CN104230251A - Mass concrete in winter as well as preparation method and construction method of mass concrete - Google Patents
Mass concrete in winter as well as preparation method and construction method of mass concrete Download PDFInfo
- Publication number
- CN104230251A CN104230251A CN201410356644.4A CN201410356644A CN104230251A CN 104230251 A CN104230251 A CN 104230251A CN 201410356644 A CN201410356644 A CN 201410356644A CN 104230251 A CN104230251 A CN 104230251A
- Authority
- CN
- China
- Prior art keywords
- concrete
- teletostage
- mass concrete
- sand
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a construction method of mass concrete in winter. After preparing, pumping and pouring of mass concrete in winter, thermal insulation coverage and maintenance are finished by using plastic cloth and a plurality of layers of flame retardant heat preservation quilts and blankets, wherein each cubic meter of mass concrete in winter comprises the following components by weight: 309kg-321kg of ordinary silicate cement, 1002kg-1062kg of cobble, 752kg-798kg of sand, 172kg-180kg of water, 117.5kg-122.5g of an admixture and 16kg-20.4kg of an additive. The preparation method comprises the following steps: firstly, pouring all cobble and sand in the matching ratio and 70% of water into a stirrer, and stirring for 13-17 seconds, so as to wet the cobble and the sand; then pouring all ordinary silicate cement, admixture and additive, making a shell, and stirring for 27-33 seconds; and adding residual 30% of water, pasting and stirring for 55-65 seconds.
Description
Technical field
The present invention relates to proportioning of a kind of teletostage mass concrete and preparation method thereof and constructional method.
Background technology
According to the regulation of existing national standards " code for thermal design of civil buildings " GB50176, cold district is generally called to the north of the Yellow River in China, and in the whole year, daily mean temperature is about 100 days lower than the number of days of 5 DEG C; And daily mean temperature is equal to or less than 5 DEG C in continuous 5 days namely belongs to winter construction.Therefore cold district winter construction is often inevitable, and winter construction must take scientific and reasonable constructional method, produce volumetric expansion after avoiding concrete to endure cold, stop hydration, significantly reduce strength grade and seepage-resistant grade, thus guarantee construction quality, the particularly construction of teletostage mass concrete.
Gordian technique due to winter construction of concrete guarantees that it allows the critical strength of enduring cold in early days, namely frost-resistant concrete requires early strong, and be prevent teletostage mass concrete in condensing process because hydration heat causes larger thermal stress, concrete surface is caused to occur crack, require mass concrete slow setting, namely the early strength of mass concrete should be low unsuitable high, and need the hydration heat degree reducing cement in mass concrete.The method of existing this technical problem of solution adopts brooder method, the canvas canopy of the peripheral thick cotton felt core of tube and couple scaffold is placed in by large volume concrete structural, inside arranges air in the heating such as scatterer or stove canopy, builds and maintenance under making mass concrete be in positive temperature.This brooder method adopts proportioning and the preparation method of the mass concrete under normal temps, and required for brooder method costly, be dispensed to every cubic meter of concrete and be about 66.62 yuan, occupy most in the construction cost of teletostage mass concrete, and build and remove brooder and also need to spend many artificial, urgently improve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of rate of set teletostage mass concrete comparatively slowly.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of teletostage mass concrete, in this concrete mix of every cubic metre, each component doses is common silicate cement 309kg ~ 321kg, stone 1002kg ~ 1062kg, sand 752kg ~ 798kg, water 172kg ~ 180kg, adulterant 117.5kg ~ 122.5kg and additive 16kg ~ 20.4kg.
As preferably, described adulterant is made up of flyash and HEA swelling agent, and the use doses of every cubic metre is flyash 83.5kg ~ 88.5kg, HEA swelling agent 34kg.Being used for supplementing and reducing the volumetric shrinkage brought due to common silicate cement consumption by HEA swelling agent.
As preferably, described additive is glycol concrete compound antifreezer or YNF-9B poly carboxylic acid frostproofer.
