CN109970400A - Cold active absorption summer area's winter saves material and its preparation and application of cooling capacity - Google Patents
Cold active absorption summer area's winter saves material and its preparation and application of cooling capacity Download PDFInfo
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- CN109970400A CN109970400A CN201910284625.8A CN201910284625A CN109970400A CN 109970400 A CN109970400 A CN 109970400A CN 201910284625 A CN201910284625 A CN 201910284625A CN 109970400 A CN109970400 A CN 109970400A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of cold active absorption summer area's winter saves material and its preparation and application of cooling capacity, material mainly by: high-absorbent material, foaming agent, pure clay, suspending agent, coagulant and water form.Reach 4 times or more using ratio of the pure water under icing condition than the thermal coefficient of normal temperature state, it is added to hi-efficient hygroscopic agent in the material, still contain a large amount of crystallization water and Free water after the completion of ensuring to consolidate in rock-soil material in the material, thermal coefficient is maximum under the frozen state of actual measurement, under melting state, the thermal coefficient ratio of freeze thawing is up to 3.0~3.5；The intensity having after the completion of the maintenance of cement mortar Plays is added according to the proportion；The slurry material of preparation is injected into stratum in a manner of slip casing by pressure, or is prefabricated into after plate material to on-site consolidation, or inject directly on surface of stratum, frozen-heave factor is less than 4%；90% or more Frozen-thawed cycled water retention, loss of strength rate is less than 10%.It is insulated dose-effect fruit with cold shut is absorbed, durability is strong, and preparation is simple, cheap, easy construction.
Description
Technical field
The present invention relates to material and its preparation and application, especially a kind of Permafrost Area basic engineering construction that is suitable for is protected
Cold active absorption summer area's winter for protecting frozen soil saves material and its preparation and application of cooling capacity.
Background technique
(0 DEG C ~ -1.5 DEG C) area of high temperature permafrost constantly in Qinghai-Tibet Platean is carried out railway, highway, high speed by China
The construction of the Important Projects facility such as highway, petroleum pipeline, optical cable, hydraulic engineering.However it is extremely sensitive, ecological extremely crisp in temperature
Weak Qinghai-Tibet Platean, which carries out engineering construction, will face many acid tests: (volume ice content is more than for high temperature, high soil containing frost
30% ever-frozen ground), global warming and ever-frozen ground constantly degenerate, country proposes protection of permafrost to engineering construction
Basic principle, traditional construction material due to all having higher 1.1 ~ 1.3W/K.m of thermal coefficient under the conditions of positive subzero temperature, because
All there is a certain range of melting band around the summer basis on plateau in this, and the year flat temperature of entire Qinghai-Tibet Platean is lower than zero
Degree, and more than 8 monthly mean temperatures are lower than zero degree in 1 year, have natural cold energy abundant, it is main by taking Qinghai-Tibet Railway as an example at present
The engineering measure for the protection of permafrost to be used has:
(1) keep the temperature: cardinal principle prevents heat transfer, by laying insulating layer, improves roadbed height, reduces the same of heat input
When also prevent cold quantity transmission, actual measurement discovery can only play the role of that ever-frozen ground is delayed to heat up；
(2) actively cool down: utilizing cross-ventilation principle, ventilation duct is laid in roadbed, Gravel road base plays certain cooling effect
Fruit；
(3) sunshade: sunshading board avoids solar radiation, while cross-ventilation principle is utilized, significant effect, and cost is high.
(1) keep the temperature: cardinal principle prevents heat transfer, by laying insulating layer, improves roadbed height, reduces heat input
While also prevent cold quantity transmission, actual measurement discovery can only play the role of that ever-frozen ground is delayed to heat up；
(2) actively cool down: utilizing cross-ventilation principle, lay ventilation duct in roadbed, Gravel road base plays certain cooling
Effect；
(3) sunshade: sunshading board avoids solar radiation, while cross-ventilation principle is utilized, significant effect, and cost is high.
In face of China In Permafrost Region of Qinghai-tibet Plateau high temperature, unique stratum occurrence condition of Gao Hanbing, the above engineering is arranged
Apply that there is some clearly disadvantageous and defects or effect are insufficient or construction is inconvenient or cost is too high or can only
Cool down on " point ", it is difficult to the requirement for meeting " line " that requires in engineering, cooling down on " face ".
There is the summary of the invention present invention absorption cold shut to be insulated, and dose-effect fruit, environmental-friendly, durability is strong, preparation is simple, cost
Many advantages, such as cheap, easy construction (injection, injection and prefabricated), wide application.
