Cavitation Properties of Rendering Mortars with Micro Silica Addition
Abstract
Micro-silica is a highly efficient mineral additive whose role is reflected in improvements of microstructure packing, strength and durability of non-shaped composite building materials such as concrete and mortar. A comparative study of performances of rendering mortars with different quantities of micro silica was conducted. The experimental program included production of reference mortar based on Portland cement and quartz sand (CM) and three mortars with 5, 10, and 15 % addition of micro silica (SCM-5, SCM-10, and SCM-15). The effect that micro silica addition has on the thermal behavior and mechanical properties of mortars was discussed. Hydration mechanisms and thermally induced reactions were studied at temperatures ranging from ambient to 1100 degrees C by differential thermal analysis. The results were supported by X-ray diffraction analysis. The cementing efficiency of micro silica was assessed by cavitation erosion test. The changes in the morphology of mortar samples prior ...and upon cavitation testing were monitored by means of the scanning electron microscope imagining. It was found that 5 % of superfine micro silica (SCM-5 mortar) has positive effects on mechanical strengths (15 % increase in compressive strength) due to microstructure densification arising from the successive filling of voids by the micro silica. Addition of micro silica also improved the cavitation erosion resistance in comparison with reference cement mortar (SCM-5 showed cavitation velocity as low as 0.09 mg/min). This qualifies mortars with micro silica addition as building materials which can be safely employed in potential hydro-demolition environment.
Keywords:
Thermal analysis / Micro-filler / Mechanical properties / Construction materials / CompositesSource:
Science of Sintering, 2021, 53, 4, 445-459Publisher:
- Međunarodni Institut za nauku o sinterovanju, Beograd
Funding / projects:
DOI: 10.2298/SOS2104445T
ISSN: 0350-820X
WoS: 000756037700003
Scopus: 2-s2.0-85124453259
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Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Terzić, Anja AU - Dojčinović, Marina AU - Miličić, Ljiljana AU - Stojanović, Jovica AU - Radojević, Zagorka PY - 2021 UR - http://rims.institutims.rs/handle/123456789/399 AB - Micro-silica is a highly efficient mineral additive whose role is reflected in improvements of microstructure packing, strength and durability of non-shaped composite building materials such as concrete and mortar. A comparative study of performances of rendering mortars with different quantities of micro silica was conducted. The experimental program included production of reference mortar based on Portland cement and quartz sand (CM) and three mortars with 5, 10, and 15 % addition of micro silica (SCM-5, SCM-10, and SCM-15). The effect that micro silica addition has on the thermal behavior and mechanical properties of mortars was discussed. Hydration mechanisms and thermally induced reactions were studied at temperatures ranging from ambient to 1100 degrees C by differential thermal analysis. The results were supported by X-ray diffraction analysis. The cementing efficiency of micro silica was assessed by cavitation erosion test. The changes in the morphology of mortar samples prior and upon cavitation testing were monitored by means of the scanning electron microscope imagining. It was found that 5 % of superfine micro silica (SCM-5 mortar) has positive effects on mechanical strengths (15 % increase in compressive strength) due to microstructure densification arising from the successive filling of voids by the micro silica. Addition of micro silica also improved the cavitation erosion resistance in comparison with reference cement mortar (SCM-5 showed cavitation velocity as low as 0.09 mg/min). This qualifies mortars with micro silica addition as building materials which can be safely employed in potential hydro-demolition environment. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Cavitation Properties of Rendering Mortars with Micro Silica Addition EP - 459 IS - 4 SP - 445 VL - 53 DO - 10.2298/SOS2104445T ER -
@article{ author = "Terzić, Anja and Dojčinović, Marina and Miličić, Ljiljana and Stojanović, Jovica and Radojević, Zagorka", year = "2021", abstract = "Micro-silica is a highly efficient mineral additive whose role is reflected in improvements of microstructure packing, strength and durability of non-shaped composite building materials such as concrete and mortar. A comparative study of performances of rendering mortars with different quantities of micro silica was conducted. The experimental program included production of reference mortar based on Portland cement and quartz sand (CM) and three mortars with 5, 10, and 15 % addition of micro silica (SCM-5, SCM-10, and SCM-15). The effect that micro silica addition has on the thermal behavior and mechanical properties of mortars was discussed. Hydration mechanisms and thermally induced reactions were studied at temperatures ranging from ambient to 1100 degrees C by differential thermal analysis. The results were supported by X-ray diffraction analysis. The cementing efficiency of micro silica was assessed by cavitation erosion test. The changes in the morphology of mortar samples prior and upon cavitation testing were monitored by means of the scanning electron microscope imagining. It was found that 5 % of superfine micro silica (SCM-5 mortar) has positive effects on mechanical strengths (15 % increase in compressive strength) due to microstructure densification arising from the successive filling of voids by the micro silica. Addition of micro silica also improved the cavitation erosion resistance in comparison with reference cement mortar (SCM-5 showed cavitation velocity as low as 0.09 mg/min). This qualifies mortars with micro silica addition as building materials which can be safely employed in potential hydro-demolition environment.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Cavitation Properties of Rendering Mortars with Micro Silica Addition", pages = "459-445", number = "4", volume = "53", doi = "10.2298/SOS2104445T" }
Terzić, A., Dojčinović, M., Miličić, L., Stojanović, J.,& Radojević, Z.. (2021). Cavitation Properties of Rendering Mortars with Micro Silica Addition. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 53(4), 445-459. https://doi.org/10.2298/SOS2104445T
Terzić A, Dojčinović M, Miličić L, Stojanović J, Radojević Z. Cavitation Properties of Rendering Mortars with Micro Silica Addition. in Science of Sintering. 2021;53(4):445-459. doi:10.2298/SOS2104445T .
Terzić, Anja, Dojčinović, Marina, Miličić, Ljiljana, Stojanović, Jovica, Radojević, Zagorka, "Cavitation Properties of Rendering Mortars with Micro Silica Addition" in Science of Sintering, 53, no. 4 (2021):445-459, https://doi.org/10.2298/SOS2104445T . .