CN104529323B - A kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement - Google Patents
A kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement Download PDFInfo
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- CN104529323B CN104529323B CN201410744411.1A CN201410744411A CN104529323B CN 104529323 B CN104529323 B CN 104529323B CN 201410744411 A CN201410744411 A CN 201410744411A CN 104529323 B CN104529323 B CN 104529323B
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- 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
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Abstract
The present invention relates to a kind of refractory material, more particularly, to a kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement.The present invention includes following weight percent composition：Heavy blast furnace slag aggregate：40‑80%；Portland cement：10‑20%；Slag micropowder：10‑20%；Flyash：0‑10%；Fine silica powder：0‑10%；Then sodium tripolyphosphate is added in above-mentioned raw materials：0.01 0.03%, sodium metaphosphate：0.01‑0.03%.The present invention substitutes refractory material using metallurgical solid waste State of Blast Furnace dry slag and does refractory aggregate, binder materials is using slag powders and the metallurgical solid waste material of flyash powder, the Portland cement of bonding agent non-refractory, take full advantage of existing metallurgical slag resource, silicate and aluminate high-temperature resistant water compound are formed in cement hydration process, the generation of the unstable earnest of hydroxide is reduced, the source of heat resistance concrete raw material is enriched, reduces the cost of heat resistance concrete.
Description
Technical field
The present invention relates to a kind of refractory material, full weight slag aggregate is prepared with Portland cement more particularly, to one kind
Heat resistance concrete.
Background technology
The composition material of general heat resistance concrete includes refractory aggregate（Coarse aggregate and fine aggregate）, refractory powder, admixture,
Bonding agent etc., wherein main fireproof raw material aggregate is general still with the stable fireproof raw material of performance, its heat resistance
More than 1200 DEG C are reached, for producing less than 700 DEG C of heat resistance concrete, not only serious waste refractory material Resources, together
When cause to waste one's talent on a petty job, lose more than gain, before the present invention makes, existing heat resistance concrete engineering is all traditionally to use
Refractory material does the coarse-fine aggregate of heat resistance concrete, recycles high temperature resistant cement-alumina cement and water to be formed by quantitative cooperation,
But because refractory raw material will be formed by adopting ore processing, transport, calcining, its cost all will height compared with heavy blast furnace slag.
Relevant comparative's data
1st, heavy blast furnace slag heat resistance concrete and its performance are combined
The document is used for 700 heat resistance concretes, and its bonding agent slag cements, heavy blast furnace slag produces for Anshan iron and steel plant, and its is critical
Granularity is different from the present invention, only 5mm, and critical granularity is smaller, higher with respect to heat-resistant stability, but causes its normal temperature strength to be
22-33.6MPa, and 700 DEG C of residual strength index is also in 50-66%.And the heat-resisting coagulation of heavy blast furnace slag mentioned in the document
The heat resistance of soil is impossible up to 700-1200 DEG C, because heavy blast furnace slag is produced during blast furnace process molten iron
Waste residue is on molten iron, and the temperature range of its manUfaCtUre of pig iron is 1200-1300 DEG C, and it is liquid at 1200 DEG C to illustrate heavy blast furnace slag
State form, it is impossible to the intensity with so-called aggregate, for heat resistance up to 1200 DEG C the following is infeasible.
2nd, the experiment of slag aggregate concrete heat resistance
The document is used for less than 700 DEG C of heat resistance concrete, and bonding agent with resistant to elevated temperatures slag cements also with can be collected
What material was selected is horse steel blast-furnace cinder, and its baked strength is 31.4-33.8MPa, and 700 DEG C of residual strengths are 11.4-17.8MPa.
The content of the invention
The technical problems to be solved by the invention are：A kind of heat resistance concrete is provided, the heat resistance concrete is all using bag
Steel metallurgical solid waste, reduces production cost, Resources exploitation is reduced, while decreasing heavy blast furnace slag in Baogang
It is a large amount of store up occupation of land problem, decrease problem of environmental pollution, also have and also solve non-refractory using other solid slags
Ordinary portland cement make the bonding agent of heat resistance concrete；It is 110 ± 5 DEG C of bulk density that product physical index, which is made, and 24h is 2.65-
2.72g/cm3, after normal temperature maintenance in 7 days, it is 42.8-59MPa that compressive resistance is dried in 110 DEG C, 700 DEG C, is incubated 3h, its high temperature is residual
Residual strength reaches 24.8-38MPa, accounts for the 53-68% that normal temperature dries compressive resistance；Or 600 DEG C, 3h is incubated, its residual strength after high temperature reaches
27.4-40MPa, accounts for the 59-72% that normal temperature dries compressive resistance, Linear change rate is between ± 1%.
