JPH01270638A - Hot strength tester - Google Patents
Hot strength testerInfo
- Publication number
- JPH01270638A JPH01270638A JP10100788A JP10100788A JPH01270638A JP H01270638 A JPH01270638 A JP H01270638A JP 10100788 A JP10100788 A JP 10100788A JP 10100788 A JP10100788 A JP 10100788A JP H01270638 A JPH01270638 A JP H01270638A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- sample pieces
- sample
- definite
- testing
- 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
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 239000011449 brick Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 239000011261 inert gas Substances 0.000 abstract description 3
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910000953 kanthal Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、熱間強度試験装置に関し、特に省エネルギー
化がはかれて、雰囲気の調節が可能な熱間強度試験装置
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hot strength testing device, and more particularly to a hot strength testing device that is energy-saving and capable of controlling the atmosphere.
従来の技術
従来、耐火煉瓦、セラミックス等の熱間における強度を
測定するのに、台車の上に試料片をそれぞれ載せて試験
炉内に搬送し、所定の抗折位置で試料片を抗折し、抗折
荷重を測定する方式が知られている。Conventional technology In the past, to measure the hot strength of refractory bricks, ceramics, etc., specimens were placed on a trolley, transported into a test furnace, and the specimens were bent at a predetermined bending position. , a method of measuring bending load is known.
また、試験炉内に試料片をハツチ式にして送り込み、所
定の温度に達したら試料片を順次抗折するバッチ処理方
式が知られている。Furthermore, a batch processing method is known in which sample pieces are fed into a test furnace in a hatch type and the sample pieces are sequentially broken when a predetermined temperature is reached.
発明が解決しようとする課題
しかし、前者のものでは、台車を試験炉に搬入出するた
めに試験炉として大きな容積を必要とし、また試料片と
ともに台車も同時に加熱され、しかも台 ・車の搬
出によって試料片の１０倍以上もの熱量が持ち去られる
ものであった。そのため、台車による試料片の搬送方式
では、不要な大熱量を必要とし、大量の電力を消費する
とともに、炉内の雰囲気調節用としてＮ２ガス等を吹き
込んでも、炉内容積が大きくて雰囲気調整ができないも
のであった。Problems to be Solved by the Invention However, the former method requires a large capacity as a test furnace in order to transport the cart into and out of the test furnace, and the cart is heated at the same time as the sample piece, and furthermore, the loading and unloading of the cart and cart requires a large capacity. More than 10 times the amount of heat was removed from the sample piece. Therefore, the method of transporting sample pieces using a trolley requires an unnecessary large amount of heat, consumes a large amount of electricity, and even if N2 gas etc. is blown in to adjust the atmosphere inside the furnace, the volume inside the furnace is large and the atmosphere cannot be adjusted. It was impossible.
また、後者にあっては、パンチ処理数が十数本程度で、
きわめて能率が悪いものであった。In addition, in the latter case, the number of punches processed is about ten,
It was extremely inefficient.
課題を解決するための手段
本発明は上記のような点に鑑みたもので、上記の課題を
解決するために、耐火煉瓦、セラミックス等の試料片を
試験炉に送給して強度試験機で熱間強度試験を行う熱間
強度試験装置において、試験炉の炉床に試料片摺動用の
レールを敷設し、このレールの上に試料片を一定ピッチ
で整列して強度試験機に送り込み自在に配設するととも
に、送り込む試料片を所要の温度に加熱して試験可能な
程度の小容量に試験炉を形成したことを特徴とする熱間
強度試験装置を提供するにある。Means for Solving the Problems The present invention was developed in view of the above-mentioned problems, and in order to solve the above-mentioned problems, sample pieces of refractory bricks, ceramics, etc. are fed to a testing furnace and tested using a strength testing machine. In hot strength testing equipment that performs hot strength tests, a rail for sliding the sample pieces is laid on the hearth of the test furnace, and the sample pieces are arranged at a constant pitch on this rail and fed freely into the strength testing machine. An object of the present invention is to provide a hot strength testing apparatus characterized in that a test furnace is formed to have a small capacity enough to carry out a test by heating a sample piece to be fed to a required temperature.
