我厂专业供应十余个种类的特种水泥,包孕:U型、S型超细水泥、GC灌浆质料、S型瞬凝水泥、BISO无膨胀水泥、混凝土快速修补沙浆、L型混凝土快速修补剂等新品种
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硫铝酸盐超早强水泥

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主要用途:快速施工突击抢修抗渗堵漏修补构件

Fastspeedconstruction,emergencycapitalrepair,antiseepandleakingstoppageandrepairstructures

一、简介

超早强水泥具有:凝聚工夫快、晚期强度下、微收缩、背温机能好、抗硫酸盐腐蚀等优秀特性。正在恰当选用加水剂(或缓凝剂)及水灰比条件下,能知足混凝土机械化施工要求,这类水泥力学强度超前施展于晚期,能够大大减速施工进度,对一些分秒必争,抢时间的紧要工程尤其顺应。同时,因为该水泥具有微收缩特性,可用于配制赔偿膨胀混凝土,装配式钢筋混凝土构件板柱浆锚,管道取钻孔的关闭功课,认及地道涵洞、地铁口岸、公路桥梁、机场跑道和混凝土建筑物的加固修补等。

二、品格目标

1、细度:0.080mm方孔筛筛余不超过10%

2、凝聚工夫:

初凝:不小于5分钟:

终凝:不大于40分钟;

3、强度(按GB177停止,见下表)

三、运用注意事项

1、超早强水泥凝聚块,配制沙浆或混凝土时,应正在落空塑性之前用完。每批拌和数目要适当,随拌随用。搅拌所在要只管接近浇注现场,事先要充裕预备,明白合作,操纵要快,杂乱无章。

2、如非突击性工程需求延伸操纵工夫,为改进混凝土或沙浆的流动性,可掺加减水剂或缓凝剂,常用加水剂有SN-II,木质磺酸钙等,常用缓凝剂有酒石酸、柠檬酸等,其掺量由实验肯定。

3、超早强水泥水灰比调幅较宽。当水灰比下时,固然仍能固化,但将影响凝固时间,强度和收缩机能一般施展。因而,应凭据具体性况肯定适宜的水灰比。

4、因为硫铝酸盐矿物水化速度快,加水后立刻停止水化回响反映构成新的水化物,正在混凝土或沙浆拌和时,要一次加水终了,切忌半途加水。

5、超早强水泥加水拌后粘度较大,施工时须用机器振捣密实,防备构件泛起峰窝取孔洞。

6、超早强水泥浇注的混凝土构件和水泥制品,应增强养护,浇注终了后要立刻掩盖润湿的草包之类吸水质料,连结构件表面潮湿,养护24小时。纵然曾经启用,正在1-3天内也需继承恰当养护,防备烈日曝晒。

7、超早强水泥寄存期为3个月,水泥堆栈必需枯燥,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.

标号
Name No.
抗压强度(Mpa)
Compression pressure strength(Mpa)
抗合强度(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

  • 构件修补
    构件修补
    Adhesion of Fast Repair
  • 应用于金茂大厦
    应用于金茂大厦
    Used Jinmao Building

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