Results 61 to 70 of about 870 (178)

COMPARATIVE STUDY AND EMPIRICAL MODELLING OF PULVERIZED COCONUT SHELL, PERIWINKLE SHELL AND PALM KERNEL SHELL AS A POZZOLANS IN CONCRETE

Acta Polytechnica, 2019
Infrastructural development across the world is fast growing due to the rapid growth in population. This has resulted in consequently creating an increase in the demand for construction materials, especially cement.
Efe Ewaen Ikponmwosa, Samuel Onosedeba Ehikhuenmen, Karieren Kate Irene   +2 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

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

Green options for anti-corrosion of high strength concrete incorporating ternary pozzolan materials

MATEC Web of Conferences, 2017
This paper applied the densified mixture design algorithm(DMDA) method by incorporating ternary pozzolans (fly ash, slag and silica fume; mix I and mix II) to design high strength concrete (HSC) mixtures with w/cm ratios from 0.24 to 0.30.
Chen Yuan-Yuan, Yang Chien-Jou
doaj   +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

Evaluation of electric properties of cement mortars containing pozzolans

Materiales de Construccion, 2011
In this paper the evolution of the microstructure of Portland cement mortar is analyzed, by using electrical impedance measurements. Cement mortars are compared without and with two pozzolanic substitutions: spent fluid catalytic cracking catalyst (FCC ...
J. M. Cruz, J. Payá, L. F. Lalinde, I. C. Fita   +3 more
doaj   +1 more source

Strength, Sulfate Resistance, and Microstructural Characteristics of Concrete With Partial Cement Replacement Using Eggshell Powder and Wheat Straw Ash

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
This study explores the partial replacement of ordinary Portland cement (OPC) with a composite of eggshell powder (ESP) and wheat straw ash (WSA) in C‐25 concrete, focusing on mechanical performance and durability. Cement was replaced with varying proportions of ESP and WSA, and the concrete mix was prepared following ACI guidelines.
Abdulsemad Jemal Jema, Fikreyesus Demeke Cherkos, Mohammad Rezwan Habib   +2 more
wiley   +1 more source

Performance of silicic pozzolans and Portland cements in their behavior in front of gypsum attack as determined by ASTM C 452-68

Materiales de Construccion, 2013
For this study, ASTM C 452-68 testing was conducted for two years on 54 POZC-silica fume (SF) or diatomites (D and N) (=Z pozzolans), were tested for 2 years, by ASTM C 452-68 method, having determined to their specimens their Vcl(=ΔL(%)/day) .
R. Talero
doaj   +1 more source

An artificial neural network approach to predict particle shape characteristics of clay brick powder under various milling conditions

Results in Materials
The prediction and monitoring of shape descriptors of pozzolans generated from ball milling processes remain today unattended by researchers. Since the particle shapes of pozzolans influence the performance of pozzolanic materials in cement-based ...
David Sinkhonde, Destine Mashava
doaj   +1 more source

New method to assess the pozzolanic reactivity of mineral admixtures by means of pH and electrical conductivity measurements in lime:pozzolan suspensions

Materiales de Construccion, 2014
A very simple method based on electrical conductivity and pH measurements was proposed for assessing reactivity of pozzolans. Calcium hydroxide:pozzolan water suspensions were monitored by means of measurements of electrical conductivity and pH values ...
M. M. Tashima, L. Soriano, J. Monzó, M. V. Borrachero, J. L. Akasaki, J. Payá   +5 more
doaj   +1 more source