Technical problem: it the invention aims to overcome deficiency in the prior art, provides and a kind of prepares simple, low cost
Honest and clean, easy construction, durability are strong, absorb the cold shut insulation good low cost of dose-effect fruit and environmental-friendly cold area's winter active absorption
Summer saves material and its preparation and application of cooling capacity.
Technical solution: a kind of cold active absorption summer area's winter of the invention saves the material of cooling capacity, comprising: 1. high water absorption
Material, 2. foaming agent, 3. pure clay, 4. suspending agent, 5. coagulant and 6. water；Its weight proportion is as follows:
1. 10~12 grams of high-absorbent material, 2. 20~40 grams of foamed material, 3. 180~220 grams of pure clay, 4. suspending agent 1
~10 grams, 5. 1~12 gram of coagulant, 6. 300~600 grams of water.
1. the high-absorbent material is the high-performance water absorbing agent that water-taking efficiency reaches 100~1000%: acrylamide-the third
Olefin(e) acid salt crosslinking copolymerization object, the still crystallization water and Free water containing 180~300% after which can consolidate in ground,
Long-term water conservation effect with 25 Frozen-thawed cycled (± 10 DEG C) water retentions 90% or more.
2. the foaming agent is vegetalitas cement blowing agent；3. the pure clay is kaolinite, montmorillonite or Erie
Stone；4. the suspending agent is sodium bentonite.
Using a kind of above-mentioned preparation and application of cold active absorption summer area's winter preservation cooling capacity material, including walk as follows
It is rapid:
(1) will 3. pure clay it is levigate, cross 200 meshes solid powder is made；
(2) 3. water will be added to be sufficiently stirred by pure clay powder, the mass ratio of water and pure clay is 10:2, forms slurries；
(3) 2. foaming agent and water are put into the foam being prepared into foaming machine according to the ratio of 1:20, are slurry according to foam
The ratio mixing of liquid product 10~20%, foam and slurries are mixed 30 minutes or more；
(4) 4. suspending agent and 5. coagulant is added, is sufficiently stirred again, maintenance was by 28 days or more in curing box, maintenance
Temperature are as follows: 20 ± 3 DEG C, humidity is greater than 90%, obtains the slurry material of required effect；
(5) stratum is injected in a manner of slip casing by pressure using slurry material as injecting paste material, or arrive after being prefabricated into plate material
On-site consolidation, or inject directly on surface of stratum.
2. the foaming agent and 3. 70.7mm × 70.7mm of pure clay material × 70.7mm uniaxial compressive strength is being marked
Reach 1~2MPa under quasi- curing condition, frozen-heave factor is less than 4% under the conditions of High water cut.
Beneficial effect is being freezed and is being melted by adopting the above-described technical solution, the present invention makes full use of natural conditions to be lauched
The difference of heating conduction under change state plays the work for protecting natural ever-frozen ground and underlying security using local natural cold-amount
With.The functional material that cooling capacity is saved using active absorption summer in winter is become using ice, water phase and realizes that thermal coefficient changes, it is known that
The thermal coefficient of water is 0.54W/ (m.K), and the thermal coefficient of ice is 2.22W/ (m.K), and thermal conductivity ratio is about under two states
4.0.At high porosity skeleton structure, high-absorbent material can be consolidated in the short time for pure clay and foamed material in slurry material used
A large amount of Free waters are tied, and actively fill these gaps.Slurries are injected, are sprayed or precast assembly by way of in ground
In basic internal or surface forms heat exchange controlled material layer, and thermal coefficient differences are big under positive state at negative temperature using it
Principle, the heat flow density of the regulation ground plinth soil body, achievees the purpose that cooling foundation.New material is formed by using throughout the year
Temperature change, under Permafrost Area summer positive temperature state, the majority of material internal is Free water, and material internal exists
Partially enclosed bubble, therefore thermal coefficient is smaller under positive temperature state, can play and heat is prevented to enter frozen soil (preservation frozen soil
Cooling capacity) effect；Under the conditions of winter subzero temperature, water congeals into ice for the freedom of material internal, and volume expansion is filled with totality hole
The thermal coefficient of gap, material becomes larger, and capacity of heat transmission enhancing is conducive to the incoming to ever-frozen ground of cooling capacity.Material internal simultaneously
Containing a large amount of Free waters, specific heat capacity with higher, using the Permafrost Area cold season time be greater than the warm season time the characteristics of,
Winter cold energy can be stored, the effect further to cool down is played.Learn the present invention under frozen state and melting state through experiment
Thermal coefficient, ratio reach 3.0~3.5, freeze the ratio 4.0 with the thermal coefficient under melting state very close to pure water, say
The effect of cold-storage thermal resistance of bright material, is very significant.
