CN104847114A - Construction method for preventing concrete cracks - Google Patents
Construction method for preventing concrete cracks Download PDFInfo
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- CN104847114A CN104847114A CN201510245021.4A CN201510245021A CN104847114A CN 104847114 A CN104847114 A CN 104847114A CN 201510245021 A CN201510245021 A CN 201510245021A CN 104847114 A CN104847114 A CN 104847114A
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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 construction method for preventing concrete cracks and relates to the technical field of building construction. The construction method comprises the steps of 1, concrete mixing, 2, concrete pouring, and 3, concrete surface heat insulating. Compared with the prior art, the construction method is capable of preventing the concrete cracks and simple in construction.
Description
Technical field
The present invention relates to technical field of building construction, especially a kind of construction method of preventing distress in concrete.
Background technology
The problem of distress in concrete is the technical problem of a generality in building operations.Crack is once be formed, and particularly basic through crack appears at important structure position, very harmful, and it can reduce the durability of structure, weakens the bearing capacity of component, may jeopardize the safe handling of building simultaneously.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of construction method of preventing distress in concrete, and it can solve the problem that concrete produces crack.
In order to solve the problem, the technical solution adopted in the present invention is: the method for this prevention distress in concrete, comprises the following steps:
A. concrete mixing: adopt the raw material of following weight portion as concrete mixing raw material: the cement 30 ~ 40 parts of low hydration heat, 15 ~ 30 parts, flyash, water reducing agent 4 ~ 6 parts, retarding agent 4 ~ 6 parts, air entraining agent 4 ~ 6 parts, expansion agent 5 ~ 8 parts, fluidizer 8 ~ 10 parts, rubble 70 ~ 90 parts, 80 ~ 90 parts, sand, after mixing, mix on the rocks, mix temperature is 5 ~ 8 DEG C;
B. concreting: casting process carries out concrete vibrating, build layered and build, layering is vibrated, and has built one deck, and vibrate one deck;
C. concrete surface is heat insulation: plastic covering film on the concrete after building, and adopt the plastic foil cooling on cold water spray concrete, cold water temperature is 10 ~ 15 DEG C, each spray time 1 ~ 2 hour.
In technique scheme, technical scheme can also be more specifically: the cement of low hydration heat described in steps A is portland cement.
Further: the water/binder ratio described in steps A during concrete mixing is 0.4 ~ 0.6.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1. the internal-external temperature difference after adopting the lower cement of the heat of hydration can reduce concreting, reduces the heat of hydration, and the flyash added in concrete mixing process and water reducing agent can reduce cement consumption, reduce concrete heat expansion.
2. control concrete mixing temperature and build the temperature and time of rear spray cold water, concrete can well be prevented to produce crack.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
The method of this prevention distress in concrete, comprises the following steps:
A. concrete mixing: adopt the raw material of following weight portion as concrete mixing raw material: the cement 30 parts of low hydration heat, 15 parts, flyash, water reducing agent 4 parts, retarding agent 4 parts, air entraining agent 4 parts, expansion agent 5 parts, fluidizer 8 parts, rubble 70 parts, 80 parts, sand, after mixing, mix on the rocks, mix temperature is 5 DEG C; The cement of low hydration heat is portland cement, and water/binder ratio during concrete mixing is 0.4.
B. concreting: casting process carries out concrete vibrating, build layered and build, layering is vibrated, and has built one deck, and vibrate one deck;
C. concrete surface is heat insulation: plastic covering film on the concrete after building, and adopt the plastic foil cooling on cold water spray concrete, cold water temperature is 10 DEG C, each spray time 1 hour.
Embodiment 2:
A. concrete mixing: adopt the raw material of following weight portion as concrete mixing raw material: the cement 40 parts of low hydration heat, 30 parts, flyash, water reducing agent 6 parts, retarding agent 6 parts, air entraining agent 6 parts, expansion agent 8 parts, fluidizer 10 parts, rubble 90 parts, 90 parts, sand, after mixing, mix on the rocks, mix temperature is 8 DEG C; The cement of low hydration heat is portland cement, and water/binder ratio during concrete mixing is 0.6.
B. concreting: casting process carries out concrete vibrating, build layered and build, layering is vibrated, and has built one deck, and vibrate one deck;
C. concrete surface is heat insulation: plastic covering film on the concrete after building, and adopt the plastic foil cooling on cold water spray concrete, cold water temperature is 15 DEG C, each spray time 2 hours.
