CN105236842A - Anti-seep underground pipe culvert and preparation method thereof - Google Patents
Anti-seep underground pipe culvert and preparation method thereof Download PDFInfo
- Publication number
- CN105236842A CN105236842A CN201510528100.6A CN201510528100A CN105236842A CN 105236842 A CN105236842 A CN 105236842A CN 201510528100 A CN201510528100 A CN 201510528100A CN 105236842 A CN105236842 A CN 105236842A
- Authority
- CN
- China
- Prior art keywords
- weight part
- pipe culvert
- antiseep
- consumption
- underground pipe
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an anti-seep underground pipe culvert. The anti-seep underground pipe culvert is prepared from cement, gravels, river sands, pulverized fuel ash, dicumyl peroxide, polyisobutene, ethyl carbamate, hydroxytrimethylsilane, water, an air entraining agent and water reducer. The invention further discloses a method for preparing the anti-seep underground pipe culvert. The method comprises the following steps of (1) mixing the cement, the gravels, the river sands, the pulverized fuel ash, the dicumyl peroxide, the polyisobutene, the ethyl carbamate, the hydroxytrimethylsilane, the air entraining agent and the water reducer to prepare a mixture M1; (2) pouring the mixture M1 into a reinforcement cage to form a pipe culvert blank body; and (3) maintaining the pipe culvert blank body to obtain the anti-seep underground pipe culvert. The anti-seep underground pipe culvert prepared by the method has an excellent water seepage prevention function, and has relatively high compressive strength and splitting tensile strength.
Description
Technical field
The present invention relates to cement pipe preparation field, particularly, relate to a kind of antibacterial underground pipe culvert and preparation method thereof.
Background technology
Underground pipe culvert, refers to the water pipe being embedded in underground, can be used as the water channel of below ground elevation.Pipe culvert is the structures in road and rail engineering, generally refers to pipe culvert, exactly with the culvert that a section pipe that Steel Concrete is made is made.
Because concrete is after pouring completes, inherently there are some spaces in inside, under the impact being subject to effect of water pressure for a long time, inside concrete space can increase, even there is crack, therefore, when the reinforcement of concrete is in time building underground pipe culvert, due to the existence of underground water, therefore, very large requirement is had, the concrete water-proof poor performance prepared in prior art, the danger of even caving in of may ftractureing when being subject to hydraulic pressure effect for a long time to concrete water-impervious performance.
Summary of the invention
The object of this invention is to provide a kind of antiseep underground pipe culvert and preparation method thereof, the antiseep underground pipe culvert prepared by the method has excellent water-impervious performance, has higher ultimate compression strength and tensile splitting strength simultaneously.
To achieve these goals, the invention provides antiseep underground pipe culvert, this antiseep underground pipe culvert contains cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, water, air entraining agent and water reducer.
Present invention also offers the preparation method of a kind of antiseep underground pipe culvert, this preparation method comprises:
(1) by obtained for the mixing of cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, air entraining agent and water reducer mixture M 1;
(2) mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) pipe culvert idiosome is carried out maintenance and obtain antiseep underground pipe culvert;
Pass through technique scheme, antiseep underground provided by the invention pipe culvert be by by cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, air entraining agent and water reducer mixing after-pouring in Framework Of Steel Reinforcement to form pipe culvert idiosome, then carry out maintenance preparation and obtain.In preparation process, act synergistically between these five kinds of components of flyash, dicumyl peroxide, polyisobutene, urethanum and trimethyl silanol, make the antiseep underground pipe culvert obtained have excellent water-impervious performance, there is higher ultimate compression strength and tensile splitting strength simultaneously.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of antiseep underground pipe culvert, it is characterized in that, described antiseep underground pipe culvert contains cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, water, air entraining agent and water reducer.
In the present invention, the weight-average molecular weight of polyisobutene can be selected in wide scope, in order to the ultimate compression strength and the tensile splitting strength that make the antiseep underground pipe culvert obtained have more excellent water-impervious performance and Geng Gao, preferably, the weight-average molecular weight of polyisobutene is 8000-14000.
