CN105645836A - High-flowability anti-cracking concrete additive and preparation method thereof - Google Patents
High-flowability anti-cracking concrete additive and preparation method thereof Download PDFInfo
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- CN105645836A CN105645836A CN201610014106.6A CN201610014106A CN105645836A CN 105645836 A CN105645836 A CN 105645836A CN 201610014106 A CN201610014106 A CN 201610014106A CN 105645836 A CN105645836 A CN 105645836A
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- concrete additive
- water reducer
- high fluidity
- type concrete
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-flowability anti-cracking concrete additive and a preparation method thereof, relating to the technical field of building materials. The concrete additive is prepared from bentonite, fly ash, gypsum, alum sludge, latex powder, sodium silicate, boric acid, a water reducing agent, an air entraining agent and a composite flowable agent. The high-flowability anti-cracking concrete additive has excellent strength, toughness, stability and the like. The air entraining agent is introduced to further enhance the slump retention of concrete and increase the flowability of concrete. The high-flowability anti-cracking concrete additive is especially suitable for roads and bridges.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of high fluidity anti-cracking type concrete additive and preparation method thereof.
Background technology
In recent years, along with country's greatly developing Transportation Infrastructure Construction, highway in China is built net and is developed rapidly. During this period, there is the physical features such as the substantial amounts of mountains and rivers, valley due to China, this necessarily requires the connection of thousands of bridge construction. Concrete filled steel tube due to its structure there is bearing capacity height, from heavy and light, the advantage such as plasticity is good, endurance, anti-seismic performance are good, and apply widely with in Longspan Bridge engineering construction.
Known concrete component (such as concrete railway sleeper, the foundation engineering of national defence durability, cement bridge floor, bridge, highway bed course etc.) is rigid structure. At present, its comprcssive strength is more focused in the judge of known concrete component, therefore, existing concrete component comprcssive strength is bigger, but lacking toughness, rupture strength relatively low (rupture strength of existing concrete is the 10%-15% of comprcssive strength), concrete component matter is crisp, and be full of cracks, breakage easily occurs in surface; Main cause is that the capillary porosity (also referred to as porosity) that after concrete setting, it is interior is higher, and particle bond stress is poor; So, concrete component is under the effect of (frequently) moment weight or impulsive force, cause concrete component (frequently) ultimate bearing and make component surface that be full of cracks, breakage to occur, not only reducing the service life of concrete component, during badly broken, component fracture will cause crushing accident.
Summary of the invention
(1) solve the technical problem that
For the deficiencies in the prior art, the present invention provides a kind of high fluidity anti-cracking type concrete additive and preparation method thereof, this concrete additive in intensity, toughness, stability etc. on performance excellence, it is simultaneously introduced air entraining agent, concrete slump retaining can also be increased further, increase concrete fluidity, be particularly well-suited to road and bridge.
(2) technical scheme
For realizing object above, the present invention is achieved by the following technical programs:
A kind of high fluidity anti-cracking type concrete additive, it is characterized in that, be made up of the raw material of following weight portion: bentonite 80��100 parts, 75��90 parts of flyash, 60��70 parts of Gypsum Fibrosum, 55��78 parts of vitriol mud, latex powder 10��40 parts, sodium silicate 10��18 parts, boric acid 3��8 parts, water reducer 8��14 parts, air entraining agent 4��10 parts, complex flow agent 8��16 parts.
Preferably, described high fluidity anti-cracking type concrete additive is made up of the raw material of following weight portion: bentonite 85��90 parts, 78��86 parts of flyash, 62��68 parts of Gypsum Fibrosum, 59��73 parts of vitriol mud, latex powder 13��34 parts, sodium silicate 13��17 parts, boric acid 4��7 parts, water reducer 9��12 parts, air entraining agent 5��8 parts, complex flow agent 9��12 parts.
Preferably, described high fluidity anti-cracking type concrete additive is made up of the raw material of following weight portion: bentonite 88 parts, 81 parts of flyash, 64 parts of Gypsum Fibrosum, 65 parts of vitriol mud, latex powder 20 parts, sodium silicate 15 parts, boric acid 5 parts, water reducer 11 parts, air entraining agent 6 parts, complex flow agent 10 parts.
Preferably, described water reducer is one or more in naphthalene water reducer, ligninsulfonate, poly carboxylic acid series water reducer.
Preferably, described water reducer is poly carboxylic acid series water reducer.
Preferably, described air entraining agent is one or more in rosin derivative, sulfonate, 2, 2-Oxydiphenol or alcohol ether.
Preferably, to be pressed 1:1��2:1��3 by amino silane, epoxy radicals silicone hydride and methyl-silicone oil formulated in described complex flow agent.
