CN102758436A - Benzene hydrogenation engineering concrete pouring method - Google Patents
Benzene hydrogenation engineering concrete pouring method Download PDFInfo
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- CN102758436A CN102758436A CN2011101064346A CN201110106434A CN102758436A CN 102758436 A CN102758436 A CN 102758436A CN 2011101064346 A CN2011101064346 A CN 2011101064346A CN 201110106434 A CN201110106434 A CN 201110106434A CN 102758436 A CN102758436 A CN 102758436A
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Abstract
The invention relates to a benzene hydrogenation engineering concrete pouring method. Premixed commodity concrete is poured into a reinforcement formwork by a concrete tank wagon and a pump truck. The benzene hydrogenation engineering concrete pouring method is characterized by comprising the following steps: a, before pumping the concrete, adding mortar with the same grade with the concrete into the pumping truck, and then pumping the concrete; b, during pouring the concrete, blanking in a layered mode and vibrating in a layered mode; c, in the pouring process, reducing the slump of the concrete to the greatest extent; d, waiting for 2 hours at the position wherein a hoisting die is arranged after the concrete at the bottom of the formwork is densely poured and tamped; e, pouring and tamping the concrete on a bottom plate of a cooling tower and carrying out pouring propulsion in a mode of layering on inclined planes, naturally flowing, pouring and tamping on thin layers and pouring to the top in one step; f, when pouring a large volume of concrete, carrying out continuous construction; and g, before the concrete is initially settled, strickling, crushing for times, rubbing, grinding and then carrying out coverage, moisturizing, heat preservation and maintenance.
Description
Technical field
The present invention relates to a kind of concrete construction method, specifically, is the concreting method of a kind of benzene hydrogenation engineering.
Background technology
The technology of benzene hydrogenation device is more special, its system complex, and equipment is many, and the pressure of system own, temperature are higher, and pump unit does not allow idle running.The benzene hydrogenation engineering mainly is divided into the ancillary facility of central control room and electric substation, refining plant, water supply and sewage work, air compression station, storage and handling facility (tank field and pump house), the power supply of full factory and the illumination of full factory, torch and engineering; Lightning protection, fire prevention, explosion-proof specific (special) requirements are arranged in the electric installation of these facilities, and wherein the concreting of benzene hydrogenation engineering is the important step of entirely descending in the basic system.At present domesticly built or still be in the stage lack of standardization building benzene hydrogenation engineering concrete pouring construction, existed much not science, irrational place, manufacturing process is numerous and diverse, manufacturing cost is high.
Therefore known benzene hydrogenation engineering concreting method exists above-mentioned all inconvenience and problem.
Summary of the invention
The object of the invention is to propose a kind of safe and reliable benzene hydrogenation engineering concreting method.
For realizing above-mentioned purpose, technical solution of the present invention is:
The concreting method of a kind of benzene hydrogenation engineering is built the premixing Commercial Concrete in the reinforcing bar template with concrete tank and pump truck, it is characterized in that may further comprise the steps:
A, pump truck are packed into earlier before pumping of concrete and the mortar 3m of concrete with label
3About, if there is water elder generation that boom is moved on to outside the foundation ditch in the pump truck, pump the residual water in the pump truck, move to the interior beginning of base plate mortar again and build, mortar will evenly be removed out, and follows pumping of concrete after the mortar;
When b, concreting, layering blanking, layering are vibrated; When adopting inclined-plane top and bottom process disturbing concrete, vibrating head will be vibrated to the top, slope by toe;
C, in the process of building, reduce the concrete slump, to reduce concrete water bleeding as far as possible;
D, for the position of hanging mould is arranged, wait for 2 hours in the closely knit back of casting and compacting of concrete in the template bottom, then disturbing concrete up again is in order to avoid the leftover bits and pieces concrete runs slurry;
The casting and compacting of concrete of e, cooling tower base plate will be built propelling with the mode of " inclined-plane layering, trickling naturally, thin layer waters and smash, once to the top ", and on frame column, copied 50 lines, indicates with red lacquer, builds foundation highly as concrete;
F, when building prevention of mass concrete, construct continuously, arrange day and night that two shifts build, and establish the special messenger and be responsible for;
G, before concrete initial set, tentatively wipe concrete surface off with the long floating rule of 2m, and roll in length and breadth several times with iron roller by absolute altitude; After concrete is received water, adopt wooden raft plate to rub mill with the hands again, with closed concrete surface shrinkage crack; In time cover then, preserve moisture, insulated curing.
