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Importance of using the natural pozzolans on concrete durability
Cement and Concrete Research, 2002Abstract Natural pozzolans have become important because of their role in concrete durability. This situation has provoked an increase in the use of pozzolanic cement in concrete construction. This paper reports results of different portland–pozzolan cements containing different natural pozzolans, and they were compared with ASTM Types I, II and V ...
R.E Rodrı́guez-Camacho, R Uribe-Afif
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Pozzolanic soils: A natural resource for soil improvement techniques
2022Soil improvement techniques with binders are used in several geotechnical engineering applications, as a sustainable solution for the reuse of waste soils. An experimental research started some years ago on lime-treated medium/coarse-grained pyroclastic soils from volcanic districts of Central Italy, whose geotechnical characterization was previously ...
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An overview on the activation of reactivity of natural pozzolans
Canadian Journal of Civil Engineering, 2001Natural pozzolan is one of the oldest construction materials. Lime-pozzolan cements have been used for several thousands of years and have an excellent reputation for their durability. Pozzolans are being widely used as a cement replacement in Portland cement concrete.
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Production and Use of Calcined Natural Pozzolans in Concrete
Cement, Concrete, and Aggregates, 2001Abstract The goal of producing concrete that provides longterm durability with regard to properties such as improved sulfate resistance and reduced susceptibility to alkali-silica reactions (ASR) has led to the development of several high-performance materials.
GS Barger +5 more
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Natural Pozzolan-based geopolymers for sustainable construction
Environmental Earth Sciences, 2016The study presented herein evaluates effects of alkaline activator (sodium hydroxide) concentration, solution (sodium hydroxide solution)-to-binder ratio (S/B), and curing condition on properties of alkali-activated natural Pozzolan mortars (geopolymers).
Nader Ghafoori +2 more
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Alkali activated natural pozzolans for geopolymer cement
2021This thesis deals with the use of six natural pozzolans from Germany and Italy for geopolymer production. As the first part, a detailed study was conducted on the effect of silica modulus of sodium silicate solution and mineralogical composition of natural pozzolans on the extend of geopolymer reaction, reaction kinetics, mechanical properties, and ...
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NATURAL POZZOLANIC MORTARS FOR CULTURAL HERITAGE
2020Masonry buildings form large part of the world architectural heritage. They are often located in seismic areas and their vulnerability has been put in evidence after the seismic events in the course of their lives. The need of assessment of these buildings according to the performance-based demands of recent seismic codes require a deep knowledge of ...
G. Faella +3 more
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Effect of high volume natural pozzolan addition on the properties of pozzolanic cements
200298
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