Results 81 to 90 of about 16,734 (232)

Geopolymer Cements and Their Properties: A Review

Building Research Journal, 2015
Abstract Concrete is the world's most versatile, durable and reliable construction material. Next to water, concrete is the second most used substance on earth and it requires large quantities of Portland cement. The industrial sector is the third largest source of man-made carbon dioxide emissions after the transportation sector as the major generator
Vladimír Živica, Martin T. Palou, Martin Križma   +2 more
openaire   +1 more source

Preparation and Characterization of Low Cost Geopolymer Cement [PDF]

Journal of Scientific Research in Science, 2019
This paper presents the preparation and characterization of geopolymer cement. Sodium hydroxide with different percentage (4%, 6% and 8%) with sodium silicate (5%, 10% and 15%) of the mass of blast furnace slag are mixed to prepare the activator. The slag is mixed with the activator of different concentrations to prepare the geopolymer pastes.
ASHRAF RIZK, ESSAM KISHAR, D. AHMED, MOHAMED KOHAIL   +3 more
openaire   +1 more source

Circular Alkali‐Activated Cements Based on EAF Slags and Biomass Bottom Ash Using Rice Husk Ash–Derived Sodium Silicate

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT This study investigates sodium silicate (SS) solutions derived from rice husk ash (RHA) dissolved in 8 M NaOH as sustainable activators for alkali‐activated cements (AACs), compared with commercial SS. AACs were produced using a 50:50 blend of electric arc furnace slag (EAFS) and biomass bottom ash (BA). The effects of NaOH/RHA ratio (6.6–2.8)
A. Muñoz‐Castillo, S. Bueno‐Rodríguez, D. Eliche‐Quesada   +2 more
wiley   +1 more source

Modeling of lead (II) adsorption on sodium hydroxide treated rice husk: fixed-bed studies [PDF]

, 2017
Sodium hydroxide treated rice husk was explored as an adsorbent for the removal of lead (II) ions from aqueous solutions in a column studies. This paper evaluate the effect of flow rates of 3 mL/min and 9 mL/min; bed depth of 0.9 cm, 1.8 cm and 2.8 cm ...
Abdul Rahman, Abdul Rasheed, Basri, Hatijah, Garba, Abdurrahman, Nasri, Noor Shawal, Siddiq, Umar Hayatu   +4 more
core   +2 more sources

Flexural behaviour of cement added geopolymer concrete

IOP Conference Series: Materials Science and Engineering, 2018
This work aims to improve the flexural behaviour of Geopolymer Concrete (GPC). GPC is an ecofriendly concrete in which Ordinary Portland Cement (OPC) is completely replaced by pozzolanic materials i.e. Fly Ash or GGBS or Rice Husk Ash and activated alkaline solutions like NaOH or KaOH and Na2SiO3 to act as a binder in the concrete mix.
K Sudhakarreddy, Srinivas Angadi, B Sivakondareddy, T Chandrasekharreddy, Venu Malagavelli   +4 more
openaire   +1 more source

Reactivity Evolution of Mechanochemically Activated Laterite Used as a Supplementary Cementitious Material

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT The use of laterite soil with high Al and Fe content has been investigated as a novel supplementary cementitious material (SCM) to replace traditional mineral materials for clinker substitution. High‐energy ball milling was used to mechanochemically activate laterite and change its reactivity.
Jean Noel Yankwa Djobo, Hong Wong, Christopher Cheeseman   +2 more
wiley   +1 more source

Concrete crack repair analysis with metakaolin-based geopolymer cement

Revista IBRACON de Estruturas e Materiais
Among the advances in the use of geopolymer cements is their use as repair materials in concrete structures. The objective of this work was to use a geopolymer cement to repair cracks in concrete specimens, observing its mechanical performance and ...
B. J. FRASSON, F. PELISSER, B. V. SILVA
doaj   +1 more source

Optimizing Geopolymer-Based Material for Industrial Application with Analytic Hierarchy Process and Multi-Response Surface Analysis

Chemical Engineering Transactions, 2015
High CO2 emission and energy intensity from the Portland cement industry has prompted many researchers to develop cleaner and low-emission technologies for a sustainable built environment.
A.K.R. Sumabat, A.J. Mañalac, N.T. Nguyen, M.E. Kalaw, R.R. Tan, M.A.B. Promentilla   +5 more
doaj   +1 more source

Development of durable “green” concrete exposed to deicing chemicals via synergistic use of locally available recycled materials and multi-scale modifiers [PDF]

, 2018
From the economic and social perspectives, the use of waste materials would not be attractive until their costs and quality can satisfy the construction requirements.
Cui, Na, Xie, Ning
core  

Using boron as a tracer reveals how surface precipitates inhibit silicate dissolution in hyperalkaline solutions during alkali–silica reaction

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Abstract Silicate dissolution under hyperalkaline conditions is a key process that affects the evolution of alkali–silica reaction (ASR) in concrete. In these environments, dissolution may involve multiple overlapping processes—including ion adsorption on reactive sites, transport of dissolved species, and the formation of alteration layers.
Rui Xiao, Adriano Souza Leão, Mehrdad Torabzadegan, Erika La Plante, Gaurav N. Sant   +4 more
wiley   +1 more source