CN110451872A - The method of mixing plant waste residue production concrete and obtained concrete - Google Patents
The method of mixing plant waste residue production concrete and obtained concrete Download PDFInfo
- Publication number
- CN110451872A CN110451872A CN201910875256.XA CN201910875256A CN110451872A CN 110451872 A CN110451872 A CN 110451872A CN 201910875256 A CN201910875256 A CN 201910875256A CN 110451872 A CN110451872 A CN 110451872A
- Authority
- CN
- China
- Prior art keywords
- waste residue
- concrete
- mixing plant
- component
- plant waste
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention relates to the method for mixing plant waste residue production concrete and obtained concrete, belong to the utilization technology field of solid waste.The technical problem to be solved by the present invention is to provide the methods of mixing plant waste residue production concrete.This method sieves mixing plant waste residue, obtains the waste residue of partial size >=70mm component D and partial size < 70mm；After the waste residue of partial size < 70mm is dry, sub-electing partial size≤3mm waste residue is component A, and partial size >=31.5mm waste residue is component B, remaining waste residue is component C；Coarse aggregate is obtained after component B and component D is broken；Component A and component C obtains concrete by the preparation of specific proportion.The present invention is using mixing plant waste residue come concrete batching, the workability of concrete is good, intensity is met the requirements, convenient construction, its preparation method is simple and easy, joined mixing plant waste residue, not only reduces the cost of raw material, alleviate raw material pressure, reduce raw material usage, additionally it is possible to which the waste residue that overall treatment mixing plant generates has reached green production purpose.
Description
Technical field
The present invention relates to the method for mixing plant waste residue production concrete and obtained concrete, belong to returning for solid waste
It receives and utilizes technical field.
Background technique
Commerical ready-mixed concrete is a kind of great construction material of consumption, according to incompletely statistics, every production 1m3Concrete is average
Mixing plant waste residue (hereinafter referred to as waste residue) 0.01t will be generated, about 117,000,000 m are produced per year with Sichuan Province3Left and right concrete calculates, often
Year at least generates 1,170,000 t of waste residue.The processing of mixing plant waste residue is a traditional problem, and current general way is, unhardened
Concrete of scrapping enter sand-stone separator, realize that sandstone recycles, precipitating waste residue is then deposited in mixing plant, reaches certain
Heap is high-volume transported afterwards to building waste field.Huge waste residue amount outward transport is used as building waste not only waste of resource, while also giving city
City's disposition of solid waste increases pressure, and therefore, it is necessary to the recyclings to mixing plant waste residue to study, by waste residue ecology
The problem of changing and utilize, can alleviating flyash rise in price and natural sand shortage of resources has significant social benefit, Environmental Effect
Benefit and economic benefit.
The raw material that concrete waste residue mainly prepares concrete by cement-hydrate and largely forms, and has certain change
Activity is learned, can be recycled.Therefore, enterprise is adjusted to the waste residue that fresh concrete generates after sandstone separates is scrapped not
With solid content or density rating slurry, it is directly prepared into low grade (being less than C30) concrete, but causes concrete strength
Low, quality fluctuation is big, and organization of production difficulty is big, easily causes concrete quality accident, and the waste residue need to be through sandstone separation etc.
Complex steps, cementitious material and the content of fine aggregate are few in waste residue, not can solve the synthetical recovery reuse of mixing plant waste residue
Problem.
Patent CN105366974A discloses the method for concrete mixing plant waste residue preparation regeneration fine powder, regeneration obtained carefully
Powder and application thereof.The patent proposes waste residue pass through broken-screening-air-dry-grinding and etc. obtain regeneration fine powder material, the regeneration
Fine powder can substitute flyash, be used to prepare the concrete of C30 strength grade or C40 strength grade.But the processing method exists
Following problems: first is that waste residue all can not be utilized effectively, partial size≤2.5mm has only been screened out in the screening process stage
Ground-slag enters next processing stage, and most of waste residue cannot be handled, second is that waste residue partial size≤2.5mm ground-slag all needs powder
Mill processing, need to consume big energy, if entire process flow process control is unreasonable, it is possible to cause processing cost compared with
It is high.
Summary of the invention
For disadvantages described above, the technical problem to be solved by the present invention is to provide a kind of sides of mixing plant waste residue production concrete
Method achievees the purpose that mixing plant waste residue comprehensive reutilization.