Simultaneously, the content of each component all can be selected in wide scope, in order to the ultimate compression strength and the tensile splitting strength that make the antiseep underground pipe culvert obtained have more excellent water-impervious performance and Geng Gao, preferably, relative to the stone of 100 weight parts, the content of cement is 35-45 weight part, the content of river sand is 45-50 weight part, the content of flyash is 25-35 weight part, the content of dicumyl peroxide is 15-25 weight part, the content of polyisobutene is 25-40 weight part, the content of urethanum is 12-18 weight part, the content of trimethyl silanol is 6-10 weight part, the content of water is 30-35 weight part, the content of air entraining agent is 2-6 weight part, the content of water reducer is 3-5 weight part.
Similarly, the concrete kind of air entraining agent can be selected in wide scope, in order to improve ultimate compression strength and the tensile splitting strength of obtained water-impervious performance, preferably, air entraining agent be selected from rosin acid sodium, sodium napthionate and calcium naphthenate one or more.
In addition, the concrete kind of water reducer also can be selected in wide scope, it can be lignin sulfonate water reducer, naphthalene class water reducer, melamine class water reducer, thionamic acid salt water reducer, one or more in fatty acid aqua and polycarboxylic acid salt's water reducer, consider from water-reducing effect, preferably, described water reducer is lignin sulfonate water reducer.
Present invention also offers the preparation method of a kind of antiseep underground pipe culvert, this preparation method comprises:
(1) by obtained for the mixing of cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, air entraining agent and water reducer mixture M 1;
(2) mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) pipe culvert idiosome is carried out maintenance and obtain antiseep underground pipe culvert;
In above-mentioned preparation method, the weight-average molecular weight of polyisobutene can be selected in wide scope, in order to the ultimate compression strength and the tensile splitting strength that make the antiseep underground pipe culvert obtained have more excellent water-impervious performance and Geng Gao, preferably, the weight-average molecular weight of polyisobutene is 8000-14000.
Simultaneously, the consumption of each component all can be selected in wide scope, in order to the ultimate compression strength and the tensile splitting strength that make the antiseep underground pipe culvert obtained have more excellent water-impervious performance and Geng Gao, preferably, relative to the stone of 100 weight parts, the consumption of cement is 35-45 weight part, the consumption of river sand is 45-50 weight part, the consumption of flyash is 25-35 weight part, the consumption of dicumyl peroxide is 15-25 weight part, the consumption of polyisobutene is 25-40 weight part, the consumption of urethanum is 12-18 weight part, the consumption of trimethyl silanol is 6-10 weight part, the consumption of water is 30-35 weight part, the consumption of air entraining agent is 2-6 weight part, the consumption of water reducer is 3-5 weight part.
Similarly, the time of maintenance and temperature all do not do special restriction, in order to the ultimate compression strength and the tensile splitting strength that make the antibacterial underground pipe culvert obtained have more excellent bacteriostasis property and Geng Gao, preferably, maintenance at least meets the following conditions: curing temperature is 25-40 DEG C, and curing time is 6-8d.
Certainly, the concrete kind of air entraining agent can be selected in wide scope, in order to improve ultimate compression strength and the tensile splitting strength of obtained water-impervious performance, preferably, air entraining agent be selected from rosin acid sodium, sodium napthionate and calcium naphthenate one or more.
In addition, the concrete kind of water reducer also can be selected in wide scope, it can be lignin sulfonate water reducer, naphthalene class water reducer, melamine class water reducer, thionamic acid salt water reducer, one or more in fatty acid aqua and polycarboxylic acid salt's water reducer, consider from water-reducing effect, preferably, described water reducer is lignin sulfonate water reducer.
Below will be described the present invention by embodiment.In following examples, the ultimate compression strength after antiseep buried pipe self-restraint protects 7 days and tensile splitting strength parameter detect according to standard GB/T/T50081-2002 and obtain.Dicumyl peroxide is the commercially available product in reagent chemical plant, Taixing City, polyisobutene is the commercially available product of Shanghai Qi Cheng Industrial Co., Ltd., urethanum is purchased from Jinan Hong Yi Chemical Co., Ltd., and trimethyl silanol expands chemical technology company limited purchased from, BeiJing ZhongKe.
Embodiment 1
(1) at 25 DEG C, by cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene (weight-average molecular weight is 11000), urethanum, trimethyl silanol, water, rosin acid sodium and the obtained mixture M 1 of lignin sulfonate water reducer (weight ratio is 40:100:48:30:20:35:16:8:32:4:4) mixing;
(2) described mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) described pipe culvert idiosome maintenance 7d at 30 DEG C is obtained antiseep underground pipe culvert A1.