Compared with prior art, the advantage of this teletostage mass concrete reduces water-cement ratio by the consumption reducing fusion water, reduce the consumption of common silicate cement by adding adulterant simultaneously, thus while the hydration heat reducing teletostage mass concrete, reduce the rate of set of teletostage mass concrete, reach slow setting object, prevent the surface of teletostage mass concrete from occurring crack.
Another technical problem to be solved by this invention is to provide one, and to prepare above-mentioned early strength low, and the method for rate of set teletostage mass concrete comparatively slowly.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of preparation method of teletostage mass concrete, specifically comprise the following steps, first pour in stirrer stones whole in proportioning, sand and 70% water, stir within 13 ~ 17 seconds, make stone and sand moistening; Then pour common silicate cements whole in proportioning, flyash and HEA swelling agent into, and glycol concrete compound antifreezer or YNF-9B poly carboxylic acid frostproofer, and make shell and stir 27 ~ 33 seconds; And then add the water of in proportioning remaining 30% and carry out gelatinization stirring 55 ~ 65 seconds.As preferably, when pouring stirrer into, the temperature of water is all more than 60 DEG C.
This preparation method operates fairly simple, and can guarantee that teletostage casting of concrete in mass molding temperature is not less than 25 DEG C, makes this early age strength of concrete low, and can not freeze in pumping procedure, guarantees normally carrying out of construction; And while the consumption reducing common silicate cement and water, add appropriate HEA swelling agent, this concrete rate of set is reduced, and when condensing its slump conformance with standard.
Another technical problem to be solved by this invention is to provide the constructional method of the lower teletostage mass concrete of a kind of construction cost.
The present invention solves this technical problem adopted technical scheme: a kind of constructional method of teletostage mass concrete, specifically comprises the following steps, first lay blotter; Then paving on blotter vibrates is mixed with the concrete cushion of villaumite frostproofer, and is capped maintenance with fire-retardant heat insulation, and the incorporation of described villaumite frostproofer is not more than 1% of common silicate cement weight in concrete cushion; Lift except fire-retardant heat insulation quilt after the freeze proof intensity that concrete cushion reaches regulation, and spread cement-base infiltration crystallization layer formation waterproof layer at concrete cushion surface dry; Then assembling reinforcement; Then template construction is carried out; Then the preparation of teletostage mass concrete is carried out again; Then the teletostage mass concrete pumping prepared is built; Finally carry out insulation covering curing, and carry out thermometric by electronic instrument for measuring temperature, show the temperature difference in the tectal gauge control concrete of adjustment insulation in time and be not more than 2 DEG C/day with rate of temperature fall in 25 DEG C; At insulation covering curing after 14 days, remove insulation tectum by day, and survive the winter with dry sand or slag backfill immediately.
As preferably, first template construction is the brick loose tool of cushion cap, grade beam and base plate avris, smears the thick 1:2 sand-cement slurry of 20mm and smear waterproof layer inside loose tool; Then the fast easily net of post-cast strip sidewall is installed; Then the bobbin template at lift-mounting well, pump well place; That last mounting base surrounding is turned over exterior wall section hangs template, hangs template and exceeds concrete placings face 200mm.
As preferably, teletostage mass concrete is that boundary's blockette is built from being low to moderate high score 3 batches of continous way pumpings with post-cast strip, be specially and first build elevator raise and pump well, then build base plate, then build the section of turning over and pump well pool wall on base plate surrounding exterior wall on the section of turning over.
As preferably, the concrete operations that insulation covers are as follows, first in post-cast strip, the side elevation of elevator raise and pump well covers tight with plastic cloth, outside is capped with 4 layers of fire-retardant heat insulation again; Then build in base surface floating rear first with plastic cloth covering, be capped with 2 layers of fire-retardant heat insulation more above; Then safeguard with cotton felt in shear wall and side, pillar joint bar place and fastened by iron wire, in shear wall and the 2 layers of cotton felt packed types covering of pillar joint bar place end face; Finally in base plate surrounding, the 4 layers of fire-retardant heat insulation in the section of turning over both sides are gone along with sb. to guard him formula covering, and in base plate surrounding, the section of turning over end face 2 layers of cotton felt packed type cover.
