Results 181 to 190 of about 1,825 (209)

An overview on the activation of reactivity of natural pozzolans

Canadian Journal of Civil Engineering, 2001
Natural 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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Natural Pozzolan-based geopolymers for sustainable construction

Environmental Earth Sciences, 2016
The 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, Meysam Najimi, Brittany Radke   +2 more
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Study on the Efficacy of Natural Pozzolans in Cement Mortar

2020
With the advent of the Industrial Revolution, science and technology grew rapidly with the producing era coming into view. The early industrial sectors engaged in small scale production of the major pollutant, smoke. Owing to the emergence of numerous factories and large scale jobs, the problems of industrial contaminating activities began to assume ...
Ashish Shukla, Nakul Gupta
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Alkali activated natural pozzolans for geopolymer cement

2021
This 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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Characterization and quantification of the pozzolanic reactivity of natural and non-conventional pozzolans

Cement and Concrete Composites, 2022
Jinyoung Yoon, Khashayar Jafari, Raikhan Tokpatayeva, Sulapha Peethamparan, Jan Olek, Farshad Rajabipour   +5 more
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NATURAL POZZOLANIC MORTARS FOR CULTURAL HERITAGE

2020
Masonry 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, M. Aurilio, A. Tufaro, G. Frunzio   +3 more
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Effect of high volume natural pozzolan addition on the properties of pozzolanic cements

2002
98
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Evolution of a natural pozzolan-based geopolymer alkalized in the presence of sodium or potassium silicate/hydroxide solution

Construction and Building Materials, 2022
Lucia Téllez-Jurado
exaly  

Natural pozzolans

2016
openaire   +2 more sources

Mechanical, environmental, and economic assessment of sustainable cement mortar using Afghan natural pozzolan as a partial replacement for cement

Construction and Building Materials, 2023
Mohammad Kazem Sharbatdar, Omid Rezaifar   +1 more
exaly