CN108129092A - Mass concrete and its preparation process - Google Patents

Mass concrete and its preparation process Download PDF

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Publication number
CN108129092A
CN108129092A CN201711498504.0A CN201711498504A CN108129092A CN 108129092 A CN108129092 A CN 108129092A CN 201711498504 A CN201711498504 A CN 201711498504A CN 108129092 A CN108129092 A CN 108129092A
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CN
China
Prior art keywords
parts
water
cement
mass concrete
concrete
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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
Application number
CN201711498504.0A
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Chinese (zh)
Inventor
马占民
张�林
吕林
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Chengdu Precision Concrete Co Ltd
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Chengdu Precision Concrete Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Precision Concrete Co Ltd filed Critical Chengdu Precision Concrete Co Ltd
Priority to CN201711498504.0A priority Critical patent/CN108129092A/en
Publication of CN108129092A publication Critical patent/CN108129092A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a kind of mass concrete and its preparation process, including 230 ~ 235 parts of cement, 110 ~ 120 parts of flyash, 160 ~ 165 parts of water, 75 ~ 80 parts of miberal powder, 850 ~ 860 parts of middle sand, 735 ~ 740 parts of the rubble that grain size is 5 ~ 25mm, 220 ~ 225 parts of the rubble that grain size is 5 ~ 10mm, 1 ~ 1.5 part of modifying agent, 0.001 ~ 0.005 part of retarder, 7 ~ 7.8 parts of water-reducing agent.The addition of flyash, miberal powder reduces the incorporation of cement, reduce heat release of the cement in hydration process, modifying agent selection copolymerization methacrylic acid is added simultaneously, copolymerization iso-amylene polyoxyethylene ether can be complexed with cement complexing or water-reducing agent, the degree of hydration of cement can be changed, hydrated cementitious peak period is postponed, uses the aquation that can avoid the peak hour in mass concrete.Whole selection said components not only reduce hydrated cementitious heat release, while delay hydrated cementitious peak period, avoid the temperature shrinkage that temperature change dramatically is influenced, and then avoid the cracking phenomena of mass concrete.