The method of mixing plant waste residue production concrete of the present invention, includes the following steps:
A, the mixing plant waste residue by moisture content lower than 5wt% sieves, and obtains partial size >=70mm component D and partial size <
The waste residue of 70mm；
B, the moisture content for controlling the waste residue of partial size < 70mm is lower than 1wt%, and sieving sub-elects partial size≤3mm waste residue work
For component A, partial size >=31.5mm waste residue is component B, remaining waste residue is component C；Component A is milled, is obtained levigate
Component A afterwards；
C, by the group assignment system of following parts by weight, concrete is obtained:
Preferably, in a step, mixing plant waste residue of the moisture content lower than 5wt% is formed by mixing plant waste residue natural air drying
's.
Preferably, it in b step, after the waste residue of partial size < 70mm is mixed with coarse aggregate, controls its moisture content and is lower than
1wt%, sieving.
As preferred method, in b step, the weight ratio of waste residue and coarse aggregate is 15~30:1.
Preferably, it after component B and component D is broken, is used as regenerated coarse aggregate.
Preferably, 300~600m of specific surface area of the component A after levigate2/kg。
Preferably, in step c, coarse aggregate is the rubble or cobble of 5~31.5mm continuous grading.
Preferably, in step c, fine aggregate is at least one of washing Machine-made Sand, river sand.Admixture is flyash, mine
At least one of powder, mountain flour, for example, admixture is s95 grades of miberal powders and level-one flyash.Additive be polycarboxylic acids pumping admixture,
At least one of water-reducing agent, for example, additive is high performance water reducing agent of polyocarboxy acid.
Preferably, in step c, by the group assignment system of following parts by weight, concrete is obtained:
The present invention also provides the concrete that the method for the present invention is prepared.
Concrete of the present invention produces to obtain using the method for above-mentioned mixing plant waste residue production concrete.The original of the concrete
Material uses part waste residue, at low cost, and concrete quality is stablized, and intensity can reach C20~C40 strength grade.
Compared with prior art, the invention has the following beneficial effects:
The present invention, come concrete batching, not only reduces the cost of raw material using mixing plant waste residue, alleviates raw material pressure, subtracts
Raw material usage is lacked, additionally it is possible to which the waste residue that overall treatment mixing plant generates makes its waste residue zero-emission, reached green production mesh
's.
The present invention uses the prepared concrete of mixing plant waste residue, and workability is good, intensity is met the requirements, and setting time can
With by adjusting the control of the dosage of additive, the construction time, concrete construction was convenient convenient for control, and preparation method is simply easy
Row, the waste residue because of addition Jing Guo low-cost processes, reduce the production cost of concrete, can be widely applied.
Specific embodiment
The method of mixing plant waste residue production concrete of the present invention, includes the following steps:
A, the mixing plant waste residue by moisture content lower than 5wt% sieves, and obtains partial size >=70mm component D and partial size <
The waste residue of 70mm；
B, the moisture content for controlling the waste residue of partial size < 70mm is lower than 1wt%, and sieving sub-elects partial size≤3mm waste residue work
For component A, partial size >=31.5mm waste residue is component B, remaining waste residue is component C；Component A is milled, is obtained levigate
Component A afterwards；
C, by the group assignment system of following parts by weight, concrete is obtained:
The method of mixing plant waste residue production concrete of the present invention, part flyash is substituted using concrete mixing plant waste residue
And mix aggregate concrete batching, it can make full use of mixing plant waste residue, reduce concrete production cost, obtained coagulation soil property
Amount is stablized, and C25 strength grade can be reached.
Preferably, in a step, mixing plant waste residue of the moisture content lower than 5wt% is formed by mixing plant waste residue natural air drying
's.
Preferably, it in b step, after the waste residue of partial size < 70mm is mixed with coarse aggregate, controls its moisture content and is lower than
1wt%, sieving.Since viscosity component is more in waste residue, viscosity is larger, in screening, blocking of reuniting is easy, to be unfavorable for sieving
Point, reduce the service life of screening plant.It is therefore, dry after being preferably mixed with coarse aggregate waste residue in order to be easier to carry out screening,
Then it is sieved.
As preferred method, in b step, according to the demand of various different labels concrete, the weight of waste residue and coarse aggregate
Than for 15~30:1.
In order to which waste residue to be fully utilized, reach the standard of waste residue zero-emission, it is preferred that component B and component D are crushed to properly
After partial size, used as regenerated coarse aggregate.
The alternative part flyash of component A, component A need to carry out grinding or other means are taken to be handled, due to
Component A is the flyash substituted in cementitious material, and component A is needed to have certain activity, if not levigate, component A activity
It is very low, after mixing concrete, it can affect to the intensity of concrete.
Preferably, 300~600m of specific surface area of the component A after levigate2/ kg can be according to grinding time in actual production
Length determine specific surface area.
