Results 41 to 50 of about 25,921 (279)

Use of metakaolin as supplementary cementitious material in concrete, with focus on durability properties

RILEM Technical Letters, 2019
Numerous research efforts on metakaolin as a supplementary cementitious material (SCM) have been undertaken in the past 20 years. This material, while relatively expensive mainly due to low production volumes worldwide, nevertheless has a significantly ...
Alice T Bakera, Mark G Alexander
doaj   +1 more source

Study on Mechanical Properties of Metakaolin-Based Concretes and Corrosion of Carbon Steel Reinforcement in 3.5% NaCl

International Journal of Electrochemical Science, 2020
One of the techniques to improve the concrete durability is to use cement materials blended with silica fume, slag and fly ash. The use of calcined clay cement in the metakaolin form as a pozzolan for mortar and concrete has received remarkable interest ...
Jian Zhang, Jin Yang, Zhuoxuan Ying
doaj   +1 more source

Influence of size reduction of fly ash particles by grinding on the chemical properties of geopolymers [PDF]

, 2018
Chemical properties of geopolymers were evaluated from the reduction of fly ash particle size by grinding. X-ray diffraction determined that at early curing ages new crystalline phases appear in the matrix of the geopolymer and they remain for 28 days ...
Arredondo Rea, Susana Paola, Corral Higuera, Ramón, Cruz Enríquez, Adriana, Gómez Soberón, José Manuel Vicente, Medina Serna, Teresita de Jesús, Pellegrini Cervantes, Manuel de Jesús, Rosas Casarez,, Carlos Antonio   +6 more
core   +3 more sources

Impact of metakaolin on hydration properties of magnesium phosphate cement

Case Studies in Construction Materials
The degradation of mechanical properties in magnesium phosphate cement (MPC) is commonly observed under conditions of rapid heat release and high ambient temperature. To mitigate this phenomenon, the incorporation of metakaolin has been investigated as a
Runqing Liu, Wei Wang, Yunpeng Cui, Yuanquan Yang   +3 more
doaj   +1 more source

Use of a Piezoelectric Bender Element for the Determination of Initial and Final Setting Times of Metakaolin Geopolymer Pastes, with Applications to Laterite Soils

Sensors, 2022
This study proposes the use of a non-destructive testing technique, based on piezoelectric bender element tests, to determine the initial and final setting times of metakaolin geopolymer pastes. (1) Background: Metakaolin geopolymer is a new eco-friendly
Janjit Iamchaturapatr, Keeratikan Piriyakul, Aruz Petcherdchoo   +2 more
doaj   +1 more source

Highly porous mullite ceramics from engineered alkali activated suspensions [PDF]

, 2018
Air may be easily incorporated by vigorous mechanical stirring, with the help of surfactants, of activated geopolymer-yielding suspensions. The cellular structure is stabilized by the viscosity increase caused by curing reactions, configuring an ...
Bagci, Bagci, Beguin, Bell, Bell, Bell, Bell, Bernardo, Bortnovsky, Davidovits, Davidovits, Elsayed, Franchin, Gasca-Tirado, Glad, He, Kim, Kriven, Kriven, Krivenko, Kuenzel, O'Connor, O'Leary, Rincón, Sepulveda, Strozi Cilla, Strozi Cilla, Walkley, Wen, Wu, Yanase, Łodziana   +31 more
core   +2 more sources

Monitoring of historical structural materials with computed tomography

Structural Concrete, EarlyView.
Abstract Computed tomography (CT) is an excellent tool to solve certain engineering problems connected to material science (such as sulfate swelling, internal degradation due to freezing, and alkali silicate swelling) and to understand specific processes (frost peeling, acid action).
Kristóf Csorba, Kristóf Kapitány, Zsolt Cimer, Viktor Hlavička, András Biró, Éva Lublóy   +5 more
wiley   +1 more source

Enhancing durability of steam‐cured precast concrete culverts using SCMs: A comparative study with delithiated beta spodumene

Structural Concrete, EarlyView.
Abstract Steam curing is commonly used to manufacture precast culverts to accelerate early strength development. This study investigates the effect of supplementary cementitious materials (SCMs) on the permeability properties of steam‐cured precast concrete culverts.
Saugat Humagain, Prabir Kumar Sarker, Faiz Uddin Ahmed Shaikh, Daksh Baweja   +3 more
wiley   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

Journal of Vinyl and Additive Technology, EarlyView.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi, Gianluca Sarti, Luca Palin, Enrico Boccaleri, Alberto Frache   +4 more
wiley   +1 more source

Metakaolin–nanosilver as biocide mullite precursor

International Journal of Materials Research, 2012
Abstract Incorporation of silver nanoparticles enhances the biocide functionality of Ag supported kaolinite/metakaolite materials. In this regard, structural evolution of supports in the presence of silver nanoparticles is investigated.
Cabal, Belén, Sanz Lázaro, Jesús, Díaz, Luis A., Torrecillas, Ramón, Moya, J. S.   +4 more
openaire   +2 more sources