CN107417187A - A kind of crack resistence concrete and preparation method thereof - Google Patents

A kind of crack resistence concrete and preparation method thereof Download PDF

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Publication number
CN107417187A
CN107417187A CN201710747960.8A CN201710747960A CN107417187A CN 107417187 A CN107417187 A CN 107417187A CN 201710747960 A CN201710747960 A CN 201710747960A CN 107417187 A CN107417187 A CN 107417187A
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CN
China
Prior art keywords
flyash
crack resistence
water
sand
stone
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CN201710747960.8A
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Chinese (zh)
Inventor
张小军
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Susong Shang Ting Building Materials Co Ltd
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Susong Shang Ting Building Materials Co Ltd
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Priority to CN201710747960.8A priority Critical patent/CN107417187A/en
Publication of CN107417187A publication Critical patent/CN107417187A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant materials
    • 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)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a kind of crack resistence concrete, described crack resistence concrete includes cement, sand, stone, water, water reducer, modacrylic fibers and flyash；Wherein, each raw material proportioning is as follows：Stone is 1050 1180kg/m3, cement is 200 290kg/m3, sand is 700 900kg/m3, water be 145 180kg/m3, water reducer be 4 7kg/m3, modacrylic fibers are 2 8kg/m3, flyash is 70 110kg/m3, fed intake by formula and be prepared into different types of crack resistence concrete.The present invention, so as to enhance the shock resistance of crack resistence concrete and internal adhesive strength, reduces its cracking probability by adding modacrylic fibers and flyash, and then improves its toughness, increases the service life.

