CN111231102A - Manufacturing process of steel slag manhole cover - Google Patents
Manufacturing process of steel slag manhole cover Download PDFInfo
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- CN111231102A CN111231102A CN202010059811.4A CN202010059811A CN111231102A CN 111231102 A CN111231102 A CN 111231102A CN 202010059811 A CN202010059811 A CN 202010059811A CN 111231102 A CN111231102 A CN 111231102A
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- steel
- inspection well
- steel slag
- well cover
- concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Sewage (AREA)
Abstract
The invention discloses a manufacturing process of a steel slag inspection well cover. The invention has the beneficial effects that: the prepared electrode is drilled, the diameter of the drilled hole is larger than the maximum grain diameter of the steel slag, so that the concrete at the two ends of the electrode can be ensured to be mutually communicated, the height of the cross section of the embedded electrode is smaller than the thickness of an inspection well cover made of concrete slurry, so that the electrode is ensured not to be exposed on the outer surface, cracks cannot easily appear at the electrode when the concrete bears external force, the resistance value of the steel slag concrete inspection well cover can change when the steel slag concrete inspection well cover bears the external force, and the resistivity of the inspection well cover tends to be constant within the limit load; if the inspection well cover is broken and damaged, the resistivity is rapidly increased, and the damage condition can be mastered at any time and timely replaced by testing the change of the resistivity of the steel slag concrete inspection well cover.
Description
Technical Field
The invention relates to a manufacturing process of an inspection well cover, in particular to a manufacturing process of a steel slag inspection well cover, and belongs to the technical field of inspection well covers.
Background
The inspection well cover is widely applied to urban roads, natural gas pipelines, inspection wells of chemical bases, electric power and telecommunication facility wells and the like, although the inspection well cover commonly called as a road belly button hole is small, the inspection well cover has big problems of citizen trip, traffic safety and the like, and the inspection well cover inevitably generates damage accumulation and resistance attenuation until sudden fracture due to the influence of adverse factors such as environmental corrosion, material aging, fatigue effect caused by rolling and impact of automobile tires in the service process Poor corrosion resistance, high cost, inconvenient construction, influence on the mechanical property of the structure and the like.
The steel slag is the waste slag generated in the steel-making process, because the FeO content in the steel slag is more than 20 percent, and the resistivity of the FeO is 5 multiplied by 10 < -2 > omega cm at normal temperature, the steel slag can be used as a conductive phase material for preparing a conductive self-induction steel slag concrete inspection well cover, and the electrical property of the steel slag concrete inspection well cover can be measured in real time on line, so that the change condition of the internal stress and the strain, the fatigue, the damage degree and the like can be known at any time, the steel slag concrete inspection well cover can be monitored and maintained in real time, and the occurrence of accidents can be effectively.
Disclosure of Invention
The invention aims to solve the problems and provide a manufacturing process of a steel slag manhole cover.
The invention realizes the purpose through the following technical scheme: a manufacturing process of a steel slag manhole cover comprises the following steps
Preparing raw materials, namely preparing various raw materials required by manufacturing according to the strength of the inspection well cover and the workability of the steel fiber-doped steel slag concrete;
step two, preparing concrete slurry, firstly stirring and mixing the prepared raw materials uniformly according to a certain mixing proportion, and then adding steel fibers for stirring;
thirdly, welding the framework, namely adopting phi 10 steel bars, and manufacturing the framework into a groined type by welding;
manufacturing an electrode, namely cutting a stainless steel sheet with the thickness of 0.3mm into a strip shape with the length of 60mm and the width of 40mm, and welding a single-stranded wire;
and fifthly, performing injection molding to form and lay electrodes, placing the manufactured # -shaped steel reinforcement framework in a steel mould, then placing the steel mould on a vibration platform, injecting the concrete slurry stirred according to the proportion into the steel mould, placing the manufactured electrodes in the concrete slurry through an embedded type before the concrete is not solidified, standing for 5 hours, then placing the electrodes in a curing pool for curing, numbering and removing the mould after 24 hours, and then placing the electrodes in a standard curing room for curing.
As a further scheme of the invention: in the first step, the prepared raw materials include cement, steel slag, silicon powder, sand, stone, steel fiber and a phi 10 steel bar.
As a further scheme of the invention: in the second step, the mixing proportion of the prepared concrete slurry is phi ss: Φ c 1.0: 1.0, the steel fibers are added in a distributed manner, dry mixing is carried out firstly, then wet mixing is carried out by adding water, the wet mixing time is not less than 3min, uniform stirring is ensured, and all the raw materials of the prepared concrete slurry can be fully mixed.
As a further scheme of the invention: and in the fourth step, drilling holes in the prepared electrode, wherein the diameter of each drilled hole is larger than the maximum grain size of the steel slag, so that the concrete at the two ends of the electrode can be communicated with each other.
As a further scheme of the invention: and fifthly, after the concrete slurry is injected into the steel die, vibrating for 5min, stopping vibrating for 30s, vibrating for 2min, and trowelling the surface of the concrete slurry by using an iron plate to firmly combine the concrete, eliminate the phenomena of honeycomb pitted surface and the like of the concrete and improve the strength of the concrete.
