CN106116372A - A kind of ceramic whisker concrete tubular pile and preparation method thereof - Google Patents
A kind of ceramic whisker concrete tubular pile and preparation method thereof Download PDFInfo
- Publication number
- CN106116372A CN106116372A CN201610510417.1A CN201610510417A CN106116372A CN 106116372 A CN106116372 A CN 106116372A CN 201610510417 A CN201610510417 A CN 201610510417A CN 106116372 A CN106116372 A CN 106116372A
- Authority
- CN
- China
- Prior art keywords
- add
- stirred
- insulated
- water
- tissuemat
- 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
- C04B28/04—Portland cements
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/383—Whiskers
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2611—Polyalkenes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
nullThe invention discloses a kind of ceramic whisker concrete tubular pile，It is made up of the raw material of following weight parts: ceramics 14 16、Hydrated calcium aluminate sulfate 23、N methyl pyrrolidone 5 10、Portland cement 500 640、Yellow ground 300 400、Polycarboxylate water-reducer 7 15、Tissuemat E 16 20、Dibenzoyl peroxide 0.1 0.2、Maleic anhydride 56、Poly glycol monomethyl ether 23、Ethyl cellulose 47、sp‑80 0.7‑2、Waste rubber powder 50 70、Tributyl citrate 0.8 2、Ethylenediaminetetraacetic acid 0.3 1、Ethoxylated alkylphenol ammonium sulfate 0.8 2、Alkali magnesium sulfate crystal whisker 23、Rubble 200 300，The present invention serves further reinforced effects to the intrusion of suppression carbon dioxide，Harmful hole and defect content in additionally can reducing xoncrete structure,Reduce the alkalescence of hydrated product，Low-intensity hydrated product is promoted to change to high intensity hydrated product.
Description
Technical field
The present invention relates to a kind of ceramic whisker concrete tubular pile, particularly relate to a kind of ceramic whisker concrete tubular pile and system thereof
Preparation Method.
Background technology
Xoncrete structure is one of structure of being most widely used, and there are the building construction of about 70% and the bridge knot of 50% in China
Structure have employed xoncrete structure. and along with these engineering structures use the growth of time, the durability of concrete material and structure is broken
Badly increasingly coming into one's own, many engineering structures are often due to the reason of durability causes use functional deterioration even structure to break
Bad, bring unnecessary loss to society. concrete carbonization is one of important durability index of concrete, due in air
Carbon dioxide and concrete in alkali substance reaction so that concrete presents the process of neutralization and is i.e. referred to as the carbon of concrete
Changing, carbonization makes the reinforcing bar in xoncrete structure lose the protection of passivating film, easily makes reinforcing bar get rusty, and then it is broken to make structure occur
Bad. along with the continuous propelling of process of industrialization, the discharge capacity of carbon dioxide increases, while producing greenhouse effect, to coagulation
The durability of soil structure also creates adverse effect；
The present invention wants to use waste and old rubber powder as modified filler, reduces the carbonization of concrete, but first rubber grain
Surface is nonpolar, and cement matrix is polarity, and both compatibilitys are poor, and under surface tension effects, cement slurry is deviated from
The tension force of rubber particle surface, makes rubber produce crack with cement mortar faying face, and this crack makes concrete density reduce, with
Time provide passage more easily also to the intrusion of carbon dioxide, enhance carbonization effect on the contrary, carbonization to be reduced, first
First to be modified rubber surface processing.
Summary of the invention
Instant invention overcomes prior art not enough, it is provided that a kind of and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of ceramic whisker concrete tubular pile, it is made up of the raw material of following weight parts:
Ceramics 14-16, hydrated calcium aluminate sulfate 2-3, n-methyl pyrrolidone 5-10, Portland cement 500-640, yellow ground
300-400, polycarboxylate water-reducer 7-15, Tissuemat E 16-20, dibenzoyl peroxide 0.1-0.2, maleic anhydride 5-6, poly-second
Glycol monomethyl ether 2-3, ethyl cellulose 4-7, sp-80 0.7-2, waste rubber powder 50-70, tributyl citrate 0.8-2, second
Ethylenediamine tetraacetic acid (EDTA) 0.3-1, ethoxylated alkylphenol ammonium sulfate 0.8-2, alkali magnesium sulfate crystal whisker 2-3, rubble 200-300.
