Results 11 to 20 of about 18,605 (255)
Buildings, 2022 This work studies the feasibility to employ a combination of volcanic ash (natural waste) with different raw materials in the production of geopolymers: fly ash and mining tailing (considered hazardous solid waste), natural pozzolan, and metakaolin. This
Rossibel Churata +6 more
doaj +2 more sources
Case Studies in Construction Materials, 2021 The paper presents the combined effect of pozzolan, as an alkaline volcanic rock, and perlite, as an acidic volcanic rock, in the synthesis of geopolymers. The perlite proportion varied between 0% and 50% by weight. A mixture of sodium silicate (Na2SiO3)
Ayoub Aziz +8 more
doaj +2 more sources
Buildings, 2023 For several decades, class F fly ash has been an attractive supplementary cementitious material, at least in part, due to its ability to reduce Portland cement consumption and mitigate alkali-silica reactions in concrete. However, fly ash availability is
Seyedsaleh Mousavinezhad +3 more
semanticscholar +1 more source
Clays for Low-Carbon Cements: Overview, Progress, and Challenges. [PDF]
Glob ChallThis review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Koufany I +4 more
europepmc +2 more sources
Sustainability, 2023 The production of Portland cement is energy-intensive and polluting. As a result, the search for ecological and economical alternatives has become a global priority.
Khadija Felaous +4 more
semanticscholar +1 more source
Civil Engineering Journal, 2023 Peat soil was defined as the highly organic surface layer derived primarily from plant remains. Peat, on the other hand, was the subsurface of wetland systems, consisting of unconsolidated superficial layers with a high non-crystalline colloid (humus ...
Mohd Syeddre Sutarno, H. Mohamad
semanticscholar +1 more source
Clay Ceramic Waste as Pozzolan Constituent in Cement for Structural Concrete
Materials, 2021 Ceramic-based wastes generated from different industrial activities have increasingly been reused as construction material incorporated into concrete. In general, these wastes just replace common concrete aggregates such as sand and gravel.
E. Barreto +6 more
semanticscholar +1 more source
Effect of Alkali - Activated Natural Pozzolan on Mechanical Properties of Geopolymer Concrete
Civil and Environmental Engineering, 2022 As an alternative to Ordinary Portland Cement (OPC), the alkali-activated binders have been developed with better technical characteristics and more extended durability.
Z. M. Mohammed +2 more
semanticscholar +1 more source
Pengendalian Persediaan Pozzolan di PT Semen Padang
Jurnal Optimasi Sistem Industri, 2016 Inventory of raw materials is the most important thing to produce the product. Inventory control of the raw materials quantityalso refers to the production process at the factory.
Prima Fithri, Annise Sindikia
doaj +1 more source
Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends [PDF]
, 2020 An increase in the generation of biogenic wastes such as locust bean pods and eggshells coupled with the need to drive sustainability in the cement industry has led the use of these wastes as cement replacement materials.
Jibril, Abubakar +2 more
core +2 more sources