CN110702838B - Steel slag test piece determinator and determination method - Google Patents
Steel slag test piece determinator and determination method Download PDFInfo
- Publication number
- CN110702838B CN110702838B CN201910962988.2A CN201910962988A CN110702838B CN 110702838 B CN110702838 B CN 110702838B CN 201910962988 A CN201910962988 A CN 201910962988A CN 110702838 B CN110702838 B CN 110702838B
- Authority
- CN
- China
- Prior art keywords
- steel slag
- test piece
- slag test
- bearing platform
- tank body
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/10—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using catalysis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a steel slag test piece determinator, which comprises a tank body, a material bearing platform arranged at the bottom of the tank body, a weight sensor and an ultrasonic vibrator arranged on the material bearing platform, wherein the weight sensor is arranged on the material bearing platform; the heating mechanism that sets up on the lower half lateral wall of the jar body, set up and be in the first lateral wall of the jar body on the refrigeration mechanism to and set up in the feed liquor mechanism at jar body top, vacuum interface, pressure increasing and reducing interface and test interface. The tester can realize the rapid switching of the internal temperature by reasonably arranging the heating mechanism and the refrigerating mechanism, can stir and mix the steel slag test piece by using the vibration of the material bearing platform, and can quickly simulate the natural environment by matching with the conditions of vacuum, pressurization, depressurization and the like and assisting with various liquid inlet controls, thereby bringing convenience for the performance test of the subsequent steel slag test piece, greatly shortening the test period and improving the test efficiency.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a steel slag test piece determinator and a determination method.
Background
Asphalt concrete is generally composed of asphalt and mineral aggregates (coarse aggregate, fine aggregate and filler), in the technical field, the commonly used asphalt is mainly SBS modified asphalt, the commonly used aggregate is mainly limestone, basalt, granite and the like, the commonly used filler is limestone ground mineral powder, slaked lime, cement and the like, and the asphalt concrete composed of the materials can not effectively solve two contradictions: firstly, the contradiction between high temperature stability and fatigue resistance and low temperature crack resistance; the second is the contradiction between the surface characteristics (skid resistance) and the durability of the asphalt concrete.
The steel slag is industrial waste formed after liquid slag generated in the converter steelmaking process is cooled and solidified. In order to reduce environmental pollution, steel slag has been tried in cement concrete pavements of road engineering, but the steel slag is used in asphalt concrete, common asphalt or SBS modified asphalt is generally adopted, and no example of mixing the steel slag as aggregate with rubber asphalt to prepare steel slag rubber asphalt concrete exists in the industry at present.
CN 101967047A discloses a steel slag rubber asphalt concrete and a preparation method thereof, wherein steel slag is used as coarse aggregate, rubber asphalt is used as binder, and the concrete also comprises fine aggregate and filler; the mineral aggregate grading composition of the asphalt mixture is a coarse aggregate graded broken skeleton compact type, the proportion of the rubber asphalt and the mineral aggregate is determined by a Marshall compaction test according to the volume parameter of a Marshall test piece, and is comprehensively determined after the pavement performance verification such as high-temperature anti-rutting capability, water damage resistance and the like.
However, for steel slag from different sources, in order to obtain more proportioning components, sampling and performance experiments are required after a test piece is prepared, but the existing experiment period is long, and the requirements of production and construction cannot be well met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a steel slag test piece determinator which can effectively and quickly test performance parameters of a steel slag test piece.
The invention is realized by the following technical scheme:
a steel slag test piece determinator comprises a tank body, a material bearing platform arranged at the bottom of the tank body, a weight sensor and an ultrasonic vibrator arranged on the material bearing platform; the heating mechanism that sets up on the lower half lateral wall of the jar body, set up and be in the first lateral wall of the jar body on the refrigeration mechanism to and set up in the feed liquor mechanism at jar body top, vacuum interface, pressure increasing and reducing interface and test interface.
In the above technical scheme, the liquid inlet mechanism comprises a water inlet pipe and a liquid spraying ring located above the material bearing platform.
In the technical scheme, a plurality of microcrystalline nano heating plates are fixedly arranged on the inner side of the bottom of the side wall of the tank body, and a heat insulation layer is arranged on the outer side of the side wall of the lower half part of the tank body.
In the technical scheme, the heat-insulating layer is made of aerogel heat-insulating material.
In the above technical scheme, the refrigeration mechanism on the side wall of the upper half part of the tank body comprises a TEC refrigeration body, cooling fins respectively in contact with two side faces of the TEC refrigeration body, and a cooling fan located outside the tank body.
In the technical scheme, the tank body is made of stone-resistant metal.
