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用戶意見

地基加固的新材料

New Material for foundation Reinforcement

GC灌漿质料正在合肥ABB公司應用情況實例

一、注漿前廠房地坪的情況

合肥ABB公司是一家死産大型變壓器的中外合資企業,是正在合肥變壓器廠基礎上改建而成,生産車間应用局部舊廠房,其地坪承載的力小,而ABB公司死産的均是大型變壓器,每台重100-150噸,因为遭到長期超載运用,地坪下沈嚴重,區域面積2000余平方米,有的下沈深度超過15cm,嚴重影響了死産一般运用。

二、地坪注漿情況

往年蒲月我公司應ABB公司要求,承擔了ABB公司地坪注漿工程。

1.用上陆地泾水泥廠生産的GC灌漿材质料(地坪專用)進行單液注漿

GC灌漿质料的主要性能:

凝結時間初凝:1:02

終凝:1:31

自在膨脹率1天0.10%

28天0.23%

淨漿強度(Mpa)1天25.0

28天55.0

2.廠房地坪注漿面積2100平方米,注漿量30000余立方米。

3.注漿要领

灌漿质料加水機械攪拌後,用壓力泵將凍液注入灌漿孔,注漿完畢後將注漿孔封閉。

三、运用结果

用上陆地泾水泥廠生産的GC灌漿质料(地坪專用)進行單液注漿結束後下沈地坪上升恢複原狀(地坪高差小于1cm)第三天地坪可一般运用,安排重達100-150噸的變壓器,至今已注漿加固的廠房地坪經過四個多月的載荷运用,沒有發現下陷現象,用戶反应优越。

這次合肥ABB公司地坪注漿获得予期的优越结果。因为分期分批進行注漿,沒有影響一般死産。上陆地泾水泥廠生産GC灌漿质料是一種無機單液灌漿料,本钱低、強度高、耐久性好、施工轻易、見效快,可作爲地基加固或其他工程部位的灌漿质料。

上海地道地基注漿工程有限公司

GC Grouting Material Application Example in ABB Company

I. Factory building floor case before grouting

ABB Company was a sino-foreigtn joint-venture enterprise which produced large-scale transformers,which was established on the base of Hefei Transformer Factory.The existing factory building was used for production workshop,its floor loading force was small,while ABB Co.produced large-scale transformers,each equipment was 100-150t.As overloading had been undertaken for a long time,the floor was subsidence seriously,the area was up to over 2000 m2,some went down over15cm,which affected production seriously.

II. Floor Grouting Case

Invited by ABB Co last May,out company undertook floor grouting engineering for ABB Co.

1. GC Grouting Material(Special for Floor)produced by shanghai Yangjing Cement Factory was cast by single liquid grouting.The main properties of GC Grouting material were as follows:

1) Condesing time:Primary condensing:1.02

Final condensing:1.31

2) Free expansion rate:1 day 0.1%

28 day 0.23%

3) Net Mortar Srength(Mpa)1day 25.0

3day 36.0

28day 55.0

2. Grouting Area offactory building floor 2100m2,trouting quantity over 30000m3.

3. Grouting Method:

After water was added with grouting material and mixed by machine,the pressure pump was used for casting grouting into grouting holes,after grouting,the grouting hole should be sealed.

Result of use:

GC Grouting material(special for floor)produced by Shanghai Yanjing Cement Factory was cast by single liquid grouting,after grouting the factory building floor returned to the original situation(the floor error was less than 1cm),the 3rd day the floor could be used ,and 100-150t transformers,so far 4 months has passed,any mistakes had not been found,the customer felt it very good.

This Hefei ABB Co.floor grouting achieved good result which we expected.Using separating and batch by batch grouting,so it did not affect the normal production.GC Grouting Material produced by Shanghai Yanjing Cement Factory was a inorganic single liquid grouting material,with low cost,high strength,good durability,convenience construction,and seeing fast result,and it could be used for foundation reinforcement or other engineering grouting material.

