CN105218048A - First sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof - Google Patents
First sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof Download PDFInfo
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- CN105218048A CN105218048A CN201510604950.XA CN201510604950A CN105218048A CN 105218048 A CN105218048 A CN 105218048A CN 201510604950 A CN201510604950 A CN 201510604950A CN 105218048 A CN105218048 A CN 105218048A
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Abstract
The invention discloses the first sprayed concrete of a kind of High-geotemperature tunnel high-performance, it is characterized in that, by 1m
3the contained raw material of meter and consumption are: cement 300 ~ 400kg, fine sand 400 ~ 500kg, heavy blast furnace slag 700 ~ 800kg, flyash 60 ~ 100kg, bauxite clinker 40 ~ 80kg, basalt fibre 20 ~ 40kg, high performance water reducing agent of polyocarboxy acid 3 ~ 5kg, aluminate accelerating chemicals 10 ~ 15kg, water 180 ~ 250kg.Its preparation method, comprises the following steps: get the raw materials ready; Mix and blend; Add coarse aggregate; Add aluminate accelerating chemicals and spray and build.The present invention's advantage is compared with prior art: High-geotemperature tunnel support sprayed concrete provided by the invention, combines closely, make country rock entirety reach stable with country rock, can continue next step construction by shotcrete layer again simultaneously.Under High-geotemperature tunnel environment, setting rate is fast, has good resistance toheat, and intensity can not reduce simultaneously, and this kind of concrete has good impervious, crack resistence performance, can reach construction requirement.
Description
Technical field
The present invention relates to building material field, particularly relate to first sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof.
Background technology
Present stage, along with the fast development of the civil construction project of China, especially constantly the carrying out of the heavy construction such as highway, railway, a lot of heavy construction will be passed through mountain area and be built deep-lying long tunnels engineering, and the tunnel environment of the high heat of high temperature is modal execution conditions in construction process, this is also for construction brings certain difficulty.
In high temperature height thermally section, the initial temperature of country rock is very high, and this also makes the concrete of injection be in high temperature high thermal environment.In high temperature environments, the thermal conductivity of common sprayed concrete is too large, easily produces dehydration and accelerates, and insufficient concrete strength and the viscosity of causing of hydrated cementitious declines.
An important requirement of High-geotemperature constructing tunnel is exactly rapid construction, and such normal concrete is difficult to the effect reaching rapid hardening at all, is also difficult to reach requirement even if add general accelerating chemicals, also may can produce the disadvantageous effect of burn into strength degradation.
Summary of the invention
The present invention is to solve above-mentioned deficiency, provides first sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof.
Above-mentioned purpose of the present invention is realized by following technical scheme: the first sprayed concrete of a kind of High-geotemperature tunnel high-performance, is characterized in that: by 1m
3the contained raw material of meter and consumption are: cement 300 ~ 400kg, fine sand 400 ~ 500kg, heavy blast furnace slag 700 ~ 800kg, flyash 60 ~ 100kg, bauxite clinker 40 ~ 80kg, basalt fibre 20 ~ 40kg, high performance water reducing agent of polyocarboxy acid 3 ~ 5kg, aluminate accelerating chemicals 10 ~ 15kg, water 180 ~ 250kg.
Described cement is Portland blast furnace slag cement, and model is PSA32.5.
Described flyash adopts II grade of flyash, can make gelling material by Substitute For Partial ordinary Portland cement, improve the workability of concrete mix, reduce concrete contraction and cracking, reduce the hydration heat in concrete pouring, the later strength of compensating concrete well, and pass through Al
2o
3, SO
3the control of content makes its more suitable High-geotemperature environment.
The present invention selects heavy blast furnace slag to be also the tunnel environment fully taking into account High-geotemperature as coarse aggregate, and respectively to the Al contained by it
2o
3reaching with the control of CaO amount more can the requirement of high temperature resistant, moisture-proof.Heavy blast furnace slag substitutes rubble as coarse aggregate, also more environmental protection, economy.
Described basalt fibre is a kind of resistant to elevated temperatures additive, can improve concrete intensity after interpolation, so also can improve its intensity by both having improved concrete resistance to elevated temperatures to the control of basalt fibre amount.
