lightweight aggregate

lightweight aggregate

[′līt‚wāt ′ag·rə·gət]
(materials)
A lightweight inert material, such as foamed slag, vermiculite, clinker, and perlite, used in unreinforced concrete for making structures of low weight and high insulation.

lightweight aggregate

Aggregate of low-bulk specific gravity, such as expanded or sintered clay, foamed slag, fly ash, exfoliated vermiculite; used as an ingredient in lightweight concrete.
References in periodicals archive ?
The company focuses on aircrete and lightweight aggregate concrete including in the form of blocks for constructing interior and exterior walls, as well as roof components and reinforced beams for interiors.
The sand and gravel and lightweight aggregate production portfolio includes legacy Trinity Industries plants, along with sites previously under Oldcastle Architectural/Big River and Texas Industries.
It was also found that the properties of aggregates made from crushed concrete and the effect of the aggregates on the new concrete (strength, modulus of elasticity, etc.) resemble those of lightweight aggregate concrete.
LWC involves different types of natural and artificial lightweight aggregates. In this study, a specific type of lightweight aggregate called Expanded Polystyrene (EPS) beads has been investigated.
Using the lightweight aggregate (LWA) together with normal-weight fine aggregate in concrete mixtures is an effective method to produce lightweight aggregate concrete (LWAC).
presented a state-of-the art report on fiber-reinforced lightweight aggregate concrete masonry.
Keywords: lightweight concrete, lightweight aggregate, expanded glass, mechanical properties, compressive strength, flexural strength, freeze-thaw resistance, alkaline corrosion.
Based on the classification of lightweight concrete according to the level of compressive strength and aggregate type by Mindess and Young [4], lightweight aggregate concrete using artificial lightweight aggregate (ALWA) or lightweight coarse sintered fly ash and foamed slag aggregates can produce compressive strength values of 17-41 MPa with a density range of 1500-2000 kg/[m.sup.3] [4].
Eight full scale rectangular cross-section columns filled with lightweight aggregate concrete and normal weight aggregate concrete, four specimens each, were tested under axial loads for comparison purposes.
LWC can either be foamed concrete, lightweight aggregate concrete or autoclaved aerated concrete.

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