CN104355578B - By precenting chlorate corrosion mortar and the preparation method of the preparation of waste and old lorry brake shoe friction material - Google Patents
By precenting chlorate corrosion mortar and the preparation method of the preparation of waste and old lorry brake shoe friction material Download PDFInfo
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- CN104355578B CN104355578B CN201410586138.4A CN201410586138A CN104355578B CN 104355578 B CN104355578 B CN 104355578B CN 201410586138 A CN201410586138 A CN 201410586138A CN 104355578 B CN104355578 B CN 104355578B
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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 invention discloses a kind of precenting chlorate corrosion mortar with the preparation of waste and old lorry brake shoe friction material, relate to building material technical field, comprise water, cement and gather materials, each weight ratio of constituents is: water: cement: gather materials=0.37:1.0:0.98, gather materials the waste and old lorry brake shoe friction material and sand that comprise and being obtained by anaerobic thermal-cracking method, and wherein waste and old lorry brake shoe friction material accounts for the weight ratio of gathering materials is 5% ~ 15%; Also disclose the preparation process of this precenting chlorate corrosion mortar: first pour waste and old lorry brake shoe friction material and sand into mortar mixer, uniform stirring 3min; Pour cement into uniform stirring 3min again; Finally slowly water is added first low rate mixing 1min, then rapid stirring 2min, obtain precenting chlorate corrosion mortar.By adding waste and old lorry brake shoe friction material in gathering materials, the pore structure of mortar being optimized, improving the performance of mortar strength and precenting chlorate corrosion aspect, improve the service life of structural concrete.
Description
Technical field
The present invention relates to building material technical field.
Background technology
Chloride erosion, sulphate attack carbonization and freeze-thaw damage are the principal elements causing skeleton construction deterioration.Chlorion arrives concrete by concrete cover---and reinforcing bar interface also accumulates gradually, forms galvanic cell, reinforcing bar is corroded under appropriate condition, and reinforcement corrosion is expanded, and Area Of Steel reduction and the cohesive force between reinforcing bar and concrete decline.Typical Steel Concrete deterioration mainly comprises mortar and concrete cracking, peels off and reinforcement corrosion.In marine structure concrete, reinforcing bar because of the erosion of chlorion comparatively typical, at present adopt is reduced water-cement ratio, is added air entrapment agent and Adding Mineral Admixtures more, and the method as flyash, slag and silicon ash improves mortar, concrete chloride resisting properties.
At present, vehicle with brake shoe (brake facing) with iron service wagon 700,000 calculating (each car 8 shoe brake watt), the discarded brake shoe quantity of annual replacing about 4,000,000 pieces, weight reaches 5000 tons, if consider the brake lining that road traffic vehicle, agri-vehicle, industrial and mineral machinery etc. uses, waste amount is huge, processes badly also can cause environmental pollution.The steel backing obtained after these discarded brake shoes carry out split and brake shoe friction material all can recyclings, if be used by waste to produce huge society and economic benefit.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can the performance of the anti-villaumite of reinforced cement mortar and the service life of sand-cement slurry, improve precenting chlorate corrosion mortar with the preparation of waste and old lorry brake shoe friction material of waste and old brake shoe recycling rate and preparation method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
With a precenting chlorate corrosion mortar for waste and old lorry brake shoe friction material preparation, composition comprises water, cement and gathers materials, described in gather materials and comprise the waste and old lorry brake shoe obtained by anaerobic thermal-cracking method and to rub material and sand, the weight ratio of each composition is as follows:
Water: cement: gather materials=0.37:1.0:0.98.
Preferably, described waste and old lorry brake shoe friction material accounts for the weight ratio of gathering materials is 5% ~ 15%.
Present invention also offers the preparation method of the precenting chlorate corrosion mortar of above-mentioned waste and old lorry brake shoe friction material preparation, concrete steps are as follows:
(1) get the raw materials ready: each raw material is prepared for subsequent use in proportion;
(2) stir:
1) by waste and old lorry brake shoe friction material and the mixing of sand hand-mixing, pour mortar mixer into after mixing, start agitator, uniform stirring 3min;
2) pour cement into agitator, start agitator, uniform stirring 3min;
3) slowly water is added agitator, first low rate mixing 1min, then rapid stirring 2min, obtain precenting chlorate corrosion mortar.
