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低堿度硫鋁酸鹽水泥

放大字體  縮小字體 發(fā)布日期:2009-01-19  來源:中國混凝土網  作者:中國混凝土網
核心提示:低堿度硫鋁酸鹽水泥

一、主要品質指標: Main quality indexes

項目 Ltems

指標 Index

細度 Fineness

比表面積不低于 40 0 ㎡ / ㎏
Specific surface area is no less than 430 ㎡ / ㎏

凝結時間性
Coagulation time

初凝不早于 25min ,終凝不遲于 180min
Initial coagulation is no earlier than 25min, and final 180 min

堿度
Alkalinity

1h 的 PH 值小于 10.5
PH at 1h is less than 10.5

自由膨脹率
Free expansivity

28 天自由膨脹率小于 0.15%

Free expansivity si no lea than 0.15% in 28 days

強度
Strength

強度等級
Strength grade

抗壓強度
Compressive strength

抗折強度
Rupture strength

 

1d

7d

1d

7d

42.5

32.0

42.5

4.0

5.5

注:凝結時間,用戶要求時可以變動。(專門配備生產速凝劑、緩凝劑)執(zhí)行標準: JC/T65 9 - 2003

Coagulation time, adjustable if required by clients

二、特性
  
有快硬水泥的早強特性,又有堿低,膨脹率低,穩(wěn)定期短,干縮率小的優(yōu)點。與玻璃纖維復合強度保留率高,使用壽命長,是 GRC 制品的專用產品。

Characteristic
  
It has early strength characteristics of fast hard cement and low alkalinity, low expansivity and short steady period as well as little dry shrinkage. And it has also high compound strength with fiberglass and it has a longer service life and is a special product for GRC product.

三、用途
  
用于生產輕質內外復合墻板,波瓦、網架板、通風道、歐式浮雕各種構件,建筑小品等 GRC 制品。

Usage
  
Used in production of GRC product such as light endosaro and outer compound wall plate, ripple tile, net frame plate, ventilation stack and various components of European basso-relievo and small buildings.

四、包裝貯運
  
袋裝水泥每袋凈重 5 0 ㎏,隨機抽取 20 袋,總質量不得少于 1000 ㎏,其他包裝形式由供需雙方商定。在運輸和貯存時,不得受潮和混入雜物,不得與其他水泥混雜貯存。貯存期為三個月,過期應重新測試合格后再使用。

Packaging, storage and transport:
  
The cement is packed in bags with a net weight of 50 ㎏ each, random sampling of 20 bags, the total weight is no less than 1000 ㎏ , and other forms of packaging are to be decided by the supply and dem and parties. In transport and storage special attention should be pais to guard against dampness, agglomeration, and mixture of other types. The shelf life of the products is 3 months, of the time limit is exceeded, it should be rechecked to ensure that it is qualified before use.

五、注意事項
  
攪和好的物料一定要控制在 20min 內用完。拌和料失去流動性后,不得第二次加水拌合再使用。水泥制成品應在 2h 內即灑水養(yǎng)護,養(yǎng)護期不少于三天。冬季施工時,要注意防寒措施,必要時加適量亞硝酸納,要進行蓄熱養(yǎng)護。

Cautions
  
Mixed cements must be used up in 1.5h. After loss of fluidity of the mixed cements, it is not permitted to add water for the second time to use. As to the finished cement products. sp-rinkling to maintain after 2h, and the maintenance period is no less than 3 days. When constructing in winter, measures to guard against cold should be taken and add proper nitrite if necessary and it is necessary to store warmth to maintain

 
 
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