Shanghai Tunnel Foundation Grouting Engineering Company,Limited

特快硬混凝土正在大面積施工應用胜利

Express Hard Concrete Large Area Construction Application Successful

由上海市政工程研究院研制的特快硬混凝土正在上海市地道管理處的支撑下,正在洋泾水泥廠的合营下,89年正在上海市打浦路越江地道大面積水泥混凝土路面搶建工程中獲得胜利。

打浦路地道路面因为長期遭到地下水侵蝕,不均勻沈降,忙碌的交通流量及超載等身分的影響,破損面積較大,路面板體破裂嚴重。針對複雜路況,上海市市政工程研究所結合地道的實際情況,改變一样平常路面混凝土的施工工藝,使路面混凝土的平整度、精糙度、強度及耐磨性均達到了應急搶修的要求,完成了2800平方米的路面搶修任務。

特快硬混凝土及其維修技術的研制是市建委針對上海市市政設施現狀下達的科研項目,它的胜利應用填補了水泥混凝土路面快速建補的空缺,其大面積應用已達到天下程度。

特快硬混凝土是采用上陆地泾水泥廠生産的硫鋁酸鹽超早強水泥,並與廠特種水泥應用技術研讨土的易施工性,又彌補了一般混凝土養生期長影響城市交通的缺点。如:可大面積連續澆築,澆後僅養護四小時就能通車(四小時抗壓12.0Mpa抗折2.8Mpa)減少交通忙碌和要塞路段空中施工帶來的影響。

實踐證明,接纳特快硬混凝土維修水泥混凝土路面,其費用遠低于環氧混凝土及其它早強混凝土,具有优越的經濟效益,它的胜利應用也爲市政工程的水泥混凝土路面革新和应用開辟了一條新的途徑具有廣闊的應用远景。

上海市市政工程研究院

上海市地道管理處

上海市城市建築設計院

With the support of Shanghai Tunnel Administration and coordinating of Shanghai Yangjing Cement Factory,the express hard concrete developed by Shanghai Municpai Project Institute was used successfully for emergency large cement concrete road surface repairing engineering of Shanghai Dapu Road Cross-Over Wangpu River Tunnel.

Dapu Road Tunnel road surface was suffered from underground water subsidence,busy traffic and heavy loading,etc.influences,the large area of surface broken and damaged.For the complex road situation,Shanghai Municipal Engineering Institute linked the actual cases of tunnel,the common road surface concrete construction process was changed,to make road surface concrete leverl degree,rough degree and strength as well as wearproof all reached to the requirements of emergency repair,and finished 2,800m2 road surface repair work.

The development of express hard concrete and its maintenance technology was ordered by Shanghai Construction Commission for Shanghai municipal science project,its successful application made up the cement concrete road surface fast repair technology,which large area application has reached to the world level.

The expressed hard concrete is adoptecd by aluminum sulfate superstrong cement produced by Shanghai Yangjing Cement Application Technology institute,and after test and develop,it formed.It not only has easy construction of common cement,but also make up the short of long time concrete protection of common concrete which affected the city traffic.If large continual casting,after 4 hour could open traffic,(4 hours compression pressure 12.0 Mpa,anti-folding 2.8Mpa),it would not affect the city traffic and key road underground construction.

The exampl approve that using express hard concrete to repair cement concrete road surface,the cost was lower than epoxy concrete and other early strong concrete,it had good economic benefit.Its successful application developed a new gold road for cement concrete reform and application of municipal engineering,and it had wide application future.

Shanghai Municipal Engineering Institute

Shanghai Municipal Tunnel Administration

Shanghai City Construction Design Institute

上海虹橋國際機場停機坪混凝土修補報告

Report for Concrete Repair of Shanghai Hongqiao Airport Parking Floor

上海虹橋國際機場停機坪运用頻率較高,又果年久失修基礎不均勻沈降等諸多身分,已出現裂縫剝落、露筋等破損現象,正在混凝土施工縫邊緣破損尤爲嚴重影響了飛機的一般起飛和下降,急需加以建補。因为不克不及封閉機場,只能应用深夜飛機停飛的短暫時間進行施工、搶修、因此要求建補的混凝土正在4h後就能供飛機一般运用。便于事情原來沒有如此超早強的混凝土技術,只能用瀝青混凝土不斷臨時添补,這不僅不克不及徹底解決混凝土破損問題,并且正在炎天瀝青軟化汙染了飛機輪胎,以至濺到機身上,同時停機坪及跑道內也到處是玄色的瀝青陈迹/這不僅引发了國內航空公司的不滿,并且國中航空公司也故意見。針對這種情況我們应用上陆地泾水泥廠研制死産的硫鋁酸鹽超早強水泥,進行修補試點工程,並且与得了胜利。正在此基礎上于1989年7月-10月,应用深夜飛機停飛的6-7小時時間對混凝土停機坪進行修缮,混凝土修補量約70立方米,修補面積500多平方米,别的還搶修了兩塊5x5m的大塊混凝土。停機坪破壞的混凝土建複,確保了飛機的一般运用。