The preparation method of a kind of ceramic whisker concrete tubular pile, comprises the following steps:
(1) above-mentioned Tissuemat E is joined in No. 3 white oils of its weight 3-4 times, add dibenzoyl peroxide, maleic acid
Acid anhydride, insulated and stirred 2-3 hour at 130-140 DEG C, discharging is cooled to room temperature, joins in the acetone of cooling material weight 2-3 times,
It is sufficiently stirred for, filters, be dried, obtain modified polyethylene wax；
(2) ethylenediaminetetraacetic acid is joined in 10-13 times of water, be stirring evenly and then adding into hydrated calcium aluminate sulfate, polycarboxylic acids diminishing
Agent, rises high-temperature and is 50-60 DEG C, and insulated and stirred 30-40 minute obtains modified water reducer；
(3) ethoxylated alkylphenol ammonium sulfate is joined in 8-10 times of water, stir, add alkali magnesium sulfate crystal whisker, lemon
Lemon acid tributyl, insulated and stirred 6-10 minute at 70-80 DEG C, obtain ester emulsion；
(4) above-mentioned modified polyethylene wax is mixed with poly glycol monomethyl ether, adds No. 3 white oils of compound weight 1.8-2 times,
Insulated and stirred 3-4 hour at 80-90 DEG C, adds ester emulsion, reduces temperature and is 30-40 DEG C, insulated and stirred 20-30 minute, sucking filtration,
It is dried, obtains ethyoxyl Tissuemat E；
(5) above-mentioned waste rubber powder is dried, cross 60-100 mesh sieve, add n-methyl pyrrolidone, stir, obtain rubber
Liquid；
(6) ethyoxyl Tissuemat E is joined in 10-12 times of deionized water, add sp-80, stir, add above-mentioned rubber
Glue, insulated and stirred 20-30 minute in the water-bath of 80-90 DEG C, reduces temperature and is 30-40 DEG C, add triethylamine, continue insulation
Stirring 1-2 hour, discharging cools down, filter pressing, dries, obtains ethoxylation rubber；
(7) use establishment machinery to weave steel reinforcement cage, load after steel reinforcement cage establishment in the pipe pile die of required type, make steel
Muscle pipe pile die；
(8) ethoxylation rubber is mixed with modified water reducer, stir, send in blender, add and remain each raw material, add
Enter suitable quantity of water, stir, be injected in above-mentioned reinforced tube pile die, install die cover, carry out stretch-draw, be centrifuged, concrete
Pile tube molding, atmospheric steam curing, control thermostat temperature and be 75-85 DEG C, curing time is 6-10 hour, and steam pressure is put in the demoulding
Still, carries out autoclave curing, and constant-pressure pressure is 0.8-0.9Mpa, cooling, obtains described ceramic whisker concrete tubular pile.
