method of the present invention as described above, the contact area between the heat source 6 and the crushing agent slurry 3 can be made wider than in the conventional method, thereby increasing the heat transfer efficiency. can be reliably heated. Further, since the heating source filling part 5 has a larger diameter than the hole 2, a part of the heat generated by the heating source 6 can heat the object 1 to be crushed around the upper part of the hole 2 and increase its temperature. , it is possible to suppress the dissipation of heat from the upper part of the crushing agent slurry 3 and effectively promote the hydration reaction of the crushing agent. Therefore, according to the construction method of the present invention shown in FIG. 2, the amount of heat generated by the heating source 6 is efficiently imparted to the crushing agent slurry 3 that comes in contact with the crushing agent slurry 3 with a wide contact area, and even under low temperature conditions, the crushing agent slurry The slurry is reliably heated and the reaction progresses in a short time, making the crushing time shorter than with conventional methods.
なお、第2図においては破砕剤スラリー3を加熱源充填
部5の下部に至るまで充填した例を説明したが、破砕剤
スラリーの充填聞はこの例に限定されるものではなく、
加熱源充填部5内部の加熱11ii’、 6から発生す
る熱が効果的に伝達される範囲にあればよく、例えば破
砕剤スラリーを孔2の加熱源充填部5の下方最低部まで
充填した場合にも被破砕物1を介して破砕剤スラリーが
加熱されるため、破砕時間を短縮することができる。Although FIG. 2 describes an example in which the crushing agent slurry 3 is filled up to the bottom of the heating source filling part 5, the filling period of the crushing agent slurry is not limited to this example.
It is sufficient that the heat generated from the heating elements 11ii' and 6 inside the heating source filling part 5 is effectively transferred, for example, when the crushing agent slurry is filled to the lower lowest part of the heating source filling part 5 in the hole 2. Since the crushing agent slurry is also heated through the object 1 to be crushed, the crushing time can be shortened.
以上説明したように、本発明の破砕工法は、被破砕物に
穿設された孔に破砕剤スラリーを充填すると共に前記孔
の上端開口部に破砕剤スラリーと接触する加熱源を配し
た工法において、前記孔の開口部近傍の開孔断面積を拡
大して加熱源充填部を形成し、この加熱源充填部に発熱
性物質からなる加熱源を充填し、この加熱源と破砕剤ス
ラリーとの熱的な接触面積を実質的に拡大した破砕工法
であるから、加熱源から破砕剤スラリーへの熱の伝達効
率を良好にして破砕剤スラリーを確実に加熱することが
できる。従って、本発明によれば寒冷時等の低温度条件
下や破砕用の孔が小径で熱の散逸が起こり易い条件であ
る場合にも、破砕初期の破砕剤スラリーの上部を確実に
加熱、硬化させて封止作用をもたせると共に、破砕剤の
反応を促進し、短時間で膨張圧を発生させて従来工法よ
り破砕時間を短縮することができるという効果を奏する
。As explained above, the crushing method of the present invention is a method in which a hole drilled in an object to be crushed is filled with a crushing agent slurry, and a heating source that comes into contact with the crushing agent slurry is arranged at the upper end opening of the hole. , the cross-sectional area of the hole near the opening of the hole is expanded to form a heating source filling part, the heating source filling part is filled with a heating source made of a pyrogenic substance, and the heating source and the crushing agent slurry are connected to each other. Since this is a crushing method in which the thermal contact area is substantially expanded, the efficiency of heat transfer from the heating source to the crushing agent slurry is improved, and the crushing agent slurry can be reliably heated. Therefore, according to the present invention, the upper part of the crushing agent slurry at the initial stage of crushing can be reliably heated and hardened even under low temperature conditions such as in cold weather or when the crushing hole is small in diameter and heat dissipation is likely to occur. This has the effect of not only providing a sealing effect but also promoting the reaction of the crushing agent and generating expansion pressure in a short time, thereby shortening the crushing time compared to conventional methods.