As preferably, the tectal thickness δ of described insulation is by formula
calculate and obtain; Wherein, λ
0for concrete thermal conductivity, h is the actual (real) thickness of concrete casting injection body, λ
ibe the thermal conductivity of i-th layer of lagging material, T
bfor concrete depositing surface temperature, T
maxfor the top temperature in concrete casting injection body, T
qfor concrete reaches the average atmospheric temperature of top temperature, K
bfor the modified value of heat transfer coefficient.
Compared with prior art, the advantage of this constructional method is: first, do not need to use brooder, eliminates that brooder is built, time of removing and artificial, improves speed of application; Secondly, eliminate electricity consumption, and fire-retardant heat insulation is reusable, the maintenance costs required for insulation covering of this constructional method is assigned to every square metre of concrete and is about 59.23 yuan, reduces construction cost, has good economic benefit.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Proportioning 1 of teletostage mass concrete and preparation method thereof: in the proportioning of this concrete every cubic metre, each component doses is common silicate cement 315kg, stone 1032kg, sand 775kg, water 176kg, adulterant 120kg and additive 18kg; Common silicate cement in this proportioning is 42.5 grades, and adulterant is made up of flyash 86kg and HEA swelling agent 34kg, and additive is glycol concrete compound antifreezer.Its preparation method specifically comprises the following steps, first by stones whole in proportioning, sand and 70% water pour in stirrer, stir within 15 seconds, make stone and sand moistening, then pour common silicate cements whole in proportioning, flyash, HEA swelling agent and glycol concrete compound antifreezer into and make shell and stir 30 seconds, and then pour the water of remaining 30% into and carry out gelatinization and stir 60 seconds.Wherein, when pouring stirrer into, the temperature of water is 80 DEG C.
Proportioning 2 of teletostage mass concrete and preparation method thereof: in the proportioning of this concrete every cubic metre, each component doses is common silicate cement 309kg, stone 1002kg, sand 798kg, water 180kg, adulterant 122.5kg and additive 20.4kg; Common silicate cement in this proportioning is 42.5 grades, and adulterant is made up of flyash 88.5kg and HEA swelling agent 34kg, the aqueous solution of additive to be ethylene glycol content be 40% (quality).Its preparation method specifically comprises the following steps, first by stones whole in proportioning, sand and 70% water pour in stirrer, stir within 13 seconds, make stone and sand moistening, then pour the aqueous solution that common silicate cements whole in proportioning, flyash, HEA swelling agent and ethylene glycol content are 40% (quality) into and make shell and stir 27 seconds, and then pour the water of remaining 30% into and carry out gelatinization and stir 55 seconds.Wherein, when pouring stirrer into, the temperature of water is 60 DEG C.
Proportioning 3 of teletostage mass concrete and preparation method thereof: in the proportioning of this concrete every cubic metre, each component doses is common silicate cement 321kg, stone 1062kg, sand 752kg, water 172kg, adulterant 117.5kg and additive 16kg; Common silicate cement in this proportioning is 42.5 grades, and adulterant is made up of flyash 83.5kg and HEA swelling agent 34kg, and additive is YNF-9B poly carboxylic acid frostproofer.Its preparation method specifically comprises the following steps, first by stones whole in proportioning, sand and 70% water pour in stirrer, stir within 17 seconds, make stone and sand moistening, then pour common silicate cements whole in proportioning, flyash, HEA swelling agent and YNF-9B poly carboxylic acid frostproofer into and make shell and stir 33 seconds, and then pour the water of remaining 30% into and carry out gelatinization and stir 65 seconds.Wherein, when pouring stirrer into, the temperature of water is 100 DEG C.
