نتایج جستجو برای: effect alkali activator
تعداد نتایج: 1695701 فیلتر نتایج به سال:
1,2,3,4-Butane tetracarboxylic acid (BTCA)-treated cotton fabrics were immersed in alkali for increasing time periods and the effectiveness of alkali in removing the cross-linking agent was investigated by surface (X-ray photoelectron spectroscopy, XPS) analysis, attenuated total reflectance Fourier transform infrared spectroscopy and solubility in specific solvents. The cellulose yield after t...
For the first time, this study developed a novel model, named GeoMicro3D, to simulate reaction process and microstructure formation of alkali-activated slag. The GeoMicro3D model consists four modules that are designed simulate, respectively: (i) initial spatial distribution real-shape slag particles in alkaline activator, (ii) dissolution diffusion ions via transition state theory lattice Bolt...
Abstract Fly ash (FA) is pozzolanic, while blast furnace slag (GGBS) latent hydraulic. These two materials react slowly in the presence of water to harden. Adding an alkali activator such as strong hydroxide could boost hardening process, but safe handling highly corrosive primary concern. Therefore, present work prescribed various types gypsum activate FA and GGBS a binder phase for making mor...
Geopolymer concrete has the outstanding characteristics of low carbon emissions and energy consumption while utilizing industrial solid waste, is expected to replace cement as a new generation green building materials. Moreover, with continuous increase in amount concrete, environmental damage resource depletion caused by mining sand gravel aggregates have become increasingly serious. It immine...
The alkali preparation of the root and fresh leaf juice of Moringa oleifera possessed significant dose -depen-dent anti-ulcer activity in experimentally induced acute gastric ulcers with aspirin, the anti-ulcer effect of the alkali preparation of the root seems to be more pronounced than that of the fresh leaf juice. Te anti-ulcer activity of the alkali preparation of the root could be due to i...
The significant difference in water-to-binder ratio, activator type and concentration between alkali-activated slag (AAS) paste/mortar/concrete AAS-based cemented paste backfill (AAS-CPB) means that previous results related to the properties mix optimization of AAS materials cannot be directly translated AAS-CPB. This study statistically identifies effect key influential variables such as silic...
This paper presents an innovative approach towards the development of a green concrete. The geopolymer is environmentally friendly construction/repairing material. In addition, glass fibers are helpful to influence strength properties and reduce hair line cracks bleeding in study based on use fly ash as partial replacement cement and, subsequently, its effect compressive split tensile manufactu...
Concrete is the most commonly used construction material because of its various advantages, such as versatility, familiarity, strength, and durability, it will continue to be in demand far into future. However, with today’s sensitivity environmental protection, this faces unprecedented challenges high greenhouse gas emissions, mainly during cement production. This paper investigates one promisi...
Research focusing on waste management and CO2 mineralization simultaneously has been a popular topic in the mining community, common approach is to mineralize with coal-based solid (CSW, e.g., gangue (CG), fly ash (FA), coal gasification slag (CGS)) produced by activities. Despite understanding of cementitious materials, capacity alkali-activated CSWs remains unknown. Therefore, mineral composi...
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