CN101219882B - Method for producing concrete blending material by using igneous rock - Google Patents

Method for producing concrete blending material by using igneous rock Download PDF

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Publication number
CN101219882B
CN101219882B CN2008100087334A CN200810008733A CN101219882B CN 101219882 B CN101219882 B CN 101219882B CN 2008100087334 A CN2008100087334 A CN 2008100087334A CN 200810008733 A CN200810008733 A CN 200810008733A CN 101219882 B CN101219882 B CN 101219882B
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CN
China
Prior art keywords
volcanic rock
concrete
slag
percent
igneous rock
Prior art date
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.)
Expired - Fee Related
Application number
CN2008100087334A
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Chinese (zh)
Other versions
CN101219882A (en
Inventor
陈平
刘荣进
贾韶辉
马帅
安庆锋
李海东
王一靓
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Guilin University of Technology
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Guilin University of Technology
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Publication date
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Priority to CN2008100087334A priority Critical patent/CN101219882B/en
Publication of CN101219882A publication Critical patent/CN101219882A/en
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Publication of CN101219882B publication Critical patent/CN101219882B/en
Expired - Fee Related 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
    • 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
    • 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
    • C04B2103/10—Accelerators; Activators
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • C04B2111/74—Underwater applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a method preparing admixture of concrete by use of igneous rock. The specific procedures are that (1) the igneous rock, fly ash and slag are mixed by quality percent ratio of 50 to 100 percent, 0 to 50 percent and 0 to 50 percent; (2) active activator accounting for 0 to 15 percent (by mass percentage) of the sum of the igneous rock, fly ash and slag is added and uniformlymixed; the mixture is placed into a ball mill for milling; the active activator is one in calcium oxide, calcined gypsum, mirabilite and alum; the mixture is milled until reaching a specific surface area of 400 to 600m<2>/kg, thus obtaining the admixture of igneous rock for concrete. The invention is simple in production, wide in material source, low in cost, little in electricity consumption during milling, and applicable to industry, civil construction as well as underground and harbor projects.

