Effect of the heat curing on strength development of self-compacting mortars containing calcined silt of dams and Ground Brick Waste

Safi, Brahim; Ghernouti, Youcef; Rabehi, Bahia; Aboutaleb, Djamila

doi:10.1590/s1516-14392013005000094

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…[8][9][10][11][12][13][14] P. B. Cachim 15 reported that crushed bricks could be used as a partial replacement for natural coarse aggregate without a reduction in concrete properties for a 15 % replacement ratio; however, a reduction up to 20 % has been noted for a 30 % replacement ratio.…”

Section: Introductionmentioning

confidence: 99%

Valorization of brick wastes in the fabrication of concrete blocks

Ghernouti¹,

Rabehi²,

Bouziani³

et al. 2016

Mater. Tehnol.

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This work focuses on the reuse of recycled brick waste (RBW) as aggregates in the fabrication of concrete blocks. The experimental study was focused on six different concrete compositions with a w/c ratio of 0.56, a relatively constant compactness and a slump value of zero. The six compositions consist on a control concrete with natural sand and five compositions with 10 %, 20 %, 30 %, 40 % and 50 % of RBW as a partial substitute for the natural sand. The physical and mechanical properties of concrete blocks were studied, analyzed and compared. The obtained results showed that it is possible to manufacture concrete blocks based on RBW, and that the compressive strengths of these concrete blocks are comparable to that of the control concrete, but with an appreciable reduction in weight. The blocks made with 30 % of RBW showed an improvement in the compressive strength of 42 % and a reduction in weight of 11 % compared to the control concretes. Keywords: recycled brick waste, concrete block, compactness, slump, mechanical strength Delo je usmerjeno v ponovno uporabo recikliranih odpadkov opeke (RBW) kot sestavina pri izdelavi betonskih zidakov. Eksperimentalno delo je bilo usmerjeno v {est razli~nih sestav betona z razmerjem w/c je 0,56, z relativno enako kompaktnostjo in brez zmanj{anja vrednosti. [est sestav je predstavljalo kontrolni beton z naravnim peskom in pet sestav z dodatkom 10 %, 20 %, 30 %, 40 % in 50 % RBW, kot delnim nadomestkom za naravni pesek. Prou~evane, analizirane in primerjane so fizikalne in mehanske lastnosti cementnih zidakov. Dobljeni rezultati so pokazali, da je mogo~a izdelava cementnih zidakov na osnovi RBW. Tla~ne trdnosti teh betonskih zidakov so primerljive s tistimi iz kontrolnega betona, ob~utno pa je zmanj{anje te`e. Zidaki izdelani z 30 % RBW so pokazali izbolj{anje tla~ne trdnosti za 42 % in zmanj{anje te`e za 11 %, v primerjavi z zidaki iz kontrolnega betona. Klju~ne besede: reciklirani odpadki iz opeke, betonski zidak, kompaktnost, padec vrednosti, mehanska trdnost

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Section: Introductionmentioning

confidence: 99%

Valorization of brick wastes in the fabrication of concrete blocks

Ghernouti¹,

Rabehi²,

Bouziani³

et al. 2016

Mater. Tehnol.

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“…For flexural strength of mortars having undergone heat treatment, continuous improvement was observed compared to mortars up to 14 days without treatment, or it was found the opposite effect, this can be explained by the fragility of specimens from this age processing and ripening (Figure 5), it has been proven in the work of Safi et al, (2013). The temperature has a beneficial effect on the resistance of mortars.…”

Section: Scm(cps) Without Treatment Scm(cps) With Treatmentmentioning

confidence: 88%

Effect of Natural Pozzolan and Calcined Paper Sludge as Pozzolanic Additions on the Physicals and Mechanicals Properties of Heat Treated Self-Compacting Mortars

Ghernouti¹,

Safi²,

Rabehi³

2019

J. build. mater. struct.

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The aim of this research work was to investigate the effect of thermal treatment on strength development of self-compacting mortars (SCMs) based on two pouzolanic materials: Natural Pozzolan and calcined paper waste sludge, were used in the binders of SCMs. To evaluate the effect of heat treatment, a serial of the specimens were exposed to room temperature and another serial were exposed to heating regime (at temperature 60°C for a period of 14 h). The fresh and hardened properties of all mortars were evaluated. the obtained result show that the mechanical strength at 14 days of all mortar treated are almost similar or sometimes better to those not treated mortars tested at 28 days, which reduces the curing time for precast elements.

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“…Keeping in view the most important issues in today's construction world is the ability to make concrete with good spread ability in congested or remote areas and also not able to cure concrete during the most important initial hydration stage. It is felt that there is an urgency to develop concrete that can hydrate in itself without external source of water and can perform well in the fresh and hardened state 9–12 . As concrete structures have evolved into more complex ones over the decades, the amount of reinforcement utilized has considerably gone up.…”

Section: Introductionmentioning

confidence: 99%

“…It is felt that there is an urgency to develop concrete that can hydrate in itself without external source of water and can perform well in the fresh and hardened state. [9][10][11][12] As concrete structures have evolved into more complex ones over the decades, the amount of reinforcement utilized has considerably gone up. This has reduced the space between adjacent reinforcement bars making them more congested.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on strength and durability characteristics of self‐curing self‐compacting concrete

Mohan¹,

Kumar²,

Manoj³

2022

Structural Concrete

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The present study is focused on the compressive strength, water retention, and workability by varying the percentage of poly ethylene glycol 200 and liquid paraffin wax from 0% to 1% by weight of cement for self‐compacting concrete and compares it with conventional SCC. Percentages of 0.1%, 0.5%, and 1% (in proportion to the weight of cement) were adopted in the study. The comparison was done in a grade concrete and with cases such as indoor curing and water‐based curing. Slump‐flow test and V‐funnel tests were carried out on the fresh concrete to evaluate the workability of concrete. Concrete weight loss with time is evaluated to determine the water retention capacity. Compressive strength of cube specimens was conducted at the end of 7 and 28 days of curing. The durability of the concrete was assessed by immersing the concrete specimens in acids. The fresh properties were satisfied according to EFNARC specifications. Based on the weight loss percentage and satisfaction of compressive strength, the dosage of a self‐curing compound was determined. XRD analysis of the concrete was also performed on the concrete specimens.

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Effect of the heat curing on strength development of self-compacting mortars containing calcined silt of dams and Ground Brick Waste

Cited by 20 publications

References 11 publications

Valorization of brick wastes in the fabrication of concrete blocks

Valorization of brick wastes in the fabrication of concrete blocks

Effect of Natural Pozzolan and Calcined Paper Sludge as Pozzolanic Additions on the Physicals and Mechanicals Properties of Heat Treated Self-Compacting Mortars

An experimental study on strength and durability characteristics of self‐curing self‐compacting concrete

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