Results 31 to 40 of about 2,024 (169)

Effect of Fineness and Heat Treatment on the Pozzolanic Activity of Natural Volcanic Ash for Its Utilization as Supplementary Cementitious Materials

Crystals, 2022
The aim of this study was to investigate the influence of fineness and heat-treatment on the pozzolanic and engineering properties of volcanic ash. To this end, two different fineness levels of volcanic ash, ultra-fine (VAF) and fine (VA), without and ...
Kaffayatullah Khan, Muhammad Nasir Amin, Muhammad Usman, Muhammad Imran, Majdi Adel Al-Faiad, Faisal I. Shalabi   +5 more
doaj   +1 more source

Synergistic Effects of Silica and Calcium‐Based Dual Admixtures on the Flowability, Microstructure, and Strength Development in Low‐Carbon Concrete

Applied Research, Volume 5, Issue 4, August 2026.
ABSTRACT Eco‐friendly construction practices have emerged as a cornerstone of modern development. Due to the substantial carbon emissions from cement production, there is a growing demand for supplementary cementitious materials. This study investigated the synergistic effects of two different wastes, silica‐rich rice husk ash (RHA) and calcium‐rich ...
Md. Soybur Rahman, Zakaria Hossain
wiley   +1 more source

Influence of the origin of metakaolin on pozzolanic reactivity of mortars

Energy Procedia, 2017
Abstract Cement is one of the main sources of environmental impacts of concrete use. It is thus recognized that the most pragmatic solution for minimizing environmental impacts of concrete is the reduction of the cement content. This could be achieved by replacing a part of cement with mineral additions such as fly ash, blast-furnace slag or ...
Kamal Abdelli, Mahfoud Tahlaiti, Rafik Belarbi, Mohamed Nadjib Oudjit   +3 more
openaire   +1 more source

Effect of cooling method and phase composition on the reactivity of ferrochrome slag as a supplementary cementitious material

Cleaner Engineering and Technology
Ferrochrome slag (FCS), a by-product of ferrochrome production, is a largely underutilized industrial residue with strong potential as a supplementary cementitious material (SCM) to reduce clinker demand and support sustainable construction.
Iyani Muthukuda Arachchige, Jenny Isaksson, Min Chen, Chuan Wang, Fredrik Engström, Anton Andersson   +5 more
doaj   +1 more source

Influence of Self‐Cleaning Photocatalysts on the Engineering and Functional Properties of Paints and Composite Materials

Engineering Reports, Volume 8, Issue 8, August 2026.
Ni‐doped Ba2TiO3 nanophotocatalyst is incorporated into paint and cement composites to create light‐activated construction materials. Under solar irradiation, the material degrades nitrogen oxides and organic dyes into harmless products, imparting self‐cleaning behavior while simultaneously enhancing mechanical strength, offering a sustainable approach
Naveen Thakur, Shamsher Bahadur Singh, Anshuman Srivastava   +2 more
wiley   +1 more source

Efficiency of Superplasticizers in Low‐carbon Alkali‐activated Slag–Silica Fume Binders Governed by Polymer Solubility

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
ABSTRACT Workability control of alkali‐activated binders (AABs) remains an obstacle to producing low‐carbon clinkerless ultra‐high‐performance concrete, as their formulation usually necessitates low water‐to‐binder (W/B) ratios, high binder content, and concentrated activator solutions. To address this challenge, a greener and more manageable composite
Shengnan Sha, Kunlin Luo, Yuhui Lyu, Hailong Ye   +3 more
wiley   +1 more source

Prediction of strength activity index using chemical and physical properties of pozzolans

Cement
Reductions in cement use have essential benefits in reducing the embodied energy in concrete and CO2 emissions. Hence, effective assessment of potential pozzolanic materials is highly desirable to facilitate usage as sustainable supplementary ...
Farzaneh Elyasigorji, Habib Tabatabai
doaj   +1 more source

Ettringite Seeds for Strength Enhancement: Novel Synthesis via One‐Step Co‐Precipitation

Journal of the American Ceramic Society, Volume 109, Issue 8, August 2026.
ABSTRACT Reduced early strength can be a barrier to the adoption of cements blended with high levels of limestone. Chemical admixtures based on nucleation seeding are emerging as a potential solution. Herein, while synthesis of C‐S‐H‐based seeds has been thoroughly investigated in the literature, there are limited synthesis protocols available on other
Faisal Qadri, Tausif E. Elahi, Nishant Garg   +2 more
wiley   +1 more source

EVALUATION OF POZZOLANIC REACTIVITY OF CALCINED KAOLINITE

International Journal of Research in Engineering and Technology, 2014
The need to improve the sustainability and the need for innovation in the cement industry has brought to light the practice of using additives to the cement in order to decrease CO2 emissions in industrial plants and increase the quality of cement in terms of durability and performance.
openaire   +1 more source

Assessment of Pozzolanic Reactivity for Calcined Spent Bleaching Earth Ash (SBEA) using Strength Activity Index (SAI), Frattini Test and X-Ray Diffraction (XRD) [PDF]

MATEC Web of Conferences
This research briefly investigates and compares three different and distinct methods of assessing the pozzolanic reactivity of a cementitious replacement material, Spent Bleaching Earth Ash (SBEA).
Lim Chung Han, Anwar Syaza Syazvina
doaj   +1 more source