Preferably, the preparation method of described high fluidity anti-cracking type concrete additive, comprise the following steps:
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.0��1.5mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 50��80 DEG C, with 500��800rpm Rate Dispersion 10��15min;
(4) when rotating speed < when 55 ��m, is down to 200rpm��400rpm, is added water reducer, air entraining agent and complex flow agent, and continue dispersion mixing 5��10min with 800��1000rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
(3) beneficial effect
The invention provides a kind of high fluidity anti-cracking type concrete additive and preparation method thereof, compared with prior art, there is advantages that
(1) latex powder of the present invention can increase concrete crack resistance with Gypsum Fibrosum, the preparation of vitriol mud.
(2) present invention adopts complex flow agent, can improve concrete service behaviour and mobility, significantly improves the intensity of concrete each age, can effectively improve concrete volume stability simultaneously.
(3) present invention introduces air entraining agent, it is possible to increase concrete slump retaining further, increase concrete fluidity.
(4) the raw materials used wide material sources of the present invention, preparation cost is low, and safety and environmental protection.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that, described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1:
The present embodiment high fluidity anti-cracking type concrete additive, is made up of the raw material of following weight portion: bentonite 85 parts, 78 parts of flyash, 62 parts of Gypsum Fibrosum, 59 parts of vitriol mud, latex powder 13 parts, sodium silicate 13 parts, boric acid 4 parts, poly carboxylic acid series water reducer 9 parts, rosin derivative 5 parts, complex flow agent (amino silane: epoxy radicals silicone hydride: methyl-silicone oil is by=1:1:1) 9 parts.
Preparation method, comprises the following steps:
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.0mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 60 DEG C, with 600rpm Rate Dispersion 12min;
(4) when rotating speed < when 55 ��m, is down to 300rpm, is added poly carboxylic acid series water reducer, rosin derivative and complex flow agent, and continue dispersion mixing 6min with 800rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
Embodiment 2:
The present embodiment high fluidity anti-cracking type concrete additive, is made up of the raw material of following weight portion: bentonite 86 parts, 79 parts of flyash, 63 parts of Gypsum Fibrosum, 63 parts of vitriol mud, latex powder 21 parts, sodium silicate 14 parts, boric acid 5 parts, poly carboxylic acid series water reducer 9 parts, 7 parts of sulfonate, complex flow agent (amino silane: epoxy radicals silicone hydride: methyl-silicone oil is by=1:2:2) 10 parts.
Preparation method, comprises the steps:
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.2mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 65 DEG C, with 650rpm Rate Dispersion 10min;
(4) when rotating speed < when 55 ��m, is down to 350rpm, is added poly carboxylic acid series water reducer, sulfonate and complex flow agent, and continue dispersion mixing 5min with 800rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
Embodiment 3:
The present embodiment high fluidity anti-cracking type concrete additive, is made up of the raw material of following weight portion: bentonite 88 parts, 81 parts of flyash, 64 parts of Gypsum Fibrosum, 65 parts of vitriol mud, latex powder 20 parts, sodium silicate 15 parts, boric acid 5 parts, poly carboxylic acid series water reducer 11 parts, air entraining agent (sulfonate: 2, 2-Oxydiphenol=1:2) 6 parts, complex flow agent (amino silane: epoxy radicals silicone hydride: methyl-silicone oil is by=1:2:1) 10 parts.
Preparation method, comprises the steps:
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.5mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 70 DEG C, with 750rpm Rate Dispersion 12min;
(4) when rotating speed < when 55 ��m, is down to 250rpm, is added poly carboxylic acid series water reducer, air entraining agent and complex flow agent, and continue dispersion mixing 10min with 800rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
Embodiment 4:
The present embodiment high fluidity anti-cracking type concrete additive, is made up of the raw material of following weight portion: bentonite 90 parts, 86 parts of flyash, 668 parts of Gypsum Fibrosum, 73 parts of vitriol mud, latex powder 34 parts, sodium silicate 17 parts, boric acid 7 parts, poly carboxylic acid series water reducer 12 parts, alcohol ether 8 parts, complex flow agent (amino silane: epoxy radicals silicone hydride: methyl-silicone oil is by=1:1:3) 12 parts.
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.5mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 80 DEG C, with 80rpm Rate Dispersion 15min;
(4) when rotating speed < when 55 ��m, is down to 400rpm, is added poly carboxylic acid series water reducer, alcohol ether and complex flow agent, and continue dispersion mixing 10min with 1000rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
It should be noted that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Above example is only in order to illustrate technical scheme, it is not intended to limit, although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a high fluidity anti-cracking type concrete additive, it is characterized in that, be made up of the raw material of following weight portion: bentonite 80��100 parts, 75��90 parts of flyash, 60��70 parts of Gypsum Fibrosum, 55��78 parts of vitriol mud, latex powder 10��40 parts, sodium silicate 10��18 parts, boric acid 3��8 parts, water reducer 8��14 parts, air entraining agent 4��10 parts, complex flow agent 8��16 parts.