Description

A kind of crack resistence concrete and preparation method thereof
Technical field
The present invention relates to technical field of concrete, specially a kind of shock resistance is high, not easy to crack crack resistence coagulation Soil.
Background technology
In the prior art the preparation of concrete simply by cement, sand, stone, water and water reducer are mixed with and Into the advantages of, such concrete be compression strength is high, materials easily, easy-formation, it is cheap, can be combined and be made with steel Various supporting members, but its deadly defect is that shock resistance is low, easy to crack, so as to reduce the carrying of concrete structure Ability, reduction of service life, turn into the hidden danger of various disaster accidents.
The content of the invention
It is an object of the invention to provide crack resistence concrete, to solve the impact resistance proposed in above-mentioned background technology Can be low, easy to crack the problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of crack resistence concrete, described crack resistence concrete include cement, sand, stone, water, water reducer, modification Polyacrylic fibre and flyash；
Wherein, each raw material proportioning is as follows：Stone is 1050-1180kg/m3, cement 200-290kg/m3, sand is 700-900kg/m3, water 145-180kg/m3, water reducer 4-7kg/m3, modacrylic fibers 2-8kg/m3, powder Coal ash is 70-110kg/m3。
Preferably, the particle diameter of the stone is 5-31.5mm, and the particle diameter of the sand is 0.16-5mm.
Preferably, the clay content of the stone is≤5%, and the clay content of the sand is≤3%.
Preferably, each raw material proportioning is as follows：Stone is 1100-1130kg/m3, cement 220-260kg/m3, sand is 780-850kg/m3, water 155-170kg/m3, water reducer 3-6kg/m3, modacrylic fibers 2-8kg/m3, powder Coal ash is 90-110kg/m3。
Preferably, each raw material proportioning is as follows：Each raw material proportioning is as follows：Stone is 1106kg/m3, cement 246kg/m3, sand Son is 770kg/m3, water 166kg/m3, water reducer 5.12kg/m3, modacrylic fibers 3.76kg/m3, fine coal Ash is 78.41kg/m3。
Preferably, in the preparation process of modified polypropylene fiber, tetraethyl orthosilicate, ethanol is mixed, are warming up to 50- 60 DEG C, 15-20min is incubated, adds polypropylene fibre, polyethylene glycol 2000 mixes, dropwise addition aqueous hydrochloric acid solution, insulated and stirred 30- 50min, ammonia aqueous solution is added dropwise, adjusts pH=5-6, stand 1-2 days, regulation temperature is 40-60 DEG C, is dried under reduced pressure and is changed Property polyacrylic fibre.
Preferably, the flyash in its component passes through following processing before use：
(1) stirred in the mixer for first having operated mixture of fly ash input, then dilute sulfuric acid is slowly added to fine coal Acidification is carried out in grey mixture；
(2) being calcined in the ash transfer after acidification to swinging drying oven, roasting time is 1~3 hour, Sintering temperature is controlled at 250~350 DEG C, flyash water content≤5% after roasting；
(3) deposit is worn into fine powder by the flyash after being calcined, and is then filtered, is dried, the flyash handled well.
Preferably, particle diameter≤0.05mm of the flyash.
The preparation method of above-mentioned crack resistence concrete is：
At 20-30 DEG C, by stone, cement, sand and water are added in mixer and mixed and stirred, then by water reducer, change Property polyacrylic fibre and flyash be added sequentially in mixer, stir 10-20min.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is by adding modacrylic fibers and powder Coal ash, so as to enhance the shock resistance of crack resistence concrete and internal adhesive strength, reduce its cracking probability, Jin Erti Its high toughness, increases the service life.
Embodiment
The present invention is further detailed below by specific embodiment, it should be appreciated that, the description below is only In order to explain the present invention, its content is not defined.Unless otherwise instructed, following components are parts by weight.
In following embodiments, sand used is Ganjiang River river sand, and its performance is as follows：
In following embodiments, water reducer used is the SD-A type poly carboxylic acid series water reducers of Susong still ancient cooking vessel sale, and performance is such as Under：
Total alkali content (%) Solid content (%) Addition content (%) Diminishing amount (%)
2 40 3 22
In following embodiments, the performance of stone used is as follows：
In following embodiments, cement used is middle PO42.5 class g cements, and its performance is as follows：
In following embodiments, the performance of flyash used is as follows：
