Results 91 to 100 of about 14,929 (211)

Recent progress of porous geopolymers: nanoporosity regulation toward fundamental applications

Journal of Asian Ceramic Societies
Porous geopolymers have been the promising subject over the last decade owing to the functional domains from high surface area, structural stability upon heat and chemists, as well as eco-friendly and economy.
Hui-Yu Zhao, Gui-Lang Liu, Zhegang Huang, Long Yi Jin, Yi-Rong Pei   +4 more
doaj   +1 more source

Concrete retrofitting using CFRP and geopolymer mortars [PDF]

, 2011
A new development in the repair and strengthening of reinforced concrete systems is the use of carbon fiber reinforced polymers (CFRP) strips bonded to concrete substrate with epoxy resins.
Aguiar, J. L. Barroso de, Fernandes, S., Pacheco-Torgal, F., Vasconcelos, E.   +3 more
core  

Cost efficiency and resistance to chemical attack of a fly ash geopolymeric mortar versus epoxy resin and acrylic paint coatings [PDF]

, 2017
This article presents results of an experimental investigation on the resistance to chemical attack (with sulphuric, hydrochloric and nitric acid) of several materials: OPC concrete, high-performance concrete, epoxy resin, acrylic painting and a fly ash ...
Abdollahnejad, Zahra, Aguiar, J. L. Barroso de, Mendes, José F. G., Pacheco-Torgal, F., Tahri, W.   +4 more
core   +1 more source

Preparation of geopolymer for in-situ pavement construction on the moon utilizing minimal additives and human urine in lunar regolith simulant

Frontiers in Materials
Constructing lunar pavements is of great significance for improving the transportation efficiency of materials and personnel transfer at lunar bases. Utilizing lunar regolith for the in-situ preparation of geopolymer is an effective means of supplying ...
Lichong Chen, Tao Wang, Feng Li, Siqi Zhou   +3 more
doaj   +1 more source

Evaluation, comparison and differentiation of geopolymers by studying microstructural [PDF]

, 2015
Geopolymers are materials derived from an activation process materials with high content in silicon and aluminum, that in contact with an alkaline solution can acquire cementitious properties, and whose added value is to be environmentally friendly.
Almaral Sánchez, Jorge Luis, Arredondo Rea, Susana Paola, Corral Higuera, Ramón, Gómez Soberón, José Manuel Vicente, Morales Agundez, Catalina G.   +4 more
core   +1 more source

Foam geopolymers: state of the art and preliminary experimental results [PDF]

, 2014
Buildings are responsible for more than 40% of the energy consumption and greenhouse gas emissions. Thus increasing building energy efficiency is the most cost effective way to reduce emissions.
Abdollahnejad, Zahra, Aguiar, J. L. Barroso de, Pacheco-Torgal, F.   +2 more
core   +1 more source

Concrete retrofitting using metakaolin geopolymer mortars and CFRP [PDF]

, 2011
This paper presents results about the use of metakaolin based geopolymers mortars for retrofitting purposes. Two main situations are addressed, the use of geopolymeric mortars as a repairing layer or as a binding agent to insure the adhesion between CFRP
Aguiar, J. L. Barroso de, Fernandes, S., Pacheco-Torgal, F., Vasconcelos, E.   +3 more
core   +1 more source

The Structural Performance of Fiber-Reinforced Geopolymers: A Review

Eng
Geopolymers (GPs), as promising alternatives to ordinary Portland cement (OPC)-based concrete, have gained interest in the last 20 years due to their enhanced mechanical properties, durability, and lower environmental impact.
Salvatore Benfratello, Luigi Palizzolo, Carmelo Sanfilippo, Antonino Valenza, Sana Ullah   +4 more
doaj   +1 more source

Geopolymerization of lightweight aggregate waste

Materiales de Construccion, 2008
Geopolymerization is a viable way to process and re-use alumino-silicate industrial waste while producing highstrength, high chemical inertia materials that can effectively immobilize other industrial by-products, and even hazardous waste.
P. Soares, A. T. Pinto, V. M. Ferreira, J. A. Labrincha   +3 more
doaj   +1 more source

Alkali-activated binders: a review: part 2. About materials and binders manufacture [PDF]

, 2008
This paper summarizes current knowledge about alkali-activated binders, by reviewing previously published work. As it is shown in Part 1, alkali-activated binders have emerged as an alternative to (ordinary Portland cement) OPC binders, which seem to ...
Gomes, J. P. Castro, Jalali, Said, Pacheco-Torgal, F.   +2 more
core   +1 more source