The relation between particle density and static elastic moduli of lightweight expanded clay aggregates

Ardakani, Alireza; Yazdani, Mahmoud

doi:10.1016/j.clay.2014.02.017

Cited by 67 publications

(26 citation statements)

References 10 publications

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“…Table 2 illustrates the finding of physical properties of LECA conducted by previous researchers. [6,9,21,22]. The important distinction in stockpile moisture content is that with lightweight aggregates the moisture is largely absorbed into the interior of the particles, whereas with ordinary aggregates it is primarily surface moisture.…”

Section: Water Absorption Characteristicmentioning

confidence: 99%

Physical and Mechanical Properties of Lightweight Expanded Clay Aggregate (LECA)

et al. 2018

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Lightweight aggregate is the generic name of a group of aggregates having a relative density lower than normal aggregates (natural sand, gravel, and crushed stone), sometimes is referred to as low density aggregate. Depending on the source and the method of production, lightweight aggregates exhibit considerable differences in particle shape, texture and properties. Lightweight expanded clay aggregate (LECA) is among the common lightweight materials that have been applied successfully in civil engineering works. Many studies have been conducted to investigate the performances of LECA used in structural and geotechnical applications. They are favourable materials used in projects where weight is an issue because the materials can help reduce dead loads and lateral forces by more than half in installations over structures and those with soft soils. LECA is an eco-friendly nature-based waste product that combines the same benefits as brick tiles. LECA is indestructible, non-combustible, and impervious to attack by dry-rot, wet-rot and insects. This paper focused on the properties of LECA aggregates supplied by LEXCA Sdn. Bhd. through laboratory tests in accordance to the standard specifications. The properties of several LECA produced from different country and production plants are also reviewed for comparative purpose. In addition, the material properties evaluated from previously conducted research also was discussed. It was found that, even though LECA was produced from the same raw materials, it has certain range of property values. The properties of LECA shows their suitability and potential for replacing natural aggregates in many civil engineering works. It is hoped that, the properties presented in this paper could help others who conduct study especially numerical analysis using LECA as geotechnical materials.

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Section: Water Absorption Characteristicmentioning

confidence: 99%

Physical and Mechanical Properties of Lightweight Expanded Clay Aggregate (LECA)

et al. 2018

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“…kg.m -3 (Ardakani and Yazdani, 2014). The other explanation is that a too rich substrate would lead to a rapid leaching of nutrients, which would be a source of carbon and nitrogen pollution for runoff water (Rowe et al, 2006).…”

Section: What Is a Green Roof Substrate?mentioning

confidence: 99%

Role of substrate properties in the provision of multifunctional green roof ecosystem services

Lata

Dusza

Abbadie

et al. 2018

Applied Soil Ecology

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Urban ecosystems are increasingly recognized as key providers of ecosystem services. Among them, green roofs are particularly fashionable, and are in high demand by citizens, politicians, urban planners and architects. Surprisingly, the functioning of green roofs and the impact of substrate type have been so far poorly studied and impede to optimize a green roof and its substrate to provide targeted services. This article thus discusses the different types of substrate that can be used for green roof and outlines the possible consequences for green roof functioning.

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“…Three preliminary mix designs have been prepared in order to find an optimum mix design. [21][22][23] The following table presents the preliminary tests for LECA concrete. 23 The specific weight is not a calculated specific weight in this table, it is the specific weight per volume of 7 days concrete in water.…”

Section: Preliminary MIX Designmentioning

confidence: 99%

Behavioral compression of polyolfin-aramid fiber and glass fiber on flexural strength of leca concrete

Amani¹,

Tayebi²,

Sabamehr³

2018

MOJCE

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The relation between particle density and static elastic moduli of lightweight expanded clay aggregates

Cited by 67 publications

References 10 publications

Physical and Mechanical Properties of Lightweight Expanded Clay Aggregate (LECA)

Physical and Mechanical Properties of Lightweight Expanded Clay Aggregate (LECA)

Role of substrate properties in the provision of multifunctional green roof ecosystem services

Behavioral compression of polyolfin-aramid fiber and glass fiber on flexural strength of leca concrete

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