CN104211345B - The concrete of misfiring utilizing normal sands to prepare - Google Patents
The concrete of misfiring utilizing normal sands to prepare Download PDFInfo
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- CN104211345B CN104211345B CN201410496278.2A CN201410496278A CN104211345B CN 104211345 B CN104211345 B CN 104211345B CN 201410496278 A CN201410496278 A CN 201410496278A CN 104211345 B CN104211345 B CN 104211345B
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Abstract
A kind of concrete of misfiring utilizing normal sands to prepare, it be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; Coarse aggregate of misfiring employing particle diameter is rhombspar or the Wingdale of 10 ~ 20mm; Normal sands adopts fineness modulus to be the fine sand of 1.6 ~ 2.1; One or more in water reducer, retardant, softening agent, composite mud earth adsorbing selected by admixture.Raw materials weight proportion is gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture is 100:130 ~ 202:230 ~ 343:38 ~ 58:1.0 ~ 2.0.Concrete of misfiring of the present invention can not only meet concrete misfiring property, and its physicals and mechanical property meet codes and standards requirement, and its compound method is simple, and cost is low, can wide popularization and application.
Description
Technical field
The present invention relates to a kind of concrete, be specifically related to a kind of concrete of misfiring utilizing normal sands to prepare, belong to building material technical field.
Background technology
Along with the development of modern economy, special fire-fighting requirement of explosion proof is all had in regions such as some military project manufactures, liquefied petroleum-gas station, gas production factory, oiling storehouse, petrol station harbour, textile mills, printing house and other inflammable and explosive engineering, warehouses, very tight in order to ensure the requirement of keeping the safety in production to earth material, must misfiring property be had.So-called misfiring property refers to " when material therefor and the hard thing such as metal or stone rub, impact or the mechanical effect such as scouring abrasion time; not flashing (or Mars); cause inflammable substance to cause the danger of fire or blast; the reason that ground is got angry comprises two aspects, mechanical shock, friction produce static focus.When spark reaches certain energy, and when external conditions possesses, just cause the disaster of burning, blast.So necessarily require ground to have misfiring property guarantee safety.
Non sparking floor is the building material of misfiring that a kind of emerging expense is low, have some strength, can be divided into two large classes by building material character, namely misfire Metal ground and nonmetal ground of misfiring.Misfire Metal ground, its material generally conventional non-ferrous metal such as copper coin, aluminium sheet makes.Non-metallic material of misfiring ground, the ground that organic materials of misfiring manufactures can be divided into again, as pitch, timber, plastics, rubber etc. lay, but due to the poorly conductive of these materials, there are insulating property, therefore unfavorable to leading away electrostatic, when with this material, the grounding device of leading away electrostatic must be considered simultaneously; Another kind is inorganic materials ground of misfiring, and is to adopt the manufacture of sand of misfiring, the stone preparation inorganic materials such as pea gravel concreten, terrazzo, and aggregate can be selected generally can the material of misfiring such as Wingdale, marble, rhombspar.
Concrete of misfiring be one can experience a shock friction and do not produce pyrophoric special concrete, also known as antiexplosive concrete.Take silicate series cement as gelling material, and mix certain blended material and admixture in proportion, the component such as aggregate, water of misfiring, a kind of ceramic stirred according to a certain percentage.
The definition of misfiring property of concrete: when all material and the hard objects such as metal or stone rub, impact or the mechanical effect such as scouring abrasion time, not flashing (or Mars), cause inflammable substance to cause the danger of getting angry or exploding, be and there is misfiring property.The qualification that material is misfired, can adopt emery wheel to carry out.Complete darkness is answered, to be easy at the trial see spark in the room of test.The grinding wheel diameter of test is 150mm, and during test, its rotating speed should be 600-1000r/min, and in darkroom, check that it is separated the ability of spark.
Concrete of misfiring generally does fine aggregate with the powder that rhombspar, Wingdale are worn into, and coarse aggregate used also can only use marble, rhombspar, Wingdale rubble, can meet requirement of misfiring, also should meet the requirement of ultimate compression strength.
