The effect of high curing temperature on the reaction kinetics in MK/lime and MK-blended cement matrices at 60 °C

Corrosion of aluminium and magnesium in BFS composite cements

“…This was most likely associated with the changes in both the crystallinity and amount of the Al(OH) 3 present in the sample; more crystalline material tends to decompose at higher temperatures. The Al(OH) 3 peak for the aluminium corrosion products in OPC had a shoulder at y320uC which could be a hydrogarnet type peak, 14,15 although this phase was not identified by XRD, which may be because the phase is poorly crystalline. Strä tlingite peaks, although quite small, were observed at y220uC.…”

Paper sludge, an environmentally sound alternative source of MK-based cementitious materials. A review

“…Kaolinite, the mineralogical term for hydrated aluminium silicate, is the main constituent of kaolin. According to Rashad [46], kaolin is fairly stable under normal environmental conditions; when heated to high temperatures, however, the phyllosilicate structure breaks down, yielding an amorphous product (metakaolinite) with good pozzolanic properties suitable for use as a supplementary cementitious material [46][47][48][49][50][51][52][53][54].…”

Influence of different types of water on strength, porosity and hydric parameters of metakaolin admixtured cement

“…Moreover, SW treated cement paste acquires lesser densification of the matrices compared to DW cement paste. The reduction of strength associated with the use of SW may be attributed to efflorescence with a subsequent increase in porosity as well as increased crystallization Ca(OH) 2 .…”

“…The setting behavior plays a significant role in scheduling various stages of the construction process such as transporting, placing, compacting and finishing, and also determines whether the cement is of set-accelerating or set-retarding nature. The mechanisms of cement hydration and the pozzolanic reactivity of MK have been explained by a number of authors using DTA, XRD, SEM, FTIR and electrical conductivity measurements [2][3][4][5][6]. Further, porosity and hydric test measurements are arguably the most important components of the microstructure of cement paste.…”