Results 71 to 80 of about 7,806 (221)

Effects of Partial Substitution of Ordinary Portland Cement With Stone‐Cutting Dust, Limestone, and Natural Pozzolana on Compressive Strength and Microstructure

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Rapid industrialization and urban growth have driven a rising demand for cement, yet ordinary Portland cement (OPC) production remains energy‐intensive and a major source of CO2 emissions. The partial substitution of OPC with supplementary cementitious materials (SCMs) offers a sustainable route to reduce environmental impact, production costs, and ...
Nancy Mweni Paul, Jackson Wachira Muthengia, Genson Murithi, Esther Wanja Nthiga, Joanne Ogunah, Reginah Wangui Ngari, Qian Fang   +6 more
wiley   +1 more source

New Deposit of Mordenite–Clinoptilolite in the Eastern Region of Cuba: Uses as Pozzolans

Molecules, 2021
This work describes the newly discovered zeolites in the eastern region of Cuba. In the researched area, there have been no previous studies of natural zeolite exploration. Therefore, the results shown here are new. The main object of this research is to
Jorge Luis Costafreda, Domingo Alfonso Martín   +1 more
doaj   +1 more source

Modification of the Performance of Fresh and Hardened Concrete Reinforced With Fibers From Oil Palm Mesocarp

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Currently, many researchers use industrial or agricultural by‐products (waste) as raw materials for the construction sector. These wastes are economical and help preserve the environment through good waste management. For this purpose, oil palm mesocarp fibers (OPMFs) are used at various volume concentrations (0%, 0.25%, 0.5%, and 1%) for the ...
Paul William Mejouyo Huisken, Inès Léana Tchetgnia Ngassam, Gilbert Tchemou, Syrille Brice Tchinwoussi Youbi, Ebenezer Njeugna, Fujiao Tang   +5 more
wiley   +1 more source

The Impact of Oil Shale Ash on the Mechanical Properties of Cement Mortar as a Partial Cement Substitute for Sustainable Buildings

Buildings
This research intends to investigate and analyze the usage of Jordanian oil shale ash (OSA) as a replacement material for ordinary Portland cement and pozzolanic cement in mortar.
Walid Fouad Edris, Heba M. Mhedat, Mahmoud Al-Tamimi, Ahmed D. Almutairi, Abd Al-Kader A. Al Sayed, Tarek Ibrahim Selouma   +5 more
doaj   +1 more source

Sulfate Resistance of Alkali Activated Pozzolans [PDF]

, 2015
The consequence of sulfate attack on geopolymer concrete, made from an alkali activated natural pozzolan (AANP) has been studied in this paper. Changes in the compressive strength, expansion and capillary water absorption of specimens have been ...
Bondar, Dali
core   +1 more source

Effect of Steam, Carbonation, and Autoclave Curing on the Mechanical, Durability, and Microstructure Properties of UHPC: A Comprehensive Review

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Ultra high‐performance concrete (UHPC) is a material that brings revolutionary changes to modern building construction due to its outstanding mechanical, durability, and microstructural properties. This study investigates the impacts of these properties under three distinct curing regimes—steam curing, carbonation curing (CC), and autoclave curing (AC),
Shuvo Dip Datta, Samir Mazumder, Ying Qin   +2 more
wiley   +1 more source

Evaluation of Industrial by-products as pozzolans: A road map for use in concrete production

Case Studies in Construction Materials, 2020
The concrete industry is eagerly pursuing the economic advantages of concrete and the improvement of its long-term properties. One of the most effective approaches to improve concrete properties is associated with replacing part of the Portland cement ...
Girts Bumanis, Laura Vitola, Liga Stipniece, Janis Locs, Aleksandrs Korjakins, Diana Bajare   +5 more
doaj   +1 more source

Determination of the degree of reaction of fly ash in blended cement pastes [PDF]

, 2015
This paper gives a review over methods to determine the degree of reaction for supplementary cementitious materials (SCMs) with focus on Portland cement - fly ash blends only and summarizes and highlights the most important findings which are detailed in
De Belie, Nele, Gruyaert, Elke, Lothenbach, B, Scrivener, Karen, Skibsted, J, Snellings, Ruben, Villagran, Y, Vollpracht, A   +7 more
core  

Suitable classification of mortars from ancient roman and renaissance frescoes using thermal analysis and chemometrics [PDF]

, 2015
Background Literature on mortars has mainly focused on the identification and characterization of their components in order to assign them to a specific historical period, after accurate classification.
Campanella, Luigi, F., Marinucci, M., Positano, Marini, Federico, Tomassetti, Mauro   +4 more
core   +1 more source

Performance of Concrete Using Water Hyacinth Ash as a Partial Cement Substitute

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Concrete is one of the most widely used construction materials, with cement as its primary component. However, cement production significantly contributes to CO2 emissions, posing environmental challenges. This study investigates the use of water hyacinth ash (WHA) as a sustainable partial replacement for cement in C‐30 grade concrete.
Temesgen Ejigu Alene, Hana Zewdie, Tesfaye Alemu Mohammed, Binaya Patnaik, Awoke Kelemu Tamene, Mohammad Rezwan Habib   +5 more
wiley   +1 more source