CN105060789A - Cold-resistant concrete box culvert and preparation method thereof - Google Patents
Cold-resistant concrete box culvert and preparation method thereof Download PDFInfo
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- CN105060789A CN105060789A CN201510496994.5A CN201510496994A CN105060789A CN 105060789 A CN105060789 A CN 105060789A CN 201510496994 A CN201510496994 A CN 201510496994A CN 105060789 A CN105060789 A CN 105060789A
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- 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
Abstract
The invention discloses a cold-resistant concrete box culvert and a preparation method thereof. The preparation method comprises the following steps: 1), sludge is soaked in an activation solution, the mixture is filtered, dried and sieved, and activated sludge is prepared; 2), cement, the activated sludge, stone, sand, fly ash and water are mixed, and concrete is prepared; 3), the concrete is poured into a framework of steel reinforcement, and the cold-resistant concrete box culvert is prepared after maintenance, wherein the activation solution contains water, hydrochloric acid, lauric acid and sodium fluosilicate. The cold-resistant concrete box culvert prepared with the method has excellent crack load and failure load indexes.
Description
Technical field
The present invention relates to concrete box culvert, particularly, relate to a kind of cold-resistant concrete box culvert and preparation method thereof.
Background technology
Contain the culvert referring to barrel and build with reinforced concrete box shaped tube coupling.Box culvert is made up of one or more square or rectangular cross-section, is generally made up of Steel Concrete or bricklaying, but Steel Concrete application is wider, when being less than 4m across footpath, adopt box culvert, for pipe culvert, cold-resistant concrete box culvert is a cheap substitute, pier, and upper and lower plates is all unanimously built.
At present, box culvert construct generally adopts cast-in-place, in the groove excavated, bottom is set, build one deck concrete cushion, the more on-the-spot colligation of reinforcing bar that will process, internal mold and external mold, larger box culvert generally first builds lower part of base plate and sidewall, colligation side wall upper part again and roof steel bar, a good interior external mold, builds sidewall upper part and top board.Treat that concrete reaches the intensity form removal of design requirements, backfill soil box culvert both sides while.Wherein, concrete is the deciding factor of performance determining box culvert, but the cold-resistant concrete box culvert that formed after building under the condition of severe cold of existing concrete is second-rate, and it is up to standard that main manifestations is that the index of cracking load and failing load is difficult to.
Summary of the invention
The object of this invention is to provide a kind of cold-resistant concrete box culvert and preparation method thereof, the cold-resistant concrete box culvert obtained by the method has excellent cracking load and failing load index.
To achieve these goals, the invention provides a kind of preparation method of cold-resistant concrete box culvert, comprising:
1) be soaked in activation solution by mud, then filtration, dried and screened obtain activated sludge;
2) by obtained for the mixing of cement, activated sludge, stone, sand, flyash and water concrete;
3) by concrete placement in Framework Of Steel Reinforcement, the then obtained cold-resistant concrete box culvert of maintenance;
Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride.
Present invention also offers a kind of cold-resistant concrete box culvert, cold-resistant concrete box culvert is obtained by the preparation of above-mentioned method.
Pass through technique scheme, first the present invention carries out modification by hydrochloric acid, lauric acid and Sodium Silicofluoride to mud, and then activated sludge and stone, sand, flyash and water make concrete can coagulation forming and then have excellent cracking load and failing load index under the condition of severe cold under acting synergistically.In the prior art, mud is can not as concrete raw material, because common mud can destroy the bounding force between reinforcing bar and concrete, but in the present invention, contriver makes mud can not only use as concrete raw material by carrying out activation modification to mud, can also improve concrete winter resistance 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 preparation method of cold-resistant concrete box culvert, comprising:
1) be soaked in activation solution by mud, then filtration, dried and screened obtain activated sludge;
2) by obtained for the mixing of cement, activated sludge, stone, sand, flyash and water concrete;
3) by concrete placement in Framework Of Steel Reinforcement, the then obtained cold-resistant concrete box culvert of maintenance;
Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride.
In activation solution of the present invention, the consumption of each component can be selected in wide scope, but can activate further mud to make activation solution, preferably, in step 1) in, relative to the water of 100 weight parts, the consumption of hydrochloric acid is 15-20 weight part, lauric consumption is 12-15 weight part, and the consumption of Sodium Silicofluoride is 3-5 weight part.
In step 1 of the present invention) in, mud and activation solution consumption can be selected in wide scope, but in order to make activation solution can activate further mud, preferably, in step 1) in, relative to the mud of 100 weight parts, the consumption of activation solution is 300-500 weight part.
In step 1 of the present invention) in, soaking conditions can change in wide scope, but in order to make activation solution can activate further mud, preferably, in step 1) in, soak and at least meet the following conditions: soaking temperature is 70-90 DEG C, and soak time is 12-20h.