作用
本発明によれば、レールの上に試料片をスペーサを介し
て整列し、強度試験機に送り込んで強度試験を行うこと
によって、従来のように台車で大熱量を消費することな
く、小容量の試験炉で熱間強度試験を行うことができる
。また、試験炉を小容量とすることによって、試験炉の
電力容量を従来の半分以下にでき、また小容量なのでＮ
２ガス等の吹き込みによる炉内の雰囲気調整も容易にで
きる。According to the present invention, by arranging sample pieces on a rail via spacers and sending them into a strength testing machine to perform a strength test, a small capacity test can be achieved without consuming a large amount of heat with a trolley as in the past. Hot strength tests can be conducted in a test furnace. In addition, by making the test reactor small in capacity, the power capacity of the test reactor can be reduced to less than half of the conventional one.
The atmosphere inside the furnace can also be easily adjusted by blowing in two gases.
実施例 以下、本考案を実施例にもとづいて説明する。Example The present invention will be explained below based on examples.
第１図以下は、本発明の一実施例である。試験炉１は電
気炉方式のもので、第１図、第２図のように所定の厚さ
で、やや横長のｔＪ字状断面とした耐火壁の炉壁２の上
面に炉蓋３を開閉可能に装着し、一端面側の試料片入口
４から耐火煉瓦等の試料片５を送り込んで、他端部側の
強度試験機６に送り、試験した試料片５を他端側の炉床
７部に開閉自在の排出口８からυト出するようにしてい
る。炉床７は炉壁２と一体的に形成していて、その上面
に第２図のように所定の間隔で平行にレール９を突設し
たレール床材１０を配設し、レール９の上に上記した試
料片５をスペーサ−１１を介して整列して搭載し、炉床
７を外方へ延設した端部に設けた電動シリンダーのよう
な移送装置１２で定寸送りすることによって試料片５を
強度試験機６に送り込むようにしている。上記レール床
材１０の両側部には、第２図のようにレール９にそって
ガイド１３を突設していて、試料片５をレール９にそっ
て整列状態で移送できるようにしている。また、スペー
サー１１は、第１図、第２図のように試料片５よりやや
背低くし、その中央部を凹設して抗折の邪魔にならない
ようにしているとともに、高温下で化学反応を起こさな
い高純度のアルミナ材質のものとしている。また炉床７
は、試料片５と化学反応を起こさないことと、摩耗によ
る損耗とから窒化珪素の材質を使用している。FIG. 1 and subsequent figures show an embodiment of the present invention. The test furnace 1 is of an electric furnace type, and as shown in Figs. 1 and 2, a furnace lid 3 is installed on the upper surface of the furnace wall 2, which is a refractory wall with a predetermined thickness and a slightly horizontally elongated TJ-shaped cross section. A sample piece 5 such as a refractory brick is sent from the sample piece inlet 4 on one end side to the strength testing machine 6 on the other end side, and the tested sample piece 5 is passed through the hearth 7 on the other end side. The water is discharged from a discharge port 8 which can be opened and closed at the bottom. The hearth 7 is formed integrally with the hearth wall 2, and as shown in FIG. The above-mentioned sample pieces 5 are arranged and mounted via spacers 11, and the samples are fed by a fixed length using a transfer device 12 such as an electric cylinder provided at the end of the hearth 7 extending outward. The piece 5 is fed into a strength testing machine 6. As shown in FIG. 2, guides 13 are provided on both sides of the rail floor material 10 to project along the rail 9, so that the sample pieces 5 can be transferred along the rail 9 in an aligned state. In addition, the spacer 11 is made slightly shorter than the sample piece 5 as shown in FIGS. 1 and 2, and its central part is recessed so that it does not get in the way of bending. It is made of high-purity alumina material that does not cause. Also hearth 7
The material used is silicon nitride because it does not cause a chemical reaction with the sample piece 5 and is resistant to wear and tear.
強度試験機６は、第１図、第２図のように炉蓋３を貫通
してプランジャーのような抗折部１４を炉内に突き出し
、第１図のように試験炉１の端部がら突き出した試料片
検出器１５で位置検出して停止した試料片５を試験でき
るようにしている。強度試験機６は、第２図のように試
験炉１を跨（ように架台３５を架設して構成しており、
架台３５に秤りのようにてこ機構で荷重レバー１６を枢
支し、その中央部に垂直状に支持金具１７を介して上記
プランジャーの抗折部１４を交換可能に垂設している。The strength testing machine 6 penetrates the furnace cover 3 and protrudes a bent part 14 like a plunger into the furnace as shown in FIGS. The position of the sample piece 5 which has been stopped can be detected by a sample piece detector 15 that protrudes completely, and the sample piece 5 that has been stopped can be tested. The strength testing machine 6 is constructed by erecting a pedestal 35 across the testing furnace 1 as shown in FIG.
