Production of geopolymer concrete using natural pozzolan: A parametric study

2016 ◽  
Vol 114 ◽  
pp. 699-707 ◽  
Author(s):  
Rami H. Haddad ◽  
Odey Alshbuol
Keyword(s):  
Parametric Study ◽  
Geopolymer Concrete ◽  
Natural Pozzolan

Alkali-activated natural pozzolan/slag mortars: A parametric study

2018 ◽  
Vol 164 ◽  
pp. 625-643 ◽  
Author(s):  
Meysam Najimi ◽  
Nader Ghafoori ◽  
Mohammadreza Sharbaf
Keyword(s):  
Parametric Study ◽  
Natural Pozzolan ◽  
Alkali Activated

EFFECT OF INCORPORATING NANO ZEOLITE ON THE STRENGTH OF NATURAL POZZOLAN-BASED GEOPOLYMER CONCRETE

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Muhammad Kalimur Rahman ◽  
Mohammed Ibrahim ◽  
Mohammed Salihu Barry ◽  
Hassan Al Khalifa
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Source Material ◽  
Strength Development ◽  
Early Age ◽  
Geopolymer Concrete ◽  
Microstructural Properties ◽  
Natural Pozzolan ◽  
Polymeric Compounds ◽  
Scanning Electron

Natural pozzolan is a green and sustainable material, which has a strong potential for utilization in the geopolymer concrete. At room temperature, the development of strength in natural pozzolan based geopolymer concrete is fair, however, it is desirable, to have higher strength and to enhance the early age strength development. The effect of nano zeolite (NZ) as an additive to the mix by incorporating it at 3% and 5% by weight of natural pozzolan on the strength development and microstructural properties of natural pozzolan based geopolymer concrete mixes are presented. Scanning electron microscopy (SEM) was utilized to determine the morphology of the paste. The results indicated that 5% nanozeolite replacement resulted in superior strength and denser microstructure compared to other mixes. The addition of nanozeolite improved dissolution of source material in the alkaline activators and enhanced transformation of it to form polymeric compounds.

Parametric Study of Reinforced Metakaolin-Based Geopolymer Concrete against Chloride-Induced Corrosion

2021 ◽  
Author(s):  
Oscar D. Huang ◽  
Changkyu Kim ◽  
Nathaniel J. Lies ◽  
Homero Castaneda ◽  
Miladin Radovic
Keyword(s):  
Parametric Study ◽  
Geopolymer Concrete ◽  
Chloride Induced Corrosion

Parametric Study of Photovoltaic Thermal Solar Collector Using An Improved Parallel Flow

2020 ◽  
Vol 2 (1) ◽  
pp. 19-24
Author(s):  
Sakhr Mohammed Sultan ◽  
Chih Ping Tso ◽  
Ervina Efzan Mohd Noor ◽  
Fadhel Mustafa Ibrahim ◽  
Saqaff Ahmed Alkaff
Keyword(s):  
Thermal Conductivity ◽  
Energy Balance ◽  
Parametric Study ◽  
Solar Collector ◽  
Parallel Flow ◽  
Operating Conditions ◽  
Balance Equations ◽  
Conductivity Type ◽  
Pv Module ◽  
Sunny Weather

Photovoltaic Thermal Solar Collector (PVT) is a hybrid technology used to produce electricity and heat simultaneously. Current enhancements in PVT are to increase the electrical and thermal efficiencies. Many PVT factors such as type of absorber, thermal conductivity, type of PV module and operating conditions are important parameters that can control the PVT performance. In this paper, an analytical model, using energy balance equations, is studied for PVT with an improved parallel flow absorber. The performance is calculated for a typical sunny weather in Malaysia. It was found that the maximum electrical and thermal efficiencies are 12.9 % and 62.6 %, respectively. The maximum outlet water temperature is 59 oC.

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