The present invention by solution it is set forth above the problem of use solution for：
A kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement, its characteristic is, including following
The component of percentage by weight：
Heavy blast furnace slag aggregate：40-80%；Portland cement：10-20%；Slag micropowder：10-20%；Flyash：0-
10%；Fine silica powder：0-10%；Then percentage adds sodium tripolyphosphate by weight：0.01-0.03%；Sodium metaphosphate：
0.01-0.03%。
Heavy blast furnace slag of the present invention should have stable structure, such as have no the generation of lime, silicate and iron decomposing phenomenon,
Also require that it is nature Slow cooling, sort out foamed slag therein, impurity, the heavy blast furnace slag after magnetic separation simultaneously.
Slag micropowder requirement meets standard GB/T18046-2008《For the granulated blast-furnace slag in cement and concrete
Powder》S75 level index.
Flyash requirement meets standard GB/T1496-2005《For the flyash in cement and concrete》Two grades with
Under, its loss on ignition is not more than 5%.
Fine silica powder meets standard GB/T21236-2007《Electric furnace reclaims fine silica powder》In SF85 ranks.
Portland cement meets standard GB175-2007《Common portland cement》In P.O42.5 ranks.
Further：In the heavy blast furnace slag aggregate, CaO content therein cannot be greater than 45%, and critical grain size cannot be greater than
20mm, its aggregate strength-crush values are not more than 16%.
Further：By above-mentioned raw materials component index on request, aggregate and slag micropowder, fine coal that heavy blast furnace slag level is matched somebody with somebody
Ash, the powders mixture of fine silica powder press 6-7：After 3-4 part by weight is well mixed, then by the 10- of raw material gross weight
16% ratio adds Portland cement bonding agent, and is sufficiently mixed uniformly, stirring is added water before use, because of blast furnace
The voidage of dry slag is big compared with refractory material, and its is hygroscopic, in order to ensure the service behaviour of concrete meet use requirement, it is necessary to
Proper extension mixing time, on the one hand in order to ensure the homogenieity of concrete；On the other hand mushy dry slag coagulation is prevented
Water phenomenon is returned in local products life, influences the embodiment of its later stage performance.
The obtained product physical index of the present invention is 110 ± 5 DEG C of bulk density, and 24h is 2.65-2.72g/cm3, normal temperature 7 days
After maintenance, it is 42.8-59MPa that compressive resistance is dried in 110 DEG C, 700 DEG C, is incubated 3h, its residual strength after high temperature reaches 24.8-
38MPa, accounts for the 53-68% that normal temperature dries compressive resistance；Or 600 DEG C, 3h is incubated, its residual strength after high temperature reaches 27.4-40MPa,
The 59-72% that normal temperature dries compressive resistance is accounted for, Linear change rate is between ± 1%.
Feature is the present invention compared with prior art：Slag aggregate of the prior art is the production slag such as Anshan iron and steel plant, bonding agent
It is slag class high temperature resistant cement, and the present invention is to do to gather materials using Baogang BF dry slag, utilizes the general silicon of non-refractory
Cement and activity is good and to make admixture with metallurgical solid waste that cement can form high temperature resistant ore deposit phase cementing to be configured to high temperature resistant
Material, reaches the high effect of high temperature resistant, intensity, while its normal temperature strength of heat resistance concrete and the residual strength after high temperature of its development all compare
The height of pertinent literature.
Desired value of the physical properties index of the present invention than current standard is much higher, is that one kind makes with popularity
With the Novel furnace material of value.Easily, rationally, preparation technology is relatively easy, can be greatly reduced for match ratio for sorting of the present invention
The cost of raw material, is a rare new material, new technology, frontier.Turn waste into wealth, be to produce high extensively using solid waste
Value-added product provides wide Utilization prospects.The present invention needs accordingly to be built with heat resistance concrete material suitable for national economy
Build in each field of engineering.
The present invention be directed to the disadvantages mentioned above of existing heat resistance concrete aggregate, to the main raw material(s) of heat resistance concrete-
Refractory aggregate is replaced, and the waste residue heavy blast furnace slag produced is smelted with Baogang BF and just meets less than 700 DEG C resistance to
The performance requirements of hot concrete, and larger economic and social benefits can be produced, compared with prior art, of the invention is excellent
Putting is：Refractory material, which is substituted, all of metallurgical solid waste State of Blast Furnace dry slag does refractory aggregate, and its binder materials is all used
The metallurgy solid waste material such as slag powders and flyash powder, the Portland cement of bonding agent non-refractory takes full advantage of
Existing metallurgical slag resource, forms the high-temperature resistant water compound of silicate and aluminate etc. in cement hydration process, reduces hydrogen
The generation of the shakiness earnest such as oxide, enriches the source of heat resistance concrete raw material, reduces the cost of heat resistance concrete, solve
The problem that dry slag difficulty is utilized, is the utilization of dry slag opens new way.