Described high performance water reducing agent of polyocarboxy acid volume is low, water-reducing rate is high, it is little to shrink, and increases substantially concrete early stage, later strength, particularly when chloride ion content is low, alkali content is low, is conducive to concrete weather resistance.
Described aluminate accelerating chemicals is best suited for the Hardenfast of high temp tunnel environment, and we can select sodium aluminate accelerating chemicals to consider economic factor at this.
A preparation method for the first sprayed concrete of High-geotemperature tunnel high-performance, comprises the following steps:
(1) get the raw materials ready: get out starting material, and check all raw-material quality whether to reach requirement;
(2) mix and blend: slag cement, fine sand, II grade of flyash, bauxite clinker, basalt fibre, high performance water reducing agent of polyocarboxy acid are mixed forced mixer and stir, and at the uniform velocity stir 2min, adding water while stirring stirs;
(3) coarse aggregate is added: mix in stirrer using the heavy blast furnace slag as coarse aggregate, at the uniform velocity stir 2.5min;
(4) add aluminate accelerating chemicals and spray and build: by pressurized air during obtained concrete loading spraying machine, add aluminate accelerating chemicals simultaneously, then carry out injection and build and maintenance.
The present invention's advantage is compared with prior art: High-geotemperature tunnel support sprayed concrete provided by the invention, combines closely, make country rock entirety reach stable with country rock, can continue next step construction by shotcrete layer again simultaneously.Under High-geotemperature tunnel environment, setting rate is fast, has good resistance toheat, and intensity can not reduce simultaneously, and this kind of concrete has good impervious, crack resistence performance, can reach construction requirement.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
The first sprayed concrete of a kind of High-geotemperature tunnel high-performance, by 1m
3meter, contained raw material and consumption are: cement 360kg, water 200kg, fine sand 450kg, heavy blast furnace slag 748kg, II grade of flyash 80kg, bauxite clinker 50kg, basalt fibre 30kg, high performance water reducing agent of polyocarboxy acid 4kg, aluminate accelerating chemicals 12kg.
A preparation method for the first sprayed concrete of High-geotemperature tunnel high-performance, comprises the following steps:
(1) get the raw materials ready: prepare starting material, and check all raw-material quality whether to reach requirement;
(2) mix and blend: slag cement, heavy blast furnace slag, II grade of flyash, bauxite clinker, basalt fibre, high performance water reducing agent of polyocarboxy acid are mixed forced mixer and stir, and at the uniform velocity stir 2min, adding water while stirring stirs.
(3) coarse aggregate is added: mixed by coarse aggregate in stirrer, at the uniform velocity stir 2.5min;
(4) add aluminate accelerating chemicals and spray and build: pressurized air during obtained concrete loading spraying machine is added aluminate accelerating chemicals simultaneously, then carries out injection and build and maintenance.
Experiment shows that clay brick and heavy blast furnace slag aggregate have good resistance toheat, then after adding flyash, bauxite clinker, thermal conductivity ratio normal concrete reduces over half, and the interpolation of basalt fibre simultaneously makes its high temperature resistance more significantly improve.Can improve concrete early stage and later strength after adding high performance water reducing agent of polyocarboxy acid 4kg, intensity can reach 30.8MPa after tested.By observing, its impermeability and cohesiveness also improve a lot.After particularly High-geotemperature environment sprayed concrete adds sodium aluminate accelerating chemicals, setting time significantly reduces, and other salient features is also without obviously reducing.
Embodiment 2
The first sprayed concrete of a kind of High-geotemperature tunnel high-performance, by 1m
3meter, contained raw material and consumption are: cement 300kg, water 170kg, fine sand 500kg, heavy blast furnace slag 800kg, II grade of flyash 80kg, bauxite clinker 50kg, basalt fibre 20kg, high performance water reducing agent of polyocarboxy acid 3kg, aluminate accelerating chemicals 10kg.
A preparation method for the first sprayed concrete of High-geotemperature tunnel high-performance, comprises the following steps:
(1) get the raw materials ready: prepare starting material, and check all raw-material quality whether to reach requirement;
(2) mix and blend: slag cement, heavy blast furnace slag, II grade of flyash, bauxite clinker, basalt fibre, high performance water reducing agent of polyocarboxy acid are mixed forced mixer and stir, and at the uniform velocity stir 2min, adding water while stirring stirs.
