Quantitative determination of composition of quaternary cementitious materials

Based on the principle of ENV 196-4 “Methods of testing cement — Part 4: Quantitative determination of constituents” or Chinese Standard GB/12960-2007 “Quantitative measurement of mineral admixtures in cement”, methods were developed for quantitative determination of fly ash, slag and limestone powder in fresh cement pastes, mortars and concretes. Limestone powder was determined using thermal analysis method. The residue content of fly ash on an 80-um sieve, and silt contents of aggregate were also considered during the quantitative determination of mineral composition of quaternary cementitious system. With the developed methods, the deviations between the measured and the actual mineral contents of the constituent in the cementitious material in fresh cement paste, mortar and concrete, were within 3%.