A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Degradation of lime-pozzolan mortar exposed to dry deposition of $ SO_{2} $ pollutant gas: Influence of curring temperature
Abstract The reaction of lime-pozzolan mortars with $ SO_{2} $ gaseous pollutant using laboratory exposure chambers, with realistic presentation rates of pollutants, has been examined. Two different curing temperatures were used in order to promote microstructural alteration in the lime-pozzolan mortars. However, independent of curing temperature, the calcium aluminate hydrated phase formed in the hydration reaction of the pozzolan mortar was $ C_{3} $$ AS_{2} $$ H_{2} $. For dry deposition of $ SO_{2} $ pollutant gas, the important roles of water and water plus oxidant in increasing loss of calcium from the carbonate component in the mortar are revealed, with little influence on the processes of the curing temperature of mortar. For the lime-pozzolan mortars exposed to $ SO_{2} $ in the additional presence of oxidant and water, the extent of chemical reaction of the mortar with the low pH surface water was about 80 times greater than that in the presence of $ SO_{2} $ alone.
Degradation of lime-pozzolan mortar exposed to dry deposition of $ SO_{2} $ pollutant gas: Influence of curring temperature
Abstract The reaction of lime-pozzolan mortars with $ SO_{2} $ gaseous pollutant using laboratory exposure chambers, with realistic presentation rates of pollutants, has been examined. Two different curing temperatures were used in order to promote microstructural alteration in the lime-pozzolan mortars. However, independent of curing temperature, the calcium aluminate hydrated phase formed in the hydration reaction of the pozzolan mortar was $ C_{3} $$ AS_{2} $$ H_{2} $. For dry deposition of $ SO_{2} $ pollutant gas, the important roles of water and water plus oxidant in increasing loss of calcium from the carbonate component in the mortar are revealed, with little influence on the processes of the curing temperature of mortar. For the lime-pozzolan mortars exposed to $ SO_{2} $ in the additional presence of oxidant and water, the extent of chemical reaction of the mortar with the low pH surface water was about 80 times greater than that in the presence of $ SO_{2} $ alone.
Degradation of lime-pozzolan mortar exposed to dry deposition of $ SO_{2} $ pollutant gas: Influence of curring temperature
Martinez-Ramirez, S. (author) / Thompson, G. E. (author)
1999
Article (Journal)
English
| British Library Online Contents | 1999
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