Its major advantage:
1. hot semiconductor effect is obvious, cooling efficiency is prominent.Material moisture content is 180~300% or more, freezing-thawing shape
Thermal conductivity ratio reaches 3.0~3.5 times before and after state；
2. easy for construction can be injected stratum, jeting surface can be with prefabricated, and cost performance is high；
3. preparation process is simple, material composition is easy to get and the cost of ordinary cement slurries is close；
4. slurry material setting rate is fast, there is certain intensity after the completion of consolidation, water conservation durability is good, can meet common work
The requirement of the journey strength of materials；
5. environmental-friendly.Such material is mainly embedded among ground by way of slip casting or laying, material itself
It will not react, therefore ecological environment not had an impact with Rock And Soil, any energy is not necessarily in the cold-storage thermal resistance course of work
Source can reach mankind's activity and naturally movable harmony.
Detailed description of the invention
Fig. 1 is Permafrost Area highway subgrade structure schematic diagram.
Fig. 2 builds up roadbed for injection and shows that construction is intended to.
Fig. 3 is that subgrade construction schematic diagram is built up in injection.
Fig. 4 is newly-built roadbed precast assembly construction schematic diagram.
In figure: 1- asphalt concrete pavement, 2- roadbed, the gutter 3-, 4- seasonally thaw layer, 5- Upper Limit of Permafrost, 6-
Ever-frozen ground, 7- new layer of material, 8- Grouting Pipe, the prefabricated new layer of material of 9-.
Specific embodiment
Cold active absorption summer area's winter of the invention saves the material of cooling capacity, mainly by: 1. high-absorbent material, 2. foam
Agent, 3. pure clay, 4. suspending agent, 5. coagulant and 6. water form；The weight proportion of material is as follows:
1. 10~12 grams of high-absorbent material, 2. 20~40 grams of foamed material, 3. 180~220 grams of pure clay, 4. suspending agent 1
~10 grams, 5. 1~12 gram of coagulant, 6. 300~600 grams of water.
The weight proportion for obtaining material is as follows:
Using Hot Disk thermal constant analyzer, 15 ± 1 DEG C of thawings of cold Qu Dongji -15 ± 1 DEG C frozen state are tested respectively
The thermal coefficient of the ratio of mud 2.0~3.0 of material under state are as follows: 1.6~1.8W/K.m, material under 15 ± 1 DEG C of melting states
The thermal coefficient of the ratio of mud 2.0~3.0 are as follows: 0.4~0.6W/K.m；The thermal coefficient ratio of different temperature condition are as follows: 3.0~
3.5 times, close to natural conditions under 4 times of pure water, there is significant cold-storage thermal resistance semiconductor effect.It is big to freeze thermal coefficient,
Summer thermal coefficient is small.
1. the high-absorbent material is the high-performance water absorbing agent that water-taking efficiency reaches 100~1000%: acrylamide-the third
Olefin(e) acid salt crosslinking copolymerization object, the still crystallization water and Free water containing 180~300% after which can consolidate in ground,
Long-term water conservation effect with 25 Frozen-thawed cycled (± 10 DEG C) water retentions 90% or more.
2. the foaming agent is vegetalitas cement blowing agent；3. the pure clay is kaolinite, montmorillonite or Erie
Stone；4. the suspending agent is sodium bentonite.
1. the high-absorbent material is the high-performance water absorbing agent that water-taking efficiency reaches 100~1000%: acrylamide-the third
Olefin(e) acid salt crosslinking copolymerization object, the still crystallization water and Free water containing 180~300% after which can consolidate in ground,
Long-term water conservation effect with 25 Frozen-thawed cycled (± 10 DEG C) water retentions 90% or more.
2. the foaming agent is vegetalitas cement blowing agent；3. the pure clay is kaolinite, montmorillonite or Erie
Stone；4. the suspending agent is sodium bentonite, it is ensured that the uniformity containing water voids and aqueous distribution of generation.