In the preparation process of modified polypropylene fiber, tetraethyl orthosilicate, ethanol are mixed, are warming up to 50-60 DEG C, is protected Warm 15-20min, addition polypropylene fibre, polyethylene glycol 2000 mix, dropwise addition aqueous hydrochloric acid solution, insulated and stirred 30-50min, Ammonia aqueous solution is added dropwise, adjusts pH=5-6, stands 1-2 days, regulation temperature is 40-60 DEG C, is dried under reduced pressure to obtain and is modified poly- third Olefin(e) acid fiber is standby.
Embodiment 1
At 20-30 DEG C, stone 1050kg/m3, cement 210kg/m3, sand 730kg/m3, water 150kg/m3、 Water reducer is 4-7kg/m3, modacrylic fibers 3kg/m3, flyash 70kg/m3It is mixed and stirred for 10-20min, Crack resistence concrete product A1 is made, wherein, the clay content of the stone is≤5%, and the clay content of the sand is≤3%. Then shock resistance detection is carried out to A1 by 3 days, 10 days and 30 days respectively and cleavage strength detects, testing result is shown in Table 1。
Embodiment 2
At 20-30 DEG C, stone 1100kg/m3, cement 270kg/m3, sand 880kg/m3, water 180kg/m3、 Water reducer is 4-7kg/m3, modacrylic fibers 7kg/m3, flyash 105kg/m3It is mixed and stirred for 10-20min, Crack resistence concrete product A2 is made, wherein, the clay content of the stone is≤5%, and the clay content of the sand is≤3%. Then shock resistance detection is carried out to A2 by 3 days, 10 days and 30 days respectively and cleavage strength detects, testing result is shown in Table 1。
Embodiment 3
At 20-30 DEG C, stone 1106kg/m3, cement 246kg/m3, sand 770kg/m3, water 166kg/m3、 Water reducer is 5.12kg/m3, modacrylic fibers 3.76kg/m3, flyash 78.41kg/m3It is mixed and stirred for 10- 20min, crack resistence concrete product A3 is made, wherein, the clay content of the stone is≤5%, and the clay content of the sand is ≤ 3%.Then shock resistance detection is carried out to A3 by 3 days, 10 days and 30 days respectively and cleavage strength detects, detection knot Fruit is shown in Table 1.
Embodiment 4
Carried out according to the method for embodiment 3, except that being pre-processed to the flyash that it is added, crack resistence is made Concrete product A4, shock resistance detection then is carried out to A4 by 3 days, 10 days and 30 days respectively and cleavage strength detects, Testing result is shown in Table 1.
The processing method of flyash is as follows：
(1) stirred in the mixer for first having operated mixture of fly ash input, then dilute sulfuric acid is slowly added to fine coal Acidification is carried out in grey mixture；
(2) being calcined in the ash transfer after acidification to swinging drying oven, roasting time is 1~3 hour, Sintering temperature is controlled at 250~350 DEG C, flyash water content≤5% after roasting；
(3) deposit is worn into fine powder by the flyash after being calcined, and is then filtered, is dried, the flyash handled well.
Comparative example 1
Carried out according to the method for embodiment 1, except that modacrylic fibers are 0kg, crack resistence coagulation is made Native product B1, shock resistance detection then is carried out to B1 by 3 days, 10 days and 30 days respectively and cleavage strength detects, detection It the results are shown in Table 1.
Comparative example 2
Carried out according to the method for embodiment 1, except that flyash is 0kg, crack resistence concrete product B2 be made, Then shock resistance detection is carried out to B2 by 3 days, 10 days and 30 days respectively and cleavage strength detects, testing result is shown in Table 1。
Table 1
By table 1, by adding modacrylic fibers and flyash, so as to enhance crack resistence concrete Shock resistance and internal adhesive strength, reduce its cracking probability, and then improve its bearing capacity, increase the service life, and And the performance of crack resistence concrete made of can further being improved after flyash to be carried out to acidification.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, nothing By from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by institute Attached claim rather than described above limit, it is intended that will fall in the implication and scope of the equivalency of claim All changes include in the present invention.Moreover, it will be appreciated that although the present specification is described in terms of embodiments, simultaneously Non- each embodiment only include an independent technical scheme, this narrating mode of specification only for clarity, The skilled in the art should refer to the specification as a whole, and the technical solutions in the various embodiments may also be suitably combined, Other embodiments which can be understood by those skilled in the art for formation.