The invention have the advantage that
First ethyoxyl Tissuemat E in the present invention is to be formed with maleic anhydride molecule on the strand of Tissuemat E to hang together knot
Structure, thus on Tissuemat E strand, introduce polar group-COOH, then existed by graft modification with poly glycol monomethyl ether
The carboxyl introduced in molecule carries out esterification, and after esterification, the side chain at grafting wax introduces a certain amount of ethyoxyl, further
Improve the hydrophilic of Tissuemat E, be conducive to, with surfactant, it is carried out emulsifying, obtain stable wax emulsion, meanwhile,
Maleic anhydride is polar molecule, and the Tissuemat E after ethoxylation also has good surface polarity, with rubber liquid blending and modifying
After, the nonpolar property on waste and old rubber particle surface can be improved, strengthen the compatibility with cement matrix, reduce the tension force on surface,
Make rubber more closely knit with cement mortar faying face, improve intensity and the resistance of formation of concrete, thus prevent carbon dioxide
Intrusion, reduce carbonization effect, simultaneously because the incorporation of ethoxylation IR fiber can be effectively improved inside concrete hole knot
Structure, forms a large amount of blind hole, thus stops pore to form the most through network structure system, form " anti-carbonation together
Band ", the intrusion to suppression carbon dioxide serves further reinforced effects, harmful in additionally can reducing xoncrete structure
Hole and defect content, reduce the alkalescence of hydrated product, promotes low-intensity hydrated product to change to high intensity hydrated product；
The present invention adds alkali magnesium sulfate crystal whisker in the modified rubber of ethoxylation, can effectively improve the resistance of rubber
And intensity, the combination effect with cement mortar can be improved simultaneously, improve the density of finished product.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1:
A kind of ceramic whisker concrete tubular pile, it is made up of the raw material of following weight parts:
Ceramics 16, hydrated calcium aluminate sulfate 2, n-methyl pyrrolidone 10, Portland cement 640, yellow ground 400, polycarboxylic acids
Water reducer 15, Tissuemat E 20, dibenzoyl peroxide 0.2, maleic anhydride 5, poly glycol monomethyl ether 2, ethyl cellulose 4,
Sp-80 0.7, waste rubber powder 70, tributyl citrate 0.8, ethylenediaminetetraacetic acid 0.3, ethoxylated alkylphenol ammonium sulfate
0.8, alkali magnesium sulfate crystal whisker 2, rubble 300.
The preparation method of a kind of ceramic whisker concrete tubular pile, comprises the following steps:
(1) above-mentioned Tissuemat E is joined in No. 3 white oils of its weight 3 times, adds dibenzoyl peroxide, maleic anhydride,
Insulated and stirred 2 hours at 140 DEG C, discharging is cooled to room temperature, joins in the acetone of cooling material weight 2 times, is sufficiently stirred for, mistake
Filter, is dried, obtains modified polyethylene wax；
(2) ethylenediaminetetraacetic acid is joined in 13 times of water, is stirring evenly and then adding into hydrated calcium aluminate sulfate, polycarboxylate water-reducer,
Rising high-temperature is 60 DEG C, and insulated and stirred 40 minutes obtains modified water reducer；
(3) ethoxylated alkylphenol ammonium sulfate is joined in 10 times of water, stir, add alkali magnesium sulfate crystal whisker, Fructus Citri Limoniae
Acid tributyl, insulated and stirred 6-10 minute at 80 DEG C, obtain ester emulsion；
(4) above-mentioned modified polyethylene wax is mixed with poly glycol monomethyl ether, No. 3 white oils of addition compound weight 1.8 times, 90
Insulated and stirred 3 hours at DEG C, add ester emulsion, and reducing temperature is 40 DEG C, insulated and stirred 20 minutes, and sucking filtration is dried, obtains ethyoxyl
Tissuemat E；
(5) above-mentioned waste rubber powder is dried, cross 100 mesh sieves, add n-methyl pyrrolidone, stir, obtain rubber liquid；
(6) ethyoxyl Tissuemat E is joined in 12 times of deionized waters, add sp-80, stir, add above-mentioned rubber
Liquid, insulated and stirred 30 minutes in the water-bath of 90 DEG C, reducing temperature is 40 DEG C, adds triethylamine, continues insulated and stirred 2 hours,
Discharging cools down, filter pressing, dries, obtains ethoxylation rubber；
(7) use establishment machinery to weave steel reinforcement cage, load after steel reinforcement cage establishment in the pipe pile die of required type, make steel
Muscle pipe pile die；
(8) ethoxylation rubber is mixed with modified water reducer, stir, send in blender, add and remain each raw material, add
Enter suitable quantity of water, stir, be injected in above-mentioned reinforced tube pile die, install die cover, carry out stretch-draw, be centrifuged, concrete
Pile tube molding, atmospheric steam curing, controlling thermostat temperature is 85 DEG C, and curing time is 10 hours, and the demoulding is put into still kettle, entered
Horizontal high voltage steam curing, constant-pressure pressure is 0.9Mpa, cooling, obtains described ceramic whisker concrete tubular pile.