Benzene hydrogenation engineering of the present invention concreting method can also adopt following technical measures further to realize.
Aforesaid method, among the wherein said step b, moistening template is earlier wanted in concreting when hot weather construction, especially will build preceding 24 hours bed course or the adjacent concrete that other has been built under the abundant moistening expansive concrete.
Aforesaid method; Among the wherein said step b, concreting will select suitable temperature to build concrete in mass when hot weather construction, avoids hot weather as far as possible and builds; And can notify the concrete plant to adopt water at low temperature ready-mixed concrete, the corresponding retarding water reducer of admixture.
Aforesaid method among the wherein said step b, will be incubated concrete tank and pump truck during the concreting construction in winter, and temperature reaches below 5 ℃ will set up booth thermal insulation to building the zone.
Aforesaid method, among the wherein said step b, during the concreting construction in winter if must not carry out casting of concrete in mass below the no specific (special) requirements-5 ℃.
Aforesaid method among the wherein said step b, if in the pouring process, occur to have a power failure, is equipped with one of small generator by the scene during concreting, and the vibratory concrete that does not vibrate after vibrating head will be had a power failure is closely knit.
Aforesaid method, among the wherein said step b, if in the pouring process, occur raining, the concrete that available colour bar cloth will have been poured into a mould covers, and the concrete vibrating that vibrating head will be drenched with rain is closely knit during concreting.
Aforesaid method among the wherein said step b, if rain is excessive and the time is long, can stop construction during concreting, and constuction joint is set, but the concrete that must vibrate and build.
Aforesaid method, the processing of wherein said constuction joint may further comprise the steps:
1. before on the concrete surface that has hardened, continuing concreting, remove rubbish, the loosening stone in surface and weak layer of concrete, cut a hole hair simultaneously, water is rinsed well and is fully moistening, and the residual ponding of removing concrete surface; Also foreign material such as the greasy dirt on the full scale clearance reinforcing bar, cement mortar;
2. before building, the level construction is met and is spread the thick cement mortar one deck of 10～15mm earlier, and the interior slurry composition of its match ratio and concrete is identical;
3. when constuction joint begins to continue to build, avoid being directly adjacent to the tape edge blanking, before machinery vibrated, the place advanced gradually to constuction joint, and distance 80～100cm place stops to vibrate, but reinforcement combines closely it to the tamping work of constuction joint seam.
Aforesaid method among the wherein said step b, is vibrated and will be used the dither vibrated concrete; Each slotting point that vibrating head inserts in the concrete is plum blossom shape layout, and spacing should be even, and slotting dot spacing is no more than 1.25 times of vibrating head useful effect radius; And less than 500mm, in case leak-stopping shakes; When vibrating, accomplish " fast inserting pulled out slowly "; Vibrate when going up layer concrete, vibrating spear must insert lower-layer concrete 50～100mm, to eliminate the seam of two interlayers, the perdurabgility of whenever inserting point with the surface bubble does not appear, glow cement paste and outward appearance evenly till, can not cross and shake; When vibrating, should vibrating head be twitched up and down back and forth, make concrete jolt ramming even; Should strengthen secondary vibration for the intensive wall of reinforcing bar, post position of joints, guarantee concrete compaction.
Aforesaid method among the wherein said step c, checked the slump of delivering to on-site concrete at any time, accredits on-the-spot professional and technical personnel and concrete production factory if any abnormal conditions by the concrete plant and gets in touch adjustment;
Aforesaid method, 18 people are established in the per tour of wherein said shift, and the concrete division of labor of per tour is: 8 people are vibrated; 3 people's levellings; Protect mould and protect each 2 people of muscle; Tank car is put concrete 1 people; Pump truck is commanded 1 people; Mechanic 1 people; Electrician 1 people; Construction person in charge 1 people.
