Development of lightweight concrete with high resistance to water and chloride-ion penetration

Liu, Xuemei; Chia, Kok-Seng; Zhang, Min-Hong

doi:10.1016/j.cemconcomp.2010.08.005

Cited by 94 publications

(59 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The water absorption of LWA is normally an influential factor in the lightweight aggregates concrete design and production, since LWA absorb a certain amount of free water from the mixture before setting. It is shown that the water absorption of lightweight aggregates could have a negative influence on the workability, if mixing them with other materials under dry conditions prior to adding water [1,13,20,21]. However, this negative effect depends not only on the used amount of the lightweight aggregates, but also clearly on their type and production process.…”

Section: Methodsmentioning

confidence: 99%

“…With the cement content of 500 kg/m 3 and unit density of 1400 kg/m 3 , applying expanded clay and expanded glass as lightweight aggregates, the 28-day compressive strength of the LWAC reached 24 N/mm 2 . In Liu et al [13], Chia and Zhang [14], Nyame [15], Bentz [16] and Liu et al [17], the durability of lightweight concrete was addressed, but controversial findings with regard to the effect of LWA on permeability of concrete were reported. Nevertheless, so far there is still no systematic study on LWAC regarding the mix design methodology.…”

Section: Introductionmentioning

confidence: 99%

“…A linear relation between the cement content and thermal conductivity of the LWAC was found, the thermal conductivity increased from 0.22 to 0.30 W/(m K) as the cement content increased from 250 to 400 kg/m 3 . Liu et al [13] developed a lightweight aggregates concrete with high resistance to water and chloride-ion penetration. With the cement content of 500 kg/m 3 and unit density of 1400 kg/m 3 , applying expanded clay and expanded glass as lightweight aggregates, the 28-day compressive strength of the LWAC reached 24 N/mm 2 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of cement-based lightweight composites – Part 1: Mix design methodology and hardened properties

Spiesz

Brouwers

2013

Cement and Concrete Composites

134

View full text Add to dashboard Cite

a b s t r a c tThis article aims at the development of durable cement-based lightweight aggregate composites, with a good balance between the thermal and mechanical properties. The mixtures are developed with the optimized packing applying the modified Andreasen and Andersen model, to obtain the optimal target grading curve of all the solids in the mixture. A lightweight material produced from recycled glass is used as the lightweight aggregates (LWA) in order to obtain the desired low thermal conductivity.The properties of the designed composites, including the flowability and relative viscosity in fresh state, and the porosity, strength and thermal properties in hardened state are investigated. The porosity of the developed composites is studied by both modeling and experiments. Results indicate that there is a certain amount of closed internal LWA pores in the composites, which contributes positively to a better thermal insulation property. The developed composites have a low thermal conductivity while still retaining sufficient strength. Therefore, the designed composite can be used monolithically as both load-bearing element and thermal insulator.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of cement-based lightweight composites – Part 1: Mix design methodology and hardened properties

Spiesz

Brouwers

2013

Cement and Concrete Composites

134

View full text Add to dashboard Cite

show abstract

“…The density and compressive strength are also reduced to 30%. Liu et al, [10] developed a lightweight aggregate concrete with high resistance to penetration of water and chloride ions. The results were the cement content 500kg/m³ and unit density of 1400kg/m³ by applying expanded clay and expanded glass.…”

Section: Introductionmentioning

confidence: 99%

Properties of Cellular Concrete for Filters

Maruyama¹,

Camarini²

2015

IJET

View full text Add to dashboard Cite

Abstract-Considering the trends of new materials in Construction, the lightweight concrete with a density between 400 and 1800 kg/m³ has been the subject of several studies with emphasis on particle size distribution of aggregates and their raw materials. Some of the advantages of cellular concrete are its lightness, resistance to freezing and thawing, good thermal insulation and acoustics. It can be used as blocks, precast masonry panels, filling and regularization of slabs to be waterproofed. The aim of this work is to study the material proportion that composes the cellular concrete, such as cement, sand, admixtures and water. It was analyzed the composite in the fresh and hardened state. Properties, such as compressive strength, water permeability of the plates, water absorption by immersion and by capillary rise were determined. The tests followed the Brazilian Standards and took place in cylindrical, prismatic and cubic specimens.

show abstract

“…Here, Liaver R (Ilmenau, Germany), an expanded glass granulate, is used as lightweight aggregates for lightweight concrete specimens according to its very low density and water absorption characteristics; this material is produced by being ground, granulated, distended and vitrified in a rotary kiln at 750 • C to 900 • C, and this produces very light granules measuring between 100 µm and 16 mm grain diameter. [19]. Different gradings following the modified Andreasen and Andersen dense packing model [20][21][22][23] are adopted to produce the lightweight specimens with densely packed Liaver R particles.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Gradings of Lightweight Aggregates on the Properties of Concrete

2017

View full text Add to dashboard Cite

Lightweight aggregate concrete is a material with very low density and good thermal insulation, and several types of lightweight aggregates have been used for lightweight concrete. Since the characteristics of lightweight aggregates strongly affect the properties of lightweight concrete, a proper consideration for the use of lightweight aggregate is very important for development of lightweight materials. In particular, the sizes and spatial distributions of lightweight aggregates can influence the material responses of lightweight concrete, such as compressive strength and thermal conductivity. In this study, different types of gradings of lightweight aggregates are adopted to investigate the effect of gradings on the material properties. Liaver R , an expanded glass granulate, is used as a lightweight aggregate for the specimens. Virtual models of the lightweight specimens with different gradings are numerically generated, and both mechanical and thermal properties are evaluated using experimental and numerical approaches for more detailed investigation. The obtained results can be utilized to suggest an optimal grading that satisfies both the mechanical and thermal properties of lightweight concrete specimen.

show abstract

Development of lightweight concrete with high resistance to water and chloride-ion penetration

Cited by 94 publications

References 8 publications

Development of cement-based lightweight composites – Part 1: Mix design methodology and hardened properties

Development of cement-based lightweight composites – Part 1: Mix design methodology and hardened properties

Properties of Cellular Concrete for Filters

Effect of Different Gradings of Lightweight Aggregates on the Properties of Concrete

Contact Info

Product

Resources

About