Results 31 to 40 of about 4,951,536 (143)

Effect of the Fineness of Artificial Pozzolana (Sarooj) on the Properties of Lime-Pozzolana Mixes [PDF]

, 2002
Strength development of lime-pozzolana mortars is affected by the fineness of the pozzolan. This paper examines the effect of the fineness of artificial pozzolana on the strength development of lime-pozzolana mixtures. An artificial pozzolana produced by
Abdel Wahid Hago, Hago, Abdel Wahid, Awadh Al-Sidairi, Al-Sidairi, Awadh, Al-Rawas, Amer Ali, Amer Ali Al-Rawas   +5 more
core   +1 more source

Types of lime binders in mortars used for the construction of the Ming Great Wall of China and their importance for the development of a conservation strategy

Built Heritage, 2022
The most obvious characteristics of the Ming Great Wall are external masonry walls made of natural stones, bricks and lime mortars. According to the chemical and mineralogical compositions of the original bedding and pointing mortars, dolomitic lime ...
Tanja Dettmering, Shibing Dai
doaj   +1 more source

The Effect of Clay Pozzolana-Cement-Composite on the Strength Development of a Hydraulic Backfill [PDF]

, 2018
The study sought to investigate the potential application of clay pozzolana as a supplement for cement in hydraulic backfill, using classified tailings from AngloGold Ashanti, Obuasi Mine.
Gidigasu, Solomon Senyo Robert, Gawu, S. K. Y., Eshun, S. N., S. N. Eshun, Solomon Senyo Robert Gidigasu, S. K. Y. Gawu   +5 more
core   +1 more source

Hydration mechanisms in low-clinker composite cement systems

Cement
The hydration mechanism of the low-clinker binders (cement ≤ 45%) incorporating either calcined clay or natural pozzolana together with limestone were investigated in this study.
Aysha Anagreh, Maciej Zajac, Mohsen Ben Haha, Arnaud Muller, Thomas Matschei   +4 more
doaj   +1 more source

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

Structural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

Combined Effect of Natural Pozzolana and Steel Fibre on the Mechanical Properties of Normal Concrete Subjected to a High Temperature

Slovak Journal of Civil Engineering
The objective of this work is to study the effects of high temperatures on the compressive strength, flexural tensile strength, and toughness indices of ordinary concrete reinforced with 0.5% steel fibre.
Boulakoud Bilel
doaj   +1 more source

Study of the effect of calcium nitrate, calcium formate, triethanolamine, and triisopropanolamine on compressive strength of Portland-pozzolana cement

Case Studies in Construction Materials, 2023
This study aims to assess the effect of using some chemical admixtures including Calcium nitrate tetrahydrate (CN) and Calcium formate (CF), Triethanolamine (TEA), and Triisopropanolamine (TIPA) on the early-age compressive strength of Portland cement ...
Aliakbar Derakhshani, Arezoo Ghadi, Seyed Ebrahim Vahdat   +2 more
doaj   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

Properties of Mortars with Natural Pozzolana and Limestone-Based Blended Cements

ACI Materials Journal, 2011
This paper presents the results of an experimental investigation on the consistency, compressive strength, water sorptivity, chloride ion permeability, electrical resistivity, and sulfate resistance of mortars made with plain and blended cements. Plain (CEM I 42.5 R) and blended cements, including portland pozzolana cements (CEM II A-P 42.5 R and CEM ...
Guneyisi, Erhan, Gesoglu, Mehmet, Ozturan, Turan, Mermerdas, Kasim, Ozbay, Erdogan   +4 more
openaire   +3 more sources

Mechanical and Durability Performance of Concrete Incorporating Shredded Waste Polyethylene Terephthalate (PET) as Partial Fine Aggregate Replacement

Engineering Reports, Volume 8, Issue 11, November 2026.
Incorporating shredded waste PET as a partial fine aggregate replacement up to 20%$$ 20\% $$ in C‐25 concrete provides a sustainable recycling solution, maintaining low water permeability and acceptable structural strength across all tested replacement levels. ABSTRACT The growing demand for concrete has increased the consumption of natural sand, while
Yeabsra Mulugeta Alamir, Awoke Kelemu Tamene, Abrham Gebre Tarekegn, Tatek Yenehun Lemlem, Tesfaye Alemu Mohammed   +4 more
wiley   +1 more source