Claims (9)

1. a kind of crack resistence concrete, it is characterised in that described crack resistence concrete includes cement, sand, stone, water, subtracted Aqua, modacrylic fibers and flyash；
Wherein, each raw material proportioning is as follows：Stone is 1050-1180kg/m3, cement 200-290kg/m3, sand 700- 900kg/m3, water 145-180kg/m3, water reducer 4-7kg/m3, modacrylic fibers 2-8kg/m3, flyash is 70-110kg/m3。
2. crack resistence concrete according to claim 1, it is characterised in that the particle diameter of the stone is 5-31.5mm, institute The particle diameter for stating sand is 0.16-5mm.
3. crack resistence concrete according to claim 1, it is characterised in that the clay content of the stone is≤5%, described The clay content of sand is≤3%.
4. crack resistence concrete according to claim 1, it is characterised in that each raw material proportioning is as follows：Stone is 1100- 1130kg/m3, cement 220-260kg/m3, sand 780-850kg/m3, water 155-170kg/m3, water reducer 3- 6kg/m3, modacrylic fibers 2-8kg/m3, flyash 90-110kg/m3。
5. crack resistence concrete according to claim 1, it is characterised in that each raw material proportioning is as follows：Stone is 1106kg/ m3, cement 246kg/m3, sand 770kg/m3, water 166kg/m3, water reducer 5.12kg/m3, modified polyacrylic acid fibre Tie up as 3.76kg/m3, flyash 78.41kg/m3。
6. crack resistence concrete according to claim 1, it is characterised in that in the preparation process of modified polypropylene fiber In, tetraethyl orthosilicate, ethanol are mixed, are warming up to 50-60 DEG C, is incubated 15-20min, adds polypropylene fibre, polyethylene glycol 2000 mix, and aqueous hydrochloric acid solution is added dropwise, insulated and stirred 30-50min, ammonia aqueous solution is added dropwise, adjusts pH=5-6, stands 1-2 My god, regulation temperature is 40-60 DEG C, is dried under reduced pressure to obtain modacrylic fibers.
7. crack resistence concrete according to claim 1, it is characterised in that the flyash in its component passes through before use Handle below：
(1) stirred in the mixer for first having operated mixture of fly ash input, then dilute sulfuric acid is slowly added to flyash and mixed Acidification is carried out in compound；
(2) will be calcined in the ash transfer after acidification to swinging drying oven, roasting time is 1~3 hour, roasting temperature Degree control is at 250~350 DEG C, flyash water content≤5% after roasting；
(3) deposit is worn into fine powder by the flyash after being calcined, and is then filtered, is dried, the flyash handled well.
8. crack resistence concrete according to claim 1, it is characterised in that particle diameter≤0.05mm of the flyash.
9. the preparation method of the crack resistence concrete according to claim 1-8 any one, it is characterised in that in 20-30 At DEG C, by stone, cement, sand and water are added in mixer and mixed and stirred, then by water reducer, modacrylic fibers and Flyash is added sequentially in mixer, stirs 10-20min.
CN201710747960.8A 2017-08-28 2017-08-28 A kind of crack resistence concrete and preparation method thereof Pending CN107417187A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108218402A (en) * 2017-12-30 2018-06-29 汪逸凡 A kind of preparation method of gunning refractory
CN110981328A (en) * 2019-11-08 2020-04-10 北京城建亚泰金砼混凝土有限公司 Anti-cracking concrete and production process thereof
CN111170683A (en) * 2019-11-08 2020-05-19 北京城建亚泰金砼混凝土有限公司 Radiation-proof concrete and production process thereof
CN112341059A (en) * 2020-11-24 2021-02-09 唐山友顺混凝土有限公司 Anti-cracking concrete and preparation method thereof
CN113582611A (en) * 2021-07-21 2021-11-02 南通吉泰新型建材有限公司 Lightweight high-strength foam concrete
CN115028401A (en) * 2022-06-07 2022-09-09 嘉兴市博奥建材有限公司 Anti-cracking concrete and production process thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128352A (en) * 2014-07-27 2014-11-05 许盛英 Acidified fly ash
CN106116354A (en) * 2016-06-28 2016-11-16 蚌埠市方阵商品混凝土有限公司 A kind of crack resistence concrete

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128352A (en) * 2014-07-27 2014-11-05 许盛英 Acidified fly ash
CN106116354A (en) * 2016-06-28 2016-11-16 蚌埠市方阵商品混凝土有限公司 A kind of crack resistence concrete

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108218402A (en) * 2017-12-30 2018-06-29 汪逸凡 A kind of preparation method of gunning refractory
CN110981328A (en) * 2019-11-08 2020-04-10 北京城建亚泰金砼混凝土有限公司 Anti-cracking concrete and production process thereof
CN111170683A (en) * 2019-11-08 2020-05-19 北京城建亚泰金砼混凝土有限公司 Radiation-proof concrete and production process thereof
CN112341059A (en) * 2020-11-24 2021-02-09 唐山友顺混凝土有限公司 Anti-cracking concrete and preparation method thereof
CN112341059B (en) * 2020-11-24 2022-04-12 唐山友顺混凝土有限公司 Anti-cracking concrete and preparation method thereof
CN113582611A (en) * 2021-07-21 2021-11-02 南通吉泰新型建材有限公司 Lightweight high-strength foam concrete
CN115028401A (en) * 2022-06-07 2022-09-09 嘉兴市博奥建材有限公司 Anti-cracking concrete and production process thereof

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