Contribution of hybrid fibers on the improvement of sand concrete properties: Barley straws treated with hot water and steel fibers

Ammari, Mohammed; Belhadj, B.; Bédérina, Madani; Ferhat, A.; Quéneudec, M.

doi:10.1016/j.conbuildmat.2019.117374

Cited by 32 publications

(13 citation statements)

References 35 publications

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“…Nowadays, concrete additives are being derived from recycling or special treatment of waste materials [ 10 , 11 , 12 ]. Waste should be recycled at first, but their usage in the concrete mix recipe is definitely possible [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

et al. 2021

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The progressive increase in the amount of glass waste produced each year in the world made it necessary to start the search for new recycling methods. This work summarizes the experimental results of the study on mortar samples containing dispersed reinforcement in the form of glass fibers, fully made from melted glass waste (bottles). Mortar mixes were prepared according to a new, laboratory-calculated recipe containing glass fibers, granite as aggregate, polycarboxylate-based deflocculant and Portland cement (52.5 MPa). This experimental work involved three different contents (600, 1200, and 1800 g/m3) of recycled glass fibers. After 28 days, the mechanical properties such as compressive, flexural, and split tensile strength were characterized. Furthermore, the modulus of elasticity and Poisson coefficient were determined. The initial and final setting times, porosity, and pH of the blends were measured. Images of optical microscopy (OM) were taken. The addition of glass fibers improves the properties of mortar. The highest values of mechanical properties were obtained for concrete with the addition of 1800 g/m3 of glass fibers (31.5% increase in compressive strength, 29.9% increase in flexural strength, and 97.6% increase in split tensile strength compared to base sample).

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Section: Introductionmentioning

confidence: 99%

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

et al. 2021

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“…Work [6] is a continuation of the previous studies of the authors. It was carried out on sandy concrete, with reduced density by introducing barley straw treated with hot water.…”

Section: Introductionmentioning

confidence: 69%

Erection of solid columns of one-storey industrial buildings with bridge cranes made of high-strength sandy concrete and its economic efficiency

2021

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The use of high-strength sandy concrete (HSSC) is an alternative to high-strength crushed stone. Its use is profitable for those regions of Russia in which crushed stone is an imported building material. Thus, crushed stone is supplied to the Republic of Tatarstan (RT) from the Ural, and the local reserves of sand are significant. Authors presented the results of studies to determine the economic efficiency of solid columns’ erection in one-story industrial buildings with bridge cranes according to the 1.424.1-5 series from HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B80 classes. Studies have shown that in relation to Kazan, the use of HSSC of HSSC60 and HSSC80 classes in comparison with heavy concrete of B20...B40 classes, depending on the size of the span, column spacing, floor height and lifting capacity of cranes, can reduce steel consumption by 43.2…71.5 %. At the same time, the total cost of materials (steel and concrete) when using heavy concrete of B20...B40 classes is 1.7 %...38.1 % lower than with HSSC60 and HSSC80. This is due to the sharp rise in the cost of concrete in the Russian market in the third quarter of 2002 and continuing to the present (second quarter of 2021). When recalculated before the indicated price increase, the use of HSSC60 and HSSC80 in comparison with heavy concrete of B20…B40 classes gives a decrease in the total cost of materials by 1.9...34.5 %. The results obtained are novel because in the scientific and technical literature there is no information about the design of these columns from the HSSC.

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“…Note that the density of concrete is very important for the evaluation of thermal conductivity. Many previous studies have shown that there is a positive relationship between the density of sand concrete and thermal conductivity (Bederina et al, 2016;Ammari et al, 2020;Belhadj et al, 2015) According to Al Rim et al (1999), the thermal conductivity as a function of density (k = f(r )), is a linear equation, for a clay-cement-wood composite, in the density range between 370 and 1,010 kg/m 3 . Nevertheless, the relationship between thermal conductivity and density is an exponential function for lightweight concrete, in the range of densities between 700 and 1,800 kg/m 3 (Lijiu et al, 2005).…”

Section: Thermal Propertiesmentioning

confidence: 99%

Influence of glass powder incorporation on the physical-mechanical properties of sand concrete

Ammari

Tobchi²,

Amrani³

et al. 2021

WJE

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Purpose This study is part of the valorization of local materials and the reuse of industrial waste in construction. This study aims to improve the physical-mechanical properties of sand concrete. This work is a continuation of previous studies conducted on sand concrete, the purpose of which is to introduce industrial waste into this material. For this purpose, a glass waste in powder form is added. Design/methodology/approach This study is focused on the effect of adding glass powder (GP) whose mass percentage varies from 0 to 40% with an interval of 10% to target the right composition that ensures the best compromise between the characteristics studied. Findings The results found show that the workability and density of the studied concretes decreased with increasing GP dosage. Indeed, the optimal addition which constitutes the best compromise between the studied properties is 10% of GP. Improvements of up to about 9% in the case of flexural strength and about 18% in the case of compressive strength. The thermal conductivity has been reduced by 12.74%, the thermal diffusivity which characterizes the notion of thermal inertia has been reduced by about 4% and the specific heat mass has been reduced by 7.80%. Also, the shrinkage has been reduced by about 20%. The microstructure of the studied composite shows a good homogeneity between the aggregates. Finally, the addition of GP to sand concrete gives very encouraging results. Originality/value The interest of this study is in two parts. The first one is the exploitation of local materials: dune sand, river sand and limestone filler to meet the growing demand for construction materials. And the second one is the reuse of glass waste, in the form of powder (GP), to solve the environmental problem. All this participates in the improvement of the physical-mechanical properties of sand concrete and the extent of its response to the development of an economical structural concrete.

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Contribution of hybrid fibers on the improvement of sand concrete properties: Barley straws treated with hot water and steel fibers

Cited by 32 publications

References 35 publications

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

Erection of solid columns of one-storey industrial buildings with bridge cranes made of high-strength sandy concrete and its economic efficiency

Influence of glass powder incorporation on the physical-mechanical properties of sand concrete

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