Concrete
has an intricate pore structure comprising pores and voids. Pore fluid
analysis has shown* its usefulness for the understanding of concrete
durability issues related to:
alkali binding as it affects alkali–silica reaction (ASR)
chloride-binding as it affects reinforcement corrosion resistance
delayed ettringite formation (DEF)
The
pore solution of concrete specimen can be extracted by high-pressure
squeezing. In this way, CAD Instruments developed a special steel die to
achieve extraction on concrete samples, named OpiCAD(混凝土孔隙流体抽取仪).
混凝土孔隙流体抽取仪技术指标:
Characteristics
Up to 1 000 MPa
Allows extraction of 9 months aged samples
Easy extraction of the piston after use
* Advances in Cement Research, 22 (4), October 2010, pp. 203 –210