Performance test:
Impervious detection average seepage pressure 1.1mpa, average infiltration height 20mm；
Freeze thawing resistance circulation reaches more than 500 times；
Sulphate-corrosion resistance can reach more than K120；
Comprcssive strength is 92.6MPa；
Chloride diffusion coefficient is 5.7 × 10-11cm2/ s, permeability is negligible.
Claims (2)
1. a ceramic whisker concrete tubular pile, it is characterised in that it is made up of the raw material of following weight parts:
Ceramics 14-16, hydrated calcium aluminate sulfate 2-3, n-methyl pyrrolidone 5-10, Portland cement 500-640, yellow ground
300-400, polycarboxylate water-reducer 7-15, Tissuemat E 16-20, dibenzoyl peroxide 0.1-0.2, maleic anhydride 5-6, poly-second
Glycol monomethyl ether 2-3, ethyl cellulose 4-7, sp-80 0.7-2, waste rubber powder 50-70, tributyl citrate 0.8-2, second
Ethylenediamine tetraacetic acid (EDTA) 0.3-1, ethoxylated alkylphenol ammonium sulfate 0.8-2, alkali magnesium sulfate crystal whisker 2-3, rubble 200-300.
2. the preparation method of a ceramic whisker concrete tubular pile as claimed in claim 1, it is characterised in that include following step
Rapid:
(1) above-mentioned Tissuemat E is joined in No. 3 white oils of its weight 3-4 times, add dibenzoyl peroxide, maleic acid
Acid anhydride, insulated and stirred 2-3 hour at 130-140 DEG C, discharging is cooled to room temperature, joins in the acetone of cooling material weight 2-3 times,
It is sufficiently stirred for, filters, be dried, obtain modified polyethylene wax；
(2) ethylenediaminetetraacetic acid is joined in 10-13 times of water, be stirring evenly and then adding into hydrated calcium aluminate sulfate, polycarboxylic acids diminishing
Agent, rises high-temperature and is 50-60 DEG C, and insulated and stirred 30-40 minute obtains modified water reducer；
(3) ethoxylated alkylphenol ammonium sulfate is joined in 8-10 times of water, stir, add alkali magnesium sulfate crystal whisker, lemon
Lemon acid tributyl, insulated and stirred 6-10 minute at 70-80 DEG C, obtain ester emulsion；
(4) above-mentioned modified polyethylene wax is mixed with poly glycol monomethyl ether, adds No. 3 white oils of compound weight 1.8-2 times,
Insulated and stirred 3-4 hour at 80-90 DEG C, adds ester emulsion, reduces temperature and is 30-40 DEG C, insulated and stirred 20-30 minute, sucking filtration,
It is dried, obtains ethyoxyl Tissuemat E；
(5) above-mentioned waste rubber powder is dried, cross 60-100 mesh sieve, add n-methyl pyrrolidone, stir, obtain rubber
Liquid；
(6) ethyoxyl Tissuemat E is joined in 10-12 times of deionized water, add sp-80, stir, add above-mentioned rubber
Glue, insulated and stirred 20-30 minute in the water-bath of 80-90 DEG C, reduces temperature and is 30-40 DEG C, add triethylamine, continue insulation
Stirring 1-2 hour, discharging cools down, filter pressing, dries, obtains ethoxylation rubber；
(7) use establishment machinery to weave steel reinforcement cage, load after steel reinforcement cage establishment in the pipe pile die of required type, make steel
Muscle pipe pile die；
(8) ethoxylation rubber is mixed with modified water reducer, stir, send in blender, add and remain each raw material, add
Enter suitable quantity of water, stir, be injected in above-mentioned reinforced tube pile die, install die cover, carry out stretch-draw, be centrifuged, concrete
Pile tube molding, atmospheric steam curing, control thermostat temperature and be 75-85 DEG C, curing time is 6-10 hour, and steam pressure is put in the demoulding