As a further scheme of the invention: and fifthly, burying the electrodes into the concrete slurry in a # -shaped manner, wherein the distance between the two electrodes and the transverse steel bar is 130mm, and the distance between the two electrodes is 500 mm.
As a further scheme of the invention: in the fifth step, the height of the cross section of the embedded electrode is smaller than the thickness of the inspection well cover made of the concrete slurry, so that the electrode is not exposed on the outer surface, and cracks are not easy to appear at the electrode when the concrete bears external force.
The invention has the beneficial effects that: the steel slag manhole cover is reasonable in manufacturing process design, holes are drilled in the manufactured electrodes, the diameter of each drilled hole is larger than the maximum grain diameter of steel slag, so that concrete at two ends of each electrode can be ensured to be communicated with each other, the concrete slurry is injected into a steel die, the steel die is vibrated for 5min, the steel die is stopped for 30s and then vibrated for 2min, an iron plate is used for trowelling the surface of the concrete slurry, so that the concrete is tightly combined, the phenomena of honeycomb pitted surface and the like of the concrete are eliminated, the strength of the steel slag manhole cover is improved, the electrodes are embedded in the concrete slurry in a # -shape, the distance between the two electrodes and a transverse reinforcing steel bar is 130mm, the distance between the two electrodes is 500mm, the height of the cross section of the embedded electrodes is smaller than the thickness of the manhole cover made of the concrete slurry, so that the electrodes cannot be exposed on the outer surface, cracks cannot easily occur at the electrodes when the concrete bears external force, the resistance of the steel slag concrete manhole cover can, the resistivity of the inspection well cover tends to be constant; if the inspection well cover is broken and damaged, the resistivity is rapidly increased, and the damage condition can be mastered at any time and timely replaced by testing the change of the resistivity of the steel slag concrete inspection well cover.
Drawings
FIG. 1 is a schematic view of the flow structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a manufacturing process of a steel slag manhole cover includes the following steps
Preparing raw materials, namely preparing various raw materials required by manufacturing according to the strength of the inspection well cover and the workability of the steel fiber-doped steel slag concrete;
step two, preparing concrete slurry, firstly stirring and mixing the prepared raw materials uniformly according to a certain mixing proportion, and then adding steel fibers for stirring;
thirdly, welding the framework, namely adopting phi 10 steel bars, and manufacturing the framework into a groined type by welding;
manufacturing an electrode, namely cutting a stainless steel sheet with the thickness of 0.3mm into a strip shape with the length of 60mm and the width of 40mm, and welding a single-stranded wire;
and fifthly, performing injection molding to form and lay electrodes, placing the manufactured # -shaped steel reinforcement framework in a steel mould, then placing the steel mould on a vibration platform, injecting the concrete slurry stirred according to the proportion into the steel mould, placing the manufactured electrodes in the concrete slurry through an embedded type before the concrete is not solidified, standing for 5 hours, then placing the electrodes in a curing pool for curing, numbering and removing the mould after 24 hours, and then placing the electrodes in a standard curing room for curing.
Further, in the embodiment of the present invention, in the first step, the prepared raw materials include cement, steel slag, silica fume, sand, stone, steel fiber, and Φ 10 steel bar.
Further, in the embodiment of the present invention, in the second step, the mixing ratio of the prepared concrete slurry is phi ss: Φ c 1.0: 1.0, the steel fibers are added in a distributed manner, dry mixing is carried out firstly, then wet mixing is carried out by adding water, the wet mixing time is not less than 3min, uniform stirring is ensured, and all the raw materials of the prepared concrete slurry can be fully mixed.
Further, in the fourth step of the present invention, a hole is drilled in the prepared electrode, and the diameter of the drilled hole is greater than the maximum particle size of the steel slag, so as to ensure that the concrete at the two ends of the electrode can be communicated with each other.
Further, in the fifth step of the present invention, after the concrete slurry is injected into the steel mold, the concrete slurry is vibrated for 5min, and after 30s, the vibration is performed for 2min, and the iron plate is used for smoothing the surface of the concrete slurry, so that the concrete is tightly bonded, and the phenomena of honeycomb pitted surface and the like of the concrete are eliminated, so as to improve the strength of the concrete.
Further, in the fifth step of the present invention, the electrodes are buried in the concrete slurry in a # -shape, and the distance between the two electrodes and the transverse steel bar is 130mm, and the distance between the two electrodes is 500 mm.
Furthermore, in the fifth embodiment of the present invention, in the fifth step, the height of the cross section of the embedded electrode is smaller than the thickness of the manhole cover made of the concrete slurry, so as to ensure that the electrode is not exposed on the outer surface, and cracks are not easily generated at the electrode when the concrete bears an external force.