Description

Mass concrete and its preparation process
Technical field
The present invention relates to concrete field, more particularly to a kind of mass concrete and its preparation process.
Background technology
With the development of high-speed railway, design and construction to bridge structure are proposed important requirement.Bridge is set Development and society of the meter with our science and technology have close relationship for the attention of industrial technology, for the big face of modern society The further reinforcement of long-pending building concrete construction, we are for the aquation in the material composition and work progress of concrete Thermal phenomenon has all done certain analysis and application, and the distinguishing feature of the suspended deck structure of span bridge is that structure size is big, concrete Side's amount increases.
But the heat of hydration stage that the concrete of large volume rises in intensity in practical applications can generate a large amount of heat, Since the heat transfer property of concrete is poor, internal aquation heat is not easy to distribute, and can be formed on cross section outside temperature gradient and concrete The temperature difference of layer and ambient enviroment, and then make the generation that concrete generates larger temperature deformation and temperature stress leads to crack.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of mass concrete, have and reduce The advantages of being cracked because of the variation of temperature.
The present invention above-mentioned technical purpose technical scheme is that:
A kind of mass concrete includes the component of following parts by weight:230~235 parts of cement, 110~120 parts of flyash, 735~740 parts of rubble that 160~165 parts of water, 75~80 parts of miberal powder, 850~860 parts of middle sand, grain size are 5~25mm, grain size are 7~7.8 parts of 0.001~0.005 part of 1~1.5 part of 220~225 parts of rubble, modifying agent, retarder, the water-reducing agent of 5~10mm.
Through the above technical solutions, flyash is the fine ash that catching is got off from the flue gas after coal combustion, for concrete In can improve the utilization rate of flyash, reduce the waste of flyash;And the flyash added in concrete has been saved largely Cement and fine aggregate;Reduce and use cement consumption;Improve coagulation mix workability;Enhance the pumpability of concrete;It reduces The creeping of concrete;Reduce the heat of hydration, thermal energy dilatancy;Improve the anti-permeability performance of concrete.Miberal powder is to meet engine request Mountain flour and its substitute general designation, be by the product after ore crushing and processing;Miberal powder is added in into concrete can reduce water The dosage of mud, the internal structure reduce the heat of hydration, promote later strength, improving concrete, improves the workability for improving concrete Impervious and resistance to corrosion.It is capable of the hydration rate of delay gelatinizing material after the mineral powder that concrete incorporation is levigate, makes concrete Setting time extend, have the construction and conveying using high temperature season concrete.The addition of middle sand, rubble can ensure concrete Structural strength.The addition of retarder can increase the setting time of cement, hydrated cementitious peak period be postponed, using in large volume Aquation of avoiding the peak hour is carried out in concrete, then it is next that the heat that cement releases in condensation there can be time enough to exhale, drop The influence of crackle caused by low hydration heat;The use of water-reducing agent can reduce the dosage of cement, then can just reduce concrete and coagulate The heat of hydration during Gu.
The present invention is further arranged to:The modifying agent selection copolymerization methacrylic acid, copolymerization iso-amylene polyoxyethylene ether In one kind.
Through the above technical solutions, copolymerization methacrylic acid addition can with concrete match ratio, during processing Surface is negatively charged, can be complexed with the constituent part in concrete, slow down the time to the cement solidifies;It is copolymerized iso-amylene polyoxy second The addition of alkene ether can coordinate with concrete component, adsorb the surface of the cement granules in concrete, slow down the solidification of cement, The heat distributed in the process that thes cement solidifies can just have longer time to exhale, and reduce the heat for being gathered in inside concrete Amount, also just reduces crackle.
The present invention is further arranged to:The mixing of the retarder selection carbohydrate retarder and lemon acids retarder.
Through the above technical solutions, the addition of carbohydrate retarder and lemon acids retarder can slow down the solidification of concrete Time, the crackle that concrete caused by shedding while reducing a large amount of heat that the time that thes cement solidifies comparatively fast occurs occurs show As.
The present invention is further arranged to:The carbohydrate retarder selection sugar calcium or calcium gluconate.
Through the above technical solutions, sugar calcium has decomposability, adhesion, the chelant of strength very soluble in water.And Sugar calcium has water-soluble lyophilic colloid property, carries charge on particle, is a kind of surface reactive material, can adsorb in various solid matter On the surface of point, and it is salt formed by acidity, can carry out ion exchange, furthermore because there are this in institutional framework Various active groups, can more generate inherent polymerization or condensation occurs for other compounds.Calcium gluconate is used as water quality Stabilizer and cement adjuvant can cause the setting rate of cement to slow down.