次に実施例を示して本発明を更に具体的に説明する。Next, the present invention will be explained in more detail with reference to Examples.
1辺がjmの立方体の無筋コンクリート供試体を複数個
作成し、これらを温度0℃の恒温室内に1日放置して供
試体の温度を0℃とした。次いで実施例用の供試体には
第3図に示すように径40鴫、深さ90CT11の孔2
を穿設すると共にその開口部に径60陥、深さ15ci
の加熱源充填部5を穿設した。また、比較用の供試体に
は径40+mm、深さ90cTllの孔のみを穿設した
。A plurality of cubic unreinforced concrete specimens with sides of jm were prepared, and these were left in a thermostatic chamber at a temperature of 0°C for one day to bring the temperature of the specimens to 0°C. Next, as shown in FIG.
and a hole with a diameter of 60 mm and a depth of 15 cm.
A heating source filling part 5 was bored. In addition, only a hole with a diameter of 40+mm and a depth of 90 cTll was drilled in a specimen for comparison.
実施例用の供試体に対しては、水化25%で混練した膨
張性破砕剤S−マイト(住友セメント(44,1製、S
型、適用温度範囲5〜20℃)を加熱源充填部5で5c
mの深さに至るまで充填し、更に残り10帽の加熱源充
填部に生石灰粒を充填し、この生石灰粒に対して50%
のωの水を注いで本発明の工法を施した。For the test specimens for the example, an expandable crushing agent S-mite (manufactured by Sumitomo Cement (44.1, S
mold, applicable temperature range 5 to 20°C) in the heating source filling part 5.
Fill the remaining 10 heat source filling parts with quicklime particles to a depth of 50%.
The method of the present invention was applied by pouring ω of water.
一方、比較用の供試体に対しては、上記と同様の破砕剤
スラリー及び生石灰粒を用い、生石灰粒を開口部までl
0CII+の層となるように充填し、従来工法を施した
。On the other hand, for a comparative specimen, the same crushing agent slurry and quicklime granules as above were used, and the quicklime granules were luted to the opening.
It was filled to form a layer of 0CII+, and conventional construction methods were applied.
上記の作業の結果、本発明の工法を施した供試体は破砕
剤スラリー及び加熱源の充填後、20分間で亀裂が生じ
、30分間で分割が完了した。これに対して従来工法を
施した供試体は、充填から24時間後に亀裂が生じ、3
0vf間後に分割した。As a result of the above-mentioned work, the specimen subjected to the construction method of the present invention cracked within 20 minutes after being filled with the crushing agent slurry and heating source, and the division was completed within 30 minutes. On the other hand, the specimens constructed using the conventional method developed cracks 24 hours after filling, and 3
It was divided after 0vf.
これらの結果から、本発明は低温度の条件下でも破砕時
間を効果的に短縮できることが確認できた。From these results, it was confirmed that the present invention can effectively shorten the crushing time even under low temperature conditions.
第1図は従来工法を説明するための被破砕物の断面図、
第2図は本発明の詳細な説明するための被破砕物の断面
図、第3図は実施例に用いた供試体の斜視図である。
1・・・・・・被破砕物、2・・・・・・孔、3・・・
・・・破砕剤スラリー、5・・・・・・加熱源充填部、
6・・・・・・加熱源。
出願人 住友セメント株式会社
第2図Figure 1 is a cross-sectional view of the object to be crushed to explain the conventional construction method.
FIG. 2 is a sectional view of an object to be crushed for explaining the present invention in detail, and FIG. 3 is a perspective view of a specimen used in an example. 1... Material to be crushed, 2... Hole, 3...