The constructional method of teletostage mass concrete comprises following concrete steps: S1 first lays the thick blotter of 100mm; Then S2 paves the thick concrete cushion of the 100mm that is mixed with villaumite frostproofer with flat vibrator vibration compacting on blotter, then maintenance is capped with fire-retardant heat insulation, wherein, villaumite frostproofer by mass ratio be the sodium-chlor of 90%, the calcium chloride of 0% ~ 10% and 0% ~ 10% magnesium chloride form, villaumite frostproofer incorporation is not more than 1% of common silicate cement weight in concrete cushion, and concrete cushion is C15 level early-strength anti-freezing; S3 reaches after the freeze proof intensity specified in " construction work winter construction code " JGJ104 until concrete cushion and lifts except fire-retardant heat insulation quilt, and spreads cement-base infiltration crystallization layer formation waterproof layer at concrete cushion surface dry; S4 is assembling reinforcement then, and assembling reinforcement from low to high order is carried out, preferably solder type Steel Bracket after bottom layer of the reinforcing steel colligation, and arranges inclined support bar in the bracket, then arranges baseplate reinforcing bar, is connected between baseplate reinforcing bar by straight screw sleeve; Then S5 carries out template construction, first template construction is the brick loose tool of cushion cap, grade beam and base plate avris, smear sand-cement slurry (50 DEG C of hot water stirs) that the thick volume ratio of 20mm is 1:2 inside loose tool and smear waterproof layer outside sand-cement slurry, then the fast easily net of post-cast strip sidewall is installed, then the bobbin template at lift-mounting well, pump well place, that last mounting base surrounding is turned over exterior wall section hangs template, hangs template and exceeds concrete placings face 200mm; S6 then carries out the preparation of teletostage mass concrete again, chooses the wherein a kind of of above-mentioned 3 kinds of proportionings, and prepares by the volume of actual demand by corresponding preparation method; Then the teletostage mass concrete pumping prepared builds by S7, be that boundary's blockette is built from being low to moderate high score 3 batches of continous way pumpings with post-cast strip, be specially and first build elevator raise and pump well, then base plate is built, then build the section of turning over and pump well pool wall on base plate surrounding exterior wall on the section of turning over, the needs of building of a rear step concrete are built complete before the very solidifying native initial set of back, and interval time generally must not more than 2 hours; S9 finally carries out insulation covering curing, and carries out thermometric by conventional electronic instrument for measuring temperature, shows the temperature difference and be not more than 2 DEG C/day with rate of temperature fall in the tectal gauge control concrete of adjustment insulation in time in 25 DEG C; S10 after 14 days, removes insulation tectum at insulation covering curing by day, and survives the winter with dry sand or slag backfill immediately.
As preferably, the concrete operations that insulation covers are as follows, first in post-cast strip, the side elevation of elevator raise and pump well covers tight with plastic cloth, outside is capped with 4 layers of fire-retardant heat insulation again; Then build in base surface floating rear first with plastic cloth covering, be capped with 2 layers of fire-retardant heat insulation more above; Then safeguard with cotton felt in shear wall and side, pillar joint bar place and fastened by iron wire, in shear wall and the 2 layers of cotton felt packed types covering of pillar joint bar place end face; Finally in base plate surrounding, the 4 layers of fire-retardant heat insulation in the section of turning over both sides are gone along with sb. to guard him formula covering, and in base plate surrounding, the section of turning over end face 2 layers of cotton felt packed type cover.Wherein, tectal thickness δ is incubated by formula
calculate and obtain, λ
0for concrete thermal conductivity, h is the actual (real) thickness of concrete casting injection body, λ
ibe the thermal conductivity of i-th layer of lagging material (above-mentioned plastic cloth, fire-retardant heat insulation quilt, cotton felt), T
bfor concrete depositing surface temperature, T
maxfor the top temperature in concrete casting injection body, T
qfor concrete reaches the average atmospheric temperature of top temperature (building latter 3 days ~ 5 days), K
bfor the modified value of heat transfer coefficient.
The modified value K of heat-transfer system
bspan be 1.3 ~ 2.3, table specific as follows:
Wherein, plastic cloth is non-ventilating material, and fire-retardant heat insulation is not easily ventilative material, and cotton felt is easy ventilative lagging material; K
1value is not more than the situation of 4m/s, K for wind speed
2value is greater than the situation of 4m/s for wind speed.
