Effect of microstructure on the mechanical and thermal properties of lightweight concrete prepared from clay, cement, and wood aggregates

Bouguerra, Ahmed; Ledhem, A; Barquin, F. de; Dheilly, Rose-Marie; Quéneudec, M.

doi:10.1016/s0008-8846(98)00075-1

Cited by 143 publications

(79 citation statements)

References 18 publications

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“…The use of industrial by-products to reduce the thermal conductivity of cement-based materials has significant advantages associated with improved resource efficiency. Relevant research has included work on lightweight cement-based materials containing waste glass, fly ash, silica fume, tyre rubber, expanded clay, wood and paper (44)(45)(46)(47)(48).…”

Section: Introductionmentioning

confidence: 99%

Lightweight mortars containing expanded polystyrene and paper sludge ash

Ferrándiz-Mas

Bond

García-Alcocel

et al. 2014

Construction and Building Materials

131

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The objective of this research was to develop lightweight cement mortars with good thermal-insulation properties by incorporating expanded polystyrene (EPS) and paper sludge ash (PSA), both of which are problematic waste materials. The mortars formed had low thermal conductivity and low bulk density compared to control samples. Ground EPS produced lower thermal conductivity samples than powdered EPS. Resource efficient mortars containing up to 20% PSA, and 60% of EPS are considered suitable for use in rendering and plastering applications.

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Section: Introductionmentioning

confidence: 99%

Lightweight mortars containing expanded polystyrene and paper sludge ash

Ferrándiz-Mas

Bond

García-Alcocel

et al. 2014

Construction and Building Materials

131

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“…e microstructures analysed are systems with a cementitious CPA CEM I 52.5 (EN 196-1) and argillaceous matrix consisting exclusively of kaolin (with an absolute density, measured using a water pycnometer, of 2.65 g/cm 3 ) [48,49]. e wood aggregates (Picea wood) have sizes between 3 and 8 mm: A-1 (clay cement matrix) and A-2 (clay cement matrix + 30% wood aggregates).…”

Section: First Data Set (A)mentioning

confidence: 99%

“…Other characteristics are illustrated in the reference. For all systems, capillary absorption and mercury intrusion porosimetry (MIP) tests to measure sorptivity values and porosity (pore size distribution and pore size range) have been conducted [48][49][50][51][52].…”

Section: Ird Data Set (C)mentioning

confidence: 99%

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Water Absorption Properties of Cement Pastes: Experimental and Modelling Inspections

Casnedi

Cocco

Meloni

et al. 2018

Advances in Materials Science and Engineering

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An intermingled fractal units' model is shown in order to simulate pore microstructures as pore fraction and pore size distribution. is model is aimed at predicting capillary water absorption coefficient and sorptivity values in cement pastes. e results obtained are in good agreement with the experimental ones. For validating this model, a comparison with other procedures has been shown. It is possible to establish that the newly proposed method matches better with the experimental results. at is probably due to the fact that pore size distribution has been considered as a whole. Moreover, even though the proposed model is based on fractal base units, it is able to simulate and predict different properties as well as nonfractal porous microstructure.

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“…This hot-wire method has been developed for measurements in electro-conducting liquid [3][4][5][6] and in highly corrosive liquids [7][8][9]. Actually, the use of the transient hot-wire method is extended to granular materials [10,11], in solid geomaterials [12][13][14][15], and in soils by pedologists [16][17][18][19]. The texturemoisture and thermal conductivity relationship have been studied firstly on a model material composed of glass bead assemblages to demonstrate the role of porosity and saturation index.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity measurement in clay dominant consolidated material by Transient Hot-Wire method.

Garnier

Gallier

Mercx

et al. 2010

EPJ Web of Conferences

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Abstract. The transient hot-wire (THW) technique is widely used for measurementsof the thermal-conductivity of most fluids and some attempts have also been carried out for simultaneous measurements of the thermal-diffusivity with the same hot wire. This technique was also tried to determine thermal properties of soils by the mean of probes which can be considered as wire with some assumptions. The purpose of this paper is to validate the thermal conductivity measurement by the THW technique in geomaterials, composed of compacted sand + clay mineral that can be used for earth construction (Compacted Earth Brick). The thermal transfer behaviors are mainly governed by the texture and moisture of the geomaterials. Thus the investigations were performed (1) in media made of glass beads of different diameters in dry and saturated state in order to observe the role of grain sizes and saturation state on the wire temperature (∆t) measurements and (2) in the compacted clay-geomaterial at different moisture states. The ∆t / ln(t) diagrams allow the calculation of two thermal conductivities. The first one, measured in the short time acquisition (< 1s), characterizes the microtexture of the material and its hydrated state. The second one, measured for longer time acquisitions, characterizes the mean thermal conductivity of the material.

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Effect of microstructure on the mechanical and thermal properties of lightweight concrete prepared from clay, cement, and wood aggregates

Cited by 143 publications

References 18 publications

Lightweight mortars containing expanded polystyrene and paper sludge ash

Lightweight mortars containing expanded polystyrene and paper sludge ash

Water Absorption Properties of Cement Pastes: Experimental and Modelling Inspections

Thermal conductivity measurement in clay dominant consolidated material by Transient Hot-Wire method.

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