The major function of the material agrees with applying for protection of permafrost in the area engineering construction of Qinghai-Tibet high temperature permafrost area
Work principle: the winter material has the heat transfer efficiency close to pure ice, can fully absorb the natural cold energy in local winter, summer leads
The thermal efficiency significantly reduces, and heat can be prevented to be passed to protection of permafrost.Using pure water, (2.22W/K.m) ratio is normal under icing condition
The ratio of the thermal coefficient of temperature state (0.54W/K.m) reaches 4 times or more, is added to hi-efficient hygroscopic agent (water absorption rate in the material
Can achieve 100~1000%), it is ensured that in the material in rock-soil material after the completion of consolidation still containing a large amount of crystallization water and
Free water (180~300%), thermal coefficient is maximum (1.6~1.8W/K.m) under the frozen state of actual measurement, under melting state
(0.4~0.6W/K.m), the thermal coefficient ratio of freeze thawing is up to 3.0~3.5；Meanwhile according to uniaxial compressive strength: 1~2MPa,
The maintenance of cement mortar Plays is added in proportion needed for selected material；Frozen-heave factor is less than 4%；25 Frozen-thawed cycleds (± 10 DEG C)
90% or more water retention, loss of strength rate is less than 10%.
The preparation and application that cooling capacity material is saved using above-mentioned cold active absorption summer area's winter, are included the following steps:
(1) will 3. pure clay it is levigate, cross 200 meshes solid powder is made；
(2) 3. water will be added to be sufficiently stirred by pure clay powder, the mass ratio of water and pure clay is 10:2, forms slurries；
(3) 2. foaming agent and water are put into the foam being prepared into foaming machine according to the ratio of 1:20, are slurry according to foam
The ratio mixing of liquid product 10~20%, foam and slurries are mixed 30 minutes or more；2. the foamed material and 3.
The skeleton of pure clay forming material primarily serves adjusting and increases the effect of the strength of materials；
(4) 4. suspending agent and 5. coagulant is added, is sufficiently stirred again, maintenance was by 28 days or more in curing box, maintenance
Temperature are as follows: 20 ± 3 DEG C, humidity is greater than 90%, obtains the slurry material of required effect；
2. the foaming agent and 3. 70.7mm × 70.7mm of pure clay material × 70.7mm uniaxial compressive strength is being marked
Reach 1~2MPa under quasi- curing condition, frozen-heave factor belongs to weak frost heave material, meet general work less than 4% under the conditions of High water cut
Journey underlying strength and frost heave controlling index request；
(5) stratum is injected in a manner of slip casing by pressure using slurry material as injecting paste material, or arrive after being prefabricated into plate material
On-site consolidation, or inject directly on surface of stratum.
1. the high-absorbent material can absorb using the hydroscopic high-molecular resin of high-hydroscopicity and long-term holding is a large amount of
Free water, water retention reaches 100~1000%, and the water content after the completion of conserving is also in 180~300%, 25 Frozen-thawed cycleds
90% or more (± 10 DEG C) water retention illustrates that the water-retaining agent selected has effects that be retained for a long time.
The invention will be further described for embodiment in reference to the accompanying drawing:
As shown in Figure 1, the structure of Permafrost Area highway subgrade, mainly by asphalt concrete pavement 1, roadbed 2, gutter
3, seasonally thaw layer 4, ever-frozen ground 6 and Upper Limit of Permafrost 5, for being respectively described below with operation roadbed building:
Embodiment one, spray skin layer
For the highway subgrade built up, the proportion for determining material is tested first, in accordance with thermal coefficient and intensity requirement,
The good required slurries of configuration, on the roadbed side slope built up and the new layer of material 7 of 5~10cm thickness is directly sprayed in slope foot position,
In side slope and slope foot forms active cold-storage heat resistant layer, by the different-thickness of Slopes, reduces artificial condition Slopes effect
It answers, as shown in Figure 2.
Embodiment two, injection stratum
For the highway subgrade built up, the proportion for determining material is tested first, in accordance with thermal coefficient and intensity requirement,
The good required slurries of configuration, drill on the roadbed side slope built up, by the way of slip casing by pressure, will be configured using Grouting Pipe 8
Good slurries are pressed into roadbed, and it is active cold-storage heat resistant layer, it is desirable that slurry that the heat preservation for changing original roadbed, which is main heat transfer boundary condition,
Liquid thickness and density is uniform, and slurries thickness and density is avoided unevenly to generate the generation of Slopes effect, i.e. the frozen soil of tailo melts
Change and be greater than Schattenseite, as shown in Figure 3.