In step 1 of the present invention) in, drying conditions can be selected in wide scope, but in order to make the water content in activated sludge low as much as possible, preferably, in step 1) in, drying at least meets the following conditions: drying temperature is 120-150 DEG C and is dried in mixture water ratio lower than 1%.
In step 1 of the present invention) in, the particle diameter of activated sludge can be selected in wide scope, but in order to make the concrete obtained have more excellent cold performance, preferably, in step 1) in, in process of sieving, the order number of sieve is not less than 200 orders.
In step 2 of the present invention) in, the concrete consumption of each material can be selected in wide scope, but in order to make the concrete obtained have more excellent cold performance, preferably, in step 2) in, relative to the cement of 100 weight parts, the consumption of activated sludge is 20-35 weight part, and the consumption of stone is 150-200 weight part, and the consumption of sand is 180-220 weight part, the consumption of flyash is 50-70 weight part, and the consumption of water is 250-300 weight part.
In step 3 of the present invention) in, curing condition can be selected in wide scope, but in order to make the concrete obtained, there is more excellent cracking load and failing load index, preferably, maintenance at least meets the following conditions: curing temperature is-5 ~ 0 DEG C, relative humidity is 50-60%, and curing time is 3-5 days.
Present invention also offers a kind of cold-resistant concrete box culvert, cold-resistant concrete box culvert is obtained by the preparation of above-mentioned method.
Below will be described the present invention by embodiment.
Embodiment 1
1) mud is soaked at 80 DEG C in activation solution 16h (weight ratio of mud and activation solution is 100:400), then filters, in 135 DEG C of dryings until water ratio is lower than 1%, cross 200 object sieve series and obtain activated sludge; Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride (weight ratio is 100:17:14:4).
2) by obtained for the mixing of cement, activated sludge, stone, sand, flyash and water (weight ratio is 100:30:180:200:60:270) concrete.
3) by concrete placement in Framework Of Steel Reinforcement, then in-3 DEG C, relative humidity be the condition of 55% under the obtained cold-resistant concrete box culvert A1 of maintenance 4 days.
Embodiment 2
1) mud is soaked at 70 DEG C in activation solution 12h (weight ratio of mud and activation solution is 100:300), then filters, in 120 DEG C of dryings until water ratio is lower than 1%, cross 200 object sieve series and obtain activated sludge; Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride (weight ratio is 100:15:12:3).
2) by obtained for the mixing of cement, activated sludge, stone, sand, flyash and water (weight ratio is 100:20:150:180:50:250) concrete.
3) by concrete placement in Framework Of Steel Reinforcement, then in-5 DEG C, relative humidity be the condition of 50% under the obtained cold-resistant concrete box culvert A2 of maintenance 3 days.
Embodiment 3
1) mud is soaked at 90 DEG C in activation solution 20h (weight ratio of mud and activation solution is 100:500), then filters, in 150 DEG C of dryings until water ratio is lower than 1%, cross 200 object sieve series and obtain activated sludge; Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride (weight ratio is 100:20:15:5).
2) by obtained for the mixing of cement, activated sludge, stone, sand, flyash and water (weight ratio is 100:35:200:220:70:300) concrete.
3) by concrete placement in Framework Of Steel Reinforcement, then in 0 DEG C, relative humidity be the condition of 60% under the obtained cold-resistant concrete box culvert A3 of maintenance 5 days.
Comparative example 1
Obtained cold-resistant concrete box culvert B1 is carried out according to the method for embodiment 1, unlike, without hydrochloric acid in activation solution.
Comparative example 2
Obtained cold-resistant concrete box culvert B2 is carried out according to the method for embodiment 1, unlike, without lauric acid in activation solution.
Comparative example 3
Obtained cold-resistant concrete box culvert B3 is carried out according to the method for embodiment 1, unlike, without Sodium Silicofluoride in activation solution.
Comparative example 4
Obtained cold-resistant concrete box culvert B4 is carried out according to the method for embodiment 1, unlike, step 2) middle without activated sludge.
Test example 1
The method recorded according to GB/T11836-2009 detects the cracking load (F1/kNm of above-mentioned obtained cold-resistant concrete box culvert
-1) and failing load (F2/kNm
-1), concrete outcome is in table 1.
Table 1
| F1/kN·m -1 | F2/kN·m -1 | |
| A1 | 82 | 120 |
| A2 | 80 | 123 |
| A3 | 78 | 118 |
| B1 | 51 | 99 |
| B2 | 48 | 91 |
| B3 | 50 | 89 |
| B4 | 59 | 104 |
Known by above-described embodiment, comparative example and test example, cold-resistant concrete box culvert provided by the invention has excellent cracking load and failing load index, immediately under severe cold condition.