Description

A kind of method of utilizing volcanic rock to prepare concrete admixture
Technical field
The invention belongs to building material technical field, particularly a kind of method of utilizing volcanic rock to prepare concrete admixture.
Background technology
Volcanic rock claims magmatite and sedimentogeneous rock, metamorphosed rock to be known as one of three big rock types together again, is formed by magma condensation behind underground or the ejection face of land.The formation temperature of volcanic rock is higher, and generally between 700 ℃～1500 ℃, the mass percent of its oxygen level is up to 46%.The dissimilar of volcanic rock alter a great deal on composition, mainly by 12 class mineral compositions such as quartz, feldspar, pyroxene, amphibole, mica, peridotites, nepheline, white garnet and phosphatic rock.The mineral color is according to SiO 2+ Al 2O 3Different with the relative content of FeO+MgO, SiO 2+ Al 2O 3Be light color at most, it is dark that FeO+MgO is at most.Volcanic rock is divided into pleocrystalline, miocrystalline and three kinds of volcanic rock of the glassiness by crystallization degree, and common volcanic rock is a crystalline, and small portion is the glassiness.The volcanic rock that this paper mentions belongs to the shallow-layer irruptive rock, is positioned at below the 10m of the face of land, and the silicate minerals crystallization is better, SiO 2And Al 2O 3Content is more than 85%, the outward appearance pinkiness, and unit weight is at 2200kg/m 3About.
Volcanic rock making cement blended material report is less, and is on the low side with its strength of cement of making because itself is active limited, has been difficult to have the market competitiveness after cement new-standard is implemented.In addition, because its quality coefficient is lower, poor activity also is not suitable for directly as concrete adulterant.
Summary of the invention
Purpose of the present invention is exactly the problem that exists in the volcanic rock development and use, a kind of preparation method that can realize suitability for industrialized production and be used for concrete volcanic rock adulterant is provided, and the adulterant of preparation can utilize the natural crystal and the solid industrial residue of occurring in nature in a large number.And can under admixture effect suitably,, prepare the concrete that satisfies the respective strengths class requirement by cooperating with other sandstone material.
Concrete steps of the present invention are as follows:
(1) all drying materials to water ratio less than 1%, volcanic rock, flyash and slag three 50～100%, 0～50%, 0～50% are prepared burden by mass percentage;
(2) add activity excitant, its quantity is 0～15% (mass percent of volcanic rock, flyash and slag three total mass, down together), mix, put into ball mill and carry out grinding, activity excitant is a kind of in unslaked lime, bassanite, saltcake and the alum, and grinding is to specific surface area 400～600m 2/ kg promptly gets the volcanic rock concrete admixture.
Know-why: take to grind interior grinding when this volcanic rock micro mist is produced, select the incorporate novel process of powder, the grinding energy consumption significantly reduces, and the volcanic rock grinding can be become specific surface area 〉=400m 2The fine powder of/kg with rational gradation composition.Grinding makes the volcanic rock micro mist produce a large amount of new sections, makes its lattice surface produce abnormalization simultaneously, thereby its hydration activity is improved greatly.The selective separation process that carries out makes the thickness particle separately simultaneously, and coarse particles returns to be regrinded, and fine particle enters next link, has avoided the bad phenomenon of " thick is thinless, and thin is thinner ", has saved electric energy greatly, has improved the grain composition of volcanic rock.Simultaneously, the volcanic rock in the adulterant, flyash and three components of slag are positioned at CaO-Al in phasor 2O 3-SiO 2System all belongs to inclined to one side alumina-silica silicate.Although each self-forming technology difference all contains a large amount of vitreums, contain as flyash and to float pearl, microballon (being small vitreum) in a large number, and volcanic rock and slag also can produce a large amount of vitreums at violent temperature-fall period.Studies have shown that, there is substantial connection in active and vitreum, under the situation that has water to exist, hydrated environment around suitable exciting agent can significantly change, the activity glass body is dissociated and with the calcium hydroxide effect, produce hydrated products such as hydrated calcium silicate, drated calcium aluminate, thereby promote the development of cement stone, significantly improve concrete intensity.In addition, because a large amount of vitreums are arranged, particle surface is more smooth, and this surface property has formed slick translational surface between cement slurry, and concrete slump is increased, and has improved concrete workability.
That the present invention produces is easy, raw material sources are wide, cost is low, the grinding little power consumption, can be widely used in industry, covil construction, underground and harbour engineering.Prepared volcanic rock adulterant, the one, can equivalent replace part cement, save cost, the fine powder of the volcanic rock after the activation has the hydration activity similar to cement, and the hydrated product that the reaction back generates in water makes cement stone have intensity; On the other hand, the fine powder of responseless volcanic rock as a kind of fine filler, is filled between the cement granules in concrete, makes concrete more closely knit, thereby has improved concrete weather resistance.
Embodiment
Embodiment 1:
The weight percent of volcanic rock adulterant feed composition is: volcanic rock 100%.
(1) volcanic rock is dried to water ratio less than 1%.
(2) exciting agent of adding volcanic rock quality 2% is a bassanite, mixes, and puts into the ball mill grinding to specific surface area 500m 2/ kg promptly gets the volcanic rock adulterant.
By every cubic meter of concrete, cement 230kg, volcanic rock adulterant 80kg, water cement ratio 0.56, sand coarse aggregate ratio 0.45, FDN high efficiency water reducing agent 3.2kg.
3 days ultimate compression strength 14.7MPa of the concrete that is configured, 28 days ultimate compression strength 29Mpa, slump 180mm.
Embodiment 2:
The weight percent of volcanic rock adulterant feed composition is: volcanic rock 50%, slag 50%.
(1) volcanic rock and slag are dried respectively to water ratio less than 1%.
(2) exciting agent of adding volcanic rock and slag total amount 8% is a unslaked lime, mixes, and puts into the ball mill grinding to specific surface area 450m 2/ kg promptly gets the volcanic rock adulterant.
By every cubic meter of concrete, cement 210kg, volcanic rock adulterant 100kg, water cement ratio 0.56, sand coarse aggregate ratio 0.45, FDN high efficiency water reducing agent 2.67kg.
3 days ultimate compression strength 15.5MPa of the concrete that is configured, 28 days ultimate compression strength 33.5MPa, slump 200mm.
Embodiment 3:
The weight percent of volcanic rock adulterant feed composition is: volcanic rock 50%, flyash 50%.
(1) volcanic rock is dried to water ratio less than 1%.
(2) exciting agent of adding volcanic rock and flyash total amount 5% is a bassanite, mixes, and puts into the ball mill grinding to specific surface area 550m 2/ kg promptly gets the volcanic rock adulterant.
By every cubic meter of concrete, cement 280kg, volcanic rock adulterant 80kg, water cement ratio 0.47, sand coarse aggregate ratio 0.42, FDN high efficiency water reducing agent 2.30kg.
3 days ultimate compression strength 20MPa of the concrete that is configured, 28 days ultimate compression strength 39.6Mpa, slump 210mm.
Embodiment 4:
The weight percent of volcanic rock adulterant feed composition is: volcanic rock 50%, flyash 25%, slag 25%.
(1) volcanic rock and slag are dried respectively to water ratio less than 1%.
(2) exciting agent of adding volcanic rock, flyash and slag total amount 15% is a unslaked lime, mixes, and puts into the ball mill grinding to specific surface area 520m 2/ kg promptly gets the volcanic rock adulterant.
By every cubic meter of concrete, cement 360kg, volcanic rock adulterant 140kg, water cement ratio 0.40, sand coarse aggregate ratio 0.40, FDN high efficiency water reducing agent 3.16kg.
3 days ultimate compression strength 34.6MPa of the concrete that is configured, 28 days ultimate compression strength 57.2Mpa, slump 200mm.
Can find out that by above four assembly ratio all more than 160mm, workability is good for slump, volcanic rock adulterant volume was at 10～30% o'clock, and workability of concrete of being prepared and ultimate compression strength can satisfy C20～C50 grade strength concrete design requirements.