In the technical scheme, a disturbing fan is further arranged at the top of the inner side of the tank body.
A method for measuring a steel slag test piece comprises the following steps,
1) injecting water into the material collector to enable the steel slag test piece to be filled and soaked by liquid, and starting the ultrasonic vibrator to work;
2) vacuumizing the steel slag test piece to-0.05 to-0.1 Mpa, keeping the vacuum degree for the first preset time,
3) heating the steel slag test piece to 80-100 ℃ for the second preset time;
4) pressurizing to make the in-vivo pressure of the steel slag aggregate rapid measuring instrument reach 0.9MPa and keep for a third preset time,
5) rapidly cooling the steel slag test piece from 80-100 ℃ to-25-35 ℃, rapidly recovering the original state of the steel slag test piece, and keeping the fourth preset time,
6) Repeating the steps 1) to 5) for a preset number of times to promote complete stabilization of the activity of the steel slag test piece.
The invention has the advantages and beneficial effects that:
the tester can realize the rapid switching of the internal temperature by reasonably arranging the heating mechanism and the refrigerating mechanism, stir and mix the steel slag test piece by using the vibration of the material bearing platform, and then control the natural environment by using various liquid inlets under the conditions of vacuum, pressurization, depressurization and the like, thereby bringing convenience for the performance test of the subsequent steel slag test piece, greatly shortening the test period and improving the test efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a steel slag test piece tester of the invention.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
The invention relates to a steel slag test piece determinator, which comprises a tank body 1, a material bearing platform 2 arranged at the bottom of the tank body, a weight sensor and an ultrasonic vibrator 3 arranged on the material bearing platform; the heating mechanism that sets up on the lower half lateral wall of the jar body, set up and be in the first lateral wall of the jar body on the refrigeration mechanism to and set up in the feed liquor mechanism at jar body top, vacuum interface 11, the increase and decrease crimping mouth 12 and the test interface of being connected with the booster pump that are connected with the vacuum pump. And meanwhile, a solid material feeding port for feeding is also arranged and is connected through a flange, and the feeding port is opened every time and locked after being placed.
The tester can realize the rapid switching of the internal temperature by reasonably arranging the heating mechanism and the refrigerating mechanism, stir and mix the steel slag test piece by using the vibration of the material bearing platform, and then control the natural environment by using various liquid inlets under the conditions of vacuum, pressurization, depressurization and the like, thereby bringing convenience for the performance test of the subsequent steel slag test piece, greatly shortening the test period and improving the test efficiency.
Meanwhile, the liquid inlet mechanism comprises a water inlet pipe 4 and a liquid spraying ring 41 positioned above the material bearing platform. Utilize liquid to spout the ring and set up water spray or other liquid that contain the microparticle component in the loading head 8, can simulate natural precipitation, then shake to the loading head inside through ultrasonic vibrator, realize accelerating environmental simulation to it, simultaneously, jar body bottom be provided with liquid outlet 13 in order to discharge liquid.
Example two
As a specific implementation mode, the inboard fixed multi-disc micrite nanometer hot plate 5 that is provided with in lateral wall bottom of the jar body, if the circumference arranges, multilayer setting from top to bottom etc. simultaneously, jar body lower half lateral wall outside be provided with the heat preservation, the heat preservation be aerogel insulation material.
The refrigerating mechanism on the side wall of the upper half part of the tank body comprises a TEC refrigerating body 6, radiating fins respectively contacted with two side faces of the TEC refrigerating body, and a radiating fan 7 positioned outside the tank body. And the tank body is made of stone-resistant metal, and the top of the tank body is also provided with a disturbing fan.
The fin be two sets of, respectively with TEC's the face of heating and the face contact of refrigerating, the fin that the face of refrigerating corresponds is located a jar internal side, the fin that the face of heating corresponds is located a jar external side and carries out the heat dissipation fast through cooling blower, the design of cold on the lower heat is assisted with the disturbance fan simultaneously, is guaranteeing quick temperature variation and guarantees the temperature homogeneity.
The invention adopts the microcrystal nanometer heating plate, the heating speed is high, the temperature can be raised to 400 ℃ in 1 minute, the actual work can be controlled at 180 ℃, the refrigeration temperature can be minus 30 ℃ by adopting the TEC refrigeration body as the refrigeration medium, the temperature in winter in the north can be effectively simulated, the fan 8 is disturbed by the rapid change in a large temperature range, the temperature in the experimental equipment is uniform, the influence of the natural environment on the material is catalyzed, and the experimental period is effectively shortened.