超早強混凝土机能
環境溫度℃ 初凝時間(分)
Primary condcnsing time
抗壓強度(Mpa)
Compression pressure strength(Mpa)
新舊砼清合後
抗拉強度
(Mpa)
4h 8h 1d 28d
20℃ ≥20 20.4 26.2 33.6 41.6 2.1

上海市建築科學研究院

The parking Floor of Shanghai Hongqiao Airport had not been repair for many years.The foundation Homeogeneous subsidence,cracks and reinforced steel were appeared.Around the concrete construction,the cracks are even serious,mit affected the airplanes launching and landing,and needed to be rpaired at once.As the airport could not be closed,only used the stoppong flying short time to construct and repair,so it required us that the repairing concrete had to be used in 4 hours for airplane flying.But originally,we had not such kind of superstrong concrete technology,onsy used asphalt concrete to fill it as temporary filling.This could not solved concrete damaged problem,asphalt soften polluted the airplane tires,event to eh plane body.At the same time,floor and running road were also suffered from blace asphalt.This not only caused internal airline company unsatisafction,but also the external airline opinions.For such kind of cases,we used aluminum sulfate superstrong cement developed and produced by Shanghai Ynagjian Cement Factory.The superstrong cement was tested by institute for repairing,it was successful.On the base of this,from July to Oct.,1989,using 6-7 hours at night without flying,we repaired the concrete floor.The repairing quantity was about 70m3,and repairing area was about 50052.In addition,we also repaired two pieces of 5x5large block concrete.The recovery of stopping plane floor damaged concrete ensured the airplanes flew smoothly.

Shanghai Architecture Science Research Institute.

地基加固二次灌漿的無收縮灌漿质料

GC625無收縮灌漿质料正在上海黃浦江(南京路~東方明珠)行人觀光地道工程新工程SK系統應用情況實例。

一、注漿前行人觀光地道工程SK系統的情況

上海黃浦江行人觀光地道新交通SK系統共設浦東和浦西兩個車站,車站間距離約爲650米,其運行車輛爲單獨的無動力型車輛,車輛能够通過回轉纜索上的夾緊裝置由纜索驅動大概通過流动正在軌讲之間的驅動輪摩擦驅動。這種將高空纜車系統應用于地道中的新型軌讲交通系統,是由法國SYSTRA公司研制的設備。根據法方技術要求,SK系統轉道流动支撐墩和别的主要設備的地基加固需進行二次灌漿,要求接纳一種無收縮水泥灌漿质料,质料應具有漿液流動性好、結石強度高、無收縮性、無毒無害、不汙染環境等特點。

二、地基加固二次灌漿情況

正在上海地道工程股份有限公司總承包的黃浦江行人觀光地道工程中,我單位承擔了个中新交通SK系統的設備安裝工程。

1.采用上陆地泾水泥廠生産的GC625灌漿质料進止SK系統軌道流动支撐墩和主要設備地基加固二次灌漿。

GC625灌漿质料的主要性能:

1)砂漿合营比: GC625灌將质料:粗砂:火=1:1.5:0.38

2)初凝時間:1h30min 終凝時間:2h25min

3)流動度>500mm(自流仄)

4)強度3d抗壓強度61.3Mpa 抗折強度9.1Mpa 28d抗壓強度可達75Mpa以上

5)自在膨脹率(%) 3d0.0828d<0.20 2.注漿要领 根據配比灌漿质料加水機械攪拌後,將漿液注入灌漿孔,注漿完畢後注漿孔封閉。

三、运用结果

用上陆地泾水泥廠生産的GC625灌漿质料,正在SK系統軌道流动支撐墩和主要設備的地基加固二次灌漿後,經過測試机能達到設計要求,获得預期优越结果,因为分期分批灌漿,本钱低、強度高、耐久性好、施工又轻易、見效快,並遭到法國SYSTRA公司專家的好評,可作爲地基加固的灌漿质料。

單位名稱:上海地道股份有限公司機械廠SK系統項目組

2017.com

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