Preferably, in step c, coarse aggregate is the rubble or cobble of 5~31.5mm continuous grading.
Preferably, in step c, fine aggregate is at least one of washing Machine-made Sand, river sand.Admixture is flyash, mine
At least one of powder, mountain flour, for example, admixture is s95 grades of miberal powders and level-one flyash.Additive be polycarboxylic acids pumping admixture,
At least one of water-reducing agent, for example, additive is high performance water reducing agent of polyocarboxy acid.Wherein, mountain flour is inert material, itself
Activity it is lower, preferably mountain flour collocation one of flyash or miberal powder use, i.e., preferably, admixture be flyash, miberal powder,
Flyash+miberal powder, mountain flour+miberal powder or mountain flour+flyash."+" in the present invention is the meaning of "and".
Preferably, in step c, by the group assignment system of following parts by weight, concrete is obtained:
Concrete of the present invention produces to obtain using the method for above-mentioned mixing plant waste residue production concrete.The original of the concrete
Material uses part waste residue, at low cost, and concrete quality is stablized, and intensity can reach C20~C40 strength grade.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
Mixing plant waste residue is handled using air-dried, stirring, drying, screening, grinding program, the specific method is as follows:
Mixing plant waste residue natural air drying to moisture content is lower than 5wt%, is then sieved, it is useless to sift out partial size >=70mm
Slag is component D, and remainder is the waste residue of partial size < 70mm；
The waste residue of partial size < 70mm is carried out mixing drying according to a certain percentage with coarse aggregate by stirring drier, makes to contain
Water rate is lower than 2wt%, is sieved after drying, and sub-electing partial size≤3mm ground-slag is component A, and partial size >=31.5mm is component B；It is surplus
Remaining is component C；After component B and component D is broken, it is put into coarse aggregate storehouse, is used as coarse aggregate.
Component A carries out milling processing, makes 300~400m of its specific surface area2/kg。
Concrete batching (C30) in accordance with the following methods:
Weigh cement 270kg, 5~31.5mm continuous grading rubble 1050kg respectively with weighing balance, fine aggregate washes mechanism
Sand 850kg, admixture high-quality I grade of flyash 20kg, miberal powder 20kg, component A 40kg, mixing water 150kg, the poly- carboxylic of additive
Rubble, sand, cement, flyash are successively added in blender and are stirred evenly by sour retardation setting type pumping admixture 6.2kg, while additive
It must be added in concrete mixing water first and go to mix, water and additive mixing liquid are then added to concrete mixer
In, after 1~2.5min is sufficiently stirred, concrete mix is drawn off from blender, it is transported by concrete tank to construction site,
Carry out subsequent construction.Three parallel laboratory test groups, respectively experimental group 1, experimental group 2 and experimental group 3 are designed, control group 1 is designed,
Only to remove component A, and flyash dosage is improved to 60kg.Measure the performance of the concrete, result such as table 1.
Table 1
Concrete batching (C25) in accordance with the following methods:
Weigh cement 240kg respectively with weighing balance, 5~31.5mm continuous grading rubble 1000kg, component C50kg, thin bone
Material washing Machine-made Sand 900kg, admixture high-quality I grade of flyash 20kg, miberal powder 20kg, component A 30kg, mixing water 150kg,
Rubble, sand, cement, flyash are successively added in blender and are stirred evenly by additive polycarboxylic acid retarding type pumping admixture 5.0kg,
Additive must be added in concrete mixing water first simultaneously goes to mix, and is then added to water and additive mixing liquid mixed
In solidifying soil blender, after 1~2.5min is sufficiently stirred, concrete mix is drawn off from blender, is transported by concrete tank
To construction site, subsequent construction is carried out.Three parallel laboratory test groups, respectively experimental group 1, experimental group 2 and experimental group 3 are designed,
Design control group 1~3.Control group 1 is to remove component A, and flyash dosage is improved to 50kg.Control group 2 is to remove component
C, and rubble dosage is improved to 1050kg.Control group 3 is to remove component A and C, and flyash dosage is improved to 50kg, will
Rubble dosage is improved to 1050kg.Measure the performance of the concrete, result such as table 2.
Table 2
Embodiment 2
Component A and component C are obtained using the method for embodiment 1.