Contriver retrieves following patent documentation: CN101092849A discloses a kind of concrete composite floor of anti-static non-ignition, comprise surface layer and basic unit, described surface layer is ordinary portland cement and the water of thickness 10-30mm, misfire stone particle and admixture can reduce the friction reducer of resistivity mixes the bed of material, between the surface layer adopting conventional means to make and the basic unit with key coat, the electrostatic adopting metal wire knitted to become is set and lets out wire guide, node place wiry arranges grounded metal guide rod, after connecting with wire between each grounded metal guide rod, access common ground is extremely gone up.This technology can not only meet concrete misfiring property for how making concrete, and its physicals and mechanical property meet codes and standards requirement, do not provide concrete guidance program.
Summary of the invention
Technical problem to be solved by this invention is, a kind of concrete of misfiring utilizing normal sands to prepare is provided, this concrete can not only meet concrete misfiring property, and its physicals and mechanical property meet codes and standards requirement, its compound method is simple, cost is low, can wide popularization and application.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of concrete of misfiring utilizing normal sands to prepare, its technical scheme be it be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 1.6 ~ 2.1; One or more in water reducer, retardant, softening agent, composite mud earth adsorbing selected by described admixture; Raw materials weight proportion is:
Gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:130 ~ 202:230 ~ 343:38 ~ 58:1.0 ~ 2.0.
In technique scheme, the described concrete of misfiring utilizing normal sands to prepare be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 2.1 ~ 1.8; Raw materials weight proportion is: gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:130 ~ 160:230 ~ 260:38 ~ 50:1.5 ~ 2.0 (can be 100:150:240:40:2.0), the combination of water reducer, retardant, three kinds, softening agent selected by described admixture, described water reducer, retardant, softening agent three weight proportion are 1:2:0.5, described water reducer is ordinary water-reducing agent, select calcium lignin sulphonate, boric acid selected by retardant, and dibutyl phthalate selected by softening agent.
In technique scheme, the described concrete of misfiring utilizing normal sands to prepare be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 1.8 ~ 1.6; Raw materials weight proportion is: gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:160 ~ 185:260 ~ 310:40 ~ 45:1.0 ~ 1.5 (can be 100:170:280:43:1.2), composite mud earth adsorbing selected by described admixture, and this composite mud earth adsorbing adopts the technical scheme in CN103466987B the disclosed embodiments 1 to obtain (this composite mud earth adsorbing is the commodity that market is sold).
In technique scheme, the described concrete of misfiring utilizing normal sands to prepare is mixed in proportion by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture to stir formulated, described gelling material cement and adopt strength grade to be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 2.0; Ordinary water-reducing agent selected by described admixture; Raw materials weight proportion is: gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:195:325:45:1.5.
The compound method of the present invention's (concrete of misfiring utilizing normal sands to prepare) is, first to the coarse aggregate selected, the test of misfiring property of fine aggregate, according to strength of cement grade, strength grade of concrete and construction requirement, carry out mix Design, make strength grade of concrete, workability meets design and construction requirement, shaping concrete is misfired performance test, by adjustment proportioning, to misfiring, concrete property indices is optimized further, draws mix proportion of misfiring.The present invention is by a large amount of testing datas, and the fine sand being 1.6 ~ 2.1 with fineness modulus substitutes rhombspar or Wingdale fine aggregate, and concrete batching strength grade is the concrete of misfiring of C20-C30, and the concrete cost that makes to misfire reduces greatly.
(1) concrete starting material of misfiring are selected
Preparing concrete key of misfiring is starting material, draw materials according to the existing several starting material in this area, because misfire, strength grade of concrete general requirement is not too high, gelling material we have selected slag 32.5 silicate cement, coarse-fine aggregate have selected the rhombspar coarse-fine aggregate that Lingshou produces, the Wingdale coarse-fine aggregate that Jingxing produces.
1.1 rhombspar test-results
1.2 Wingdale test-results
(2) the misfiring property after misfire concrete mixture characteristic and sclerosis is studied
After raw material is determined, preparation concrete key of misfiring is by adjusting the design variable ratio of proportioning, making concrete all technical meet service requirements.Construction requirement is met for concrete mixture performance, ensures that concrete workability is good, do not emanate, not bleeding.For concrete performance of misfiring research for emery wheel different rotating speeds and apply power change under concrete case study of misfiring.Different material concrete is carried out to the comparison of performance and cost, determine optimum mix.
(3) for the ease of analyzing test-results, simplify labor capacity, adopt positive quadraturing design test method to study concrete performance of misfiring, with different materials, different grinding wheel speeds, the different external force that applies studies aggregate and concrete misfiring property.