The present invention is that the solid waste heavy blast furnace slag produced first all of Baogang does the bone of heat resistance concrete first
Material；Second, being the ordinary portland cement using non-refractory, filling the metallurgical solid waste constituted into a certain amount of different minerals makes it in water
Corresponding reaction occurs in the hydration process of mud, produces resistant to elevated temperatures mineral structure to improve the non-refractory of its ordinary portland cement
Property, change its mineral composition；Third, waste residue-the heavy blast furnace slag produced using blast furnace process, substitutes the non-refractory of sandstone,
The high refractory material of alternative materials cost, produces low-cost and high-performance, high added value simultaneously, and it is a large amount of to also solve occupancy
Store up place, pollute environment, do not reach the value and utilizing status of application, preferably make the effective land productivity of bits stored up
With enabling Baogang's metallurgical solid waste to reach early " zero-emission ".
Embodiment
Illustrated below according to embodiment.
Embodiment 1：
Aggregate is chosen：
Calcium oxide content 38% is chosen, matches somebody with somebody rational blast furnace with stable structure and intensity-crush values for 13.8% level
Dry slag coarse-fine aggregate.Wherein particle diameter 5-20mm 39kg, particle diameter are 0-5mm 26kg.
The selection of powder：
The admixture of standard requirement will be met：Slag micropowder, flyash and fine silica powder press 2.4：1.5：0.4 weight
Amount is premixed to uniform than carrying out dispensing.
The preparation of compound：
The particle diameter 5-20mm got ready 39kg, particle diameter are first added into progress premix in mixer for 0-5mm 26kg to be bonded to
Uniformly, add 18kg cement and 17kg admixtures are mixed, then add sodium tripolyphosphate and each 14g of sodium metaphosphate and water
16kg, is stirred 2-3 minutes, untill being well mixed, and does not produce excreting water phenomenon.
The obtained product physical index of the present invention is 110 ± 5 DEG C of bulk density, and 24h is 2.68g/cm3, normal temperature maintenance in 7 days
Afterwards, it is 46.4MPa that compressive resistance is dried in 110 DEG C, 700 DEG C, is incubated 3h, its residual strength after high temperature reaches 27MPa, accounts for normal temperature drying
The 58% of compressive resistance；Or 600 DEG C, 3h is incubated, its residual strength after high temperature reaches 28.8MPa, accounts for normal temperature drying compressive resistance
62%, Linear change rate is 0.8%.
Embodiment 2：
Aggregate is chosen：
Calcium oxide content 42% is chosen, the level for being not more than 12% with stable structure and intensity-crush values is matched somebody with somebody rational high
Stove dry slag coarse-fine aggregate, wherein particle diameter 5-20mm 39kg, particle diameter are 0-5mm 26kg.
The selection of powder：
Flyash, slag micropowder and the fine silica powder of standard requirement will be met by 2.6：1.3：0.6 weight ratio enters
Row dispensing, and premixed to uniform.
The preparation of compound：
The particle diameter 5-20mm got ready 39kg, particle diameter are first added into progress premix in mixer for 0-5mm 26kg to be bonded to
Uniformly, add 15kg cement and 20kg admixtures are mixed, then add sodium tripolyphosphate and each 14g of sodium metaphosphate and water
16kg, is stirred 2-3 minutes, untill being well mixed, and does not produce excreting water phenomenon.
The obtained product physical index of the present invention is 110 ± 5 DEG C of bulk density, and 24h is 2.66g/cm3, normal temperature maintenance in 7 days
Afterwards, it is 45MPa that compressive resistance is dried in 110 DEG C, 700 DEG C, is incubated 3h, its residual strength after high temperature reaches 28.3MPa, accounts for normal temperature drying
The 63% of compressive resistance；Or 600 DEG C, 3h is incubated, its residual strength after high temperature reaches 29.3MPa, accounts for normal temperature drying compressive resistance
65%, Linear change rate is 0.5%.
Embodiment 3：
Aggregate is chosen：
Calcium oxide content 36% is chosen, the level for being not more than 11.4% with stable structure and intensity-crush values matches somebody with somebody rational
Heavy blast furnace slag coarse-fine aggregate, wherein particle diameter 5-20mm 40.6kg, particle diameter are 0-5mm 29.4kg.
The selection of powder：
Flyash, slag micropowder and the fine silica powder of standard requirement will be met by 2.2：1.0：0.3 weight ratio enters
Row dispensing, and premixed to uniform.