(3) coarse aggregate is added: mixed by coarse aggregate in stirrer, at the uniform velocity stir 2.5min;
(4) add aluminate accelerating chemicals and spray and build: pressurized air during obtained concrete loading spraying machine is added aluminate accelerating chemicals simultaneously, then carries out injection and build and maintenance.
Embodiment 3
The first sprayed concrete of a kind of High-geotemperature tunnel high-performance, by 1m
3meter, contained raw material and consumption are: cement 400kg, water 200kg, fine sand 400kg, heavy blast furnace slag 700kg, II grade of flyash 60kg, bauxite clinker 40kg, basalt fibre 40kg, high performance water reducing agent of polyocarboxy acid 5kg, aluminate accelerating chemicals 15kg.
A preparation method for the first sprayed concrete of High-geotemperature tunnel high-performance, comprises the following steps:
(1) get the raw materials ready: prepare starting material, and check all raw-material quality whether to reach requirement;
(2) mix and blend: slag cement, heavy blast furnace slag, II grade of flyash, bauxite clinker, basalt fibre, high performance water reducing agent of polyocarboxy acid are mixed forced mixer and stir, and at the uniform velocity stir 2min, adding water while stirring stirs.
(3) coarse aggregate is added: mixed by coarse aggregate in stirrer, at the uniform velocity stir 2.5min;
(4) pressurized air during obtained concrete loading spraying machine is added aluminate accelerating chemicals simultaneously, then carry out injection and build and maintenance.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and embodiment content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. the first sprayed concrete of High-geotemperature tunnel high-performance, is characterized in that: by 1m
3the contained raw material of meter and consumption are: cement 300 ~ 400kg, fine sand 400 ~ 500kg, heavy blast furnace slag 700 ~ 800kg, flyash 60 ~ 100kg, bauxite clinker 40 ~ 80kg, basalt fibre 20 ~ 40kg, high performance water reducing agent of polyocarboxy acid 3 ~ 5kg, aluminate accelerating chemicals 10 ~ 15kg, water 180 ~ 250kg.
2. the first sprayed concrete of a kind of High-geotemperature tunnel high-performance according to claim 1, is characterized in that: described cement is Portland blast furnace slag cement.
3. the first sprayed concrete of a kind of High-geotemperature tunnel high-performance according to claim 1, is characterized in that: described flyash adopts II grade of flyash.
4. a preparation method for the first sprayed concrete of High-geotemperature tunnel high-performance, is characterized in that: comprise the following steps:
(1) get the raw materials ready: get out starting material, and check all raw-material quality whether to reach requirement;
(2) mix and blend: slag cement, fine sand, II grade of flyash, bauxite clinker, basalt fibre, high performance water reducing agent of polyocarboxy acid are mixed forced mixer and stir, and at the uniform velocity stir 2min, adding water while stirring stirs;
(3) coarse aggregate is added: mix in stirrer using the heavy blast furnace slag as coarse aggregate, at the uniform velocity stir 2.5min;
(4) add aluminate accelerating chemicals and spray and build: by pressurized air during obtained concrete loading spraying machine, add aluminate accelerating chemicals simultaneously, then carry out injection and build and maintenance.