(4) to misfire concrete with the preparation of the normal sands of different fineness, find out applicable preparation and to misfire concrete sand fineness.
4.1 different fineness sands are misfired mortar test result
Concrete floor of misfiring of the present invention through detecting, (GB50209-2010) requirement that property indices meets " Code for construction and acceptance of ground and floor engineering ", to survey ultimate compression strength be 23 ~ 39.8MPa; To misfire test: misfire, wear resistance :≤0.03g.
In sum, the concrete of misfiring utilizing normal sands to prepare of the present invention can not only meet concrete misfiring property, and its physicals and mechanical property meet codes and standards requirement, and its compound method is simple, cost is low, can wide popularization and application.
Embodiment
Embodiment 1: the concrete of misfiring utilizing normal sands to prepare of the present invention be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 2.1 ~ 1.8; Preparation C30 high performance concrete, gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:130 ~ 160:230 ~ 260:38 ~ 50:1.5 ~ 2.0 (can be 100:150:240:40:2.0); The combination of water reducer, retardant, three kinds, softening agent selected by described admixture, described water reducer, retardant, softening agent three weight proportion are 1:2:0.5, described water reducer is ordinary water-reducing agent, select calcium lignin sulphonate, boric acid selected by retardant, dibutyl phthalate selected by softening agent, the technical feature of concrete batching: the slump is 120-180mm, and concrete crushing strength is 34.5-39.8MPa.
Embodiment 2: the concrete of misfiring utilizing normal sands to prepare of the present invention be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 1.8 ~ 1.6; The normal concrete of preparation C25, gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:160 ~ 185:260 ~ 310:40 ~ 45:1.0 ~ 1.5 (can be 100:170:280:43:1.2); Composite mud earth adsorbing selected by described admixture, and this composite mud earth adsorbing adopts the technical scheme in CN103466987B the disclosed embodiments 1 to obtain (this composite mud earth adsorbing is the commodity that market is sold).The technical feature of concrete batching: the slump is 60-100mm, concrete crushing strength is 28.5-34.7MPa.
Example 3 (application example of the present invention): the stone refinery quality oil product upgrading of Hebei Zhen Yuan construction work company limited construction and crude oil in poor quality improvement project-hazardous material refuse temporary storage ground, for the concrete floor of misfiring that the thick strength grade of 50mm is C20, starting material: slag 32.5 class g cement that cement adopts Luquan Xun Ta building materials company limited to produce, stone adopts 10 ~ 20mm rhombspar, sand is fineness modulus is 2.0 common fine sands, admixture is ordinary water-reducing agent, the mix proportion scheme finally determined is: gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:195:325:45:1.5, adopt the concrete workability of this proportioning mixing, cohesiveness good, the slump is 40mm, and concrete crushing strength is 27.8MPa.Meet construction requirement.
This concrete construction step is as follows:
1, technical process
Look for absolute altitude, play surface layer sea line → base treatment → moistening → cake of plastering of sprinkling water → smear mark muscle → brush plain-water slurry → build pea gravel concreten → float coat press polish → maintenance.
2, key Quality Control
The control of 2.1 planeness
The control of floor elevation is the key ensureing its planeness, and post is apart from time larger, and it is inadequate for only leaning against and post is ferreted out 50 lines, must increase reference mark.Use steel pipe as mark muscle on the ground, carry out levelling at any time simultaneously with spirit-leveling instrument according to 50 lines to shaped steel, steel pipe, with beating with taking out, vibrating and adopting truss type vibrator.And check planeness with 4m aluminium alloy thick stick chi.
2.2 smooth finish control
Carry out smearing pressure for twice with electric trowel to turn over a finished item, add that steel disk is levelling, compacting below first time electric trowel, after some strength to be achieved, second time electric trowel press polish compacting, makes ground light cleanliness reach service requirements.
The control in 2.3 cracks
The method taking piecemeal to arrange gap for the contingent contraction of concrete floor, thermal cracking solves.With sawing seam after concrete reaches intensity, the width of seam is preferably 5mm, and its degree of depth is preferably 8cm, fills out the sand-cement slurry of 1:3 in seam.And leave the gap of 30mm on ground and wall, intercolumniation, to make the sedimentation on ground and other component separate, in gap, fill out flexible materials.Partitioning slot spacing 3 ~ 3.5m.