The preparation of compound：
The particle diameter 5-20mm got ready 40.6kg, particle diameter are first added in mixer for 0-5mm 29.4kg and premixed
It is bonded to uniformly, adds 12kg cement and 18kg admixtures are mixed, then adds sodium tripolyphosphate and each 14g of sodium metaphosphate and water
16kg, is stirred 2-3 minutes, untill being well mixed, and does not produce excreting water phenomenon.
The obtained product physical index of the present invention is 110 ± 5 DEG C of bulk density, and 24h is 2.66g/cm3, normal temperature maintenance in 7 days
Afterwards, it is 58.4MPa that compressive resistance is dried in 110 DEG C, 700 DEG C, is incubated 3h, its residual strength after high temperature reaches 37.7MPa, accounts for normal temperature baking
The 65% of dry compressive resistance；Or 600 DEG C, 3h is incubated, its residual strength after high temperature reaches 39.7MPa, accounts for normal temperature drying compressive resistance
68%, Linear change rate is 0.1%.
Claims (2)
1. a kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement, its characteristic is, including following heavy
Measure the component of percentage：
Heavy blast furnace slag aggregate：40-80%；Portland cement：10-20%；Slag micropowder：10-20%；Flyash：0-10%；
Fine silica powder：0-10%；Then sodium tripolyphosphate is added in above-mentioned raw materials：0.01-0.03%, sodium metaphosphate：0.01-
0.03%, wherein：By weight：Slag micropowder, flyash, fine silica powder are 2-4：1-2：0.1-1；
Preparation method is as follows：
Choose CaO content in heavy blast furnace slag aggregate and cannot be greater than 45%, critical grain size cannot be greater than 20mm, its aggregate strength-
Crush values are not more than 16%；
By above-mentioned raw materials component index on request, aggregate and Portland cement, slag micropowder, powder that heavy blast furnace slag level is matched somebody with somebody
Coal ash, the powders mixture of fine silica powder press 6-7：3-4 part by weight is well mixed, wherein the normal silicate added
Cementitious binder accounts for the 10-16% of raw material gross weight ratio, untill being sufficiently mixed uniformly, and it is volume that product physical index, which is made,
110 ± 5 DEG C of density, 24h is 2.65-2.72g/cm3, after normal temperature maintenance in 7 days, it is 42.8- that compressive resistance is dried in 110 DEG C
59MPa, 700 DEG C, is incubated 3h, its residual strength after high temperature reaches 24.8-38MPa, accounts for the 53-68% that normal temperature dries compressive resistance；Or
600 DEG C, 3h is incubated, its residual strength after high temperature reaches 27.4-40MPa, accounts for the 59-72% that normal temperature dries compressive resistance, Linear change rate
Between ± 1%.
2. a kind of heat resistance concrete that full weight slag aggregate is prepared with Portland cement according to claim 1, its
Characteristic is that slag micropowder, flyash, fine silica powder are 2.2-2.6：1-1.3：0.3-0.6.
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| CN105330239A (en) * | 2015-12-15 | 2016-02-17 | 苏州万盛混凝土有限公司 | Preparing method for heat-resisting modified concrete |
| CN106116310A (en) * | 2016-06-29 | 2016-11-16 | 中国三冶集团有限公司 | A kind of containing slag powders with the thermal insulation mortar of polypropylene fibre |
| CN106145816A (en) * | 2016-06-29 | 2016-11-23 | 中国三冶集团有限公司 | A kind of high water proof fire retardant thermal insulation mortar containing slag powders |
| CN109553343A (en) * | 2018-11-27 | 2019-04-02 | 长江大学 | A kind of refractory concrete material and preparation method thereof |
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| CN100383079C (en) * | 2005-06-13 | 2008-04-23 | 攀枝花环业冶金渣开发有限责任公司 | Whole-high valent titanium slag concrete |
| CN103159487A (en) * | 2011-12-17 | 2013-06-19 | 鞍山钢铁集团公司 | Refractory casting materials with blast furnace heavy mineral slag as main raw materials |
| CN103159449A (en) * | 2011-12-17 | 2013-06-19 | 鞍山钢铁集团公司 | Heat-resistant concrete prepared by blast furnace dry slag |
| CN103224369A (en) * | 2013-04-09 | 2013-07-31 | 四川省交通运输厅公路规划勘察设计研究院 | Anti-radiation concrete produced from slag aggregate, and production method thereof |
| CN103613345B (en) * | 2013-12-05 | 2015-12-30 | 攀枝花环业冶金渣开发有限责任公司 | C55 ~ C65 high-titanium dry slag concrete |
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