Effect of Alkali - Activated Natural Pozzolan on Mechanical Properties of Geopolymer Concrete

Zainab M. Mohammed; Ali A. Abdulhameed; Hamid K. Kazim

doi:https://doi.org/10.2478/cee-2022-0029

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Publication Date

Wed Jun 01 2022

Journal Name

Civil And Environmental Engineering

Volume

18

DOI

https://doi.org/10.2478/cee-2022-0029

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Effect of Alkali - Activated Natural Pozzolan on Mechanical Properties of Geopolymer Concrete

Zainab M. Mohammed

Ali A. Abdulhameed

Hamid K. Kazim

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AbstractAs an alternative to Ordinary Portland Cement (OPC), the alkali-activated binders have been developed with better technical characteristics and more extended durability. The Alkali-Activated Iraqi Natural Pozzolans (AANP) could produce geopolymer cementation building materials and make them ecologically acceptable. The primary advantage of geopolymer cement is that it has a lower environmental effect that contributes to it. The engineering characteristics of geopolymer concrete produced using activated Iraqi natural Pozzolan are summarized in this research. The mechanical properties, modulus of elasticity, and ultrasonic pulse velocity of various concrete mixes were determined via experimental study. The impact of essential variables like water/binder ratios <italic>w</italic>/<italic>b</italic> % and curing conditions on the characteristics of geopolymer concrete have been identified using test data. The findings indicate that concrete and mortar produced with alkali-activated natural pozzolans have flexibility and moderate to high strength.

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Publication Date

Sun Jan 01 2012

Journal Name

Evidence-based Complementary And Alternative Medicine

Gelam Honey Inhibits the Production of Proinflammatory, Mediators NO,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow><mml:mtext>PGE</mml:mtext></mml:mrow><mml:mtext>2</mml:mtext></mml:msub></mml:mrow></mml:math>, TNF-α, and IL-6 in Carrageenan-Induced Acute Paw Edema in Rats

Saba Zuhair

Kamaruddin

Suzana

Yasmin Anum

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Natural honey is well known for its therapeutic value and has been used in traditional medicine of different cultures throughout the world. The aim of this study was to investigate the anti-inflammatory effect of Malaysian Gelam honey in inflammation-induced rats. Paw edema was induced by a subplantar injection of 1% carrageenan into the rat right hind paw. Rats were treated with the nonsteroidal anti-inflammatory drug (NSAID) Indomethacin (10 mg/kg, p.o.) or Gelam honey at different doses (1 or 2 g/kg, p.o.). The increase in footpad thickness was considered to be edema, which was measured using a dial caliper. Plasma and paw tissue were collected to analyze the production of inflammatory mediators, such as NO, PGE₂

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