The present invention is further arranged to:Penta 3 acid of lemon acids retarder selection 3- hydroxyls -1,3,5- or tartaric acid.
Through the above technical solutions, 3- hydroxyls -1,3, penta 3 acid of 5- or tartaric acid can be complexed with calcium ion, form a kind of difficulty In the soluble complexes of dissociation, the concentration of calcium ion is reduced, slows down the setting rate of concrete.
The present invention is further arranged to:The water-reducing agent selection poly carboxylic acid series water reducer or lignosulfonates system diminishing Agent.
Through the above technical solutions, polycarboxylate water-reducer or lignosulfonates based water reducer can reduce the use of cement Amount, also just reduces the heat for theing cement solidifies and coming out in the process, reduces the generation of crackle.
The present invention is further arranged to:The polycarboxylate water-reducer selection methacrylic acid or maleic anhydride.
Through the above technical solutions, methacrylic acid or maleic anhydride are reacted with cement, it is complexed with calcium ion, then component In calcium ion content it is few, slow down the setting rate of cement.
The present invention is further arranged to:The lignosulfonates based water reducer selection lignin sulfonic acid sodium salt or lignin Sulfonic acid potassium salt.
Through the above technical solutions, the presence of lignin sulfonic acid sodium salt or lignin sulfonic acid sylvite can be with Alternating solutions network It closes, slows down the setting rate of concrete.
The another goal of the invention of the present invention is to provide a kind of preparation process of mass concrete, including following preparation Process:
Step 1:By rubble that rubble that cement, middle sand, grain size are 5~25mm, grain size are 5~10mm, flyash, miberal powder, change Property agent and water sequentially add in blender 1~3min of stirring, be uniformly mixed;
Step 2:Continue to add in retarder into blender and water-reducing agent is stirred 2~4min, discharge.
Through the above technical solutions, the easy to process of concrete can be realized by the procedure of processing of step 1 and step 2, And dispersibility is higher.
In conclusion having the beneficial effect that in contrast to the prior art of the invention:
1st, the addition of flyash, miberal powder reduces the incorporation of cement, also just reduces a large amount of heat that cement distributes and causes Crack phenomenon;And the rubble addition that grain size is 5~25mm in component can enhance the structural strength of concrete, and grain size is thinner The intensity of the concrete of formation is big;
2nd, modifying agent selection copolymerization methacrylic acid, copolymerization iso-amylene polyoxyethylene ether can be complexed with cement or water-reducing agent is complexed, The characteristic of cement can be modified, and modifying agent is coated on the surface of cement, the setting rate of cement can be reduced;
3rd, carbohydrate retarder can be dissolved in the water, and with lyophilic colloid property, influence the property of modifying agent and cement, slow down The setting rate of cement.
Specific embodiment
The present invention is described in further detail with reference to embodiments.
Embodiment 1
A kind of mass concrete includes the component of following parts by weight:230 parts of cement, 110 parts of flyash, 160 parts of water, ore deposit 220 parts of rubble that 735 parts of rubble that 75 parts of powder, 850 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization methyl-prop 1 part of olefin(e) acid, 0.001 part of sugar calcium, 7 parts of methacrylic acid.
Embodiment 2
A kind of mass concrete includes the component of following parts by weight:231 parts of cement, 112 parts of flyash, 161 parts of water, ore deposit 221 parts of rubble that 736 parts of rubble that 76 parts of powder, 852 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization iso-amylene 1.1 parts of polyoxyethylene ether, 0.002 part of calcium gluconate, 7.1 parts of maleic anhydride.
Embodiment 3
A kind of mass concrete includes the component of following parts by weight:232 parts of cement, 114 parts of flyash, 162 parts of water, ore deposit 222 parts of rubble that 737 parts of rubble that 77 parts of powder, 854 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization methyl-prop 1.2 parts of olefin(e) acid, 3- hydroxyls -1,3,5- penta 3 sour 0.003 part, 7.2 parts of lignin sulfonic acid sodium salt.
Embodiment 4
A kind of mass concrete includes the component of following parts by weight:233 parts of cement, 116 parts of flyash, 163 parts of water, ore deposit 223 parts of rubble that 738 parts of rubble that 78 parts of powder, 856 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization iso-amylene 1.3 parts of polyoxyethylene ether, 0.004 part of sugar calcium, 7.5 parts of methacrylic acid.
Embodiment 5
A kind of mass concrete includes the component of following parts by weight:234 parts of cement, 118 parts of flyash, 164 parts of water, ore deposit 224 parts of rubble that 739 parts of rubble that 79 parts of powder, 858 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization iso-amylene 1.4 parts of polyoxyethylene ether, 0.005 part of calcium gluconate, 7.6 parts of lignin sulfonic acid sylvite.
Embodiment 6
A kind of mass concrete includes the component of following parts by weight:235 parts of cement, 120 parts of flyash, 165 parts of water, ore deposit 224 parts of rubble that 739 parts of rubble that 80 parts of powder, 860 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization methyl-prop 1.4 parts of olefin(e) acid, 0.005 part of calcium gluconate, 7.6 parts of methacrylic acid.