Component A carries out milling processing, makes 400~500m of specific surface area of component A2/kg。
Concrete batching (C25) in accordance with the following methods:
Weigh cement 240kg respectively with weighing balance, 5~31.5mm continuous grading rubble 1000kg, component C50kg, thin bone
Material washing Machine-made Sand 900kg, admixture high-quality I grade of flyash 20kg, miberal powder 20kg, component A 30kg, mixing water 150kg,
Rubble, sand, cement, flyash are successively added in blender and are stirred evenly by additive polycarboxylic acid retarding type pumping admixture 5.0kg,
Additive must be added in concrete mixing water first simultaneously goes to mix, and is then added to water and additive mixing liquid mixed
In solidifying soil blender, after 1~2.5min is sufficiently stirred, concrete mix is drawn off from blender, is transported by concrete tank
To construction site, subsequent construction is carried out.Design two parallel laboratory test groups, respectively experimental group 1 and experimental group 2, design control
Group 1~3.Control group 1 is to remove component A, and flyash dosage is improved to 50kg.Control group 2 is to remove component C, and will be broken
Stone dosage is improved to 1050kg.Control group 3 is to remove component A and C, and flyash dosage is improved to 50kg, by rubble dosage
It improves to 1050kg.Measure the performance of the concrete, result such as table 3.
Table 3
Embodiment 3
Component A and component C are obtained using the method for embodiment 1.
Component A carries out milling processing, makes 500~600m of partial size of component A2/kg。
Concrete batching (C25) in accordance with the following methods:
Weigh cement 240kg respectively with weighing balance, 5~31.5mm continuous grading rubble 1000kg, component C50kg, thin bone
Material washing Machine-made Sand 900kg, admixture high-quality I grade of flyash 20kg, miberal powder 20kg, component A 30kg, mixing water 150kg,
Rubble, sand, cement, flyash are successively added in blender and are stirred evenly by additive polycarboxylic acid retarding type pumping admixture 5.0kg,
Additive must be added in concrete mixing water first simultaneously goes to mix, and is then added to water and additive mixing liquid mixed
In solidifying soil blender, after 1~2.5min is sufficiently stirred, concrete mix is drawn off from blender, is transported by concrete tank
To construction site, subsequent construction is carried out.Design two parallel laboratory test groups, respectively experimental group 1 and experimental group 2, design control
Group 1~3.Control group is to remove component A and C, and flyash dosage is improved to 50kg, and rubble dosage is improved to 1050kg.
Measure the performance of the concrete, result such as table 4.
Table 4
Claims (10)
1. the method for mixing plant waste residue production concrete, which comprises the steps of:
A, the mixing plant waste residue by moisture content lower than 5wt% sieves, and obtains partial size >=70mm component D and partial size < 70mm
Waste residue；
B, the moisture content for controlling the waste residue of partial size < 70mm is lower than 1wt%, and sieving sub-elects partial size≤3mm waste residue as group
Divide A, partial size >=31.5mm waste residue is component B, remaining waste residue is component C；Component A is milled, obtain it is levigate after
Component A；
C, by the group assignment system of following parts by weight, concrete is obtained:
2. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: in a step, moisture content
Mixing plant waste residue lower than 5wt% is as made of mixing plant waste residue natural air drying.
3. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: in b step, by partial size
After the waste residue of < 70mm is mixed with coarse aggregate, its moisture content is controlled lower than 1wt%, sieving.
4. the method for mixing plant waste residue according to claim 3 production concrete, it is characterised in that: in b step, waste residue with
The weight ratio of coarse aggregate is 15~30:1.
5. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: component B and component D is broken
After broken, used as coarse aggregate.
6. the method for mixing plant waste residue according to claim 1 production concrete, it is characterised in that: it is described it is levigate after group
Divide 300~600m of specific surface area of A2/kg。
7. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: in step c, coarse aggregate
For the rubble or cobble of 5~31.5mm continuous grading.
8. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: in step c, fine aggregate
For at least one of washing Machine-made Sand, river sand；Admixture is at least one of flyash, miberal powder, mountain flour；Additive is poly-
At least one of carboxylic acid pumping admixture, water-reducing agent.
