Superplasticizer mainly absorbs on the cement hydrates covering the surface of cement particles instead of on the surface of unhydrated particles.

超塑剂主要是大量吸附泥颗粒表产物上而不是吸附未泥颗粒表。

It is shown that expansible ettringite forms in the topochemical reaction,and crystallizes in-situ on the surface of unhydrated aluminate minerals and orients radially.

能够产生膨胀钙矾石是由局部学反应所生成；它们未铝酸盐矿物表原地结晶，呈放射状生长。