The working principle is as follows: when the manufacturing process of the steel slag manhole cover is used, the steel slag concrete manhole cover with conductivity is manufactured through the manufacturing processes of preparing raw materials, preparing concrete slurry, welding a framework, manufacturing an electrode, injection molding and laying the electrode and the like, and the resistance value of the steel slag concrete manhole cover is changed when the steel slag concrete manhole cover is subjected to external force; if the inspection well cover is broken and damaged, the resistivity is rapidly increased, and the damage condition can be mastered at any time and timely replaced by testing the change of the resistivity of the steel slag concrete inspection well cover.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A manufacturing process of a steel slag manhole cover is characterized by comprising the following steps: comprises the following steps
Preparing raw materials, namely preparing various raw materials required by manufacturing according to the strength of the inspection well cover and the workability of the steel fiber-doped steel slag concrete;
step two, preparing concrete slurry, firstly stirring and mixing the prepared raw materials uniformly according to a certain mixing proportion, and then adding steel fibers for stirring;
thirdly, welding the framework, namely adopting phi 10 steel bars, and manufacturing the framework into a groined type by welding;
manufacturing an electrode, namely cutting a stainless steel sheet with the thickness of 0.3mm into a strip shape with the length of 60mm and the width of 40mm, and welding a single-stranded wire;
and fifthly, performing injection molding to form and lay electrodes, placing the manufactured # -shaped steel reinforcement framework in a steel mould, then placing the steel mould on a vibration platform, injecting the concrete slurry stirred according to the proportion into the steel mould, placing the manufactured electrodes in the concrete slurry through an embedded type before the concrete is not solidified, standing for 5 hours, then placing the electrodes in a curing pool for curing, numbering and removing the mould after 24 hours, and then placing the electrodes in a standard curing room for curing.
2. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: in the first step, the prepared raw materials include cement, steel slag, silicon powder, sand, stone, steel fiber and a phi 10 steel bar.
3. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: in the second step, the mixing proportion for preparing the concrete slurry is
And the steel fiber is added in a distributed mode, dry mixing is carried out firstly, and then water is added for wet mixing, wherein the wet mixing time is not less than 3 min.
4. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: and in the fourth step, drilling holes in the prepared electrode, wherein the diameter of the drilled holes is larger than the maximum particle size of the steel slag.
5. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: and fifthly, after the concrete slurry is injected into the steel die, firstly vibrating for 5min, stopping vibrating for 30s, then vibrating for 2min, and trowelling the surface of the concrete slurry by using an iron plate.
6. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: and fifthly, burying the electrodes into the concrete slurry in a # -shaped manner, wherein the distance between the two electrodes and the transverse steel bar is 130mm, and the distance between the two electrodes is 500 mm.
7. The manufacturing process of the steel slag inspection well cover according to claim 1, is characterized in that: and in the fifth step, the height of the cross section of the embedded electrode is smaller than the thickness of the inspection well cover made of the concrete slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010059811.4A CN111231102A (en) | 2020-01-19 | 2020-01-19 | Manufacturing process of steel slag manhole cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010059811.4A CN111231102A (en) | 2020-01-19 | 2020-01-19 | Manufacturing process of steel slag manhole cover |
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| Publication Number | Publication Date |
|---|---|
| CN111231102A true CN111231102A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010059811.4A Pending CN111231102A (en) | 2020-01-19 | 2020-01-19 | Manufacturing process of steel slag manhole cover |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050991A1 (en) * | 1997-05-07 | 1998-11-12 | Vattenfall Ab (Publ) | Concrete cover frames for anode nets |
| CN102493490A (en) * | 2011-12-10 | 2012-06-13 | 徐州工程学院 | Inspection shaft cover capable of sensing resistance variation of inspection shaft cover |
| CN105371744A (en) * | 2015-11-02 | 2016-03-02 | 武汉理工大学 | High ductility cement base strain transducer |
| CN106337442A (en) * | 2016-10-26 | 2017-01-18 | 福建诚兴新材料科技有限公司 | Reactive powder concrete material manhole cover and manufacturing method thereof |
| CN106759512A (en) * | 2017-02-09 | 2017-05-31 | 湖州瑞坤工程材料有限公司 | For municipal administration and the ultra-high performance concrete well lid and manufacture craft of power engineering |
-
2020
- 2020-01-19 CN CN202010059811.4A patent/CN111231102A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050991A1 (en) * | 1997-05-07 | 1998-11-12 | Vattenfall Ab (Publ) | Concrete cover frames for anode nets |
| CN102493490A (en) * | 2011-12-10 | 2012-06-13 | 徐州工程学院 | Inspection shaft cover capable of sensing resistance variation of inspection shaft cover |
| CN105371744A (en) * | 2015-11-02 | 2016-03-02 | 武汉理工大学 | High ductility cement base strain transducer |
| CN106337442A (en) * | 2016-10-26 | 2017-01-18 | 福建诚兴新材料科技有限公司 | Reactive powder concrete material manhole cover and manufacturing method thereof |
| CN106759512A (en) * | 2017-02-09 | 2017-05-31 | 湖州瑞坤工程材料有限公司 | For municipal administration and the ultra-high performance concrete well lid and manufacture craft of power engineering |
Non-Patent Citations (1)
| Title |
|---|
| 曹露春: "钢渣混凝土窨井盖研究", 《混凝土与水泥制品》 * |
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Application publication date: 20200605 |
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