氮吸附法研究早期磷铝酸盐浆体的孔结构

Research of Pore Structure of Young Phosphoaluminate Paste Using Nitrogen Adsorption Isotherm

以吸附-凝聚理论为基础,利用氮吸附法(BET)对早期磷铝酸盐水泥(PAC)浆体的孔结构进行了测试研究,通过不同水灰比、不同龄期硬化PAC浆体的等温吸附曲线及吸附回线的线型,分析了其氮吸附特点,并根据孔比表面积和孔分布等孔结构参数,对其早期微观结构进行了分析.

Pore structure of yOung paste was tested with nitrogen adsorption method based on adsorption- condensation theory. The nitrogen adsorption characteristic of young PAC paste according to linetype of adsorption isotherm and adsorption loop of different mw/mc （water-cement ratio） and hydration ages was made clear. Parameters of pore structure, such as porosity, specific surface area and pore distribution, etc. were determined. The partial development law of micro structure of young PAC paste is established.