... Crushing agent slurry, 5 ... Heating source filling section,
6... Heating source. Applicant Sumitomo Cement Co., Ltd. Figure 2
Claims (1)
との混合物を充填し、次いで前記孔内部にその開口部側
から加熱源を充填してこの加熱源と前記混合物とを接触
せしめて行なう破砕工法において、 前記孔の開口部近傍を、前記加熱源が充填されるべき深
さ程度の深さ寸法をもって前記孔の開口断面積より拡大
して加熱源充填部を形成し、この加熱源充填部に前記加
熱源を充填することを特徴とする膨張性破砕剤を用いた
破砕工法。 2)前記加熱源は、酸化カルシウム、か焼ドロマイト、
アルミン酸塩化合物及びその他の水和反応により発熱す
る化合物等の発熱性物質のうちの1種類以上と水との反
応熱を利用した加熱源である特許請求の範囲第1項記載
の破砕工法。 3)前記加熱源は、ガスバーナ、トーチバーナ、電熱線
、たき火等により発生する熱のうちの少なくとも1種を
利用した加熱源である特許請求の範囲第1項記載の破砕
工法。[Claims] 1) A mixture of an expandable crushing agent and water is filled into a hole drilled in an object to be crushed, and then a heating source is filled into the hole from the opening side. In a crushing method in which a heating source and the mixture are brought into contact, the vicinity of the opening of the hole is heated by expanding the cross-sectional area of the opening of the hole to a depth approximately equal to the depth to which the heating source is to be filled. 1. A crushing method using an expandable crushing agent, characterized in that a heat source filling part is formed and the heat source is filled in the heating source filling part. 2) The heating source is calcium oxide, calcined dolomite,
The crushing method according to claim 1, which is a heating source that utilizes the heat of reaction between water and one or more of exothermic substances such as aluminate compounds and other compounds that generate heat due to hydration reactions. 3) The crushing method according to claim 1, wherein the heat source is a heat source that utilizes at least one of heat generated by a gas burner, a torch burner, a heating wire, a bonfire, or the like.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1577684A JPS60161751A (en) | 1984-01-31 | 1984-01-31 | Method of crushing construction using expansible crushing agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1577684A JPS60161751A (en) | 1984-01-31 | 1984-01-31 | Method of crushing construction using expansible crushing agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60161751A true JPS60161751A (en) | 1985-08-23 |
JPH0376980B2 JPH0376980B2 (en) | 1991-12-09 |
Family
ID=11898213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1577684A Granted JPS60161751A (en) | 1984-01-31 | 1984-01-31 | Method of crushing construction using expansible crushing agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60161751A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61197055A (en) * | 1985-02-27 | 1986-09-01 | 日本セメント株式会社 | Crushing apparatus |
JPS62136253A (en) * | 1985-12-10 | 1987-06-19 | 日本油脂株式会社 | Method for crushing rock and concrete structure etc. |
US5159179A (en) * | 1989-03-15 | 1992-10-27 | Chimica Edile Artigiani Di Ghini & Pasquini S.N.C. | Heating device for accelerating the action of expansive mortars |
US5411274A (en) * | 1992-05-18 | 1995-05-02 | Toyota Jidosha Kabushiki Kaisha | Vortex gasket for automative exhaust system |
-
1984
- 1984-01-31 JP JP1577684A patent/JPS60161751A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61197055A (en) * | 1985-02-27 | 1986-09-01 | 日本セメント株式会社 | Crushing apparatus |
JPH0571301B2 (en) * | 1985-02-27 | 1993-10-06 | Nihon Cement | |
JPS62136253A (en) * | 1985-12-10 | 1987-06-19 | 日本油脂株式会社 | Method for crushing rock and concrete structure etc. |
US5159179A (en) * | 1989-03-15 | 1992-10-27 | Chimica Edile Artigiani Di Ghini & Pasquini S.N.C. | Heating device for accelerating the action of expansive mortars |
US5411274A (en) * | 1992-05-18 | 1995-05-02 | Toyota Jidosha Kabushiki Kaisha | Vortex gasket for automative exhaust system |
US5454604A (en) * | 1992-05-18 | 1995-10-03 | Toyoda Jidosha Kabushiki Kaisha | Vortex gasket for automotive exhaust system |
Also Published As
Publication number | Publication date |
---|---|
JPH0376980B2 (en) | 1991-12-09 |
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