Claims (10)
1. a teletostage mass concrete, is characterized in that: in this concrete mix of every cubic metre, each component doses is common silicate cement 309kg ~ 321kg, stone 1002kg ~ 1062kg, sand 752kg ~ 798kg, water 172kg ~ 180kg, adulterant 117.5kg ~ 122.5kg and additive 16kg ~ 20.4kg.
2. teletostage mass concrete according to claim 1, is characterized in that: described adulterant is made up of flyash and HEA swelling agent, and the use doses of every cubic metre is flyash 83.5kg ~ 88.5kg, HEA swelling agent 34kg.
3. teletostage mass concrete according to claim 2, is characterized in that: described additive is glycol concrete compound antifreezer or YNF-9B poly carboxylic acid frostproofer.
4. the preparation method of a teletostage mass concrete, it is characterized in that: specifically comprise the following steps, first pour in stirrer stones whole in the proportioning of teletostage mass concrete according to claim 3, sand and 70% water, stir within 13 ~ 17 seconds, make stone and sand moistening, then pour common silicate cement, adulterant and additive whole in proportioning into and make shell and stir 27 ~ 33 seconds, and then pour the water of in proportioning remaining 30% into and carry out gelatinization stirring 55 ~ 65 seconds.
5. the preparation method of teletostage mass concrete according to claim 4, is characterized in that: when pouring stirrer into, and the temperature of water is all more than 60 DEG C.
6. a constructional method for teletostage mass concrete, is characterized in that: specifically comprise the following steps, first lays blotter; Then paving on blotter vibrates is mixed with the concrete cushion of villaumite frostproofer, and is capped maintenance with fire-retardant heat insulation, and the incorporation of described villaumite frostproofer is not more than 1% of common silicate cement weight in concrete cushion; Lift except fire-retardant heat insulation quilt after the freeze proof intensity that concrete cushion reaches regulation, and spread cement-base infiltration crystallization layer formation waterproof layer at concrete cushion surface dry; Then assembling reinforcement; Then template construction is carried out; Then carry out the preparation of teletostage mass concrete again, wherein in this teletostage Research of Mixture Proportion in Mass Concrete of High-rise Building of every cubic metre, each component doses is common silicate cement 309kg ~ 321kg, stone 1002kg ~ 1062kg, sand 752kg ~ 798kg, water 172kg ~ 180kg, adulterant 117.5kg ~ 122.5kg and additive 16kg ~ 20.4kg; Then the teletostage mass concrete pumping prepared is built; Finally carry out insulation covering curing, and carry out thermometric by electronic instrument for measuring temperature, show the temperature difference in the tectal gauge control concrete of adjustment insulation in time and be not more than 2 DEG C/day with rate of temperature fall in 25 DEG C; At insulation covering curing after 14 days, remove insulation tectum by day, and survive the winter with dry sand or slag backfill immediately.
7. the constructional method of teletostage mass concrete according to claim 6, is characterized in that: first template construction is the brick loose tool of cushion cap, grade beam and base plate avris, smears the thick 1:2 sand-cement slurry of 20mm and smear waterproof layer inside loose tool; Then the fast easily net of post-cast strip sidewall is installed; Then the bobbin template at lift-mounting well, pump well place; That last mounting base surrounding is turned over exterior wall section hangs template, hangs template and exceeds concrete placings face 200mm.
8. the constructional method of teletostage mass concrete according to claim 7, it is characterized in that: teletostage mass concrete is that boundary's blockette is built from being low to moderate high score 3 batches of continous way pumpings with post-cast strip, be specially and first build elevator raise and pump well, then build base plate, then build the section of turning over and pump well pool wall on base plate surrounding exterior wall on the section of turning over.