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| CN201510604950.XA CN105218048A (en) | 2015-09-18 | 2015-09-18 | First sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof |
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| CN201510604950.XA CN105218048A (en) | 2015-09-18 | 2015-09-18 | First sprayed concrete of a kind of High-geotemperature tunnel high-performance and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477987A (en) * | 2016-09-29 | 2017-03-08 | 甘肃凯帝兰建材有限公司 | Novel injection concrete |
| CN109437736A (en) * | 2018-11-23 | 2019-03-08 | 中交第三航务工程局有限公司南京分公司 | A kind of Machine-made Sand fibrous shotcrete and its construction technology for being served as a contrast at the beginning of tunnel |
| CN110590258A (en) * | 2019-09-25 | 2019-12-20 | 贵州省公路工程集团有限公司 | Tunnel sprayed concrete and preparation method thereof |
| CN110734261A (en) * | 2019-10-31 | 2020-01-31 | 中建材料技术研究成都有限公司 | high-toughness cement-based composite material for injection and preparation method thereof |
| CN111205045A (en) * | 2020-01-13 | 2020-05-29 | 西南交通大学 | Special sprayed concrete material for tunnel high-ground-temperature dry-heat environment |
| CN113754352A (en) * | 2021-09-09 | 2021-12-07 | 上海涂固安高科技有限公司 | Production process of tunnel shotcrete |
| CN114085055A (en) * | 2021-10-25 | 2022-02-25 | 中南大学 | Secondary lining concrete suitable for high-ground-temperature tunnel in high-temperature low-humidity environment and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001302314A (en) * | 2000-04-21 | 2001-10-31 | Toyobo Co Ltd | High-toughness, fiber-reinforced concrete and its production process |
| CN102718443A (en) * | 2012-06-11 | 2012-10-10 | 西南交通大学 | Ceramsite dual-doped shotcrete for high-temperature tunnel rock surfaces |
| CN102976692A (en) * | 2012-12-04 | 2013-03-20 | 武汉大学 | Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof |
| CN103153907A (en) * | 2010-11-30 | 2013-06-12 | 建筑研究和技术有限公司 | Cement hydrate products for sprayed concrete |
-
2015
- 2015-09-18 CN CN201510604950.XA patent/CN105218048A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001302314A (en) * | 2000-04-21 | 2001-10-31 | Toyobo Co Ltd | High-toughness, fiber-reinforced concrete and its production process |
| CN103153907A (en) * | 2010-11-30 | 2013-06-12 | 建筑研究和技术有限公司 | Cement hydrate products for sprayed concrete |
| CN102718443A (en) * | 2012-06-11 | 2012-10-10 | 西南交通大学 | Ceramsite dual-doped shotcrete for high-temperature tunnel rock surfaces |
| CN102976692A (en) * | 2012-12-04 | 2013-03-20 | 武汉大学 | Ore-powder-doped high-performance shotcrete applicable to underground watertight oil cellars and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 李向辉等: "《高地温隧洞对喷射混凝土性能影响的研究》", 《河北工程大学学报（自然科学版）》 * |
| 李国强等: "《面向未来的土木工程-第三届全国高校土木工程专业大学生论坛》", 30 April 2015 * |
| 李桂林等: "《混凝土与钢筋混凝土施工手册》", 31 July 1988 * |
| 钟放平等: "《长湘高速公路施工质量与安全管理控制》", 31 July 2014 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477987A (en) * | 2016-09-29 | 2017-03-08 | 甘肃凯帝兰建材有限公司 | Novel injection concrete |
| CN109437736A (en) * | 2018-11-23 | 2019-03-08 | 中交第三航务工程局有限公司南京分公司 | A kind of Machine-made Sand fibrous shotcrete and its construction technology for being served as a contrast at the beginning of tunnel |
| CN110590258A (en) * | 2019-09-25 | 2019-12-20 | 贵州省公路工程集团有限公司 | Tunnel sprayed concrete and preparation method thereof |
| CN110734261A (en) * | 2019-10-31 | 2020-01-31 | 中建材料技术研究成都有限公司 | high-toughness cement-based composite material for injection and preparation method thereof |
| CN111205045A (en) * | 2020-01-13 | 2020-05-29 | 西南交通大学 | Special sprayed concrete material for tunnel high-ground-temperature dry-heat environment |
| CN111205045B (en) * | 2020-01-13 | 2021-03-09 | 西南交通大学 | Special sprayed concrete material for tunnel high-ground-temperature dry-heat environment |
| CN113754352A (en) * | 2021-09-09 | 2021-12-07 | 上海涂固安高科技有限公司 | Production process of tunnel shotcrete |
| CN114085055A (en) * | 2021-10-25 | 2022-02-25 | 中南大学 | Secondary lining concrete suitable for high-ground-temperature tunnel in high-temperature low-humidity environment and preparation method thereof |
| CN114085055B (en) * | 2021-10-25 | 2022-11-04 | 中南大学 | Secondary lining concrete suitable for high-ground-temperature tunnel in high-temperature and low-humidity environment and preparation method thereof |
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Application publication date: 20160106 |