Results 61 to 70 of about 7,633 (204)

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

open access: yesAdvances 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   +2 more
wiley   +1 more source

Monitoring the reactivity of pozzolans by thermogravimetric method

open access: yesActa Polytechnica CTU Proceedings
This work focuses on comparing the effect of ten different types of pozzolans on the strength of lime pastes in relation to their pozzolanic activities as determined by the Chapelle test and monitoring the reactivity of these pozzolans using the ...
Martin Vyšvařil
doaj   +1 more source

Effective ecological and cheap heating of dwelling spaces [PDF]

open access: yes, 2019
The sustainability of human civilization depends largely on green energy management. This work represents one way to achieve this goal. The work is devoted to converting microwave radiation to heat.
David, Jiří   +6 more
core   +1 more source

Enhanced Utilization of Coal Ash in Construction: Physicochemical Properties and Compressive Strength of Blended Cement and Geopolymer Mortar

open access: yesAdvances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
The properties of fly and bottom ashes produced by Morupule power stations in Botswana are analysed for their pozzolanicity. Furthermore, the influence of physical, chemical and microstructural properties of the ashes on the performance of compressive strength of fly ash–based blended cement and geopolymer mortar was evaluated.
Damilola O. Oyejobi   +4 more
wiley   +1 more source

Study of effect of electric arc furnace slag on expansion of mortars subjected to alkali-aggregate reaction

open access: yesRevista IBRACON de Estruturas e Materiais
Alkali-aggregate reaction is a chemical reaction between cement alkalis and some reactive mineral present in some aggregates, leading to concrete expansion and cracking.
L. SOUZA, E. R. ZOLETT, R. CARRAZEDO
doaj   +1 more source

Stabilisation and solidification of contaminated soil using cement and sugarcane bagasse ash (SCBA) [PDF]

open access: yes, 2018
Soil that is contaminated with heavy metals has become a major issue worldwide. However, proper remediation techniques such as stabilisation/solidification (S/S) method can be employed and is capable of controlling these heavy metals.
Mohammad Azmi, Mohamad Azim
core  

Sulfate Resistance of Alkali Activated Pozzolans [PDF]

open access: yes, 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

Development of Optimally Reinforced Glass/Bamboo Fiber and Rice Husk/Bagasse Filler Agrostone Composite Panels for Interior Panel Applications

open access: yesJournal of Engineering, Volume 2026, Issue 1, 2026.
Agrostone panels, popularly used for interior walls in construction, are usually made from sustainable agricultural waste such as bagasse as filler and glass fiber as reinforcement in a binder of pumice, MgO, and MgCl2 solutions. The present work has gone ahead of one step by adding rice husk and bamboo fiber, which are abundantly available in Ethiopia,
Addisu Negash Ali   +4 more
wiley   +1 more source

Barley Straw Ash: Pozzolanic Activity and Comparison with other Natural and Artificial Pozzolans from México

open access: yesBioResources, 2015
The construction industry is one of the largest and most active growth sectors worldwide. It presents an important environmental impact, and one way to reduce the impact of the construction activity is to substitute pozzolanic materials for ordinary ...
Carlos Cobreros   +7 more
doaj   +1 more source

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

open access: yesMolecules, 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   +1 more
doaj   +1 more source

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