Embodiment 4: gelling material cement in the present embodiment: normal sands: coarse aggregate of misfiring: water: admixture=100:130:230:38:1.0, or gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:200:340:58:1.9.The other the same as in Example 1 or embodiment 2 or embodiment 3.
Claims (2)
1. the concrete of misfiring utilizing normal sands to prepare, it is characterized in that it be by gelling material cement, normal sands, coarse aggregate of misfiring, water, admixture be mixed in proportion stir formulated, described gelling material cement adopt strength grade be 32.5 Portland cement or strength grade be the slag cement of 32.5; It is the Wingdale of 10 ~ 20mm that described coarse aggregate of misfiring adopts particle diameter to be the rhombspar of 10 ~ 20mm or particle diameter; Described normal sands adopts fineness modulus to be the fine sand of 2.1 ~ 1.8; Raw materials weight proportion is:
Gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:130 ~ 160:230 ~ 260:38 ~ 50:1.5 ~ 2.0,
The combination of water reducer, retardant, three kinds, softening agent selected by described admixture, described water reducer, retardant, softening agent three weight proportion are 1:2:0.5, described water reducer is ordinary water-reducing agent, select calcium lignin sulphonate, boric acid selected by retardant, and dibutyl phthalate selected by softening agent.
2. the concrete of misfiring utilizing normal sands to prepare according to claim 1, is characterized in that raw materials weight proportion is:
Gelling material cement: normal sands: coarse aggregate of misfiring: water: admixture=100:150:240:40:2.0.
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| CN105924062A (en) * | 2016-04-28 | 2016-09-07 | 十九冶成都建设有限公司 | Spark-proof concrete prepared from fine stone |
| CN105948618A (en) * | 2016-04-28 | 2016-09-21 | 十九冶成都建设有限公司 | Non-sparking concrete prepared by utilizing machine-made sand and preparation method thereof |
| CN105948616A (en) * | 2016-04-28 | 2016-09-21 | 十九冶成都建设有限公司 | Non-sparking concrete and preparation method therefor |
| CN106082796A (en) * | 2016-06-06 | 2016-11-09 | 北京中德新亚建筑技术有限公司 | One is misfired pea gravel concreten and preparation method thereof |
| CN106278056A (en) * | 2016-08-24 | 2017-01-04 | 王文明 | The concrete of misfiring of using mechanism sand preparation |
| CN106587823A (en) * | 2016-12-09 | 2017-04-26 | 中建局集团装饰工程有限公司 | Non-sparking wear-resisting concrete and method for carrying out floor construction through concrete |
| CN108264291A (en) * | 2017-01-03 | 2018-07-10 | 五冶集团上海有限公司 | One kind is misfired concrete pouring construction method |
| CN109180092B (en) * | 2018-10-23 | 2021-11-30 | 安徽省安达节能科技有限公司 | Anti-static non-ignition ground material and preparation method thereof |
| CN111003998B (en) * | 2019-12-24 | 2021-08-31 | 成都宏基建材股份有限公司 | Non-ignition self-compacting concrete and preparation method thereof |
| CN112266226B (en) * | 2020-10-29 | 2022-06-17 | 李金锁 | Non-ignition cement-based self-leveling mortar and preparation method thereof |
| CN113402207A (en) * | 2021-06-23 | 2021-09-17 | 中德新亚建筑材料有限公司 | Preparation method of high-ductility non-ignition super-wear-resistant hardening agent |
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| JP2631414B2 (en) * | 1990-07-26 | 1997-07-16 | 鹿島建設株式会社 | Mortar filling method to concrete gap in reverse driving method |
| CN100540501C (en) * | 2006-05-09 | 2009-09-16 | 上海恒方防腐工程有限公司 | A kind of anti-static non-ignition wear-resisting floor material and constructional method thereof |
| CN101580363B (en) * | 2008-05-16 | 2013-01-16 | 中冶集团建筑研究总院 | Cement-based self-leveling material capable of being used for electrostatic prevention |
| CN102674760A (en) * | 2012-04-24 | 2012-09-19 | 本钢板材股份有限公司 | Composition for manufacturing explosion-proof concrete |
| CN103466987B (en) * | 2013-09-16 | 2014-07-30 | 石家庄市长安育才建材有限公司 | Composite soil adsorbent for preventing high-content soil in concrete from adsorbing poly-carboxylic water reducer, and preparation method and using method of composite soil adsorbent |
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