Still, carries out autoclave curing, and constant-pressure pressure is 0.8-0.9Mpa, cooling, obtains described ceramic whisker concrete tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610510417.1A CN106116372A (en) | 2016-07-01 | 2016-07-01 | A kind of ceramic whisker concrete tubular pile and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610510417.1A CN106116372A (en) | 2016-07-01 | 2016-07-01 | A kind of ceramic whisker concrete tubular pile and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106116372A true CN106116372A (en) | 2016-11-16 |
Family
ID=57468955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610510417.1A Pending CN106116372A (en) | 2016-07-01 | 2016-07-01 | A kind of ceramic whisker concrete tubular pile and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106116372A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981390A (en) * | 2019-12-12 | 2020-04-10 | 浙江飞英电力器材有限公司 | Production process method of tubular pile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036647A (en) * | 2015-07-09 | 2015-11-11 | 阜阳三环管桩有限公司 | Anti-carbonization concrete tubular pile and preparation method therefor |
-
2016
- 2016-07-01 CN CN201610510417.1A patent/CN106116372A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036647A (en) * | 2015-07-09 | 2015-11-11 | 阜阳三环管桩有限公司 | Anti-carbonization concrete tubular pile and preparation method therefor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981390A (en) * | 2019-12-12 | 2020-04-10 | 浙江飞英电力器材有限公司 | Production process method of tubular pile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105036647A (en) | Anti-carbonization concrete tubular pile and preparation method therefor | |
| CN106746920A (en) | A kind of transparent resin concrete and preparation method thereof | |
| CN105622023B (en) | A kind of sludge curing agent using clinker | |
| CN108715528A (en) | A kind of permeable pavement brick and preparation method thereof | |
| CN108715530A (en) | A kind of cement group water-proofing material and preparation method thereof | |
| CN106116373A (en) | A kind of many concretes pile tube and preparation method thereof | |
| CN106116372A (en) | A kind of ceramic whisker concrete tubular pile and preparation method thereof | |
| CN108191353A (en) | The lightweight aggregate concrete prepared using discarded clay brick | |
| CN105837738A (en) | Polycarboxylic cationic anti-mud agent, and preparation method and application thereof | |
| CN107986709A (en) | A kind of carbon fiber mesh reinforces dedicated mortar and preparation method | |
| CN106116371A (en) | A kind of carbon silicon Concrete Structure pile tube and preparation method thereof | |
| CN105036644A (en) | Rosin-efficient water-reducing concrete pile, and preparation method therefor | |
| CN106186913A (en) | A kind of Nano filling concrete tubular pile and preparation method thereof | |
| CN105036645A (en) | Stabilized concrete tubular pile and preparation method thereof | |
| CN107573099A (en) | A kind of building concrete penetrant crystalline sealing compound and application process | |
| CN106495579A (en) | A kind of preparation method of bi-component cement based mending mortar | |
| CN106116369A (en) | A kind of black husky concrete tubular pile and preparation method thereof | |
| CN105016682A (en) | Concrete pipe pile and preparation method thereof | |
| CN106186912A (en) | A kind of modified fibre concrete tubular pile and preparation method thereof | |
| CN105060818A (en) | Bauxite and brucite concrete tubular pipe and preparation method therefor | |
| CN105036643A (en) | Composite fiber reinforced concrete pile and preparation method therefor | |
| CN105036648A (en) | Low-cost fly ash concrete pile, and preparation method therefor | |
| CN106186914A (en) | A kind of anticorrosion concrete pile tube and preparation method thereof | |
| CN106186911A (en) | A kind of stove dirt concrete tubular pile and preparation method thereof | |
| CN109748563A (en) | A method of wall block for building is prepared using titanium gypsum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20161116 |