CN101475381A - Diversion trench high-strength low ablation rate castable concrete for launching rocket - Google Patents
Diversion trench high-strength low ablation rate castable concrete for launching rocket Download PDFInfo
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- CN101475381A CN101475381A CNA2008100001545A CN200810000154A CN101475381A CN 101475381 A CN101475381 A CN 101475381A CN A2008100001545 A CNA2008100001545 A CN A2008100001545A CN 200810000154 A CN200810000154 A CN 200810000154A CN 101475381 A CN101475381 A CN 101475381A
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Abstract
The invention relates to refractory concrete with high strength and low ablating rate for a guiding gutter for rocket launching, which relates to the field of building materials. The prior concrete for the guiding gutter is not suitable for the conditions of severe environment and low air temperature in a launching area, and has long coagulation time and low strength. Therefore, the refractory concrete adopts a bi-component binding agent, namely CA65 cement and cement taking aluminic acid-calcium as main mineral phases, wherein the proportions of the CA65 cement and the cement taking aluminic acid-calcium as the main mineral phases are as follows: the CA65 cement accounts for 75 to 90 percent, and cement taking aluminic acid-calcium as the main mineral phases accounts for 10 to 25 percent. The refractory concrete has the advantages of superior ablation resistance, short coagulation time, high strength, good atmospheric stability and durability, cost conservation and non-pollution.
Description
Technical field
The present invention relates to building materials field, especially refractory concrete.
Background technology
The material that is used for diversion trench in the rocket launching base, must possess and still keep ablation rate low under the high temperature and high speed airflow scouring, the characteristics that thermal shock resistance is high possess air stability, weather resistance is good simultaneously, the corrosion of ability propelling agent, and many characteristics such as can repeatedly use.In early days, USSR (Union of Soviet Socialist Republics) visit the large-scale diversion trench that gram nguktrum firing site and high thrust test district, Lu Man mountain, NASA Ai Dehua base air depot launch facility all adopt the water cooling steel plate to make, not only engineering duty is big, and poor durability, also can cause certain environmental pollution.Afterwards, diversion trench was used the concrete for making of low ablation rate instead, and CA65 is as wedding agent in the component, and the high alumina brick D504 particle of pulverizing is as aggregate, and formulated standard, and the standard of China is GJB1597-93.But because the rocket launching base is located at the higher mountain area of height above sea level more, there temperature is low, day and night temperature is big, climate variability, environment is abominable, concrete setting rate and intensity have been influenced, its intensity can only reach the level of C20, by the concrete material of original GJB1597-93 standard, exist sclerosis slowly, long construction period, construction physique amount can not get guaranteeing, can not satisfy the airflow of present rocket launching and wash away needs, must on the basis of existing low ablation rate refractory concrete, improve intensity, to satisfy actual needs.
Size grading standard in GJB 1597-93 after the intensity of CA65 cement mortar, premium high-alumina brick physical and chemical index, the pulverizing is listed in following each table.
Table 1 CA65 strength of cement mortar
Table 2 fine high alumina brick (intensity meets GB2988-87) physical and chemical index
| Index | Numerical value |
| Al 2O 3％ | 48～75 |
| Fe 2O 3％ | 1.8 |
| Refractoriness ℃ is not less than | 1750 |
| Water-intake rate is not less than | 7 |
The grain composition of the high-alumina refractory brick after table 3 is pulverized (meeting D504 requirement among the GJB 1597-93)
| |
5～10 | 2.5～5 | 2.5 below |
| Grating | 38 | 32 | 30 |
Table 4 meets the refractory concrete matching criterion of GJB 1597-93 regulations
Summary of the invention
The object of the invention can be fit to the low ablation rate refractory concrete of high-intensity rocket launching diversion trench that high and cold mountain area uses for providing a kind of.
The technical scheme that realizes above-mentioned purpose is as follows:
The D504 alumina firebrick particle 80-82% that is ground into different-grain diameter added as aggregate to contain aluminic acid-calcium be that CA is that the cement and the CA65 cement of main ore deposit phase is CA65H18-20% as bicomponent binder, premix adds water after stirring, water cement ratio is 0.65-0.90, through stirring, after castable, jolt ramming, the maintenance demoulding, 28 days ultimate compression strength of refractory concrete reach more than the 40Mpa again.