After adopting technique scheme, benzene hydrogenation engineering of the present invention concreting method has the following advantages:
1, construction sequence is reasonable in design, simple to operate;
2, workmanship is safe and reliable;
3, reduce the engineering construction cost.
The specific embodiment
Below further specify the present invention through specific embodiment.
Benzene hydrogenation engineering of the present invention concreting method is built the premixing Commercial Concrete in reinforcing bar template by inspection with concrete mixing and transporting car and pump truck, it is characterized in that may further comprise the steps:
A, pump truck are packed into earlier before pumping of concrete and the mortar 3m of concrete with label
3About, if there is water elder generation that boom is moved on to outside the foundation ditch in the pump truck, pump the residual water in the pump truck, move to the interior beginning of base plate mortar again and build, mortar will evenly be removed out, and follows pumping of concrete after the mortar;
When b, concreting, layering blanking, layering are vibrated; When adopting inclined-plane top and bottom process disturbing concrete, vibrating head will be vibrated to the top, slope by toe; Vibrated concrete should use dither, and each slotting point that vibrating head inserts in the concrete is plum blossom shape layout, and spacing should be even, and slotting dot spacing should not surpass 1.25 times of vibrating head useful effect radius, and less than 500mm, in case leak-stopping shakes.When vibrating, accomplish " fast inserting pulled out slowly ".Vibrate when going up layer concrete, vibrating spear must insert lower-layer concrete 50～100mm, to eliminate the seam of two interlayers, the perdurabgility of whenever inserting point with the surface bubble does not appear, glow cement paste and outward appearance evenly till, can not cross and shake.When vibrating, should vibrating head be twitched up and down back and forth, make concrete jolt ramming even.Should strengthen secondary vibration for the intensive wall of reinforcing bar, post position of joints, guarantee concrete compaction;
Moistening template is earlier wanted in concreting when hot weather construction, especially will be before building bed course under the abundant moistening expansive concrete of 24h or the adjacent concrete that other has been built; Select suitable temperature to build concrete in mass, avoid hot weather as far as possible and build, can adopt the water at low temperature ready-mixed concrete summer, the corresponding retarding water reducer of admixture;
Will be incubated concrete tank and pump truck during the concreting construction in winter, temperature reaches below 5 ℃ will set up booth thermal insulation to building the zone; During the concreting construction in winter if must not carry out casting of concrete in mass below the no specific (special) requirements-5 ℃;
During concreting if in the pouring process, occur to have a power failure, on-the-spot one of the small generator that is equipped with, the vibratory concrete that does not vibrate after vibrating head will be had a power failure is closely knit;
If in the pouring process, occur raining, the concrete that available colour bar cloth will have been poured into a mould covers, and the concrete vibrating that vibrating head will be drenched with rain is closely knit during concreting;
If rain is excessive and the time is long, can stop construction during concreting, constuction joint is set, but the concrete that must vibrate and build.When continuing concreting at the constuction joint place; Must meet construction and handle: before 1. on the concrete surface that has hardened, continuing concreting; Remove rubbish, the loosening stone in surface and weak layer of concrete; Cut a hole simultaneously hair, water is rinsed well and is fully moistening, and removes the residual ponding of concrete surface; Also full scale clearances of foreign material such as the greasy dirt on the reinforcing bar, cement mortar; 2. before building, the level construction is met and is spread the thick cement mortar one deck of 10-15mm earlier, and the interior slurry composition of its match ratio and concrete is identical; 3. when constuction joint begins to continue to build, avoid being directly adjacent to the tape edge blanking, before machinery vibrated, the place advanced gradually to constuction joint, and stopped to vibrate apart from the 80-100cm place, but strengthened the tamping work to the constuction joint seam, and it is combined closely.
