Comparative study of the initial surface absorption and chloride diffusion of high performance zeolite, silica fume and PFA concretes

Chan, Sammy Yin Nin; Ji, Xihuang

doi:10.1016/s0958-9465(99)00010-4

Cited by 158 publications

(65 citation statements)

References 6 publications

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“…Another reason of increased pseudo-plasticity response in the presence of zeolite compared to similar mixtures without zeolite may also be attributed to the fact that zeolite could physically adsorb moisture owing to its high water adsorption capacity due to its large surface area and large number of micro-passages and cavities in the zeolite crystal structure [30]. Weakly bonded water in the structure of natural zeolite may not be released at lower shear stresses.…”

Section: Rheological Propertiesmentioning

confidence: 99%

Evaluation of natural zeolite as a viscosity-modifying agent for cement-based grouts

Şahmaran

Özkan

Keskin

et al. 2008

Cement and Concrete Research

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The effects of natural zeolite on the rheological and workability properties of the grout mixtures were studied. Setting times of grouts were also determined as part of the experimental study. For comparison, grout mixtures were also prepared with a commercially available viscosity modifying admixture (VMA). The experimental results show that addition of natural zeolite modifies both the rheological and workability properties of grouts. For a constant superplasticizer (SP) content, an increase in the zeolite amount significantly increases the yield stress, the apparent and plastic viscosity, and reduces the fluidity and deformability. Moreover, an increase in the amount of SP causes a significant reduction in both the yield stress and plastic viscosity of the grouts. It was also observed that, grouts prepared with natural zeolite addition have a pseudo-plastic behavior, and shear-thinning behavior increases with an increase in the zeolite amount. Therefore, it has been shown that using natural zeolite as a VMA it is possible to obtain grouts that have satisfactory rheological properties, especially if natural zeolite is used in combination with a superplasticizer.

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Section: Rheological Propertiesmentioning

confidence: 99%

Evaluation of natural zeolite as a viscosity-modifying agent for cement-based grouts

Şahmaran

Özkan

Keskin

et al. 2008

Cement and Concrete Research

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“…Valipour et al [50] and Chan [90] were agreed that, to improve this characteristic, cement mixtures should not exceed 45% of zeolitic addition. While if what is desired is to avoid the carbonation process of the cement, the additions should not exceed 30% [62,91,92] because this process is more evident in the early hydration phase, but it reduces with the passage of time.…”

Section: Elaboration Methodsmentioning

confidence: 98%

Characterizations and Industrial Applications for Cement and Concrete Incorporated Natural Zeolite

Domínguez¹,

Abdellaoui²,

Abatal³

et al. 2018

Zeolites and Their Applications

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Zeolites have been widely used in various industries, leading to a high commercial value; this is mainly due to the wide diversity of naturally occurring species and the ability to synthesize new types. In the cement and concrete industry, natural zeolite is a popular natural pozzolanic material in some regions of the world owing to their economic, environmental, and technical advantages, among others, used pozzolanic materials. Many works have reported the use of natural zeolite as substituent material for cement in mortar and concrete. Generally, the use of natural zeolite can overcome environmental and economic problems associated with the use of high quantity of cement; furthermore, it is shown a strength enhancement and durability improvement properties of cement and concrete composites. In this context, this chapter strives to review the application of natural zeolite as pozzolan in cement and concrete composites, its characteristic, its proper incorporation, and each of the influencing parameters. In addition, the elaboration methods, textural and mechanical characterization, and applications of these composites will be treated.

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“…According to Najimi et al [24], natural zeolite can be properly used as an SCM in normally consolidated concrete, considering the environmental protection and sustainable development. Chan and Ji [25] report that the pozzolanic reactivity of natural zeolite is between that of silica fume and fly ash. This paper is aimed at the utilization of zeolite as a perspective kind of SCM and its influence on the long-term (up to three years) properties of concrete, since there is a lack of information about the long-term properties.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Properties of Cement-Based Composites Incorporating Natural Zeolite as a Feature of Progressive Building Material

Sičáková

Špak

Kozlovská

et al. 2017

Advances in Materials Science and Engineering

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This study is aimed at the utilization of natural zeolite as a prospective type of Supplementary Cementitious Material in connection with the innovations of construction solutions through the materials. The influence of zeolite on several properties of cement-based composites is studied. Basic characteristics of input powdery materials as well as the technological parameters of zeolite tested on mortar containing 50% of cement replacement are presented. The technical parameters of concrete containing 8, 13, and 25% of cement replacement by zeolite are presented as well. The paper is valuable due to the three-year testing period. The density of the hardened concrete was found to be decreasing with increasing zeolite content. While no significant differences in compressive strength were found after 28 days, differences between individual samples were clear after the long-term period. The presence of zeolite influenced the compressive strength positively in the case of the 8% and 13% replacement, while the higher proportion of natural zeolite (25%) caused lower compressive strength after 28 days but was similar to the reference concrete after three years. A major increase in strength was detected for all samples in the long-term period. It confirms the long-term potential of zeolite for strength improvement.

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Comparative study of the initial surface absorption and chloride diffusion of high performance zeolite, silica fume and PFA concretes

Cited by 158 publications

References 6 publications

Evaluation of natural zeolite as a viscosity-modifying agent for cement-based grouts

Evaluation of natural zeolite as a viscosity-modifying agent for cement-based grouts

Characterizations and Industrial Applications for Cement and Concrete Incorporated Natural Zeolite

Long-Term Properties of Cement-Based Composites Incorporating Natural Zeolite as a Feature of Progressive Building Material

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