The weight percent of bicomponent binder CA65H consists of: CA65 cement 75-90% is the cement 10-25% of main ore deposit phase with CA.
The D504 alumina firebrick is pulverized back grain diameter grating: 10-5mm and is 38%, 5-2.5mm is 32%, is 30% below the 2.5mm, wherein the content of particle diameter＜0.15mm＜10%.
In the such scheme, wedding agent has increased the composition of aluminic acid-calcium as exciting agent, it has the feature that shortens time of coagulation and improve intensity, in wedding agent, play the sclerosis exciting agent, make 3 days intensity among the GJB1597-93 advance to realization in 1 day, thereby, the problem that has prevented under low temperature atrocious weather condition, to prolong time of coagulation and reduced intensity.The intensity of refractory concrete is increased substantially, reach more than the 40Mpa.
The present invention has following beneficial effect:
1, good ablation resistance.Refractory aggregate and fire-resistant wedding agent by the technique scheme manufacturing; its composition has excellent compatibility; do the time spent at the high temperature and high speed air-flow; the surface can form one deck heavy-gravity silicate melt protective layer rapidly; to alleviate the pneumatic heat effect of high velocity air, make refractory concrete avoid washing away of high temperature and high speed air-flow and ablate to concrete surface.
2, good air stability.This high-strength low ablation erosion rate refractory concrete, the diversion trench of making can need not be repaired through tens times emission.Not only have extremely low ablation rate, and have good air stability and weather resistance.
3, save construction and maintenance cost.But the diversion trench life-time service need not keep in repair at ordinary times, repeatedly uses and also needn't repair, and durable in use, construction and maintenance cost are low.
4, compliance with environmental protection requirements.Because the present invention can repeatedly use, and can not produce waste water in use, the processing cost of having eliminated sewage can not form pollution for the second time yet, meets the environmental protection policy of country fully.
Description of drawings
Fig. 1 is the technological process of production figure of rocket launching of the present invention with diversion trench high-strength low ablation erosion rate refractory concrete
Top among the figure is divided into the aggregate production process, and lower part is the production process of wedding agent, and the rear portion is divided into the process of manufacturing of high-strength low ablation erosion rate refractory concrete, and its used equipment all marks in the drawings.
The name of each sequence number is called among the figure:
1-high alumina brick raw material, 2-CA65 cement raw material, 3-CA exciting agent, 4-water, 5-crusher, 6,11,15,21,24-chapelet, 7,13,16,22-feed bin, 8,17-oscillating feeder, 9,14-twin rollers, 10-vibratory screening apparatus, 12-scraper conveyor, 18-grinding machine, 19-blower fan, 20-dust-precipitator, 23-batching, 25,26-mixing machine, 27-castable.
Embodiment
By following examples technical solution of the present invention is described further.
Proportion scale:
Aggregate: D504 high alumina brick 80%, the particle diameter＜0.15mm after the pulverizing accounts for total amount＜10%,
Wedding agent: 20%, wherein CA65 cement 80%, CA are the calcium aluminate 20% of main ore deposit phase
Wedding agent chemical ingredients and concrete physicals of the present invention such as following table:
Wedding agent chemical ingredients % (weight)
| L | S | A | F | C | M | T | ∑ effective constituent | Impurity |
| 0.50 | 4.46 | 60.9 | 1.42 | 28.32 | 0.74 | 2.96 | 99.46 | Surplus |
Physicals
Intensity 52.3MPa
Ablation rate 0.90mm/Sec
Proportion scale:
Aggregate: D504 high alumina brick 80%, the particle diameter＜0.15mm after the pulverizing accounts for total amount＜10%,
Wedding agent: 20%, wherein CA65 75%, CA are the calcium aluminate 25% of main ore deposit phase
Wedding agent chemical ingredients and concrete physicals of the present invention such as following table:
Wedding agent chemical ingredients % (weight)
| L | S | A | F | C | M | T | ∑ is effective | Impurity |
| Composition | ||||||||
| 0.50 | 4.39 | 60.24 | 1.32 | 29.02 | 0.74 | 3.06 | 99.27 | Surplus |
Physicals
Intensity 56.7MPa
Ablation rate 0.90mm/Sec
Proportion scale:
Aggregate: D504 high alumina brick 80%, the particle diameter＜0.15mm after the pulverizing accounts for total amount＜10%,
Wedding agent: 20%, wherein CA65 90%, CA are the calcium aluminate 10% of main ore deposit phase
Wedding agent chemical ingredients and concrete physicals of the present invention such as following table:
Wedding agent chemical ingredients % (weight)
| L | S | A | F | C | M | T | ∑ effective constituent | Impurity |
| 0.55 | 4.46 | 62.02 | 1.33 | 27.46 | 0.74 | 3.06 | 99.62 | Surplus |
Physicals
Intensity 42.3MPa
Ablation rate 0.95mm/Sec
Aggregate: D504 high alumina brick 80%, the particle diameter after the pulverizing＜0.1
Claims (2)
1, rocket launching diversion trench high-strength low ablation erosion rate refractory concrete, it is characterized by will be ground into different-grain diameter D504 alumina firebrick particle 80-82% as aggregate, add the cement contain aluminic acid-calcium master ore deposit phase and CA65 cement as bicomponent binder 18-20%.
