On the Cutting Edge: Our five most recent scientific contributions.
The effects of Portland clinker and calcined clay (CC) mineralogy on the hydration of limestone calcined clay cement (LC 3 ) were investigated. Three clinkers with high/low C 3 S and C 3 A contents were combined with three CCs with different kaolinite contents (47, 80, and 98%). Comprehensive CC characterization, isothermal calorimetry, synchrotron and…
Predicting the performance of superplasticizers in modern blended cements remains a “black box” due to the complex physico-chemical interactions between polymers and heterogeneous mineral surfaces. This study deconstructs the timeline of admixture function in blends of Ordinary Portland Cement (OPC) and Limestone (LS) through three integrated quantitative approaches: the “Direct and Delayed Dosing” (D3) methodology…
AbstractThe natural carbonation of a range of blended cements was studied up to 12 years. The carbonation rate depends primarily on CaOreactive content. The carbonation of ordinary Portland cement (OPC) at two water/cement ratios (0.40 and 0.50) indicates that the available water filled space, rather than a barrier layers on portlandite is the major factor limiting…
The authors regret that in the original publication of the aforementioned article, the data points in Fig. 16 were plotted with x and y coordinates inverted. In the original Fig. 16 (a–d), the experimental data for the relative hydration velocity (v/v₀) was plotted on the x-axis rather than the y-axis, while the calculated surface coverage…
AbstractA portion of chloride salt is usually introduced to improve the early strength of slag cement, but it increases the possibility of chloride corrosion. This study investigates the effect of diethanol-isopropanolamine (DEIPA) on the chloride distribution and mechanical strength in a high-volume slag cement (HVSC) system containing 60wt.% slag and 1.11wt.% NaCl. In the absence…