Results 191 to 200 of about 16,734 (232)

Antibacterial Metakaolin-Based Geopolymer Cement

2017
Geopolymer cement can be used as a ceramic matrix carrier for different applications such as antibacterial materials. In this work, an antibacterial geopolymer cement has been synthesized by loading the organic compound 5-chloro-2-(2, 4-Dichlorophenoxy) phenol also known as “Triclosan” into a geopolymer metakaolin and nano-silica based cement matrix ...
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Geopolymer cement: Synthesis, Characterization, Properties and applications

Materials Today: Proceedings, 2019
Abstract Geopolymer is emerging as a new alternative binding material. It is made by alkali activation of waste materials containing alumino silicate such as fly ash, blast furnace slag, clay, etc. Geopolymer mortars/concretes are expected to be green binding material and consumes less energy.
Nakshatra B. Singh, Sunil Kumar Saxena, Mukesh Kumar, Sarita Rai   +3 more
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Development of New Formulation of Geopolymer Cement for Oil Well Cementing

International Petroleum Technology Conference, 2016
Abstract In this paper, we report the results of the investigations on the effects of sodium hydroxide (NaOH) concentration and different ratio of silicate to hydroxide on the density, rheology and compressive strength of geopolymer cement system used in oil well.
Raja Rajeswary Suppiah, Siti Humairah Abd Rahman, Sonny Irawan, Nasir Shafiq   +3 more
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Properties of Chemically Synthesized Nano-geopolymer Cement based Self-Compacting Geopolymer Concrete (SCGC)

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2019
The physical and mechanical properties of self-compacting geopolymer concrete (SCGC) using chemically synthesized nano-geopolymer cement was investigated. Nano-geopolymer cement was synthesized using nano-silica, alkali activator, and sodium aluminate in the laboratory.
Muhammad Ali Sikandar, Byung Wan Jo, Zafar Baloch, Muhammad Asad Khan   +3 more
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Geopolymer cement slurries with enhanced mechanical and physical properties for oilwell cementing

5th Brunei International Conference on Engineering and Technology (BICET 2014), 2014
Cement integrity and durability in the wells is a major concern for oil industries in securing long term production especially after Macondo disaster. Recent studies show that there are several problems associated with the use of Portland cement such as permeability and strength degradation of well cement, susceptibility to chemical reactions, poor ...
S. Ridha, U. Yerikania
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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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Geopolymer Implemented in Primary Casing Cementing

Journal of Petroleum Technology
_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper OTC 32218, “First Global Implementation of Geopolymer in Primary Casing Cementing,” by Mark Meade, SPE, Yeukayi Nenjerama, SPE, and Chris Parton, SPE, SLB, et al. The paper has not been peer reviewed.
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Radiological characterization of anhydrous/hydrated cements and geopolymers

Construction and Building Materials, 2015
Abstract The aim of this study has been to determine the activity concentrations of 40 K and radionuclides from the 238 U and 232 Th decay series in commercial cements, some industrial wastes and geopolymers (also called alkaline cements) and to calculate their activity concentration levels after the cement hydration/activation at 28 days to ...
F. Puertas, M.M. Alonso, M. Torres-Carrasco, P. Rivilla, C. Gasco, L. Yagüe, J.A. Suárez, N. Navarro   +7 more
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Geopolymer cement and use therof

2013
The present invention relates to a novel type of noncorrosive geopolymer cement in which said cement comprises a metakaolin or a mixture of metakaolin and non-thermally activated aluminosilicate.
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Geopolymer binder: A veritable alternative to Portland cement

Materials Today: Proceedings, 2017
Abstract This paper presents the progress made on the research carried out on Geopolymer concrete using available local raw materials. The aim was to find alternative to Ordinary Portland cement(OPC) which has attracted a lot of criticisms due to inherent danger associated with its production.
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