摻料

(Admixture)

摻料

定義: 摻料為一種除了水、骨材粒料、水泥基材料與鋼纖維等基本材料外，在拌和前或拌和中所添加的一種其他材料，用以改善新拌混凝土或硬固混凝土的性質，包括新拌混凝土工作性質、凝結時間與硬固特性等。

摻料於每批次生產前或過程中添加，大部分的化學摻料用於改變混凝土新拌與硬固性質，而水、骨材、水泥基材料(卜作蘭材料與水硬性水泥[飛灰、矽灰、爐石水泥])與鋼纖維等材料並非屬於摻料的種類。

化學摻料的種類包含:輸氣劑、速凝劑、緩凝劑、減水劑(一般與中度) 、高性能減水劑，以及特殊目的的摻料如顏料、腐蝕抑制劑、乾縮抑制劑、流動性混凝土摻料、冬季混凝土摻料與助泵劑等。

 

Admixture

Definition: a material other than water, aggregates, cementitious materials, and fiber reinforcement, used as an ingredient of a cementitious mixture to modify its freshly mixed, setting, or hardened properties and that is added to the batch before or during its mixing.

Admixtures are materials added to concrete before or during mixing. Most admixtures are chemicals that change some property of the fresh or hardened concrete. Water, aggregates, cementitious materials (pozzolans and hydraulic cements [fly ash, silica fume, slag cement]), and fiber reinforcement are not considered admixtures. 

Types of chemical admixtures include: air-entraining admixtures; accelerating admixtures; retarding admixtures; water-reducing admixtures (normal and mid-range); high-range water-reducing admixtures; and special-purpose admixtures such as pigments, corrosion inhibitors, shrinkage reducers, admixtures for producing flowing concrete, cold-weather admixtures, and pumping aids.