Thermogravimetric analyses and mineralogical study of polymer modified mortar with silica fume

Abstract

Mineral and organic additions are often used in mortars to improve their properties. Microstructural investigation concerning the effects of styrene acrylic polymer and silica fume on the mineralogical composition of high-early-strength portland cement pastes after 28 days of hydration are presented in this paper. Thermogravimetry and derivative thermogravimetry were used to study the interaction between polymers and cement, as well as the extent of pozzolanic reaction of the mortars with silica fume. Differential scanning calorimetry and X ray diffraction were used to investigate the cement hydration and the effect of the additions. The results showed that the addition of silica fume and polymer reduces the portlandite formation due to delaying of Portland cement hydration and pozzolanic reaction

Characterization of novel shape‐stabilized phase change material mortar: Portland cement containing Na 2 SO 4 ·10H 2 O and fly ash for energy‐efficient building

“…As the temperature was continued to increase, the TG‐DSC curves of PCM mortar and ordinary mortar were almost the same. The weight loss near 450°C came from the decomposition of Ca (OH) 2 . Hence, the addition of the PCM only increased the amount of water loss in the early stage of the heating process; it has no negative effect on the high temperature thermal stability of the mortar.…”

Pozzolanic effect of porcelain polishing residue in Portland cement

“…This was determined by mass loss between 420 C and 520 C (TGA curve), regarding dehydroxylation of calcium hydroxide (Almeida et al, 2006). TGA was only performed for CP-V cement (pure) at PPR substitutions of 0%, 10% and 20%.…”

Thermal, mineralogical, and microstructural characterizations of irradiated polymer blended cement mortar composites

“…Thermal analysis of SAE‐NCC‐blended cement mortar composite studies using thermograms revealed the nature of reactions occurring in the polymer cement mortar composites and hydrated cement mortar at various decomposition temperatures. Using the thermogravimetric curves a comparison of the significant losses of their weight was made . In Figures , the thermal analysis peaks of blended cement mortar containing 5 and 10% of NCC particles were investigated.…”