2, rocket launching according to claim 1 is with diversion trench high-strength low ablation erosion rate refractory concrete, and the weight percent that it is characterized by bicomponent binder consists of: CA65 cement 75-90% is that the cement of main ore deposit phase is 10-25% with aluminic acid-calcium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100001545A CN101475381A (en) | 2008-01-04 | 2008-01-04 | Diversion trench high-strength low ablation rate castable concrete for launching rocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100001545A CN101475381A (en) | 2008-01-04 | 2008-01-04 | Diversion trench high-strength low ablation rate castable concrete for launching rocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101475381A true CN101475381A (en) | 2009-07-08 |
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|---|---|---|---|
| CNA2008100001545A Pending CN101475381A (en) | 2008-01-04 | 2008-01-04 | Diversion trench high-strength low ablation rate castable concrete for launching rocket |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760004A (en) * | 2016-12-23 | 2017-05-31 | 中国人民解放军63926部队 | A kind of construction method of the uniform joint bar in guide trough structure surface |
| CN108930332A (en) * | 2018-08-17 | 2018-12-04 | 中国人民解放军63926部队 | A kind of launching workplace " W " type diversion trench direct current section top refractory concrete protective layer construction method |
| CN109138428A (en) * | 2018-08-17 | 2019-01-04 | 中国人民解放军63926部队 | A kind of launching workplace diversion trench refractory concrete protective layer construction method |
| CN113149576A (en) * | 2021-04-21 | 2021-07-23 | 北京金隅通达耐火技术有限公司 | Mullite heat-resistant concrete for rocket diversion trench |
| CN114380580A (en) * | 2021-12-29 | 2022-04-22 | 北京金隅通达耐火技术有限公司 | Corundum heat-resistant concrete with low ablation rate and preparation method and application thereof |
| CN115108791A (en) * | 2022-06-16 | 2022-09-27 | 北京金隅通达耐火技术有限公司 | Heat-resistant concrete and preparation method and application thereof |
-
2008
- 2008-01-04 CN CNA2008100001545A patent/CN101475381A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760004A (en) * | 2016-12-23 | 2017-05-31 | 中国人民解放军63926部队 | A kind of construction method of the uniform joint bar in guide trough structure surface |
| CN108930332A (en) * | 2018-08-17 | 2018-12-04 | 中国人民解放军63926部队 | A kind of launching workplace " W " type diversion trench direct current section top refractory concrete protective layer construction method |
| CN109138428A (en) * | 2018-08-17 | 2019-01-04 | 中国人民解放军63926部队 | A kind of launching workplace diversion trench refractory concrete protective layer construction method |
| CN113149576A (en) * | 2021-04-21 | 2021-07-23 | 北京金隅通达耐火技术有限公司 | Mullite heat-resistant concrete for rocket diversion trench |
| CN114380580A (en) * | 2021-12-29 | 2022-04-22 | 北京金隅通达耐火技术有限公司 | Corundum heat-resistant concrete with low ablation rate and preparation method and application thereof |
| CN115108791A (en) * | 2022-06-16 | 2022-09-27 | 北京金隅通达耐火技术有限公司 | Heat-resistant concrete and preparation method and application thereof |
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Open date: 20090708 |