Embodiment 2
(1) at 25 DEG C, by cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene (weight-average molecular weight is 8000), urethanum, trimethyl silanol, water, sodium napthionate and the obtained mixture M 1 of lignin sulfonate water reducer (weight ratio is 35:100:45:25:15:25:12:6:30:2:3) mixing;
(2) described mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) described pipe culvert idiosome maintenance 8d at 25 DEG C is obtained antiseep underground pipe culvert A2.
Embodiment 3
(1) at 25 DEG C, by cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene (weight-average molecular weight is 14000), urethanum, trimethyl silanol, water, calcium naphthenate and the obtained mixture M 1 of lignin sulfonate water reducer (weight ratio is 45:100:50:35:25:40:18:10:35:6:5) mixing;
(2) described mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) described pipe culvert idiosome maintenance 6d at 40 DEG C is obtained antiseep underground pipe culvert A3.
Comparative example 1
Antiseep underground pipe culvert B1 is obtained according to the method for embodiment 1, unlike, do not use flyash.
Comparative example 2
Antiseep underground pipe culvert B2 is obtained according to the method for embodiment 1, unlike, do not use dicumyl peroxide.
Comparative example 3
Antiseep underground pipe culvert B3 is obtained according to the method for embodiment 1, unlike, do not use polyisobutene.
Comparative example 4
Antiseep underground pipe culvert B4 is obtained according to the method for embodiment 1, unlike, do not use urethanum.
Comparative example 5
Antiseep underground pipe culvert B5 is obtained according to the method for embodiment 1, unlike, do not use trimethyl silanol.
Test example 1
By antiseep underground pipe culvert cutting sampling, detected sample being put into back cut diameter is 70mm, lower port diameter is 80mm, height is the shaping benchmark of frustum of a cone band substrate die trial of 30mm and is inspected part, test specimen is built quiet stopping by shaping rear plastic cloth, puts into 20 DEG C of water maintenances to 7d after the demoulding, takes out after surface drying, load in permeability testing machine with sealing material sealing and carry out seepage pressure detection, one group with 6 test specimens.
Hydraulic pressure is from 0.2MPa, and constant voltage 2h, increases to 0.3MPa, later every 1h, increases hydraulic pressure 0.1MPa, when there being three surface of test piece to present infiltration phenomenon in six test specimens, stops test, and record hydraulic pressure, concrete detected result is in table 1.
Table 1
Ultimate compression strength (MPa) | Tensile splitting strength (MPa) | Seepage pressure (MPa) | |
A1 | 36.75 | 2.79 | 1.5 |
A2 | 37.28 | 2.87 | 1.4 |
A3 | 37.54 | 2.84 | 1.4 |
B1 | 21.81 | 1.81 | 0.5 |
B2 | 22.79 | 1.91 | 0.6 |
B3 | 20.35 | 2.06 | 0.4 |
B4 | 21.85 | 1.98 | 0.6 |
B5 | 20.94 | 1.96 | 0.6 |
As shown in Table 1, antiseep underground provided by the invention pipe culvert has excellent ultimate compression strength, tensile splitting strength and leakage performance.Relative to A1-A3, the ultimate compression strength of B1-B5, tensile splitting strength and seepage water pressure all obviously reduce, describe between these five kinds of components of flyash, dicumyl peroxide, polyisobutene, urethanum and trimethyl silanol and act synergistically, make the antiseep underground pipe culvert obtained have excellent water-impervious performance, there is higher ultimate compression strength and tensile splitting strength simultaneously.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. an antiseep underground pipe culvert, is characterized in that, described antiseep underground pipe culvert contains cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, water, air entraining agent and water reducer.
2. antiseep underground according to claim 1 pipe culvert, wherein, the weight-average molecular weight of described polyisobutene is 8000-14000.
3. antiseep underground according to claim 2 pipe culvert, wherein, relative to the described stone of 100 weight parts, the content of described cement is 35-45 weight part, the content of described river sand is 45-50 weight part, the content of described flyash is 25-35 weight part, the content of described dicumyl peroxide is 15-25 weight part, the content of described polyisobutene is 25-40 weight part, the content of described urethanum is 12-18 weight part, the content of described trimethyl silanol is 6-10 weight part, the content of described water is 30-35 weight part, the content of described air entraining agent is 2-6 weight part, the content of described water reducer is 3-5 weight part.