A load lever 16 is pivotally supported on a pedestal 35 by a lever mechanism like a scale, and the bending portion 14 of the plunger is vertically disposed in the center thereof via a support fitting 17 so as to be replaceable.
そして、図のよう乙こ荷重負荷装置１８を荷重レバー１
６の一端に連結し、荷重レバー１６のてこ機構によって
抗折部１４に所定の荷重を負荷して抗折試験を行えるよ
うにしている。また、図のように荷重レバー１６の他端
に重り１９を吊り下げて中央の抗折部１４が中立状態に
支持されるようにしており、荷重負荷側の荷重レバー１
６の一端側にロードセルのような荷重検出器２０および
歪ゲージまたは磁気ゲージのような変位計２１を取着し
て荷車用スクリュー２２を接続し、パルスモータ−のよ
うなサーボモーター２３で荷重用スクリ１−２２を回転
駆動し、荷重検出器２０で試料片５の抗折荷重を測定し
、変位計２１で試料片５の変位を測定できるようにして
いる。Then, move the load loading device 18 to the load lever 1 as shown in the figure.
6, so that a predetermined load can be applied to the bending portion 14 using the lever mechanism of the load lever 16 to perform a bending test. In addition, as shown in the figure, a weight 19 is suspended from the other end of the load lever 16 so that the central bending portion 14 is supported in a neutral state, and the load lever 19 on the load side
A load detector 20 such as a load cell and a displacement meter 21 such as a strain gauge or magnetic gauge are attached to one end of the 6, and a cart screw 22 is connected to the load sensor 20, and a servo motor 23 such as a pulse motor is used to detect the load. The screen 1-22 is driven to rotate, a load detector 20 measures the bending load of the sample piece 5, and a displacement meter 21 measures the displacement of the sample piece 5.
また、炉蓋３には、第２図のようにカンタルスーパーの
ようなヒーター２４を一定間隔で配設していて、試料炉
１内を所定の温度に昇温しで試料片５を加熱自在とし、
炉壁２の両側には不活性ガス吹き込み管２５を一定間隔
で配設して、炉内にＮ２ガス、Δｒガス等の雰囲気ガス
を吹き込んで雰囲気調整できるようにしている。Furthermore, heaters 24 such as Kanthal Super are arranged at regular intervals on the furnace lid 3 as shown in FIG. year,
Inert gas blowing pipes 25 are arranged at regular intervals on both sides of the furnace wall 2, so that atmospheric gas such as N2 gas or Δr gas can be blown into the furnace to adjust the atmosphere.
上記のように形成した試料炉１は、第３図のようにパー
ソナルコンピューターのようなコンピューター２６で自
動制御できるようにしている。コンピューター２６と接
続したシーケンサ−２７はプログラム設定により移送袋
Ｗ１２を駆動自在とし、抗折部の試料片検出器１５で試
料片５を位置検出して順次抗折部に試料片５を送り込む
ように制御している。The sample furnace 1 formed as described above can be automatically controlled by a computer 26 such as a personal computer as shown in FIG. A sequencer 27 connected to the computer 26 can freely drive the transfer bag W12 according to program settings, detect the position of the sample pieces 5 with the sample piece detector 15 in the bending part, and feed the sample pieces 5 into the bending part in sequence. It's in control.
また、温度コントローラー２８を介して、コンピュータ
ー２６や試験炉１を所定の温度状態に管理できるように
している。上記シーケンサ−２７と連動するようにした
コンピューター２６には、サーボドライバー２９を介し
て荷重負荷装置１８のサーボモーター２３を電気接続し
、所定の加圧速度でサーボモーター２３を駆動自在とし
て抗折部１４を昇降自在とし、荷重検出器２０で検出し
た抗折部１４の負荷荷重および変位計で検出した試料片
５の変位を変換器３０を介してコンピューター２６に送
信し、フロッピーディスクの記憶媒体３１に適宜に記録
できるようにしている。Further, the computer 26 and the test furnace 1 can be controlled to a predetermined temperature state via the temperature controller 28. The servo motor 23 of the load application device 18 is electrically connected to the computer 26 which is linked to the sequencer 27 through a servo driver 29, and the servo motor 23 is freely driven at a predetermined pressurizing speed. 14 can be raised and lowered, and the applied load on the bending section 14 detected by the load detector 20 and the displacement of the sample piece 5 detected by the displacement meter are transmitted to the computer 26 via the converter 30, and the storage medium 31 of a floppy disk is transmitted. This allows for appropriate recording.