C, in the process of building, reduce the concrete slump, to reduce concrete water bleeding as far as possible; Delivering to the slump of on-site concrete should check at any time, all should accredit on-the-spot professional and technical personnel and concrete production factory by the concrete plant if any abnormal conditions and get in touch adjustment.
D, for the position of hanging mould is arranged, wait for 2 hours in the closely knit back of casting and compacting of concrete in the template bottom, then disturbing concrete up again is in order to avoid the leftover bits and pieces concrete runs slurry.
The casting and compacting of concrete of e, cooling tower base plate will be built propelling with the mode of " inclined-plane layering, trickling naturally, thin layer waters and smash, once to the top ", and on frame column, copied 50 lines, indicates with red lacquer, builds foundation highly as concrete.
F, when building prevention of mass concrete, construct continuously, build day and night two shifts of arrangement, and establish the special messenger and be responsible for; 18 people are established in per tour, and the concrete division of labor of per tour is: 8 people are vibrated; 3 people's levellings; Protect mould and protect each 2 people of muscle; Tank car is put concrete 1 people; Pump truck is commanded 1 people; Mechanic 1 people; Electrician 1 people; Construction person in charge 1 people.Whole Coordination Treatment is responsible in 2 of administrative staff's per tour.
The processing of g, concrete surface: before concrete initial set, tentatively press absolute altitude and wipe off, and roll in length and breadth several times with iron roller with the long floating rule of 2m; After concrete is received water, adopt wooden raft plate to rub mill with the hands again, with closed concrete surface shrinkage crack; In time cover then, preserve moisture, insulated curing.
Above embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (12)
1. benzene hydrogenation engineering concreting method is built the premixing Commercial Concrete in the reinforcing bar template with concrete tank and pump truck, it is characterized in that may further comprise the steps:
A, pump truck are packed into earlier before pumping of concrete and the mortar 3m of concrete with label
3About, if there is water elder generation that boom is moved on to outside the foundation ditch in the pump truck, pump the residual water in the pump truck, move to the interior beginning of base plate mortar again and build, mortar will evenly be removed out, and follows pumping of concrete after the mortar;
When b, concreting, layering blanking, layering are vibrated; When adopting inclined-plane top and bottom process disturbing concrete, vibrating head will be vibrated to the top, slope by toe;
C, in the process of building, reduce the concrete slump, to reduce concrete water bleeding as far as possible;
D, for the position of hanging mould is arranged, wait for 2 hours in the closely knit back of casting and compacting of concrete in the template bottom, then disturbing concrete up again is in order to avoid the leftover bits and pieces concrete runs slurry;
The casting and compacting of concrete of e, cooling tower base plate will be built propelling with the mode of " inclined-plane layering, trickling naturally, thin layer waters and smash, once to the top ", and on frame column, copied 50 lines, indicates with red lacquer, builds foundation highly as concrete;
F, when building prevention of mass concrete, construct continuously, arrange day and night that two shifts build, and establish the special messenger and be responsible for;
G, before concrete initial set, tentatively wipe concrete surface off with the long floating rule of 2m, and roll in length and breadth several times with iron roller by absolute altitude; After concrete is received water, adopt wooden raft plate to rub mill with the hands again, with closed concrete surface shrinkage crack; In time cover then, preserve moisture, insulated curing.
2. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that; Among the described step b; Moistening template is earlier wanted in concreting when hot weather construction, especially will build preceding 24 hours bed course or the adjacent concrete that other has been built under the abundant moistening expansive concrete.
3. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that; Among the described step b, concreting will select suitable temperature to build concrete in mass when hot weather construction, avoids hot weather as far as possible and builds; And can notify the concrete plant to adopt water at low temperature ready-mixed concrete, the corresponding retarding water reducer of admixture.
4. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that; Among the described step b, will be incubated concrete tank and pump truck during the concreting construction in winter, temperature reaches below 5 ℃ will set up booth thermal insulation to building the zone.
5. benzene hydrogenation engineering as claimed in claim 1 concreting method is characterized in that, among the described step b, during the concreting construction in winter if must not carry out casting of concrete in mass below the no specific (special) requirements-5 ℃.
6. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that, among the described step b, have a power failure if in the pouring process, occur during concreting; Be equipped with one of small generator by the scene, vibrating head will be had a power failure after not the vibration vibratory concrete closely knit.
7. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that, among the described step b, rain if in the pouring process, occur during concreting; The concrete that available colour bar cloth will have been poured into a mould covers, and the concrete vibrating that vibrating head will be drenched with rain is closely knit.
8. benzene hydrogenation engineering as claimed in claim 1 concreting method is characterized in that, among the described step b, if rain is excessive and the time is long, can stop construction during concreting, and constuction joint is set, but the concrete that must vibrate and build.
9. benzene hydrogenation engineering as claimed in claim 8 concreting method is characterized in that, the processing of said constuction joint may further comprise the steps:
1. before on the concrete surface that has hardened, continuing concreting, remove rubbish, the loosening stone in surface and weak layer of concrete, cut a hole hair simultaneously, water is rinsed well and is fully moistening, and the residual ponding of removing concrete surface; Also foreign material such as the greasy dirt on the full scale clearance reinforcing bar, cement mortar;
2. before building, the level construction is met and is spread the thick cement mortar one deck of 10～15mm earlier, and the interior slurry composition of its match ratio and concrete is identical;
3. when constuction joint begins to continue to build, avoid being directly adjacent to the tape edge blanking, before machinery vibrated, the place advanced gradually to constuction joint, and distance 80～100cm place stops to vibrate, but reinforcement combines closely it to the tamping work of constuction joint seam.
10. benzene hydrogenation engineering as claimed in claim 1 concreting method is characterized in that, among the described step b; Vibrate and to use the dither vibrated concrete; Each slotting point that vibrating head inserts in the concrete is plum blossom shape layout, and spacing should be even, and slotting dot spacing is no more than 1.25 times of vibrating head useful effect radius; And less than 500mm, in case leak-stopping shakes; When vibrating, accomplish " fast inserting pulled out slowly "; Vibrate when going up layer concrete, vibrating spear must insert lower-layer concrete 50～100mm, to eliminate the seam of two interlayers, the perdurabgility of whenever inserting point with the surface bubble does not appear, glow cement paste and outward appearance evenly till, can not cross and shake; When vibrating, should vibrating head be twitched up and down back and forth, make concrete jolt ramming even; Should strengthen secondary vibration for the intensive wall of reinforcing bar, post position of joints, guarantee concrete compaction.
11. benzene hydrogenation engineering as claimed in claim 1 concreting method; It is characterized in that; Among the described step c, check the slump of delivering to on-site concrete at any time, accredit on-the-spot professional and technical personnel and concrete production factory if any abnormal conditions by the concrete plant and get in touch adjustment.
12. benzene hydrogenation engineering as claimed in claim 1 concreting method is characterized in that, 18 people are established in the per tour of said shift, and the concrete division of labor of per tour is: 8 people are vibrated; 3 people's levellings; Protect mould and protect each 2 people of muscle; Tank car is put concrete 1 people; Pump truck is commanded 1 people; Mechanic 1 people; Electrician 1 people; Construction person in charge 1 people.