Claims (1)

1. method of utilizing volcanic rock to prepare concrete admixture is characterized in that concrete steps are:
(1) be raw material with volcanic rock, flyash and slag, all raw material stoving to water ratio less than 1%, with volcanic rock, flyash and slag three by mass percentage 50～100%, greater than 0 being less than or equal to 50%, being less than or equal to 50% greater than 0 and preparing burden, above-mentioned volcanic rock, flyash and scoriaceous quality percentage composition sum equal 100%;
(2) add activity excitant, its quality be volcanic rock, flyash and slag three total mass per-cent be less than or equal to 15% greater than 0, mix, put into ball mill and carry out grinding, activity excitant is a kind of in unslaked lime, bassanite, saltcake and the alum, and grinding is to specific surface area 400～600m 2/ kg promptly gets the volcanic rock concrete admixture.
CN2008100087334A 2008-01-22 2008-01-22 Method for producing concrete blending material by using igneous rock Expired - Fee Related CN101219882B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008100087334A CN101219882B (en) 2008-01-22 2008-01-22 Method for producing concrete blending material by using igneous rock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008100087334A CN101219882B (en) 2008-01-22 2008-01-22 Method for producing concrete blending material by using igneous rock

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CN101219882A CN101219882A (en) 2008-07-16
CN101219882B true CN101219882B (en) 2011-08-03

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101638925B (en) * 2009-08-19 2010-10-27 济南大学 Polystyrene foam compound light sandwich panel using slags
CN101792296B (en) * 2010-02-04 2012-01-25 同济大学 Concrete erosion-resistant agent based on ultrafine slag powder and use method thereof
CN102745932A (en) * 2012-06-29 2012-10-24 张仲 Preparation method and application of PD composite mineral admixture containing silica fume
CN105130349B (en) * 2015-07-15 2017-06-23 东南大学 A kind of base pit engineering water-stop curtain material based on industrial residue
CN109626854A (en) * 2019-01-30 2019-04-16 江苏金木土科技有限公司 A kind of high-performance commerical ready-mixed concrete admixture
CN111138106A (en) * 2020-01-15 2020-05-12 中国铁道科学研究院集团有限公司铁道建筑研究所 Igneous rock mineral admixture for railway high-performance concrete
CN115259730B (en) * 2022-05-23 2023-07-14 长江水利委员会长江科学院 Concrete composite admixture containing tuff powder and preparation method thereof

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Granted publication date: 20110803

Termination date: 20120122