2. high fluidity anti-cracking type concrete additive according to claim 1, it is characterized in that, be made up of the raw material of following weight portion: bentonite 85��90 parts, 78��86 parts of flyash, 62��68 parts of Gypsum Fibrosum, 59��73 parts of vitriol mud, latex powder 13��34 parts, sodium silicate 13��17 parts, boric acid 4��7 parts, water reducer 9��12 parts, air entraining agent 5��8 parts, complex flow agent 9��12 parts.
3. high fluidity anti-cracking type concrete additive according to claim 1, it is characterized in that, be made up of the raw material of following weight portion: bentonite 88 parts, 81 parts of flyash, 64 parts of Gypsum Fibrosum, 65 parts of vitriol mud, latex powder 20 parts, sodium silicate 15 parts, boric acid 5 parts, water reducer 11 parts, air entraining agent 6 parts, complex flow agent 10 parts.
4. high fluidity anti-cracking type concrete additive according to claim 1, it is characterised in that described water reducer is one or more in naphthalene water reducer, ligninsulfonate, poly carboxylic acid series water reducer.
5. high fluidity anti-cracking type concrete additive according to claim 4, it is characterised in that described water reducer is poly carboxylic acid series water reducer.
6. high fluidity anti-cracking type concrete additive according to claim 1, it is characterised in that described air entraining agent is one or more in rosin derivative, sulfonate, 2, 2-Oxydiphenol or alcohol ether.
7. high fluidity anti-cracking type concrete additive according to claim 1, it is characterised in that it is formulated that described complex flow agent is pressed 1:1��2:1��3 by amino silane, epoxy radicals silicone hydride and methyl-silicone oil.
8. the preparation method according to the arbitrary described high fluidity anti-cracking type concrete additive of claim 1��7, it is characterised in that comprise the following steps:
(1) each component is weighed by above-mentioned weight percent part stand-by;
(2) bentonite, flyash, Gypsum Fibrosum, vitriol mud and latex powder being crushed to particle diameter in disintegrating machine is 1.0��1.5mm;
(3) putting in dispersing mixer by the mixture after broken, be subsequently added sodium silicate and boric acid, constant temperature water bath 50��80 DEG C, with 500��800rpm Rate Dispersion 10��15min;
(4) when rotating speed < when 55 ��m, is down to 200rpm��400rpm, is added water reducer, air entraining agent and complex flow agent, and continue dispersion mixing 5��10min with 800��1000rpm speed, obtain homodisperse concrete additive by fineness of dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610014106.6A CN105645836A (en) | 2016-01-05 | 2016-01-05 | High-flowability anti-cracking concrete additive and preparation method thereof |
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| CN201610014106.6A CN105645836A (en) | 2016-01-05 | 2016-01-05 | High-flowability anti-cracking concrete additive and preparation method thereof |
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| CN105645836A true CN105645836A (en) | 2016-06-08 |
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| CN201610014106.6A Pending CN105645836A (en) | 2016-01-05 | 2016-01-05 | High-flowability anti-cracking concrete additive and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970903A (en) * | 2016-07-13 | 2016-09-28 | 安徽省水利水电勘测设计院 | Plastic concrete mattress layer for enhancing pile and soil combined effect of composite foundation |
| CN112321195A (en) * | 2020-12-02 | 2021-02-05 | 句容市星辰新型材料有限公司 | Limestone accelerator |
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| CN101708969A (en) * | 2009-11-05 | 2010-05-19 | 惠州市富力新技术有限公司 | Cement concrete admixture for quickly repairing cement concrete roads |
| CN103145371A (en) * | 2013-03-01 | 2013-06-12 | 武汉理工大学 | High-flowability high-strength super-retarded steel tube concrete additive and preparation method thereof |
| CN103755204A (en) * | 2014-01-23 | 2014-04-30 | 李永红 | Anti-crack radiation-proof concrete additive |
| CN103880322A (en) * | 2014-02-09 | 2014-06-25 | 黄小仙 | Method for preparing constructional composite mineral admixture |
-
2016
- 2016-01-05 CN CN201610014106.6A patent/CN105645836A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708969A (en) * | 2009-11-05 | 2010-05-19 | 惠州市富力新技术有限公司 | Cement concrete admixture for quickly repairing cement concrete roads |
| CN103145371A (en) * | 2013-03-01 | 2013-06-12 | 武汉理工大学 | High-flowability high-strength super-retarded steel tube concrete additive and preparation method thereof |
| CN103755204A (en) * | 2014-01-23 | 2014-04-30 | 李永红 | Anti-crack radiation-proof concrete additive |
| CN103880322A (en) * | 2014-02-09 | 2014-06-25 | 黄小仙 | Method for preparing constructional composite mineral admixture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970903A (en) * | 2016-07-13 | 2016-09-28 | 安徽省水利水电勘测设计院 | Plastic concrete mattress layer for enhancing pile and soil combined effect of composite foundation |
| CN112321195A (en) * | 2020-12-02 | 2021-02-05 | 句容市星辰新型材料有限公司 | Limestone accelerator |
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Application publication date: 20160608 |
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