EXAMPLE III
The method for measuring the steel slag test piece comprises the following steps,
1) injecting water into the material collector to make the steel slag test piece filled and soaked by liquid, such as water, starting the ultrasonic vibrator,
2) vacuumizing the steel slag test piece to a vacuum degree of-0.05-0.1 Mpa, and keeping the vacuum degree for a first preset time, such as 10-20 minutes, wherein the negative value refers to that the pressure display number is below 0, so that the pores of the steel slag test piece are filled with water liquid without air, and all the steel slag test pieces are fully contacted with the water liquid by referring to the inner holes and the surface area of each object,
3) heating the steel slag test piece to 80-120 ℃, preferably 80-100 ℃, and keeping for a second preset time, such as 5-30min, and then stopping heating; the rapid temperature rise is utilized to realize temperature rise catalysis of each reaction within 1 min;
4) pressurizing immediately after heating is stopped, namely pressurizing and pumping compressed air to enable the in-vivo pressure of the steel slag aggregate rapid measuring instrument to reach 0.9MPa and keeping for a third preset time, such as 3 minutes, wherein the step is mainly used for accelerating the rapid release of the activity of the steel slag;
5) rapidly cooling the steel slag test piece from 100-120 ℃ to 25-35 ℃, for example, completing cooling within 1-10min, rapidly recovering the steel slag test piece to the original state, and keeping for a fourth predetermined time, for example, 1-3 hours,
6) Repeating the steps 1) to 5) for a predetermined number of times, such as 3 to 5 times, so as to promote complete stabilization of the activity of the steel slag test piece.
Example four
The method for measuring the steel slag test piece comprises the following steps,
1) injecting water into the material collector to make the steel slag test piece filled and soaked by liquid, such as water, starting the ultrasonic vibrator,
2) vacuumizing the steel slag test piece to-0.08 Mpa, and keeping for 15 min, wherein the negative value refers to that the pressure display number is below 0, so that the pores of the steel slag test piece are filled with water liquid without empty, and all steel slag test pieces are fully contacted with the water liquid by referring to the inner holes and the surface area of each object,
3) rapidly heating the steel slag test piece to 100 ℃ within 45s, keeping for 20min, and stopping heating; the temperature rise is utilized to realize the temperature rise catalysis of each reaction;
4) pressurizing immediately after heating is stopped, namely pressurizing and pumping compressed air to enable the in-vivo pressure of the steel slag aggregate rapid measuring instrument to reach 0.9MPa and keeping for 5 minutes, wherein the step is mainly used for accelerating the rapid release of the activity of the steel slag;
5) rapidly cooling, reducing the temperature of the steel slag test piece from 100 ℃ to 25 ℃ within 1min, rapidly recovering the original state of the steel slag test piece, keeping the temperature for 3 hours,
6) Repeating the steps 1) to 5) for 3 times, so as to promote the complete stability of the activity of the steel slag test piece.
The soaking process is assisted by ultrasonic vibration, and then the vacuum, heating, pressurizing and rapid cooling are carried out to accelerate the natural change process of the steel slag, so that the characterization of the performance parameters of the steel slag can be realized in a short time, for example, the saturated water content value of polyhedral pores of the steel slag can be conveniently measured, partial components can be doped in the liquid, the filling of the steel slag can be quickly realized by utilizing the process, the contact between water and air and the steel slag is eliminated, and the later-stage various performance characterizations are convenient.
The tank body is made of stone-resistant metal (stone-resistant high-temperature alloy) and the temperature adaptation range of the tank body is far larger than the temperature change requirement in the experimental process. The aerogel material is adopted for heat preservation and heat insulation, so that the size of the equipment is reduced, the weight is reduced, and the energy-saving effect is improved. The ultrasonic vibration only vibrates the materials and the liquid in the material collector, and the waves push the liquid in the material collecting body to move without affecting other parts. The pressure in the tank body is carried out along with the experimental process, sometimes is normal pressure, sometimes is vacuum, sometimes is pressure boost, and several kinds of condition all have, do not necessarily change along with the temperature, mainly require step and process according to the material experiment, do vacuum treatment when tentatively designing for the intensification, do pressure boost or air circulation processing when cooling.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (6)
1. A method for measuring a steel slag test piece is characterized by comprising the following steps of,
1) injecting water into the material collector and enabling the steel slag test piece to be filled and soaked by liquid, and starting the ultrasonic vibrator to work;
2) vacuumizing the steel slag test piece to-0.05 to-0.1 Mpa, keeping the vacuum degree for the first preset time,
3) heating the steel slag test piece to 80-100 ℃, and keeping the temperature for a second preset time;
4) pressurizing to make the in-vivo pressure of the steel slag aggregate rapid measuring instrument reach 0.9MPa and keep for a third preset time,
5) rapidly cooling the steel slag test piece from 80-100 ℃ to 25-35 ℃, rapidly recovering the steel slag test piece to the original state, and keeping the fourth preset time,
6) Repeating the steps 1) -5) for a preset number of times to promote the complete stability of the activity of the steel slag test piece.
