Journal Article10.1016/J.JHAZMAT.2012.07.070
Mechanical properties and microstructure analysis of fly ash geopolymeric recycled concrete.
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TL;DR: Experimental results indicate that using alkali-activated fly ash geopolymer as replacement of ordinary Portland cement (OPC) effectively improved the compressive strength.
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About: This article is published in Journal of Hazardous Materials. The article was published on 30 Oct 2012. The article focuses on the topics: Fly ash & Geopolymer.
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Citations
A closed-form fracture model to predict tensile strength and fracture toughness of alkali-activated slag and fly ash blended concrete made by sea sand and recycled coarse aggregate
TL;DR: In this paper, a new type of concrete, namely alkali-activated slag and fly ash blended sea sand recycled aggregate concrete (AASRAC), is developed, and an analytical fracture model is proposed to predict the tensile strength ft, fracture toughness KIC and energy GF by using tests on three-point-bending notched beams of AAS-RAC.
28
New Porous Material Made from Industrial and Municipal Waste for Building Application
TL;DR: In this article, a new alkali activated material, which can be defined as porous building material, was created, consisting of aluminium recycling waste, recycled fluorescent lamp LSG, sintered kaolin clay as well as commercially available alkali flakes (NaOH) and liquid glass (Na2SiO3 + nH2O).
Reuse of recycled aggregate in the production of alkali-activated concrete
Prinya Chindaprasirt,T. Cao +1 more
- 01 Jan 2015
TL;DR: In this article, the types of recycled aggregates and the properties of recycled aggregate concretes, both fresh and hardened states, are discussed and the subject of alkali-activated recycled aggregate concrete is still at a very early stage and a lot more research is needed.
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Assessing alkali-activated concrete performance in chloride environments using NT Build 492
TL;DR: In this paper, a performance-based criteria for GPCs in marine environments using NT Build 492 and ASTM C1556 test protocols was established. But, the utilization of NT-Build 492 for GMCs requires recalibration due to their different microstructure and pore solution composition compared to Portland cement concrete.
25
Feasibility of construction demolition waste for unexplored geotechnical and geo-environmental applications- a review
TL;DR: More than 100 studies comprising theoretical and numerical modelling, laboratory investigation, and field tests on the use of C&D waste have been discussed in this article systematically, and the effects of particle size distribution, water absorption capacity, abrasion index, flakiness index, pH, reactivity index and microstructural cracks on its unsaturated hydro-mechanical properties were evaluated.
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References
Geopolymer technology: the current state of the art
Peter Duxson,Ana Fernández-Jiménez,John L. Provis,Grant C. Lukey,Ángel Palomo,J.S.J. van Deventer +5 more
TL;DR: A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali activation of aluminosilicates as mentioned in this paper.
4.1K
Geopolymers : inorganic polymeric new materials
TL;DR: In the last few years, technological progress has been made in the development of new materials such as "geopolymers" and new techniques, such as ''sol-gel'' as mentioned in this paper, opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry.
3.8K
Alkali-activated fly ashes: A cement for the future
TL;DR: In this paper, the mechanism of activation of fly ash with highly alkaline solutions is described, and the product of the reaction is an amorphous aluminosilicate gel having a structure similar to that of zeolitic precursors.
2.1K
The Role of Inorganic Polymer Technology in the Development of ‘Green Concrete’
TL;DR: In this paper, the potential position of and drivers for inorganic polymers (“geopolymers”) as an element of the push for a sustainable concrete industry are discussed.
1.8K
The greening of the concrete industry
TL;DR: The concrete industry is known to leave an enormous environmental footprint on Planet Earth as discussed by the authors, which contributes to the general appearance that concrete is not particularly environmentally friendly or compatible with the demands of sustainable development.
1.4K