4. according to the antiseep underground pipe culvert in claim 1-3 described in any one, wherein, described air entraining agent is selected from one or more in rosin acid sodium, sodium napthionate and calcium naphthenate.
5. according to the antiseep underground pipe culvert in claim 1-3 described in any one, wherein, described water reducer is lignin sulfonate water reducer.
6. a preparation method for antiseep underground pipe culvert, is characterized in that, described preparation method comprises:
(1) by obtained for the mixing of cement, stone, river sand, flyash, dicumyl peroxide, polyisobutene, urethanum, trimethyl silanol, air entraining agent and water reducer mixture M 1;
(2) described mixture M 1 is built in Framework Of Steel Reinforcement to form pipe culvert idiosome;
(3) described pipe culvert idiosome is carried out maintenance and obtain antiseep underground pipe culvert.
7. preparation method according to claim 6, wherein, the weight-average molecular weight of described polyisobutene is 8000-14000.
8. preparation method according to claim 6, wherein, relative to the described stone of 100 weight parts, the consumption of described cement is 35-45 weight part, the consumption of described river sand is 45-50 weight part, the consumption of described flyash is 25-35 weight part, the consumption of described dicumyl peroxide is 15-25 weight part, the consumption of described polyisobutene is 25-40 weight part, the consumption of described urethanum is 12-18 weight part, the consumption of described trimethyl silanol is 6-10 weight part, the consumption of described water is 30-35 weight part, the consumption of described air entraining agent is 2-6 weight part, the consumption of described water reducer is 3-5 weight part.
9. according to the preparation method in claim 6-8 described in any one, wherein, described maintenance at least meets the following conditions: curing temperature is 25-40 DEG C, and curing time is 6-8d.
10. according to the preparation method in claim 6-8 described in any one, wherein, described air entraining agent is selected from one or more in rosin acid sodium, sodium napthionate and calcium naphthenate;
Preferably, described water reducer is lignin sulfonate water reducer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510528100.6A CN105236842A (en) | 2015-08-24 | 2015-08-24 | Anti-seep underground pipe culvert and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510528100.6A CN105236842A (en) | 2015-08-24 | 2015-08-24 | Anti-seep underground pipe culvert and preparation method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105236842A true CN105236842A (en) | 2016-01-13 |
Family
ID=55034724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510528100.6A Pending CN105236842A (en) | 2015-08-24 | 2015-08-24 | Anti-seep underground pipe culvert and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105236842A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105801030A (en) * | 2016-04-15 | 2016-07-27 | 安徽砼宇特构科技有限公司 | Corrosion-resistant underground pipe culvert and preparing method thereof |
CN105819768A (en) * | 2016-03-24 | 2016-08-03 | 安徽砼宇特构科技有限公司 | Waterproof underground pipe culvert and preparing method thereof |
CN105862971A (en) * | 2016-03-24 | 2016-08-17 | 安徽砼宇特构科技有限公司 | Seepage-proofing covered channel and preparation method thereof |
CN105859209A (en) * | 2016-03-24 | 2016-08-17 | 安徽砼宇特构科技有限公司 | Anti-cracking underground pipe culvert and preparation method therefor |
CN105859204A (en) * | 2016-04-15 | 2016-08-17 | 安徽砼宇特构科技有限公司 | High-stability underground pipe culvert and preparing method thereof |
CN105906252A (en) * | 2016-04-15 | 2016-08-31 | 安徽砼宇特构科技有限公司 | Seepage prevention underground pipe culvert and preparation method thereof |
CN107540290A (en) * | 2017-10-31 | 2018-01-05 | 河北水利电力学院 | A kind of civil engineering scour and abrasion resistant concrete and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010232A (en) * | 1974-09-11 | 1977-03-01 | Roger Labrecque | Method of making a composite urethane foam and concrete construction panel |
