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

超塑剂主要大量吸附颗粒表面的产物上吸附未颗粒表面。

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.

发现能够产生膨胀的钙矾石由局部学反应所生成；它们未的铝酸盐矿物表面原地结晶，呈放射状生长。