9. the constructional method of teletostage mass concrete according to claim 7, it is characterized in that: the concrete operations that insulation covers are as follows, first in post-cast strip, the side elevation of elevator raise and pump well covers tight with plastic cloth, outside is capped with 4 layers of fire-retardant heat insulation again; Then build in base surface floating rear first with plastic cloth covering, be capped with 2 layers of fire-retardant heat insulation more above; Then safeguard with cotton felt in shear wall and side, pillar joint bar place and fastened by iron wire, in shear wall and the 2 layers of cotton felt packed types covering of pillar joint bar place end face; Finally in base plate surrounding, the 4 layers of fire-retardant heat insulation in the section of turning over both sides are gone along with sb. to guard him formula covering, and in base plate surrounding, the section of turning over end face 2 layers of cotton felt packed type cover.
10. the constructional method of teletostage mass concrete according to claim 9, is characterized in that: the tectal thickness δ of described insulation is by formula
calculate and obtain; Wherein, λ
0for concrete thermal conductivity, h is the actual (real) thickness of concrete casting injection body, λ
ibe the thermal conductivity of i-th layer of lagging material, T
bfor concrete depositing surface temperature, T
maxfor the top temperature in concrete casting injection body, T
qfor average atmospheric temperature when concrete reaches top temperature, K
bfor the modified value of heat transfer coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356644.4A CN104230251B (en) | 2014-07-25 | 2014-07-25 | The constructional method of teletostage mass concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356644.4A CN104230251B (en) | 2014-07-25 | 2014-07-25 | The constructional method of teletostage mass concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104230251A true CN104230251A (en) | 2014-12-24 |
| CN104230251B CN104230251B (en) | 2016-02-24 |
Family
ID=52219269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410356644.4A Active CN104230251B (en) | 2014-07-25 | 2014-07-25 | The constructional method of teletostage mass concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104230251B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418006A (en) * | 2015-11-30 | 2016-03-23 | 湖北大学 | Temperature gradient controlled mass concrete for bridges |
| CN108999405A (en) * | 2018-07-25 | 2018-12-14 | 中水电第十工程局（郑州）有限公司 | The construction method of severe cold area winter mass concrete |
| CN109354463A (en) * | 2018-12-08 | 2019-02-19 | 曙光装配式建筑科技（浙江）有限公司 | Impervious freeze proof C30 concrete of one kind and preparation method thereof |
| CN110041025A (en) * | 2019-04-04 | 2019-07-23 | 广西建工集团冶金建设有限公司 | A kind of ameliorative mass concrete and preparation method thereof |
| CN110105086A (en) * | 2019-05-14 | 2019-08-09 | 哈尔滨工业大学 | A kind of concrete phase-transition heat-storage conservation layer of cold area's winter construction and its maintenance process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640759A (en) * | 1992-07-23 | 1994-02-15 | Daido Concrete Kogyo Kk | Production of high-strength light-weight concrete molded body and concrete molded body |
| CN1262165A (en) * | 1999-02-02 | 2000-08-09 | 廖向明 | Forced continuous stirring station |
| CN103420634A (en) * | 2012-05-22 | 2013-12-04 | 张芳远 | Preparation method for composite glycol concrete antifreezing agent |
-
2014
- 2014-07-25 CN CN201410356644.4A patent/CN104230251B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0640759A (en) * | 1992-07-23 | 1994-02-15 | Daido Concrete Kogyo Kk | Production of high-strength light-weight concrete molded body and concrete molded body |
| CN1262165A (en) * | 1999-02-02 | 2000-08-09 | 廖向明 | Forced continuous stirring station |
| CN103420634A (en) * | 2012-05-22 | 2013-12-04 | 张芳远 | Preparation method for composite glycol concrete antifreezing agent |
Non-Patent Citations (3)
| Title |
|---|
| 何庆才: "低温条件下大体积混凝土施工质量控制", 《建筑技术》 * |
| 周威 等: "大体积抗渗混凝土冬季施工的质量控制", 《膨胀剂与膨胀混凝土》 * |
| 周威 等: "大体积抗渗混凝土冬季施工的质量控制", 《膨胀剂与膨胀混凝土》, 30 November 2005 (2005-11-30), pages 7 - 8 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105418006A (en) * | 2015-11-30 | 2016-03-23 | 湖北大学 | Temperature gradient controlled mass concrete for bridges |