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 (9)
1. a preparation method for cold-resistant concrete box culvert, is characterized in that, comprising:
1) be soaked in activation solution by mud, then filtration, dried and screened obtain activated sludge;
2) by obtained for the mixing of cement, described activated sludge, stone, sand, flyash and water concrete;
3) by described concrete placement in Framework Of Steel Reinforcement, the then obtained cold-resistant concrete box culvert of maintenance;
Wherein, activation solution contains water, hydrochloric acid, lauric acid and Sodium Silicofluoride.
2. preparation method according to claim 1, wherein, in step 1) in, relative to the water of 100 weight parts, the consumption of described hydrochloric acid is 15-20 weight part, and described lauric consumption is 12-15 weight part, and the consumption of described Sodium Silicofluoride is 3-5 weight part.
3. preparation method according to claim 1, wherein, in step 1) in, relative to the described mud of 100 weight parts, the consumption of described activation solution is 300-500 weight part.
4. according to the preparation method in claim 1-3 described in any one, wherein, in step 1) in, described immersion at least meets the following conditions: soaking temperature is 70-90 DEG C, and soak time is 12-20h.
5. according to the preparation method in claim 1-3 described in any one, wherein, in step 1) in, described drying at least meets the following conditions: drying temperature is 120-150 DEG C and is dried in mixture water ratio lower than 1%.
6. according to the preparation method in claim 1-3 described in any one, wherein, in step 1) in, described in sieve process in sieve order number be not less than 200 orders.
7. according to the preparation method in claim 1-3 described in any one, wherein, in step 2) in, relative to the described cement of 100 weight parts, the consumption of described activated sludge is 20-35 weight part, and the consumption of described stone is 150-200 weight part, and the consumption of described sand is 180-220 weight part, the consumption of described flyash is 50-70 weight part, and the consumption of described water is 250-300 weight part.
8. according to the preparation method in claim 1-3 described in any one, wherein, described maintenance at least meets the following conditions: curing temperature is-5 ~ 0 DEG C, and relative humidity is 50-60%, and curing time is 3-5 days.
9. a cold-resistant concrete box culvert, is characterized in that, described cold-resistant concrete box culvert obtains according to method preparation described in any one in claim 1-8.
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| CN201510496994.5A CN105060789A (en) | 2015-08-12 | 2015-08-12 | Cold-resistant concrete box culvert and preparation method thereof |
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| CN201510496994.5A CN105060789A (en) | 2015-08-12 | 2015-08-12 | Cold-resistant concrete box culvert and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630758A (en) * | 2016-12-30 | 2017-05-10 | 戴琪 | Preparation method of quick-drying and size-stabilizing type marble similar material |
| CN107337386A (en) * | 2017-05-23 | 2017-11-10 | 安徽砼宇特构科技有限公司 | Strong concrete box culvert structure part and preparation method thereof |
| CN108558337A (en) * | 2018-01-24 | 2018-09-21 | 绥中大地丰源建材有限公司 | The modified method for preparing organic active concrete is improved using mud |
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| CN1320570A (en) * | 2001-04-19 | 2001-11-07 | 上海中圣实业发展有限公司 | Solidified slurry and its preparing process |
| CN102503264A (en) * | 2011-10-20 | 2012-06-20 | 上海交通大学 | Composition taking silt as raw material as well as construction material prepared by utilizing composition and method thereof |
| CN102850077A (en) * | 2012-08-21 | 2013-01-02 | 西南科技大学 | Method for producing sludge-based ecological concrete product |
| CN103755267A (en) * | 2014-02-17 | 2014-04-30 | 盐城市国泰混凝土有限公司 | Sludge concrete and preparation method thereof |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320570A (en) * | 2001-04-19 | 2001-11-07 | 上海中圣实业发展有限公司 | Solidified slurry and its preparing process |
| CN102503264A (en) * | 2011-10-20 | 2012-06-20 | 上海交通大学 | Composition taking silt as raw material as well as construction material prepared by utilizing composition and method thereof |
| CN102850077A (en) * | 2012-08-21 | 2013-01-02 | 西南科技大学 | Method for producing sludge-based ecological concrete product |
| CN103755267A (en) * | 2014-02-17 | 2014-04-30 | 盐城市国泰混凝土有限公司 | Sludge concrete and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630758A (en) * | 2016-12-30 | 2017-05-10 | 戴琪 | Preparation method of quick-drying and size-stabilizing type marble similar material |
| CN107337386A (en) * | 2017-05-23 | 2017-11-10 | 安徽砼宇特构科技有限公司 | Strong concrete box culvert structure part and preparation method thereof |
| CN108558337A (en) * | 2018-01-24 | 2018-09-21 | 绥中大地丰源建材有限公司 | The modified method for preparing organic active concrete is improved using mud |
| CN108558337B (en) * | 2018-01-24 | 2020-12-29 | 绥中大地丰源建材有限公司 | Method for preparing organic active concrete by improving and modifying sludge |
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Application publication date: 20151118 |