Embodiment 3:
A. concrete mixing: adopt the raw material of following weight portion as concrete mixing raw material: the cement 35 parts of low hydration heat, 20 parts, flyash, water reducing agent 5 parts, retarding agent 5 parts, air entraining agent 5 parts, expansion agent 7 parts, fluidizer 9 parts, rubble 80 parts, 85 parts, sand, after mixing, mix on the rocks, mix temperature is 7 DEG C; The cement of low hydration heat is portland cement, and water/binder ratio during concrete mixing is 0.55.
B. concreting: casting process carries out concrete vibrating, build layered and build, layering is vibrated, and has built one deck, and vibrate one deck;
C. concrete surface is heat insulation: plastic covering film on the concrete after building, and adopt the plastic foil cooling on cold water spray concrete, cold water temperature is 13 DEG C, each spray time 1.5 hours.
Claims (3)
1. prevent a construction method for distress in concrete, it is characterized in that comprising the following steps:
A. concrete mixing: adopt the raw material of following weight portion as concrete mixing raw material: the cement 30 ~ 40 parts of low hydration heat, 15 ~ 30 parts, flyash, water reducing agent 4 ~ 6 parts, retarding agent 4 ~ 6 parts, air entraining agent 4 ~ 6 parts, expansion agent 5 ~ 8 parts, fluidizer 8 ~ 10 parts, rubble 70 ~ 90 parts, 80 ~ 90 parts, sand, after mixing, mix on the rocks, mix temperature is 5 ~ 8 DEG C;
B. concreting: casting process carries out concrete vibrating, build layered and build, layering is vibrated, and has built one deck, and vibrate one deck;
C. concrete surface is heat insulation: plastic covering film on the concrete after building, and adopt the plastic foil cooling on cold water spray concrete, cold water temperature is 10 ~ 15 DEG C, each spray time 1 ~ 2 hour.
2. the construction method of prevention distress in concrete according to claim 1, is characterized in that: the cement of low hydration heat described in steps A is portland cement.
3. the construction method of prevention distress in concrete according to claim 1, is characterized in that: the water/binder ratio described in steps A during concrete mixing is 0.4 ~ 0.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245021.4A CN104847114A (en) | 2015-05-14 | 2015-05-14 | Construction method for preventing concrete cracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245021.4A CN104847114A (en) | 2015-05-14 | 2015-05-14 | Construction method for preventing concrete cracks |
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| Publication Number | Publication Date |
|---|---|
| CN104847114A true CN104847114A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510245021.4A Pending CN104847114A (en) | 2015-05-14 | 2015-05-14 | Construction method for preventing concrete cracks |
Country Status (1)
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| CN (1) | CN104847114A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569044A (en) * | 2015-12-17 | 2016-05-11 | 江苏建筑职业技术学院 | Post-pouring mass concrete construction method |
| CN107558504A (en) * | 2017-08-16 | 2018-01-09 | 中交四航工程研究院有限公司 | A kind of construction method for controlling concrete component cracking |
| CN108297246A (en) * | 2017-12-08 | 2018-07-20 | 中交烟台环保疏浚有限公司 | Prevent concrete block from generating fracture unit technique |
| CN109440771A (en) * | 2018-12-26 | 2019-03-08 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of solution large volume mixed mud temperature difference leads to the construction technology in crack |
| CN110685424A (en) * | 2019-09-05 | 2020-01-14 | 东莞市鲁班装饰工程有限公司 | Building floor leveling anti-cracking construction method and building floor leveling anti-cracking structure |
-
2015
- 2015-05-14 CN CN201510245021.4A patent/CN104847114A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569044A (en) * | 2015-12-17 | 2016-05-11 | 江苏建筑职业技术学院 | Post-pouring mass concrete construction method |
| CN107558504A (en) * | 2017-08-16 | 2018-01-09 | 中交四航工程研究院有限公司 | A kind of construction method for controlling concrete component cracking |
| CN108297246A (en) * | 2017-12-08 | 2018-07-20 | 中交烟台环保疏浚有限公司 | Prevent concrete block from generating fracture unit technique |
| CN109440771A (en) * | 2018-12-26 | 2019-03-08 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of solution large volume mixed mud temperature difference leads to the construction technology in crack |
| CN110685424A (en) * | 2019-09-05 | 2020-01-14 | 东莞市鲁班装饰工程有限公司 | Building floor leveling anti-cracking construction method and building floor leveling anti-cracking structure |
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Application publication date: 20150819 |
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| WD01 | Invention patent application deemed withdrawn after publication |