上記のように荷重負荷装置１８、移送装置１２、温度コ
ントローラー２８等を自動制御するようにしたコンピュ
ーター２６は、図のようにキーボード３２で試料片５の
番号、品名、寸法、強度データー等を入力自在とし、Ｃ
ＲＴ３２を介して出力自在とし、試料片５の曲げ強度や
変位量等を換算処理してプリンター３４に適宜に出力で
きるようにしている。The computer 26, which automatically controls the load application device 18, transfer device 12, temperature controller 28, etc. as described above, inputs the number, product name, dimensions, strength data, etc. of the sample piece 5 using the keyboard 32 as shown in the figure. Freely, C
It can be freely outputted via the RT 32, and the bending strength, displacement amount, etc. of the sample piece 5 can be converted and outputted to the printer 34 as appropriate.
このように構成の試験炉にあっては、レールに試料片を
整列して送り込むため従来の台車搬送式のものに比べて
炉容積が４分の１以下となり、消費電力量も従来の２分
の１以下となった。また、不活性ガス吹き込み管を介し
てＮ２ガスを３ＯＮ／、ｉアの吹き込みで、炉内の０２
濃度を０．１％以下に雰囲気調整をすることができたも
のである。In a test furnace configured in this way, the sample pieces are lined up on the rails and fed, so the furnace volume is less than one-fourth that of a conventional trolley-transfer type, and the power consumption is only half that of the conventional one. 1 or less. In addition, N2 gas was blown into the furnace at a rate of 3ON/day through an inert gas blowing pipe.
The atmosphere could be adjusted to a concentration of 0.1% or less.
また、上記したようなパーソナルコンピューターによっ
て試料炉を自動運転することができて連続無人運転が可
能となり、夜間においても試料片を試験処理できるもの
である。Furthermore, the sample furnace can be automatically operated by a personal computer such as the one described above, making continuous unmanned operation possible, and sample pieces can be tested even at night.
特に、本実施例では、レールに試料片を搭載して移送す
るため、試料片と炉床との接触面積を小さくできて移送
装置を小出力のものとでき、さらにレールの両側にガイ
ドを設けているので、試料片に寸法誤差等があっても、
ガイドにそって試料片を強度試験機に確実に送れて試験
できるものである。In particular, in this example, since the sample piece is mounted on the rail and transferred, the contact area between the sample piece and the hearth can be reduced, and the transfer device can have a small output.Furthermore, guides are provided on both sides of the rail. Therefore, even if there is a dimensional error in the sample piece,
This allows the sample piece to be reliably sent to the strength testing machine along the guide for testing.
またさらに、炉蓋を試験炉から持ち上げて取りはずせる
ので、炉内の点検および補修が容易にできて便利なもの
である。Furthermore, since the furnace cover can be lifted and removed from the test furnace, inspection and repair of the inside of the furnace can be performed easily and conveniently.
なお、試料片としては、上記の耐火煉瓦の他に断熱煉瓦
、キャスタブル耐火物、セラミックス、鉄鋼材、プラス
チックや複合樹脂材等が適用できるものである。In addition to the above-mentioned refractory bricks, the sample piece may be insulating bricks, castable refractories, ceramics, steel materials, plastics, composite resin materials, or the like.
