Addition of metakaoline to portland cement, influence on hydration and properties of cement-bonded wood composites

摘要

The hydration times and hydration temperatures at 20deg.c are determined according to Sandermann and Kohler (1964). The equipment used to measure hydration times at 83 dge.c has been described somewhere else(Simatupang et al.1995). Circular cement-bonded particleboards specimens with a diameter of rive cm and target thickness of 12 mm were made from larch or poplar wood particles. Each specimens with from 6.3g(oven dry) wood particles. 18.9 g binder and an effective water/binder ratio of 0.40(Simatupang 1973).