2. A steel slag test piece measuring instrument for carrying out the measuring method of a steel slag test piece according to claim 1, characterized in that: the ultrasonic vibration tank comprises a tank body, a material bearing platform arranged at the bottom of the tank body, a weight sensor and an ultrasonic vibrator arranged on the material bearing platform; the setting is in the lower half lateral wall of the jar body on heating mechanism, set up and be in the first lateral wall of the jar body on refrigerating mechanism to and set up in the feed liquor mechanism at jar body top, vacuum interface, pressure increasing and reducing interface and test interface, the fixed multi-disc micrite nanometer hot plate that is provided with in lateral wall bottom inboard of the jar body lower half lateral wall outside be provided with the heat preservation jar body inboard top still be provided with the disturbance fan.
3. The steel slag test piece tester as claimed in claim 2, wherein: the liquid inlet mechanism comprises a water inlet pipe and a liquid spraying ring positioned above the material bearing platform.
4. The steel slag test piece determinator of claim 3, wherein: the heat-insulating layer is made of aerogel heat-insulating material.
5. The steel slag test piece determinator of claim 2, wherein: the refrigerating mechanism on the side wall of the upper half part of the tank body comprises a TEC refrigerating body, radiating fins respectively contacted with two side faces of the TEC refrigerating body and a radiating fan positioned outside the tank body.
6. The steel slag test piece determinator of claim 2, wherein: the tank body is made of stone-resistant metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910962988.2A CN110702838B (en) | 2019-10-11 | 2019-10-11 | Steel slag test piece determinator and determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910962988.2A CN110702838B (en) | 2019-10-11 | 2019-10-11 | Steel slag test piece determinator and determination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110702838A CN110702838A (en) | 2020-01-17 |
| CN110702838B true CN110702838B (en) | 2022-07-01 |
Family
ID=69198464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910962988.2A Expired - Fee Related CN110702838B (en) | 2019-10-11 | 2019-10-11 | Steel slag test piece determinator and determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110702838B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216401A (en) * | 2008-01-09 | 2008-07-09 | 华南理工大学 | Asphalt mixture hydrodynamic pressure scouring test methods and apparatus |
| CN201149588Y (en) * | 2008-01-11 | 2008-11-12 | 长安大学 | Apparatus for simulating environment and test performance of pavement concrete |
| CN101967047A (en) * | 2009-07-28 | 2011-02-09 | 交通部公路科学研究所 | Steel slag and rubber asphalt concrete and preparation method thereof |
| CN202372433U (en) * | 2011-12-16 | 2012-08-08 | 长安大学 | Road environment simulation box |
| CN205138860U (en) * | 2015-11-25 | 2016-04-06 | 中国水利水电第十六工程局有限公司 | It is indoor experimental with small -size normal atmospheric temperature modified asphalt processing equipment |
| CN106483063A (en) * | 2016-11-08 | 2017-03-08 | 吉林大学 | Asphalt water temperature circulation testing machine |
| CN107063985A (en) * | 2017-03-30 | 2017-08-18 | 长沙理工大学 | A kind of chamber and application method for the ice-covering-proof superficial layer durability test of highway |
| CN206431028U (en) * | 2016-12-23 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of road asphalt ageing oven |
| CN207439831U (en) * | 2017-11-28 | 2018-06-01 | 长安大学 | A kind of asphalt fatigue loading device of simulated environment temperature shock |
| CN207866683U (en) * | 2018-02-26 | 2018-09-14 | 长安大学 | A kind of asphalt antiskid performance testing device simulated under different operating modes |
| KR20190102734A (en) * | 2018-02-27 | 2019-09-04 | 한국원자력연구원 | Apparatus simulation degradation condition of a sample and simulation method for degradation condition of a sample |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792274A (en) * | 2010-03-19 | 2010-08-04 | 华南理工大学 | Calcium-silicon-aluminum property regulating material for carrying out on-line high-temperature reconstruction on medium-alkalinity steel slag and application thereof |
| CN102605113B (en) * | 2012-02-29 | 2013-08-28 | 北京科技大学 | Method for modifying high-temperature steel slag by using compound materials of tailings |
| CN102788873B (en) * | 2012-08-31 | 2014-11-26 | 郑州大学 | Simulation tester for self healing of asphalt concrete cracks |
| JP6143008B2 (en) * | 2014-03-31 | 2017-06-07 | Ｊｆｅスチール株式会社 | Pressurized steam aging method for steelmaking slag |