発明の効果
以上のように本発明にあっては、試料片をレール上に整
列して送り込めて、従来のように台車を加熱して大量の
熱量を損失することがなくなり、電力量を従来に比して
半分以下に削減でき、また電力設備も大幅に小容量にで
きる。また、試験炉が送り込む試料片を所要の温度に加
熱して試験可能な程度の小容量にできて、炉設備を小型
化でき、Ｎ２ガス等の吹き込みによる炉内雰囲気の調整
も容易にでき、効率よく、能率よく試料片の試験が行え
るものである。Effects of the Invention As described above, in the present invention, the sample pieces can be fed in line on the rail, and there is no need to heat the cart and lose a large amount of heat as in the past, and the amount of electricity is reduced compared to the conventional method. This can be reduced to more than half compared to the previous year, and the capacity of power equipment can also be significantly reduced. In addition, the test furnace can heat the sample pieces sent to the test furnace to the required temperature to make the volume small enough for testing, making the furnace equipment more compact, and making it easier to adjust the atmosphere inside the furnace by blowing in N2 gas, etc. This enables efficient and efficient testing of sample pieces.
第１図は本発明の一実施例の一部省略した側断面図、第
２図は第１図の矢視Ａ−Ａの断面図、第３図は同上の制
御ブロック図である。
１・・・試験炉、５・・・試料片、６・・・強度試験機
、７・・・炉床、９・・・レール、１２・・・移送装置
。
ま 真冒司鴻1 is a partially omitted side sectional view of an embodiment of the present invention, FIG. 2 is a sectional view taken along arrow A-A in FIG. 1, and FIG. 3 is a control block diagram of the same. DESCRIPTION OF SYMBOLS 1... Test furnace, 5... Sample piece, 6... Strength testing machine, 7... Hearth, 9... Rail, 12... Transfer device. Makoto Makoto
Claims (1)
給して強度試験機で熱間強度試験を行う熱間強度試験装
置において、試験炉の炉床に試料片摺動用のレールを敷
設し、このレールの上に試料片を一定ピッチで整列して
強度試験機に送り込み自在に配設するとともに、送り込
む試料片を所要の温度に加熱して試験可能な程度の小容
量に試験炉を形成したことを特徴とする熱間強度試験装
置。(1) In a hot strength testing device that sends sample pieces of refractory bricks, ceramics, etc. to a testing furnace and performs hot strength tests on the strength testing machine, rails for sliding the sample pieces are laid on the hearth of the testing furnace. The sample pieces are arranged on this rail at a constant pitch so that they can be freely fed into the strength testing machine, and the test furnace is constructed with a small capacity that allows testing by heating the sample pieces to the required temperature. A hot strength testing device characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101007A JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101007A JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01270638A true JPH01270638A (en) | 1989-10-27 |
| JP2649056B2 JP2649056B2 (en) | 1997-09-03 |
Family
ID=14289187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63101007A Expired - Lifetime JP2649056B2 (en) | 1988-04-22 | 1988-04-22 | Hot strength test equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2649056B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946740B1 (en) * | 2009-11-10 | 2010-04-01 | 한국건설기술연구원 | Apparatus for testing structural strength of middle and long span structures in a heating furnace |
| CN113702203A (en) * | 2021-08-04 | 2021-11-26 | 长安大学 | Method for evaluating high-temperature performance of asphalt mixture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968487U (en) * | 1972-09-26 | 1974-06-14 | ||
| JPS57175939A (en) * | 1981-04-24 | 1982-10-29 | Nippon Kokan Kk <Nkk> | Hot strength measurement in reducing atmosphere |
| JPS6039529A (en) * | 1983-08-12 | 1985-03-01 | Shimadzu Corp | High-temperature continuous material testing device |
| JPS61124847A (en) * | 1984-11-22 | 1986-06-12 | Hitachi Ltd | Continuous high temperature strength testing machine |
-
1988
- 1988-04-22 JP JP63101007A patent/JP2649056B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4968487U (en) * | 1972-09-26 | 1974-06-14 | ||
| JPS57175939A (en) * | 1981-04-24 | 1982-10-29 | Nippon Kokan Kk <Nkk> | Hot strength measurement in reducing atmosphere |
| JPS6039529A (en) * | 1983-08-12 | 1985-03-01 | Shimadzu Corp | High-temperature continuous material testing device |
| JPS61124847A (en) * | 1984-11-22 | 1986-06-12 | Hitachi Ltd | Continuous high temperature strength testing machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100946740B1 (en) * | 2009-11-10 | 2010-04-01 | 한국건설기술연구원 | Apparatus for testing structural strength of middle and long span structures in a heating furnace |
| CN113702203A (en) * | 2021-08-04 | 2021-11-26 | 长安大学 | Method for evaluating high-temperature performance of asphalt mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2649056B2 (en) | 1997-09-03 |
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