Experimental Study on Engineering and Thermal Properties of Mortar and Plaster Produced With Pumice Aggregate

Abstract

Now, it is widely accepted by civil engineers and architects that walls and masonry building units, which are made of pumice, can insulate buildings against both heat and sound, and also reduce the dead load of the building compared to traditional buildings. In this study, pumice was used as a fine aggregate in mortar and plaster instead of traditional crushed limestone sand. This study shows that the properties of pumice mortars indicate lower values compared to limestone mortars for workability durations, time of settings, and fresh and hardened unit weights. Other properties of pumice mortars indicate higher values compared to limestone mortars, such as water absorption, coefficient of capillary water absorption, drying shrinkage, flexural strength, and compressive strength. Also, wall systems made with pumice mortar and plaster show significant benefits in terms of thermal conductivity.

Desenvolvimento De Argamassa Termoisolante Para Revestimento De Paredes De Alvenaria Em Edificações Com Uso De Areia De Britagem E Vermiculita

“…A argamassa de revestimento isolante pode ser adotada em substituição à argamassa convencional das edificações e é comum o uso de agregados leves, como o poliestireno expandido (4) , vidro expandido (5) e pedra-pomes (6) , para conferir menor condutividade ao material, além de incorporação de ar com aditivos.…”

Engineering Properties of Fiber Cementitious Materials

“…It was also reported that combination of silica fume with steel fibers effectively enhanced the compressive strength, splitting tensile strength, surface abrasion and impact resistance of cementitious materials [8]. Addition of silica fume in fiber cementitious materials would improve the concrete properties [8] and is beneficial for fiber dispersion [9][10]. This study was aimed to evaluate the amount of silica fume addition and volume fraction of steel fiber on the engineering properties of cementitious materials.…”