The equivalent performance to Portland cement materials is one target for these cements, but, in many cases, the properties of alkali-activated cements actually are superior. It is important for assuring long-term durability to characterize more fully the complex solid phases, including determining ...
The success of ordinary Portland cement (OPC) comes at a risk to the environment because of the large carbon dioxide emissions associated with cement manufacturing. This has led the scientific community to look for alternative cementitious materials with lower environmental impact. Alkali activated ...
31, VozdukhoflotskiiProspect,POBox161Kiev03037,Ukraine) Abstract:Thealkali—activatedcementscanbeclassifiedintofivecategoriesbasedonthecompositionofthecementingcompo— nent(s):1)Alkali—activatedslag—basedcements;2)Alkali—activatedPortlandblendedcements;3)Alkali—activatedpozzolancements;4) Alkali—activatedlime...
This research focuses on the study of the stabilisation/solidification capacity of a cementing matrix, which has been made using alkali activation of fly ash, in the presence of toxic elements chromium and lead. Such capacity has been compared with that of Portland cement. Leaching tests carried ...
(1) alkali activated slag cement; (2) alkali activated portland-slag cement; (3) alkali activated fly ash-slag cement; (4) alkali activated pozzolana-lime cement; (5) alkali activated pozzolana cement. The activators involved are NaOH, KOH; Nasb2SOsb4;\ Nasb2COsb3;\ CaSOsb4, and soluble...
The alkali-activated slag cement is prepared from, by weight, 40%-60% of clinkers, 25%-40% of mineral powder, 3%-15% of gypsum, 5%-12% of auxiliary materials and 0.02%-0.10% of excitant, wherein the auxiliary materials are coal ash and limestone, and the excitant is a mixture of ...
This paper discussed the use of alkali activated slag cement (AASC)to solidify high level radioactive waste liquid,combining with present research situation of internal and external. 从这三个方面出发,通过对碱矿渣水泥固化高放废液的研究,并结合国内外水泥固化高放废液的研究现状,初步分析和阐述了碱矿渣水...
However, the production of Portland cement is considered a complex and highly intensive process as far as energy is concerned, from the use of raw materials to the production and grinding of clinker. Additionally, the cement industry is considered one of the industries that emit larger amounts ...
Essential topics include:- raw materials and their properties for the production of the two new types of binder- the hydration and microstructure development of alkali-activated slag cements- the mechanical properties and durability of alkali-activated slag cement and concrete- other various cementing ...
The microstructure, mineral phases, morphology, hydration mechanism, and synergistic effect between cement and active phases were characterized by means of FESEM coupled with EDXA, XRD, FTIR, and XRF. The cements showed worm-like microstructure in the nanoscale with an average particle size of 20...