Durability of Fly Ash–Based Geopolymer Structural Concrete in the Marine Environment

Reddy, D. V.; Edouard, Jean-Baptiste; Sobhan, Khaled

doi:10.1061/(asce)mt.1943-5533.0000632

Cited by 142 publications

(71 citation statements)

References 1 publication

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“…While performance of fly ash-based GPC is Cement and Concrete Research 88 (2016) [96][97][98][99][100][101][102][103][104][105][106][107] observed to be similar to PCC in passive state (i.e. in the absence of chloride ions) [25,28], an (at least) equivalent performance of low-calcium fly ash-based GPC compared with PCC in severe marine environments during the propagation phase of corrosion is emphasized [28][29][30].…”

Section: Introductionmentioning

confidence: 90%

Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete

Babaee

Castel

2016

Cement and Concrete Research

156

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Section: Introductionmentioning

confidence: 90%

Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete

Babaee

Castel

2016

Cement and Concrete Research

156

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“…fly ash) results in a dramatic reduction in CO2 emissions relatively to cement production. However, the advantages of AA over cement are not only environmental, since it has also proved to be more effective in terms of durability (Fernández-Jimenez et al, 2006b;Law et al, 2012;Reddy et al, 2013) and at least as effective in terms of mechanical behavior (Fernández-Jimenez et al, 2006c;Yazıcı et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Alkali-Activated Soil Ash versus Soil Cement

Rı́os

Cristelo

Fonseca

et al. 2016

J. Mater. Civ. Eng.

117

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Alkaline activation of fly ash was used to improve the mechanical performance of a silty sand, considering this new material as a replacement of soil-cement applications namely bases and subbases for transportation infrastructures. For that purpose, specimens were molded from mixtures of soil, fly ash and an alkaline activator made from sodium hydroxide and sodium silicate. Uniaxial compression tests showed that strength is highly increased by the addition of this new binder. The results described a high stiffness material, with an initial volume reduction followed by significant dilation. All specimens have clearly reached the respective yield surface during shearing, and peak strength Mohr-Coulomb parameters were defined for each mixture. The evolution of the microstructure during curing, responsible for the mechanical behavior detected in the previous tests, was observed by scanning electron microscopy. These results were compared to soil-cement data obtained previously with the same soil at similar compaction conditions. The main difference between both binders was the curing rate, with alkali activated specimens showing a more progressive and long-lasting strength increase. This was analyzed taking into account the chemical process responsible for the behavior of the mixtures.

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“…Curing with a temperature of 60° C for 24 hours raises tensile strength as much as 36.07% of geopolymer concrete. Reddy et al [15] found similar trend in their experimental program were accelerated corrosion test in natural sea water.…”

Section: Oven-sea (O-l)mentioning

confidence: 60%

The Effect of Corrosive Environment on Geopolymer Concrete Tensile Strength

et al. 2017

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Abstract. This study has the purpose to explore the potential of geopolymer concrete tensile strength in particular on the effects of corrosive environments. Geopolymer concrete, concrete technology used no OPC that has advantages, one of which is durability, especially for corrosive seawater environment. In addition, geopolymer concrete with polymerization mechanism does not require large energy consumption or an environmentally friendly concept. Geopolymer concrete in this study is using a type C fly ash from PT. International Power Mitsui Operation & Maintenence Indonesia (IPMOMI) Paiton. The type of alkaline activator used NaOH (14 molar) and Na 2 SiO 3 . Coarse and fine aggregate used are local aggregate. Geopolymer concrete molded test specimen with dimensions of (10 x 20) cm cylinder, further heating and without heating, then maintained at room temperature and seawater up to 28 days. Then to determine the mechanical properties, the tensile strength testing is done with reference. This result of study indicates the curing of geopolymer concrete at 60 ° C for 24 hours to raise the tensile strength of geopolymer concrete.

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Durability of Fly Ash–Based Geopolymer Structural Concrete in the Marine Environment

Cited by 142 publications

References 1 publication

Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete

Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete

Structural Performance of Alkali-Activated Soil Ash versus Soil Cement

The Effect of Corrosive Environment on Geopolymer Concrete Tensile Strength

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