Adopt the beneficial effect that produces of technique scheme to be: adopt waste and old lorry brake shoe rub material and sand as requested ratio form and gather materials, proportionally mortar is prepared again with hydrated cementitious, instead of the component of sand-cement slurry, the pore structure of mortar is optimized, the performance of the anti-villaumite of reinforced cement mortar and the service life of sand-cement slurry is reached by Optimization technique, achieve the recycling of waste and old lorry brake shoe friction material, reach utilization of waste material and improve the object that sand-cement slurry weather resistance and mechanical property aspect promote, break through adulterant in the past and adopt flyash, the restriction of slag and silicon ash etc., for the lifting solving environmental pollution and material property, there is important society and economic benefit.
Accompanying drawing explanation
Fig. 1 is the impact of FRMWBS Replacement rate on F salt;
Fig. 2 is the impact of FRMWBS Replacement rate on mortar pore structure;
Fig. 3 is the impact of FRMWBS Replacement rate on mortar chloride resisting properties;
In figure: FRMWBS is the English of waste and old lorry brake shoe friction material: the abbreviation of FrictionRecycledMaterialofWasteBrakeShoes, FRMWBS Replacement rate refers to FRMWBS and replaces ratio after part sand in gathering materials.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.Be illustrated for the high abrasion brake block meeting " the rail freight composite brake shoe of People's Republic of China (PRC) railroad industry standard TB/T2403-2010 " standard below.
With a precenting chlorate corrosion mortar for waste and old lorry brake shoe friction material preparation, composition comprises water, cement and gathers materials, described in gather materials and comprise the waste and old lorry brake shoe obtained by anaerobic thermal-cracking method and to rub material and sand, the weight ratio of each composition is as follows:
Water: cement: gather materials=0.37:1.0:0.98.
Wherein, described waste and old lorry brake shoe friction material accounts for the weight ratio of gathering materials is 5% ~ 15%.
The present invention also provides the preparation method of above-mentioned precenting chlorate corrosion mortar, and concrete steps are as follows:
(1) get the raw materials ready: each raw material is prepared for subsequent use in proportion;
(2) stir:
1) by waste and old lorry brake shoe friction material and the mixing of sand hand-mixing, pour mortar mixer into after mixing, start agitator, uniform stirring 3min;
2) pour cement into agitator, start agitator, uniform stirring 3min;
3) slowly water is added agitator, first low rate mixing 1min, then rapid stirring 2min, obtain precenting chlorate corrosion mortar.
Utilize the mortar that is stirred to prepare test specimen, the mortar be stirred poured in concrete three joint-trial mould, carry out vibrating, floating operation; Test piece maintenance: will vibrate complete test specimen under room temperature environment, covered with plastic film, form removal after rest 24h, 24h, puts test specimen into standard curing room, carries out maintenance in 28 days; Performance test: the waste and old lorry brake shoe friction material samples by the normal curing standard test specimen of 28 days and admixture different content is carried out fundamental property test, comprises the test of folding strength, ultimate compression strength, precenting chlorate corrosion performance.
For the mortar of water cement ratio 0.37, according to above-mentioned preparation technology, the mortar specimen of maintenance to 28 day is taken out from curing room, tests the resistance to compression of mortar specimen, folding strength and chloride resisting properties thereof respectively.
Fig. 1 is the impact that the friction of waste and old lorry brake shoe expects on mortar hydrated product and chlorion reaction product F salt, the difference of F salt amount, material impact is had to the performance of mortar precenting chlorate corrosion, it is generally acknowledged that F salt is more, free chloride ion to mortar internal divergence is fewer, lower to the possibility of steel bar corrosion.
Fig. 2 is the impact of waste and old lorry brake shoe friction material on mortar pore structure, and the interpolation of waste and old lorry brake shoe friction material makes the pore structure of mortar be optimized, and intensity and the precenting chlorate corrosion performance of mortar are also better.