CN1454142A (en) * | 2000-08-14 | 2003-11-05 | 格雷斯公司 | Particle coated bonding systems for hydratable cementitious composition casting and methods for making same |
CN101672035A (en) * | 2009-09-22 | 2010-03-17 | 广东建华管桩有限公司 | High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof |
CN102498077A (en) * | 2009-09-01 | 2012-06-13 | 建筑研究和技术有限公司 | Polycondensates having isobutylene side chain |
-
2015
- 2015-08-24 CN CN201510528100.6A patent/CN105236842A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010232A (en) * | 1974-09-11 | 1977-03-01 | Roger Labrecque | Method of making a composite urethane foam and concrete construction panel |
CN1454142A (en) * | 2000-08-14 | 2003-11-05 | 格雷斯公司 | Particle coated bonding systems for hydratable cementitious composition casting and methods for making same |
CN102498077A (en) * | 2009-09-01 | 2012-06-13 | 建筑研究和技术有限公司 | Polycondensates having isobutylene side chain |
CN101672035A (en) * | 2009-09-22 | 2010-03-17 | 广东建华管桩有限公司 | High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105819768A (en) * | 2016-03-24 | 2016-08-03 | 安徽砼宇特构科技有限公司 | Waterproof underground pipe culvert and preparing method thereof |
CN105862971A (en) * | 2016-03-24 | 2016-08-17 | 安徽砼宇特构科技有限公司 | Seepage-proofing covered channel and preparation method thereof |
CN105859209A (en) * | 2016-03-24 | 2016-08-17 | 安徽砼宇特构科技有限公司 | Anti-cracking underground pipe culvert and preparation method therefor |
CN105801030A (en) * | 2016-04-15 | 2016-07-27 | 安徽砼宇特构科技有限公司 | Corrosion-resistant underground pipe culvert and preparing method thereof |
CN105859204A (en) * | 2016-04-15 | 2016-08-17 | 安徽砼宇特构科技有限公司 | High-stability underground pipe culvert and preparing method thereof |
CN105906252A (en) * | 2016-04-15 | 2016-08-31 | 安徽砼宇特构科技有限公司 | Seepage prevention underground pipe culvert and preparation method thereof |
CN107540290A (en) * | 2017-10-31 | 2018-01-05 | 河北水利电力学院 | A kind of civil engineering scour and abrasion resistant concrete and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105236842A (en) | Anti-seep underground pipe culvert and preparation method thereof | |
US9435095B2 (en) | Pre-stress corrosion-resistant tubular pile used in special coastal geological conditions and manufacturing method | |
CN106186770B (en) | Activation method of regenerated micro powder | |
CN105347753B (en) | A kind of machine sprays motar | |
CN102850031A (en) | Corrosion-resistant polymer waterproof mortar | |
CN107805024B (en) | C25-grade freeze-thaw resistant pervious concrete | |
CN104326718A (en) | Adhesive mortar for lautoclaved lightweight concrete panel | |
CN104045280B (en) | A kind of C120 super high strength concrete that is easy to super high-rise pumping | |
CN104478275B (en) | Waterproof anti-cracking agent for concrete | |
CN104261749A (en) | Cement based material with strong expanding performance and applications thereof | |
CN105819718A (en) | Concrete high-strength admixture, cement mixture and non-autoclaved ultra-high strength concrete product | |
CN105271990A (en) | Composite modified mortar for air-entrained bricks | |
CN105417980B (en) | A kind of underground structure rigid self-waterproof concrete composite blend | |
CN105272045A (en) | Non-autoclaved PHC pipe pile concrete | |
CN105254228A (en) | Mortar with high salt water resistance for air-entrapping brick | |
CN105218143A (en) | A kind of high ductility aerated bricks mortar | |
CN103601440A (en) | C60 steel pipe self-compacting concrete | |
CN103771806A (en) | Concrete crack repairing waterproof coating | |
CN105198297A (en) | Low-shrinkage mortar for aerated bricks | |
CN104478375B (en) | A kind of lower intensity level concrete with sulphate-corrosion resistance energy | |
CN105174891A (en) | Low-alkali concrete column and preparation method thereof | |
CN105110708A (en) | Corrosion-resistant pipe culvert and preparation method thereof | |
CN105239722B (en) | Foam cement starches column and preparation method thereof | |
CN105174835A (en) | Anti-compression pipe culvert and preparation method thereof | |
CN109053100B (en) | Cement-based high-performance anchoring agent |
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: 20160113 |