Results 71 to 80 of about 4,051 (214)
The Impact of DNA as a Chemical Admixture for Cementitious Materials
Advanced Materials Technologies, Volume 10, Issue 15, August 7, 2025.DNA molecules are added to cement pastes and their effects on rheology and hydration time are studied. DNA's chemical structure is composed of polysaccharide and phosphate groups, which are active functional groups in different commercial chemical admixtures: Viscosity modifiers and superplasticizers.
Alexander Mezhov +4 more
wiley +1 more source
MATEC Web of Conferences, 2017 This paper addresses the feasibility and the efficiency of using Natural Pozzolan and/or Rock flour in Roller Compacted Concrete (RCC) gravity dams. For this purpose, five identical mortar trial mixes were prepared using five different supplementary ...
Husein Malkawi Abdallah I. +2 more
doaj +1 more source
Effects of pulverized fuel ash as cement replacement material toward concrete microstructure [PDF]
, 2012 The Pulverized Fuel Ash (PFA) is known as pozzolanic material and can be used as cement replacement material in the concrete in order to improve concrete properties.
Nor Liyana , Suraini
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Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.Abstract Correlation of ignimbrite units at polygenic calderas is mandatory for the reconstruction of caldera‐forming events and proper identification of their eruption dynamics. However, ignimbrites erupted at different times from the same caldera can display similarities in composition and lithology that can hamper proper correlation of outcrops ...
Arianna Beatrice Malaguti +5 more
wiley +1 more source
Mordenite from Spain and its application as pozzolana [PDF]
, 2014 In Spain, natural zeolites have been only found in the volcanic areas of Canary Islands (San Gil, M.M., 1959). However, several years ago the study of the South Eastern region of continental Spain (Cabo de Gata) revealed the presence of a deposit of ...
Calvo Pérez, Benjamín +6 more
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Structural Concrete, Volume 26, Issue 3, Page 2881-2899, June 2025.Abstract The present study investigates the applicability of recycled concrete aggregates (RCA) for use in structural concrete made with low‐emission cement CEM II/C‐M (global warming potential of 377 kg CO2,eqv.). The aim is to show the potential of RCA processed with minimal energy, water, and economic expenditure.
Johannes Hron +6 more
wiley +1 more source
Effect of harsh environment on cement mortar containing natural pozzolans
Case Studies in Construction MaterialsThis investigation aims to study the effect of the harsh environment on cement mortar containing pumice powder (natural pozzolana) as a partial substitute for ordinary Portland cement (OPC).
Abdullah M. Zeyad
doaj +1 more source
Advancements in Self‐Compacting Concrete Reinforced With Basalt Fiber: A Comprehensive Review
Engineering Reports, Volume 7, Issue 5, May 2025.Self‐compacting concrete is widely used in the construction industry in which adding basalt fibers exhibits comparable resistance to energy absorption, with an efficacy of around 40% and resists crack propagation. This review paper emphasizes the key characteristics of various properties, including fresh, mechanical, impact, and elevated temperature ...
M. Kiran Prabha +3 more
wiley +1 more source
Performance characterization of the concrete subjected to fire in terms of sustainability [PDF]
, 2015 The research, in a context of a sustainability of the building process, that should consider adequately the problem of building waste disposal, has the objective of determining the performance characteristics of concrete under the effect of fire, in ...
Nicolella, M., Scognamillo, C.
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Control of Concrete Segregation and Quality Enhancement Using Continuous Mixer Units
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.Managing concrete segregation during transportation and pouring at construction sites is posed as a substantial challenge. The utilization of continuous mixer units to address segregation and enhance the quality of concrete is discussed in this paper. These mixer units were tested in both horizontal (M–Y mixer) and vertical (ESG mixer) setups.
Tek Raj Gyawali +3 more
wiley +1 more source