In table one, table two: Replacementrate: Replacement rate; Compressivestrength: ultimate compression strength; Meanvalue: mean value; Flexuralstrength: folding strength
Table 1 mortar 28d folding strength (MPa)
Table 2 mortar 28d ultimate compression strength (MPa)
As can be seen from table one and table two, along with the increase of waste and old lorry brake shoe friction material to the sand amount of substituting, the folding strength of mortar specimen and ultimate compression strength all have raising in various degree.As can be seen from Figure 3, the data of length axis are chloride diffusion coefficients, and numerical value is larger, show that the performance of mortar precenting chlorate corrosion is poorer.Along with the increase to the sand amount of substituting of waste and old lorry brake shoe friction material, the precenting chlorate corrosion performance of mortar is significantly improved, and shows as the spread coefficient of chlorion in mortar and significantly declines.
In Fig. 3: first data 2.79 × 10
-12m
2the chloride diffusion coefficient of/s is FRMWBS Replacement rate when being 0% sample, 0.530 × 10
-12m
2/ s, 0.434 × 10
-12m
2/ s and 0.392 × 10
-12m
2/ s is respectively the chloride diffusion coefficient of sample when FRMWBS Replacement rate is 5%, 10% and 15%.FRMWBS content is by 5% to 15%, and the mortar specimen of chlorion transmission coefficient more non-admixture FRMWBS respectively reduces 80.37%, 84.44% and 85.93%, and computation process is as follows:
Composition graphs 1, Fig. 2 can think again, adding of waste and old lorry brake shoe friction material, optimize the pore structure of mortar and the increase of F salt growing amount, enhance the performance of the anti-villaumite of sand-cement slurry.
Claims (3)
1. the precenting chlorate corrosion mortar with the preparation of waste and old lorry brake shoe friction material, composition comprises water, cement and gathers materials, it is characterized in that: described in gather materials and comprise the waste and old lorry brake shoe obtained by anaerobic thermal-cracking method and to rub material and sand, the weight ratio of each composition is as follows:
Water: cement: gather materials=0.37:1.0:0.98.
2. the precenting chlorate corrosion mortar with the preparation of waste and old lorry brake shoe friction material according to claim 1, is characterized in that: it is 5% ~ 15% that described waste and old lorry brake shoe friction material accounts for the weight ratio of gathering materials.
3., as claimed in claim 1 by the preparation method of the precenting chlorate corrosion mortar of waste and old lorry brake shoe friction material preparation, concrete steps are as follows:
(1) get the raw materials ready: each raw material is prepared for subsequent use in proportion;
(2) stir:
1) by waste and old lorry brake shoe friction material and the mixing of sand hand-mixing, pour mortar mixer into after mixing, start agitator, uniform stirring 3min;
2) pour cement into agitator, start agitator, uniform stirring 3min;
3) slowly water is added agitator, first low rate mixing 1min, then rapid stirring 2min, obtain precenting chlorate corrosion mortar.
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| CN201410586138.4A CN104355578B (en) | 2014-10-28 | 2014-10-28 | By precenting chlorate corrosion mortar and the preparation method of the preparation of waste and old lorry brake shoe friction material |
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| CN104355578B true CN104355578B (en) | 2016-02-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269935A (en) * | 2008-04-29 | 2008-09-24 | 水利部交通部电力工业部南京水利科学研究院 | Conduit pipe joint sealing perfusion mortar and manufacturing method thereof |
| CN101831273A (en) * | 2010-05-14 | 2010-09-15 | 唐山市丰南区国荣基管业有限公司 | Ceramic-based friction material and method for preparing same |
| CN102531438A (en) * | 2012-03-02 | 2012-07-04 | 东南大学 | Alkali-activated slag mortar |
| CN103880456A (en) * | 2013-04-19 | 2014-06-25 | 黄曦 | Ceramic based friction material and preparation method thereof |
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2014
- 2014-10-28 CN CN201410586138.4A patent/CN104355578B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269935A (en) * | 2008-04-29 | 2008-09-24 | 水利部交通部电力工业部南京水利科学研究院 | Conduit pipe joint sealing perfusion mortar and manufacturing method thereof |
| CN101831273A (en) * | 2010-05-14 | 2010-09-15 | 唐山市丰南区国荣基管业有限公司 | Ceramic-based friction material and method for preparing same |
| CN102531438A (en) * | 2012-03-02 | 2012-07-04 | 东南大学 | Alkali-activated slag mortar |
| CN103880456A (en) * | 2013-04-19 | 2014-06-25 | 黄曦 | Ceramic based friction material and preparation method thereof |
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