Embodiment three, precast assembly
For the highway subgrade created, the proportion for determining material is tested first, in accordance with thermal coefficient and intensity requirement,
The good required slurries of configuration, at the scene or the good required prefabricated new layer of material 9 of prefabrication, after standard curing, what is built up
Assembly 15~20cm thick layer in roadbed forms active cold-storage heat resistant layer, as shown in Figure 4 in roadbed.
Claims (5)
1. the material that a kind of cold active absorption summer area's winter saves cooling capacity, it is characterised in that: material includes: 1. high water absorption material
Material, 2. foaming agent, 3. pure clay, 4. suspending agent, 5. coagulant and 6. water；Its weight proportion is as follows:
1. 10~12 grams of high-absorbent material, 2. 20~40 grams of foamed material, 3. 180~220 grams of pure clay, 4. suspending agent 1~10
Gram, 5. 1~12 gram of coagulant, 6. 300~600 grams of water.
2. the material that a kind of cold active absorption summer area's winter according to claim 1 saves cooling capacity, it is characterised in that: institute
The 1. high-absorbent material stated is the high-performance water absorbing agent that water-taking efficiency reaches 100~1000%: the copolymerization of acrylamide and acrylic acid salt
Cross-linking agent, the still crystallization water and Free water containing 180~300% after which can consolidate in ground have 25 jellies
Melt the long-term water conservation effect of circulation (± 10 DEG C) water retention 90% or more.
3. the material that a kind of cold active absorption summer area's winter according to claim 1 saves cooling capacity, it is characterised in that: institute
The 2. foaming agent stated is vegetalitas cement blowing agent；3. the pure clay is kaolinite, montmorillonite or illite；It is described 4.
Suspending agent is sodium bentonite.
4. the preparation and application of cooling capacity material are saved using a kind of cold active absorption summer area's winter described in claim 1,
It is characterized in that, includes the following steps:
(1) will 3. pure clay it is levigate, cross 200 meshes solid powder is made；
(2) 3. water will be added to be sufficiently stirred by pure clay powder, the mass ratio of water and pure clay is 10:2, forms slurries；
(3) 2. foaming agent and water are put into the foam being prepared into foaming machine according to the ratio of 1:20, are slurries body according to foam
The ratio mixing of product 10~20%, foam and slurries are mixed 30 minutes or more；
(4) 4. suspending agent and 5. coagulant is added, is sufficiently stirred again, is conserved in curing box by 28 days or more, curing temperature
Are as follows: 20 ± 3 DEG C, humidity is greater than 90%, obtains the slurry material of required effect；
(5) stratum is injected in a manner of slip casing by pressure using slurry material as injecting paste material, or arrive scene after being prefabricated into plate material
Assembly, or inject directly on surface of stratum.
5. a kind of cold active absorption summer area's winter according to claim 4 saves the preparation method of cooling capacity material, special
Sign is: the 2. foaming agent and 3. 70.7mm × 70.7mm of pure clay material × 70.7mm uniaxial compressive strength are supported in standard
Reach 1~2MPa under guard strip part, frozen-heave factor is less than 4% under the conditions of High water cut.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777737A (en) * | 2019-10-16 | 2020-02-11 | 天津大学 | Anti-freezing core wall phase change clay for winter construction process and construction method thereof |
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| SU643592A1 (en) * | 1977-08-30 | 1979-01-25 | Ленинградский зональный научно-исследовательский и проектный институт типового и экспериментального проектирования жилых и общественных зданий | Base of structures and buildings erected on ever-frozen soil |
| CN102718457A (en) * | 2012-07-09 | 2012-10-10 | 中国矿业大学 | Slurry material with cold accumulation and heat resistance function and high water content |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU643592A1 (en) * | 1977-08-30 | 1979-01-25 | Ленинградский зональный научно-исследовательский и проектный институт типового и экспериментального проектирования жилых и общественных зданий | Base of structures and buildings erected on ever-frozen soil |
| CN102718457A (en) * | 2012-07-09 | 2012-10-10 | 中国矿业大学 | Slurry material with cold accumulation and heat resistance function and high water content |
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| 李茂芳，孙钊: "《大坝基础灌浆》", 30 June 1987, 水利电力出版社 * |
| 石发恩，蒋达华，任如山，费华，赵运超: "《能源与利用》", 31 July 2014, 江西高校出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110777737A (en) * | 2019-10-16 | 2020-02-11 | 天津大学 | Anti-freezing core wall phase change clay for winter construction process and construction method thereof |
| CN110777737B (en) * | 2019-10-16 | 2021-08-27 | 天津大学 | Anti-freezing core wall phase change clay for winter construction process and construction method thereof |
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