9. the method for mixing plant waste residue production concrete according to claim 1, it is characterised in that: in step c, by following
The group assignment system of parts by weight, obtains concrete:
10. a kind of concrete, which is characterized in that produce concrete using mixing plant waste residue according to any one of claims 1 to 9
Method produce to obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875256.XA CN110451872A (en) | 2019-09-17 | 2019-09-17 | The method of mixing plant waste residue production concrete and obtained concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875256.XA CN110451872A (en) | 2019-09-17 | 2019-09-17 | The method of mixing plant waste residue production concrete and obtained concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110451872A true CN110451872A (en) | 2019-11-15 |
Family
ID=68492170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910875256.XA Pending CN110451872A (en) | 2019-09-17 | 2019-09-17 | The method of mixing plant waste residue production concrete and obtained concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110451872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116040982A (en) * | 2023-01-17 | 2023-05-02 | 中建商品混凝土有限公司 | Waste residue-based hydrophobic high-performance concrete admixture and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637362A (en) * | 1993-08-20 | 1997-06-10 | Louisiana-Pacific Corporation | Thin, sealant-coated, fiber-reinforced gypsum panel |
| CN1526485A (en) * | 2003-09-18 | 2004-09-08 | 黄浩庭 | Recovering method of waste concrete and use of recovered material |
| CN105366974A (en) * | 2015-11-20 | 2016-03-02 | 广州大学 | Method for preparation of regenerated fine powder from concrete mixing station waste residue, prepared regenerated fine powder and use thereof |
| CN105985075A (en) * | 2015-02-28 | 2016-10-05 | 香港理工大学 | Recycling and reusing method of cement concrete waste |
| CN106396534A (en) * | 2016-08-24 | 2017-02-15 | 绍兴文理学院 | Quick repair concrete prepared from concrete mixing station wastewater drying powder |
-
2019
- 2019-09-17 CN CN201910875256.XA patent/CN110451872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637362A (en) * | 1993-08-20 | 1997-06-10 | Louisiana-Pacific Corporation | Thin, sealant-coated, fiber-reinforced gypsum panel |
| CN1526485A (en) * | 2003-09-18 | 2004-09-08 | 黄浩庭 | Recovering method of waste concrete and use of recovered material |
| CN105985075A (en) * | 2015-02-28 | 2016-10-05 | 香港理工大学 | Recycling and reusing method of cement concrete waste |
| CN105366974A (en) * | 2015-11-20 | 2016-03-02 | 广州大学 | Method for preparation of regenerated fine powder from concrete mixing station waste residue, prepared regenerated fine powder and use thereof |
| CN106396534A (en) * | 2016-08-24 | 2017-02-15 | 绍兴文理学院 | Quick repair concrete prepared from concrete mixing station wastewater drying powder |
Non-Patent Citations (1)
| Title |
|---|
| 梅晓东等: "混凝土搅拌站废水、废渣回收利用技术研究", 《辽宁科技学院学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116040982A (en) * | 2023-01-17 | 2023-05-02 | 中建商品混凝土有限公司 | Waste residue-based hydrophobic high-performance concrete admixture and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102850011B (en) | Technological process for preparing active powder concrete by using iron tailing | |
| CN109437718A (en) | A kind of C40 grades of large dosage solid waste concrete and preparation method thereof | |
| CN110041028A (en) | A kind of regeneration concrete and preparation method thereof using building waste | |
| CN105948545A (en) | Production technology of ecological concrete | |
| CN104556866B (en) | A kind of mine tailing stone flour wet-mixing motar | |
| CN109664406A (en) | A kind of building castoff recycling treatment system | |
| CN103936369B (en) | C30 level simple grain level regeneration self-compacting concrete and preparation method thereof | |
| CN107686298B (en) | A kind of self-compaction composite concrete and preparation method thereof | |
| CN104150794B (en) | A kind of preparation method of iron tailings portland cement | |
| CN102765889A (en) | Preparation method for tailing barren rock-made high-strength concrete containing coal ash | |
| CN102653464A (en) | Dry-mixed mortar | |
| CN109675906A (en) | A kind of wholly-owned source recycling and reusing system of building castoff | |
| CN101638924B (en) | Limestone tailing-bricks and preparation method thereof | |
| CN113121131B (en) | Cement clinker produced by using low-grade marble limestone and preparation method thereof | |
| CN110498651A (en) | A kind of concrete and preparation method thereof containing copper tailing | |
| CN103979807A (en) | Construction waste regenerated high-activity mineral admixture and preparation thereof | |
| CN113213802A (en) | High-performance concrete admixture and production method thereof | |
| CN102581922A (en) | Preparation method for aerated concrete building blocks of quartz vein type gold mine tailings | |
| CN110451872A (en) | The method of mixing plant waste residue production concrete and obtained concrete | |
| CN106336171A (en) | Circulating fluidized bed composite ash concrete and production method thereof | |
| CN112341086A (en) | Large-mixing-amount solid waste concrete and preparation method thereof | |
| CN115849811B (en) | High-stability self-compaction concrete and preparation method thereof | |
| CN110482925A (en) | A kind of high-strength concrete and its preparation process | |
| CN106220061A (en) | Concrete prepared by a kind of mine tailing waste residue replacement flyash and fine aggregate | |
| CN105366972B (en) | A kind of waste material of stone cement for the grinding process and preparation for improving waste material of stone cement mixture grain composition |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191115 |