我廠專業供应十余個品種的特種水泥,包孕︰U型、S型超細水泥、GC灌漿质料、S型瞬凝水泥、BISO無收縮水泥、混凝土快速修補砂漿、L型混凝土快速修補劑等新品種

硫鋁酸鹽超早強水泥

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主要用途︰快速施工突擊搶修抗滲堵漏修補構件

Fastspeedconstruction,emergencycapitalrepair,antiseepandleakingstoppageandrepairstructures

一、簡介

超早強水泥具有︰凝結時間快、晚期強度高、微膨脹、負溫机能好、抗硫酸鹽侵蝕等優良特性。正在適當選用減水劑(或緩凝劑)及水灰比條件下,能滿足混凝土機械化施工要求,這種水泥力學強度超前發揮于晚期,能够大大减速施工進度,對一些爭分奪秒,搶時間的緊慢工程尤為適應。同時,因为該水泥具有微膨脹特性,可用于配制補償收縮混凝土,裝配式鋼筋混凝土構件板柱漿錨,管道與鑽孔的封閉作業,認及地道涵洞、天鐵口岸、公路橋梁、機場跑道和混凝土建築物的加固建補等。

二、品質指標

1、細度︰0.080mm方孔篩篩余不超過10%

2、凝結時間︰

初凝︰不小于5分鐘︰

終凝︰不大于40分鐘;

3、強度(按GB177進行,見下表)

三、运用注重事項

1、超早強水泥凝結塊,配制砂漿或混凝土時,應正在落空塑性之前用完。每批拌和數量要適量,隨拌隨用。攪拌天點要盡量接近澆注現場,事先要充裕準備,明確合作,操纵要快,有條不紊。

2、如非突擊性工程需求延長操纵時間,為改进混凝土或砂漿的流動性,可摻加減水劑或緩凝劑,常用減水劑有SN-II,木質磺酸鈣等,常用緩凝劑有酒石酸、檸檬酸等,其摻量由試驗確定。

3、超早強水泥水灰比調幅較寬。當水灰比下時,雖然仍能固化,但將影響凝固時間,強度和膨脹机能一般發揮。因而,應根據具體性況確定合適的水灰比。

4、因为硫鋁酸鹽礦物水化速度快,加水後立刻進止水化反應构成新的水化物,正在混凝土或砂漿拌和時,要一次加水完畢,切忌半途加水。

5、超早強水泥加水拌後粘度較大,施工時須用機械振搗密實,防备構件出現峰窩與孔洞。

6、超早強水泥澆注的混凝土構件和水泥制品,應加強養護,澆注完畢後要立刻覆蓋潤濕的草包之類吸水质料,连结構件表面濕潤,養護24小時。纵然已經啟用,正在1-3天內也需繼續適當養護,防备烈日曝曬。

7、超早強水泥寄存期為3個月,水泥倉庫必須枯燥,防备受潮。

I. Introduction
The super strong cement has fast condensation,high strength in early period,light expansion,good negative temperature feather,anti-sulfate erosion,etc.good characteristics.Under the condition of selecting water-reducing agcnt(or buffer)and water & dust proportion,it can be satisfied with the requirements of concrete machinery construction,This kind of cement mechanical strength is at the early period,so as to speced up the progress of construction.It is very suitable with the emergcncy expansion feature,it can be used for prepaing complement contract cement,also a desire material for stopping gush and leaking stoppage.It is widely used for defense tasks and emergency construction,large-scale foundations and burying hole grouting,fast installation,waterproof coating layer of underground architecture,mortar anchors of assembly type reinforcement concrete structure boards and columns,sealing operations of piping and drilling holes,tunnel holes,metro & harbor,highway bridges,airport runing road,and reinforcement strengthening repair,etc.emergcncy enginecrings.

II. Desired quality
1. Fineness:0.080mm square hole is less than 10%
2. Condeusing time:
Primary Condensing:not less than 5min.
Final Condensing:not more than 40min;

III.Attention Items for Use
1. Sperstrong cement condensartion is very fast,when preparing mortar or conerete,it should be finished before loosing plastic feature.So each batch should mix certain quantily,when using,it can be mixed The mixing place should be ner the casing site.At first,everything should be prepared,distribution should be clearly,the operation should be fast,it should be in order.
2. If it is not an emergency engineering which needs to delay the operation time for improving the flowability of concrete or mortar,the water reducing agent or buffer can be added,the common water reducing agent has SN-11,wooden sulphonic acid calcium,etc,the common buffer has taitaric acid and citric acid,etc.,the quantity of which should be decided according to the experiments.
3. Superstrong cement water & dust proportion has wide modulation.when water and dust proportion is too high,it can harden,but h condensing time,strength and expansion will be affected,so the proper water & dust proportion should be determined according to the experiments.
4. As the aluminum sulfate mineral water hydrates very fast,the hydrating reaction will happen at once to form hydrate after adding water,when mixing concrete of mortar,it should be finished once,it can not be added with water in the middle of mixing.
5. The viscosity is bigger after superstrong cemetn mixed with water,the vibrating work should be done by machines during construction,so as to avoid hole in the structures.
6. The concrete structures and cement products made of superstrong cement should be strengthened to protect,after casting,the wet straw bags and other absorbing materials should be covered on it at once to keep the structures out surface moistre,the protection time should be lasted for 24 hours.Even though it has been already used,the protection of it should be kept on within 1 days.not to open in the sunshine.
7. The superstrong cement canbe stored for 3 mnths.the Cement warehcuse shducd be dried soas toavoid moisture.

標號
Name No.
抗壓強度(Mpa)
Compression pressure strength(Mpa)
抗折強度(Mpa)
Anti folding gtrength(Mpa)
4h 8h 1d 4h 8h 1d
超早-20 3.6 12 20 1.4 2.2 3.5
超早-30 10 16 30 1.8 2.6 4.5
超早-40 14 20 40 22 3.0 5.5

  • 構件修補
    構件修補
    Adhesion of Fast Repair
  • 應用于金茂大廈
    應用于金茂大廈
    Used Jinmao Building

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