| CN108999405A (en) * | 2018-07-25 | 2018-12-14 | 中水电第十工程局（郑州）有限公司 | The construction method of severe cold area winter mass concrete |
| CN109354463A (en) * | 2018-12-08 | 2019-02-19 | 曙光装配式建筑科技（浙江）有限公司 | Impervious freeze proof C30 concrete of one kind and preparation method thereof |
| CN109354463B (en) * | 2018-12-08 | 2021-02-02 | 曙光装配式建筑科技（浙江）有限公司 | Anti-seepage and anti-freezing C30 concrete and preparation method thereof |
| CN110041025A (en) * | 2019-04-04 | 2019-07-23 | 广西建工集团冶金建设有限公司 | A kind of ameliorative mass concrete and preparation method thereof |
| CN110105086A (en) * | 2019-05-14 | 2019-08-09 | 哈尔滨工业大学 | A kind of concrete phase-transition heat-storage conservation layer of cold area's winter construction and its maintenance process |
| CN110105086B (en) * | 2019-05-14 | 2021-09-07 | 哈尔滨工业大学 | Curing method for realizing cold region winter construction concrete phase change heat storage curing layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104230251B (en) | 2016-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104230251B (en) | The constructional method of teletostage mass concrete | |
| CN105298133B (en) | Lift the design and construction method of mass concrete invert crack resistance | |
| CN107602018B (en) | silane coupling agent-fly ash floating bead light high-strength foam concrete and preparation method thereof | |
| CN104860714B (en) | One-component tolerant noise-insulating warm-keeping light mortar material and its construction method | |
| CN106836808A (en) | Self-compacting large-volume concrete construction method | |
| CN110004975B (en) | Concrete self-waterproof structure of underground engineering of residential building and construction method thereof | |
| CN108999405A (en) | The construction method of severe cold area winter mass concrete | |
| CN101608503B (en) | Method for preventing and controlling cracks of hollow wallboard for building | |
| CN103556830A (en) | Controllable cast-in-place foam concrete roof construction method | |
| CN108625597A (en) | A kind of concreting in cold-weather method | |
| CN109356160A (en) | A kind of construction method of mass concrete | |
| CN108314394A (en) | Water-proofing anticracking insulation blocks and preparation method thereof | |
| CN108049521B (en) | A kind of assembled wall structure of the assembled light raw-soil and bionical soil RPC material | |
| CN110078453A (en) | A kind of lightweight concrete and its preparation method and application | |
| CN111980311A (en) | Extruded sheet foam concrete waterproof and energy-saving integrated roof system for severe cold area and construction method thereof | |
| CN106677424A (en) | Light earthquake-resistant wallboard and production method thereof | |
| CN101492280A (en) | Phosphate cellular concrete and process for producing its product | |
| CN108329002A (en) | Light foamed geopolymer composite insulation board and preparation method thereof | |
| CN105370041A (en) | Concrete engineering construction method under extreme temperature difference in desert area | |
| CN101775861B (en) | Cast in situs construction method for light heat-insulation integral wall of energy-saving construction house and light heat-insulation wall material | |
| CN110469113A (en) | A kind of self-compact concrete in construction method under hot conditions | |
| CN109702888A (en) | Board production technology is overlapped under a kind of cryogenic conditions | |
| CN1253398C (en) | Cast-in-situs polystyrene cement composite foaming material and constructing method thereof | |
| CN110451911A (en) | A kind of flooring keeps the temperature the preparation method of levelling integrated gravity flowing levelling mortar | |
| CN109516754A (en) | A kind of light phase transition air entrained concrete, masonry wall and its construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 315104, No. 3, No. 818, Qiming Road, Ningbo, Zhejiang, Yinzhou District, 22 Applicant after: NINGBO ZHONGZHOU BUILDING ENGINEERING CO., LTD. Address before: 315104, Zhejiang, Ningbo, Yinzhou District should be named 818, No. 3, No. 22 Applicant before: NINGBO ZHONGZHOU BUILDING ENGINEERING CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |