A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Thaumasite form of sulfate attack in limestone cement mortars: A study on long term efficiency of mineral admixtures
AbstractConcrete and mortar made from limestone cement may exhibit a lack of durability due to the formation of thaumasite. The addition of minerals that improve the concrete durability is expected to slow down the formation of thaumasite. In this work the effect of natural pozzolana, fly ash, ground granulated blastfurnace slag and metakaolin on the thaumasite formation in limestone cement mortar is examined. A limestone cement, containing 15% w/w limestone, was used. Mortar specimens were prepared by replacing a part of limestone cement with the above minerals. The specimens were immersed in a 1.8% MgSO4 solution and cured at 5 and 25°C. The status of the samples after a storage period of 5 years was reported based on visual inspection, compressive strength, mass measurements, ultrasonic pulse velocity measurements and analytical techniques. It is concluded that the use of specific minerals, as partial replacement of cement, inhibits thaumasite formation in limestone cement mortar.
Thaumasite form of sulfate attack in limestone cement mortars: A study on long term efficiency of mineral admixtures
AbstractConcrete and mortar made from limestone cement may exhibit a lack of durability due to the formation of thaumasite. The addition of minerals that improve the concrete durability is expected to slow down the formation of thaumasite. In this work the effect of natural pozzolana, fly ash, ground granulated blastfurnace slag and metakaolin on the thaumasite formation in limestone cement mortar is examined. A limestone cement, containing 15% w/w limestone, was used. Mortar specimens were prepared by replacing a part of limestone cement with the above minerals. The specimens were immersed in a 1.8% MgSO4 solution and cured at 5 and 25°C. The status of the samples after a storage period of 5 years was reported based on visual inspection, compressive strength, mass measurements, ultrasonic pulse velocity measurements and analytical techniques. It is concluded that the use of specific minerals, as partial replacement of cement, inhibits thaumasite formation in limestone cement mortar.
Thaumasite form of sulfate attack in limestone cement mortars: A study on long term efficiency of mineral admixtures
Skaropoulou, A. (author) / Tsivilis, S. (author) / Kakali, G. (author) / Sharp, J.H. (author) / Swamy, R.N. (author)
Construction and Building Materials ; 23 ; 2338-2345
2008-11-04
8 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2009
Effects of Mineral Admixtures on Thaumasite Form of Sulfate Attack of Cement Mortars
| British Library Online Contents | 2006