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Cited By (12)
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| CN103410148A (en) * | 2013-05-29 | 2013-11-27 | 中建保华建筑有限责任公司 | Intercept netting applied to concrete pouring of foundation base plate and construction method thereof |
| CN103669837A (en) * | 2013-12-31 | 2014-03-26 | 青建集团股份公司 | Construction method for rapidly removing formwork on slope concrete structure |
| CN103669360A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Application of pumpcrete construction method in mountainous power transmission lines |
| CN104164877A (en) * | 2014-08-15 | 2014-11-26 | 葛洲坝集团基础工程有限公司 | Dike slope toe underwater concrete construction method |
| CN104264676A (en) * | 2014-09-25 | 2015-01-07 | 沈建东 | Construction method of mass concrete of high-rise building foundations |
| CN104264678A (en) * | 2014-10-15 | 2015-01-07 | 四川电力建设三公司 | Mass concrete cracking proof construction technology |
| CN107814528A (en) * | 2017-11-08 | 2018-03-20 | 上海市建筑科学研究院 | A kind of forming method of high fine and close low porosity concrete |
| CN110469112A (en) * | 2019-07-16 | 2019-11-19 | 中交一公局第二工程有限公司 | A kind of concreting method |
| CN111074922A (en) * | 2020-01-02 | 2020-04-28 | 中国建筑第八工程局有限公司 | Construction method for reverse construction concrete cushion in foundation pit |
| CN111255239A (en) * | 2018-11-30 | 2020-06-09 | 中国建筑第八工程局有限公司 | Mass radiation-proof concrete homogeneous pouring method |
| CN112177001A (en) * | 2020-09-18 | 2021-01-05 | 中国三峡建设管理有限公司 | Method for improving construction efficiency of large-volume concrete pouring by dragging or overturning mold |
| CN112343344A (en) * | 2020-09-16 | 2021-02-09 | 上海宝冶冶金工程有限公司 | Construction method of low-hydration-heat concrete |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410148A (en) * | 2013-05-29 | 2013-11-27 | 中建保华建筑有限责任公司 | Intercept netting applied to concrete pouring of foundation base plate and construction method thereof |
| CN103410148B (en) * | 2013-05-29 | 2015-11-25 | 中建保华建筑有限责任公司 | A kind of catch net and construction method thereof being applied to sole plate concreting |
| CN103669360B (en) * | 2013-11-30 | 2016-01-13 | 国家电网公司 | The application of pumping concrete construction method in the transmission line of electricity of mountain area |
| CN103669360A (en) * | 2013-11-30 | 2014-03-26 | 国家电网公司 | Application of pumpcrete construction method in mountainous power transmission lines |
| CN103669837A (en) * | 2013-12-31 | 2014-03-26 | 青建集团股份公司 | Construction method for rapidly removing formwork on slope concrete structure |
| CN104164877A (en) * | 2014-08-15 | 2014-11-26 | 葛洲坝集团基础工程有限公司 | Dike slope toe underwater concrete construction method |
| CN104164877B (en) * | 2014-08-15 | 2016-01-20 | 葛洲坝集团基础工程有限公司 | A kind of dyke toe underwater concrete construction method |
| CN104264676A (en) * | 2014-09-25 | 2015-01-07 | 沈建东 | Construction method of mass concrete of high-rise building foundations |
| CN104264678A (en) * | 2014-10-15 | 2015-01-07 | 四川电力建设三公司 | Mass concrete cracking proof construction technology |
| CN104264678B (en) * | 2014-10-15 | 2016-02-17 | 四川电力建设三公司 | Concrete in mass Anti-cracking construction technology |
| CN107814528A (en) * | 2017-11-08 | 2018-03-20 | 上海市建筑科学研究院 | A kind of forming method of high fine and close low porosity concrete |
| CN111255239A (en) * | 2018-11-30 | 2020-06-09 | 中国建筑第八工程局有限公司 | Mass radiation-proof concrete homogeneous pouring method |
| CN110469112A (en) * | 2019-07-16 | 2019-11-19 | 中交一公局第二工程有限公司 | A kind of concreting method |
| CN111074922A (en) * | 2020-01-02 | 2020-04-28 | 中国建筑第八工程局有限公司 | Construction method for reverse construction concrete cushion in foundation pit |
| CN111074922B (en) * | 2020-01-02 | 2021-08-10 | 中国建筑第八工程局有限公司 | Construction method for reverse construction concrete cushion in foundation pit |
| CN112343344A (en) * | 2020-09-16 | 2021-02-09 | 上海宝冶冶金工程有限公司 | Construction method of low-hydration-heat concrete |
| CN112177001A (en) * | 2020-09-18 | 2021-01-05 | 中国三峡建设管理有限公司 | Method for improving construction efficiency of large-volume concrete pouring by dragging or overturning mold |
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Application publication date: 20121031 |