CN110206139A - A kind of mass concrete construction method - Google Patents
A kind of mass concrete construction method Download PDFInfo
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- CN110206139A CN110206139A CN201910485784.4A CN201910485784A CN110206139A CN 110206139 A CN110206139 A CN 110206139A CN 201910485784 A CN201910485784 A CN 201910485784A CN 110206139 A CN110206139 A CN 110206139A
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- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
-
- 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
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- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
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- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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Abstract
The invention discloses a kind of mass concrete construction methods, more particularly to building field, reinforced frame is set including cleaning construction site, bundle and installation template, concrete are prepared, poured, conserving and six, the surface step of smooth concrete builds large volume concrete structural.The present invention makes cement pour top surface in boss-shaped by tailored template, increase contact area, keep the connection of pouring structure layer closer, integrated degree is high, by way of conserving and pouring while carrying out, guarantees to improve construction efficiency while build guality, cost is advantageously reduced using building waste particle, make utilization of resources, flyash, charcoal clast and asbestos fibre can effectively make temperature uniform conductive as admixture, and cooperation reinforced frame increases the intensity of large volume casting concrete.
Description
Technical field
The present invention relates to building fields, it is more particularly related to a kind of mass concrete construction method.
Background technique
Concrete refers to by the general designation of the cementing integral engineered composite material of cementitious material and aggregate, general cement conduct
Cementitious material, sandstone is as aggregate.Mass concrete refers to concrete structure entity minimum geometries not less than 1m's
Big scale of construction concrete is expected to the temperature change caused by cementitious material aquation in concrete and leads to harmful cracks due to contraction
The concrete of generation.A large amount of water conservancy projects, road and bridge have been built in transformation with the mankind to natural resources, these bases
It is mass concrete engineering that Infrastructure is also mostly, and the quality of mass concrete has very important shadow for entire engineering
It rings, mass concrete surface coefficients comparison is small, and concentration is compared in hydration heat of cement release, and inside heating is than very fast.In concrete
When the outer temperature difference is larger, concrete can be made to generate thermal cracking, influence structure safety and normal use.So must fundamentally divide
It is analysed, to guarantee the quality of construction.
Mass concrete also has a fixed limit to planar dimension other than minimum cross section and internal and external temperature have certain regulation
System, because planar dimension is excessive, TEMPERATURE FORCE caused by effect of contraction is also bigger, such as takes control temperature steps improper, temperature
When stress is more than the pulling force limiting value that concrete can bear, then crack is also easy to produce.
The Chinese patent of 109356160 A of patent application publication CN discloses a kind of construction party of mass concrete
Method, including step A: mounting structure reinforcing bar simultaneously sets up template, and template surrounds muti-piece concreting area, has between every piece and separates
Seam, while pre-buried measurement pipe；Step B: according to the casting method being layered comprehensively, by concreting to concrete region to be poured
Domain；Step C: the cooling simultaneously covering insulation material of water flowing；Step D: at interval of concrete temperature of a period of time measurement, and according to
The concrete inside and outside temperature difference and inside concrete maximum temperature measured, regulates and controls the temperature of concrete；Step E:
Form removal, and partitioning slot is carried out to fill out embedding processing.Concrete muti-piece pours, and each piece of pouring area individually can be conserved and be adopted
Different maintenance means are taken, are carried out convenient for maintenance, guarantees temperature and humidity needed for cement hydration process, avoids the life in crack
At.
But a kind of construction method of the mass concrete provided in above-mentioned technical proposal pours effect in practice
Rate is slow, and it is low to pour integrated degree.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of mass concrete construction side
Method makes cement pour top surface in boss-shaped, increases contact area, keep the connection of pouring structure layer closer by tailored template, and one
Body degree is high, by way of conserving and pouring while carrying out, guarantees to improve construction efficiency while build guality, to solve
The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: a kind of mass concrete construction method, specific to grasp
Make step are as follows:
Step 1: cleaning construction site, ground grading simultaneously dig deep trouth processed, and ground pile is buried inside deep trouth and pours ground,
It is pricked inside ground and sets reinforced frame, stood after vibrating, bury Ping Peiji with soil after ground is firm and tamped；
Step 2: continuing bundle at the top of reinforced concrete beds and set reinforced frame, and set up template in ground pile two sides, if using
Dry template surrounds muti-piece concreting frame as cement pouring area；
Step 3: 440-480 parts of low-heat cement, 1000-1100 parts of coarse aggregate, 480-500 parts of fine aggregate, water are taken in proportion
180-200 parts, 100-200 parts of admixture and 10-20 parts of additive are added in blender and are mixed evenly, obtain pouring mixed
Material；
Step 4: will pour mixing and be uniformly cast in inside pouring frame, pour to 30-50mm at the top of distance template,
By the depth of vibrator insertion casting concrete 80-100mm, vibrates to concrete, keep concrete surface smooth and quality
After uniformly, extract vibrator and stand, stand when concrete strength reaches 80%, form removal, continue on wire-tie frame, move up
Installation template continues concreting, while conserving to the solidification concrete of bottom；
Step 5: conserving large volume casting concrete, is covered using reed mat to large volume casting concrete surface, and fixed
Phase sprays warm water, and the temperature setting of the warm water is 30-40 DEG C, and the sprinkling period is set as 10-15 days, is after spraying end cycle
Warm water is not sprayed to expired region；
Step 6: cleaning large volume casting concrete surface after to entire engineering, impurity is removed, with mortar or microlith
The surface of the smooth concrete of concrete.
Preferably, the die head is set as Z-shaped bending mouth, and two Z-shaped bending mouth matchings constitute recess, and concrete pours
Chamfering boss is formed when building in recess, the template is coated with release agent on the inside of it before setting up, the release agent is set as oil
Property release agent.
Preferably, the coarse aggregate is set as building waste particle, and the coarse aggregate, which passes through, crushes crusher machine building waste,
And sub-sieve takes graininess fines, the fine aggregate is set as river sand, and the partial size of the coarse aggregate is set as 10-30mm, described thin
The partial size of aggregate is set as 3-5mm.
Preferably, the admixture includes flyash, charcoal clast and asbestos fibre, the flyash, charcoal clast and
The adding proportion of asbestos fibre is set as 3-5:2-3:0.3-0.6.
Preferably, the additive includes defoaming agent, water-reducing agent, retarder and early strength agent, the defoaming agent, water-reducing agent,
The adding proportion of retarder and early strength agent is set as 1-2:1-3:2-4:2-4.
Preferably, vibrating time is set as 3-5min in the step 4, is separated by 2-4m and carries out primary concussion operation, single
It pours thickness and is set as 1-2m, temperature of concrete during construction is set as 20-25 DEG C.
Preferably, the low-heat cement is set as low-heat portland cement, the steel in the large volume concrete structural body
Ledges volume content is set as 1-3%.
Technical effect and advantage of the invention:
1, so that cement is poured top surface in boss-shaped by tailored template, increase contact area, make the connection of pouring structure layer more
Closely, integrated degree is high, by way of conserving and pouring while carrying out, guarantees to improve construction effect while build guality
Rate；
2, by advantageously reducing cost using building waste particle, make utilization of resources, flyash, charcoal clast and
Asbestos fibre can effectively make temperature uniform conductive as admixture, and cooperation reinforced frame increases the strong of large volume casting concrete
Degree.
Detailed description of the invention
Fig. 1 is formwork structure schematic diagram of the invention.
Fig. 2 is pouring layer structure sectional view of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
The present invention provides a kind of mass concrete construction method, concrete operation steps are as follows:
Step 1: cleaning construction site, ground grading simultaneously dig deep trouth processed, and ground pile is buried inside deep trouth and pours ground,
It is pricked inside ground and sets reinforced frame, stood after vibrating, bury Ping Peiji with soil after ground is firm and tamped；
Step 2: continue bundle at the top of reinforced concrete beds and set reinforced frame, and set up template, the mould in ground pile two sides
It is set as Z-shaped bending mouth at the top of plate, two Z-shaped bending mouths matching composition recesses, when concreting forms chamfering in recess
Boss, the template are coated with release agent before setting up on the inside of it, and the release agent is set as oil-based release agent, uses several templates
Muti-piece concreting frame is surrounded as cement pouring area；
Step 3: 440 parts of low-heat cement, 1000 parts of coarse aggregate, 480 parts of fine aggregate, 180 parts of water, admixture are taken in proportion
100 parts and 10 parts of additive, the coarse aggregate is set as building waste particle, and the coarse aggregate builds rubbish by crushing crusher machine
Rubbish, and sub-sieve takes graininess fines, the fine aggregate is set as river sand, and the partial size of the coarse aggregate is set as 10mm, described thin
The partial size of aggregate is set as 3mm, and the admixture includes flyash, charcoal clast and asbestos fibre, and the flyash, charcoal are broken
The adding proportion of bits and asbestos fibre is set as 3:2:0.3, and the additive includes defoaming agent, water-reducing agent, retarder and early strong
Agent, the defoaming agent, water-reducing agent, retarder and early strength agent adding proportion be set as 1:1:2:2, mixing in blender is added and stirs
It mixes uniformly, obtains pouring mixing, low-heat cement is set as low-heat portland cement, the steel in the large volume concrete structural body
Ledges volume content is set as 1%；
Step 4: will pour mixing and be uniformly cast in inside pouring frame, pours to 30mm at the top of distance template, will shake
The depth for smashing device insertion casting concrete 80mm, vibrates to concrete, after keeping concrete surface smooth and being homogeneous, pulls out
Vibrator is stood out, and vibrating time is set as 3min, is separated by 2m and is carried out primary concussion operation, standing reaches to concrete strength
When 80%, form removal, continue on wire-tie frame, move up installation template, continue concreting, while coagulating to bottom
Gu concrete is conserved, single pours thickness and is set as 1m, and temperature of concrete during construction is set as 20 DEG C；
Step 5: conserving large volume casting concrete, is covered using reed mat to large volume casting concrete surface, and fixed
Phase sprays warm water, and the temperature setting of the warm water is 30 DEG C, and the sprinkling period is set as 10 days, i.e. not to the phase after sprinkling end cycle
Spray warm water in full region；
Step 6: cleaning large volume casting concrete surface after to entire engineering, impurity is removed, with mortar or microlith
The surface of the smooth concrete of concrete.
The large volume casting concrete presentation quality prepared in the present embodiment is excellent, and the smooth flawless of appearance is homogeneous, interior
Portion's porosity is low, in addition tests in the present embodiment large volume casting concrete performance, the results showed that its water-reducing rate is
45.7%, the compression strength of concrete is set as 28.6MPa after pouring seven days, and the compression strength for pouring concrete after fortnight is set
It is set to 36.4MPa, the type that is completely embedded is 98.3%, is completely embedded, stable structure, and integrated degree is high, it is high-quality, it can satisfy
The requirement of high-strength building.
Embodiment 2:
The present invention provides a kind of mass concrete construction method, concrete operation steps are as follows:
Step 1: cleaning construction site, ground grading simultaneously dig deep trouth processed, and ground pile is buried inside deep trouth and pours ground,
It is pricked inside ground and sets reinforced frame, stood after vibrating, bury Ping Peiji with soil after ground is firm and tamped；
Step 2: continue bundle at the top of reinforced concrete beds and set reinforced frame, and set up template, the mould in ground pile two sides
It is set as Z-shaped bending mouth at the top of plate, two Z-shaped bending mouths matching composition recesses, when concreting forms chamfering in recess
Boss, the template are coated with release agent before setting up on the inside of it, and the release agent is set as oil-based release agent, uses several templates
Muti-piece concreting frame is surrounded as cement pouring area；
Step 3: 460 parts of low-heat cement, 1050 parts of coarse aggregate, 490 parts of fine aggregate, 190 parts of water, admixture are taken in proportion
150 parts and 15 parts of additive, the coarse aggregate is set as building waste particle, and the coarse aggregate builds rubbish by crushing crusher machine
Rubbish, and sub-sieve takes graininess fines, the fine aggregate is set as river sand, and the partial size of the coarse aggregate is set as 20mm, described thin
The partial size of aggregate is set as 4mm, and the admixture includes flyash, charcoal clast and asbestos fibre, and the flyash, charcoal are broken
The adding proportion of bits and asbestos fibre is set as 4:2.5:0.5, and the additive includes defoaming agent, water-reducing agent, retarder and morning
Strong agent, the defoaming agent, water-reducing agent, retarder and early strength agent adding proportion be set as 1:1:2:2, mixing in blender is added
It stirs evenly, obtains pouring mixing, low-heat cement is set as low-heat portland cement, in the large volume concrete structural body
Reinforced frame volume content is set as 2%；
Step 4: will pour mixing and be uniformly cast in inside pouring frame, pours to 40mm at the top of distance template, will shake
The depth for smashing device insertion casting concrete 90mm, vibrates to concrete, after keeping concrete surface smooth and being homogeneous, pulls out
Vibrator is stood out, and vibrating time is set as 4min, is separated by 3m and is carried out primary concussion operation, standing reaches to concrete strength
When 80%, form removal, continue on wire-tie frame, move up installation template, continue concreting, while coagulating to bottom
Gu concrete is conserved, single pours thickness and is set as 1.5m, and temperature of concrete during construction is set as 23 DEG C；
Step 5: conserving large volume casting concrete, is covered using reed mat to large volume casting concrete surface, and fixed
Phase sprays warm water, and the temperature setting of the warm water is 35 DEG C, and the sprinkling period is set as 13 days, i.e. not to the phase after sprinkling end cycle
Spray warm water in full region；
Step 6: cleaning large volume casting concrete surface after to entire engineering, impurity is removed, with mortar or microlith
The surface of the smooth concrete of concrete.
Comparative example 1, the large volume casting concrete presentation quality prepared in the present embodiment is excellent, and the smooth nothing of appearance is split
Line, homogeneous, interior porosity is low, in addition tests in the present embodiment large volume casting concrete performance, as a result table
Bright: its water-reducing rate is 47.3%, and the compression strength of concrete is set as 28.6MPa after pouring seven days, pours coagulation after fortnight
The compression strength of soil is set as 30.1MPa, and the type that is completely embedded is 99.2%, is completely embedded, stable structure, and integrated degree is high,
It is high-quality, it can satisfy the requirement of high-strength building.
Embodiment 3:
The present invention provides a kind of mass concrete construction method, concrete operation steps are as follows:
Step 1: cleaning construction site, ground grading simultaneously dig deep trouth processed, and ground pile is buried inside deep trouth and pours ground,
It is pricked inside ground and sets reinforced frame, stood after vibrating, bury Ping Peiji with soil after ground is firm and tamped；
Step 2: continue bundle at the top of reinforced concrete beds and set reinforced frame, and set up template, the mould in ground pile two sides
It is set as Z-shaped bending mouth at the top of plate, two Z-shaped bending mouths matching composition recesses, when concreting forms chamfering in recess
Boss, the template are coated with release agent before setting up on the inside of it, and the release agent is set as oil-based release agent, uses several templates
Muti-piece concreting frame is surrounded as cement pouring area；
Step 3: 480 parts of low-heat cement, 1100 parts of coarse aggregate, 500 parts of fine aggregate, 200 parts of water, admixture are taken in proportion
200 parts and 20 parts of additive, the coarse aggregate is set as building waste particle, and the coarse aggregate builds rubbish by crushing crusher machine
Rubbish, and sub-sieve takes graininess fines, the fine aggregate is set as river sand, and the partial size of the coarse aggregate is set as 30mm, described thin
The partial size of aggregate is set as 5mm, and the admixture includes flyash, charcoal clast and asbestos fibre, and the flyash, charcoal are broken
The adding proportion of bits and asbestos fibre is set as 5:3:0.6, and the additive includes defoaming agent, water-reducing agent, retarder and early strong
Agent, the defoaming agent, water-reducing agent, retarder and early strength agent adding proportion be set as 2:3:4:4, mixing in blender is added and stirs
It mixes uniformly, obtains pouring mixing, low-heat cement is set as low-heat portland cement, the steel in the large volume concrete structural body
Ledges volume content is set as 3%；
Step 4: will pour mixing and be uniformly cast in inside pouring frame, pours to 50mm at the top of distance template, will shake
The depth for smashing device insertion casting concrete 100mm, vibrates to concrete, after keeping concrete surface smooth and being homogeneous,
It extracts vibrator to stand, vibrating time is set as 5min, is separated by 4m and carries out primary concussion operation, standing reaches to concrete strength
When 80%, form removal, continue on wire-tie frame, move up installation template, continue concreting, while coagulating to bottom
Gu concrete is conserved, single pours thickness and is set as 2m, and temperature of concrete during construction is set as 25 DEG C；
Step 5: conserving large volume casting concrete, is covered using reed mat to large volume casting concrete surface, and fixed
Phase sprays warm water, and the temperature setting of the warm water is 40 DEG C, and the sprinkling period is set as 15 days, i.e. not to the phase after sprinkling end cycle
Spray warm water in full region；
Step 6: cleaning large volume casting concrete surface after to entire engineering, impurity is removed, with mortar or microlith
The surface of the smooth concrete of concrete.
Comparative example 1 and 2, the large volume casting concrete presentation quality prepared in the present embodiment is excellent, the smooth nothing of appearance
Crackle, homogeneous, interior porosity is low, in addition tests in the present embodiment large volume casting concrete performance, as a result
Show: its water-reducing rate is 47.3%, and the compression strength of concrete is set as 28.6MPa after pouring seven days, is mixed after pouring fortnight
The compression strength for coagulating soil is set as 30.1MPa, and the type that is completely embedded is 99.2%, is completely embedded, stable structure, integrated degree
Height, it is high-quality, it can satisfy the requirement of high-strength building.
Following table is obtained according to embodiment 1-3:
As seen from the above table, 2 chinese raw materials ratio of embodiment is moderate, and processing temperature is moderate, and process time is suitble to, embodiment 2
Processing technology be more suitable for the construction of large volume casting concrete, and building waste particle advantageously reduces cost, makes resource
Effective use, flyash, charcoal clast and asbestos fibre can effectively make temperature uniform conductive as admixture, cooperate reinforced frame
The intensity for increasing large volume casting concrete makes cement pour top surface in boss-shaped, increases contact area, make by tailored template
The connection of pouring structure layer is closer, and integrated degree is high, by way of conserving and pouring while carrying out, guarantees build guality
Construction efficiency is improved simultaneously.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of mass concrete construction method, it is characterised in that: concrete operation step are as follows:
Step 1: cleaning construction site, ground grading simultaneously dig deep trouth processed, ground pile are buried inside deep trouth and pours ground, ground
Inside is pricked and sets reinforced frame, stands after vibrating, and buries Ping Peiji with soil after ground is firm and tamps；
Step 2: continue bundle at the top of reinforced concrete beds and set reinforced frame, and set up template in ground pile two sides, use several moulds
Plate surrounds muti-piece concreting frame as cement pouring area；
Step 3: 440-480 parts of low-heat cement, 1000-1100 parts of coarse aggregate, 480-500 parts of fine aggregate, water 180- are taken in proportion
200 parts, 100-200 parts of admixture and 10-20 parts of additive are added in blender and are mixed evenly, obtain pouring mixing；
Step 4: will pour mixing and be uniformly cast in inside pouring frame, pours to 30-50mm at the top of distance template, will shake
The depth for smashing device insertion casting concrete 80-100mm, vibrates to concrete, keeps concrete surface smooth and homogeneous
Afterwards, extract vibrator to stand, stand when concrete strength reaches 80%, form removal, continue on wire-tie frame, move up installation
Template continues concreting, while conserving to the solidification concrete of bottom；
Step 5: conserving large volume casting concrete, is covered using reed mat to large volume casting concrete surface, and periodically spray
Warm water is spilt, the temperature setting of the warm water is 30-40 DEG C, and the sprinkling period is set as 10-15 days, i.e. not right after sprinkling end cycle
Spray warm water in expired region；
Step 6: cleaning large volume casting concrete surface after to entire engineering, impurity is removed, with mortar or microlith coagulation
The surface of the smooth concrete of soil.
2. a kind of mass concrete construction method according to claim 1, it is characterised in that: the die head setting
For Z-shaped bending mouth, two Z-shaped bending mouths matchings constitute recesses, and when concreting forms chamfering boss, the mould in recess
Plate is coated with release agent before setting up on the inside of it, and the release agent is set as oil-based release agent.
3. a kind of mass concrete construction method according to claim 1, it is characterised in that: the coarse aggregate is set as
Building waste particle, the coarse aggregate is by crushing crusher machine building waste, and sub-sieve takes graininess fines, and the fine aggregate is set
It is set to river sand, the partial size of the coarse aggregate is set as 10-30mm, and the partial size of the fine aggregate is set as 3-5mm.
4. a kind of mass concrete construction method according to claim 1, it is characterised in that: the admixture includes powder
Coal ash, charcoal clast and asbestos fibre, the adding proportion of the flyash, charcoal clast and asbestos fibre are set as 3-5:2-3:
0.3-0.6。
5. a kind of mass concrete construction method described in any one of according to claim 1, it is characterised in that: described outer
Add agent to include defoaming agent, water-reducing agent, retarder and early strength agent, the defoaming agent, water-reducing agent, retarder and early strength agent addition ratio
Example is set as 1-2:1-3:2-4:2-4.
6. a kind of mass concrete construction method according to claim 1, it is characterised in that: vibrate in the step 4
Time is set as 3-5min, is separated by 2-4m and carries out primary concussion operation, single pours thickness and is set as 1-2m, concreting temperature
Degree is set as 20-25 DEG C.
7. a kind of mass concrete construction method according to claim 1, it is characterised in that: the low-heat cement setting
For low-heat portland cement, the reinforced frame volume content in the large volume concrete structural body is set as 1-3%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955988A (en) * | 2021-10-18 | 2022-01-21 | 浙江艮威水利建设有限公司 | Large-volume concrete block, pouring construction method and poured dam |
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| CN113955988B (en) * | 2021-10-18 | 2022-09-23 | 浙江艮威水利建设有限公司 | Large-volume concrete block, pouring construction method and poured dam |
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