Embodiment 7
A kind of mass concrete includes the component of following parts by weight:235 parts of cement, 120 parts of flyash, 165 parts of water, ore deposit 224 parts of rubble that 739 parts of rubble that 80 parts of powder, 860 parts of middle sand, grain size are 5~25mm, grain size are 5~10mm, copolymerization iso-amylene 1.4 parts of polyoxyethylene ether, 0.005 part of calcium gluconate, 7.6 parts of lignin sulfonic acid sylvite.
Embodiment 8
A kind of preparation process of mass concrete, including following preparation process:
Step 1:By rubble that rubble that cement, middle sand, grain size are 5~25mm, grain size are 5~10mm, flyash, miberal powder, change Property agent and water sequentially add in blender 1~3min of stirring, be uniformly mixed;
Step 2:Continue to add in retarder into blender and water-reducing agent is stirred 2~4min, discharge.
Experiment detection
Experiment detection
1st, according to GB/T 50081-2002《Normal concrete mechanical property tests method standard》Test the mechanical property of concrete Energy;
2nd, wear-resisting property:Concrete in the way of embodiment 8 is made in the concrete of Examples 1 to 7, wearability is examined after solidification Energy;
3rd, cracking of reinforced concrete is detected with Ring test:Cracking time<1h's is very poor cement, cracking time>15h's It is excellent.
The compression strength of concrete made of above table can obtain the component of Examples 1 to 7, wear-resisting property and anti- Resistance to spalling meets the requirements, then when the concrete when in use, using effect is good.
Wherein, preferred embodiment 4 is as with reference to embodiment.
Comparative example 1
Comparative example 1 and embodiment 4 difference lies in not containing copolymerization iso-amylene polyoxyethylene ether in comparative example 1, other with reality Example 4 is applied to be consistent.
Comparative example 2
With embodiment 4 difference lies in sugar calcium is not contained in comparative example 2, other are consistent comparative example 2 with embodiment 4.
Comparative example 3
For comparative example 3 with embodiment 4 difference lies in methacrylic acid is not contained in comparative example 3, other keep one with embodiment 4 It causes.
Comparative example 4
Comparative example 4 and embodiment 4 difference lies in not containing methacrylic acid and sugar calcium simultaneously in comparative example 4, other with reality Example 4 is applied to be consistent.
Comparative example 5
Difference lies in do not contain methacrylic acid and sugar calcium and copolymerization iso-amylene in comparative example 5 simultaneously with embodiment 4 for comparative example 5 Polyoxyethylene ether, other are consistent with embodiment 4.
Wherein according to the detection method of concrete made of Examples 1 to 7 component to made of the component of comparative example 1~5 The performance of concrete is detected.
Detection project Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Comparative example 5
3d compression strength (MPa) 25.23 25.05 24.15 20.89 20.25
28d compression strength (MPa) 42.15 42.62 41.61 38.65 35.70
Wear-resisting property It is qualified It is qualified It is qualified It is bad It is bad
Cracking resistance Well Well Well It is qualified It is qualified
The experimental result of comparative example 4 and comparative example 1 does not contain copolymerization iso-amylene polyoxy in the component of comparative example 1 During vinethene, the reduced performance of concrete made of component, then the performance of concrete can be produced by illustrating the presence of modifying agent It is raw to influence;The experimental result of comparative example 4 and comparative example 2 when not containing sugar calcium in comparative example 2, is mixed made of component The reduced performance of soil is coagulated, then the performance of concrete can be had an impact by illustrating the presence of retarder;Comparative example 4 and comparison The experimental result of example 3, when methacrylic acid is not contained in component, the reduced performance of concrete made of component then illustrates The presence of water-reducing agent can have an impact the performance of concrete;The experimental result of comparative example 4 and comparative example 4, in component In simultaneously when not containing modifying agent and retarder, the performance of concrete made of component occur it is apparent change, applicant can be with There are the properties that the function and effect of cooperation can change concrete component between modifying agent and retarder in reasonable expectation;Comparison The experimental result of embodiment 4 and comparative example 5 does not contain methacrylic acid and sugar calcium and copolymerization iso-amylene polyoxy simultaneously in component During vinethene, bigger change occurs for concrete made of component, then applicant can reasonably speculate methacrylic acid and sugar There are the function and effect of cooperation between calcium and copolymerization iso-amylene polyoxyethylene ether, the wherein presence of water-reducing agent can be with retarder network It closes, and modifying agent exists and sugar calcium can be had an impact, whole when three is used cooperatively, performance is excellent.
The above be only the present invention exemplary embodiment, protection domain and is not intended to limit the present invention, this hair Bright protection domain is determined by appended claim.

Claims (9)

1. a kind of mass concrete, it is characterized in that:Include the component of following parts by weight:230 ~ 235 parts of cement, flyash 110 ~ 120 parts, 160 ~ 165 parts of water, 75 ~ 80 parts of miberal powder, 850 ~ 860 parts of middle sand, grain size be 5 ~ 25mm 735 ~ 740 parts of rubble, Grain size is 7 ~ 7.8 parts of 0.001 ~ 0.005 part of 1 ~ 1.5 part of 220 ~ 225 parts of rubble, modifying agent, retarder, the water-reducing agent of 5 ~ 10mm.
2. mass concrete according to claim 1, it is characterized in that:The modifying agent selection copolymerization methacrylic acid, The one kind being copolymerized in iso-amylene polyoxyethylene ether.
3. mass concrete according to claim 1, it is characterized in that:The retarder selection carbohydrate retarder and lemon The mixing of acids retarder.
4. mass concrete according to claim 3, it is characterized in that:The carbohydrate retarder selection sugar calcium or glucose Sour calcium.
5. mass concrete according to claim 3, it is characterized in that:The lemon acids retarder selection 3- hydroxyls- Penta 3 acid of 1,3,5- or tartaric acid.
6. mass concrete according to claim 1, it is characterized in that:Water-reducing agent selection poly carboxylic acid series water reducer or Lignosulfonates based water reducer.
7. mass concrete according to claim 6, it is characterized in that:The polycarboxylate water-reducer selects methacrylic acid Or maleic anhydride.
8. mass concrete according to claim 6, it is characterized in that:The lignosulfonates based water reducer selection wood Quality sulfonate sodium or lignin sulfonic acid sylvite.
9. a kind of preparation process of mass concrete, it is characterized in that:Including following preparation process:
Step 1:By cement, middle sand, grain size are the rubble of 5 ~ 25mm, grain size is 5 ~ 10mm rubble, flyash, miberal powder, modification Agent and water sequentially add 1 ~ 3min of stirring in blender, are uniformly mixed;
Step 2:Continue to add in retarder into blender and water-reducing agent is stirred 2 ~ 4min, discharge.
CN201711498504.0A 2017-12-29 2017-12-29 Mass concrete and its preparation process Pending CN108129092A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108726939A (en) * 2018-07-13 2018-11-02 苏州园林发展股份有限公司 A kind of crack resistence concrete and its casting craft
CN108821655A (en) * 2018-07-02 2018-11-16 深圳市东大洋建材有限公司 A kind of regeneration concrete and preparation method thereof
CN108911603A (en) * 2018-07-26 2018-11-30 上海石化安东混凝土有限公司 A kind of mass concrete and its preparation and construction technology

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102241497A (en) * 2011-06-01 2011-11-16 上海建工材料工程有限公司 Concrete with ultra-large volume, high strength and low hydration heat
CN103011659A (en) * 2012-12-21 2013-04-03 江西迪特科技有限公司 Super retarding high-performance water reducer
CN103342522A (en) * 2013-07-18 2013-10-09 江苏广亚建材有限公司 Cracking resisting concrete

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102241497A (en) * 2011-06-01 2011-11-16 上海建工材料工程有限公司 Concrete with ultra-large volume, high strength and low hydration heat
CN103011659A (en) * 2012-12-21 2013-04-03 江西迪特科技有限公司 Super retarding high-performance water reducer
CN103342522A (en) * 2013-07-18 2013-10-09 江苏广亚建材有限公司 Cracking resisting concrete

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
施惠生等编著: "《混凝土外加剂实用技术大全》", 31 January 2008, 中国建材工业出版社 *
王涛等: "超缓凝大体积混凝土配合比优化及温控技术", 《硅酸盐通报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108821655A (en) * 2018-07-02 2018-11-16 深圳市东大洋建材有限公司 A kind of regeneration concrete and preparation method thereof
CN108726939A (en) * 2018-07-13 2018-11-02 苏州园林发展股份有限公司 A kind of crack resistence concrete and its casting craft
CN108911603A (en) * 2018-07-26 2018-11-30 上海石化安东混凝土有限公司 A kind of mass concrete and its preparation and construction technology
CN108911603B (en) * 2018-07-26 2021-02-09 上海石化安东混凝土有限公司 Large-volume concrete and preparation and construction process thereof

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Application publication date: 20180608