| CN107287368B (en) * | 2017-06-07 | 2020-04-10 | 北京中冶设备研究设计总院有限公司 | Converter steel slag treatment device and method |
-
2019
- 2019-10-11 CN CN201910962988.2A patent/CN110702838B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216401A (en) * | 2008-01-09 | 2008-07-09 | 华南理工大学 | Asphalt mixture hydrodynamic pressure scouring test methods and apparatus |
| CN201149588Y (en) * | 2008-01-11 | 2008-11-12 | 长安大学 | Apparatus for simulating environment and test performance of pavement concrete |
| CN101967047A (en) * | 2009-07-28 | 2011-02-09 | 交通部公路科学研究所 | Steel slag and rubber asphalt concrete and preparation method thereof |
| CN202372433U (en) * | 2011-12-16 | 2012-08-08 | 长安大学 | Road environment simulation box |
| CN205138860U (en) * | 2015-11-25 | 2016-04-06 | 中国水利水电第十六工程局有限公司 | It is indoor experimental with small -size normal atmospheric temperature modified asphalt processing equipment |
| CN106483063A (en) * | 2016-11-08 | 2017-03-08 | 吉林大学 | Asphalt water temperature circulation testing machine |
| CN206431028U (en) * | 2016-12-23 | 2017-08-22 | 中国石油化工股份有限公司 | A kind of road asphalt ageing oven |
| CN107063985A (en) * | 2017-03-30 | 2017-08-18 | 长沙理工大学 | A kind of chamber and application method for the ice-covering-proof superficial layer durability test of highway |
| CN207439831U (en) * | 2017-11-28 | 2018-06-01 | 长安大学 | A kind of asphalt fatigue loading device of simulated environment temperature shock |
| CN207866683U (en) * | 2018-02-26 | 2018-09-14 | 长安大学 | A kind of asphalt antiskid performance testing device simulated under different operating modes |
| KR20190102734A (en) * | 2018-02-27 | 2019-09-04 | 한국원자력연구원 | Apparatus simulation degradation condition of a sample and simulation method for degradation condition of a sample |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110702838A (en) | 2020-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104227846B (en) | A kind of foam slurry device for formulating and application thereof | |
| CN108164208A (en) | A kind of nano silicon dioxide regeneration concrete and preparation method thereof | |
| CN106830835A (en) | Using the frost-resistant concrete of steam curing process | |
| CN110510966A (en) | The high-intensitive unburned product of dregs and preparation method thereof | |
| CN110702838B (en) | Steel slag test piece determinator and determination method | |
| CN104692714A (en) | Self compact concrete and environmentally friendly slope protection member production technology | |
| CN108145832B (en) | A kind of forming method of high-strength, high pervious concrete | |
| CN106769339A (en) | Analogue means and application process of the deepwater environment to cement-based material performance impact | |
| CN104762865B (en) | A kind of anti-aging Apparatus and method for of intermittent asphalt mixture mixing building | |
| CN110308083A (en) | A kind of test method suitable for low-intensity plastic concrete relative coefficient of permeability | |
| CN108675717A (en) | A kind of preparation method of oil resistant aerated bricks | |
| CN108623259A (en) | A kind of slag wraps up in slurry regenerated coarse aggregate concrete and preparation method thereof | |
| CN204689900U (en) | Be applicable to the whipping device of cement-based material two benches stirring technique | |
| CN104692733B (en) | Concrete and its preparation method is partly buried for saline soil area | |
| CN104614504A (en) | Contaminated soil solidification treatment testing method | |
| CN207140094U (en) | A kind of quick device for preparing high viscosity mortar or concrete | |
| CN114776008B (en) | One-time casting construction method for C50 high-strength concrete oversized-volume bottom plate | |
| CN108264283A (en) | A kind of discarded clay brick base polymers building block and preparation method thereof | |
| CN213771906U (en) | High-efficient modified asphalt development jar | |
| CN100333878C (en) | Size for abrasive material slurry jet flow cutting and its preparing method | |
| CN105693148B (en) | A kind of light-weight building insulation blocks and preparation method thereof | |
| CN105884235B (en) | A method of superelevation strong rubber gel material is prepared using granulated blast-furnace slag | |
| CN107311493A (en) | A kind of functional aggregate for being used to lift cracking of reinforced concrete | |
| CN113429183A (en) | High-doping-amount regenerated sand powder-based foam concrete and preparation method thereof | |
| CN107663927B (en) | A kind of regeneration concrete steel structural upright column and its construction technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220701 |