Rate of pozzolanic reaction of metakaolin in high-performance cement pastes

Poon, Chi Sun; Lam, L.; Kou, Shi Cong; Wong, Yi Lin; Wong, R.C.K.

doi:10.1016/s0008-8846(01)00581-6

Cited by 373 publications

(181 citation statements)

References 17 publications

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“…The weight loss before and after decomposition of calcium hydroxide at about 450°C and the improvement in compressive strength by pozzolanic reaction was found to present a significant correlation. The same tendency was also observed from metakaolin, as expected and proved by other literatures (Poon et al 2001;Sabir et al 2001).…”

Section: Discussionsupporting

confidence: 91%

Evaluation of Pozzolanic Activity for Effective Utilization of Dredged Sea Soil

Moon

Kim

Lee

et al. 2017

Int J Concr Struct Mater

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In this work, pozzolanic activities of dredged sea soil from two different sources (South Harbor at Busan and Jangsaengpo Harbor at Ulsan) in Republic of Korea were investigated. Dredged sea soil used for this work has passed through a patented purification process, and particle size distribution, X-ray fluorescence, X-ray diffraction, and thermogravimetry/differential thermal analysis (TG/DTA) were utilized to understand its chemical and mineralogical characteristics. Temperature for heat treatment of dredged sea soil were determined using data obtained from TG/DTA, and pozzolanic activities of dredged sea soil samples were investigated by tracking the amount of calcium hydroxide spent for pozzolanic reaction as well as by monitoring the enhancement on 28 day compressive strength. According to the results, dredged sea soil samples from Jangsaengpo Harbor, which contains some amount of silt sized minerals, showed clear pozzolanic activity after heat treatment at 500°C. However, dredged sea soil samples from South Harbor did not exhibit strong pozzolanic reaction due to its larger particle size. At least, it was found that dredged sea soil samples have possibility to be used as a pozzolanic material after proper heat treatment if the size distribution of the particle contains certain amount of silt.

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Section: Discussionsupporting

confidence: 91%

Evaluation of Pozzolanic Activity for Effective Utilization of Dredged Sea Soil

Moon

Kim

Lee

et al. 2017

Int J Concr Struct Mater

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“…Therefore the use of metakaoiln proves economical over that of silica fume. Previously, researchers have shown a lot of interest in MK as it has been found to possess both pozzolanic and microfiller characteristics (Poon et al 2001;Wild and Khatib 1997;Wild et al 1996). It has also been used successfully for the development of high strength self compacting concrete using mathematical modeling (Dvorkin et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Metakaolin Content on the Properties of High Strength Concrete

Dinakar

Sahoo

Sriram

2013

Int J Concr Struct Mater

228

113

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This study presents the effect of incorporating metakaolin (MK) on the mechanical and durability properties of high strength concrete for a constant water/binder ratio of 0.3. MK mixtures with cement replacement of 5, 10 and 15 % were designed for target strength and slump of 90 MPa and 100 ± 25 mm. From the results, it was observed that 10 % replacement level was the optimum level in terms of compressive strength. Beyond 10 % replacement levels, the strength was decreased but remained higher than the control mixture. Compressive strength of 106 MPa was achieved at 10 % replacement. Splitting tensile strength and elastic modulus values have also followed the same trend. In durability tests MK concretes have exhibited high resistance compared to control and the resistance increases as the MK percentage increases. This investigation has shown that the local MK has the potential to produce high strength and high performance concretes.

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“…The addition of vermiculite intensifies the water-retentive characteristic of a material. Metakaolin (MK) typically comprises 50%-55% SiO2 and 40%-45% Al2O3 [80], with small amounts of Fe2O3, TiO2, CaO, and MgO. MK is a common raw material used to prepare geopolymers.…”

Section: Geopolymersmentioning

confidence: 99%

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

et al. 2016

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Passive cooling techniques have been used mostly in countries with hot and arid climates such as Iran, Egypt, and India. However, the use of this important technology has not been seriously considered until a time of energy crisis, and consequently, environmental crisis scenarios, emerge. Scholars have renewed their interest in investigating passive cooling technology, particularly the aspects of new materials, thermal comfort, energy efficiency, new designs, climate, and environmental considerations. This review paper highlights the opportunities to use green materials, such as geopolymers, as evaporative cooling materials with different types of industrial and agricultural waste products as components. Novel ideas for passive cooling design using ancient and nature-inspired concepts are also presented to promote green technology for future applications.

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Rate of pozzolanic reaction of metakaolin in high-performance cement pastes

Cited by 373 publications

References 17 publications

Evaluation of Pozzolanic Activity for Effective Utilization of Dredged Sea Soil

Evaluation of Pozzolanic Activity for Effective Utilization of Dredged Sea Soil

Effect of Metakaolin Content on the Properties of High Strength Concrete

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

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