Influence of Mineral Additions in the Inhibition of Delayed Ettringite Formation in Cement based Materials – A Microstructural Characterization
type: Dataset
description: The degradation of concrete structures caused by delayed ettringite formation (DEF) is aproblem that affects many concrete structures worldwide [1]. This pathology is due to the formation of expansive ettringite inside the material and is very difficult to deal with, because presently there is no efficient method to repair concrete structures affected by DEF. Hence, there is an urgent need to find preventive methods that may enable the inhibition of DEF in new constructions. This paper presents the findings of a long-term study [2,3] on the expansion rate and microstructure of heat-cured concretes with different amounts of mineral additions, like fly ash, metakaolin, ground granulated blast-furnace slag, silica fume and limestone filler. For this purpose different concrete compositions were produced using the same binder, water/binder (w/b) ratios and aggregate type. The concretes were prepared and subjected to a heat-curing cycle and subsequently to two drying-humidification cycles. After these cycles the concrete specimens were immersed in water for long-term storage at 20 ± 2ºC. Length changes of specimens were measured at regular intervals. The microstructures of old heat curing specimens were investigated by optical microscopy and SEM-EDS analysis. The results of the blended-concrete compositions were compared with control compositions, and the conclusions were extracted.
issued: 2026-05-05T12:43:06.638427
language: en
modified: 2026-05-05T12:43:06.638432
contact point: Organization
  fn: CCSD
keyword: cendre-volante
keyword: chimmatechemical-sciencesmaterial-chemistry
keyword: ciment
keyword: infoeu-reposemanticsarticle
keyword: journal-articles
keyword: laitier
keyword: microscope-electronique-a-balayage
keyword: spimatengineering-sciences-physicsmaterials
landing page: 0255-5476

Influence of Mineral Additions in the Inhibition of Delayed Ettringite Formation in Cement based Materials – A Microstructural Characterization
type: Distribution
format: HTML
issued: 2026-05-05T12:43:06.644682
modified: 2026-05-05T12:43:06.629449
access URL: https://hal.science/hal-00985039

test_moissonnage_selune
type: Agent