Strength and durability of lightweight concrete

Haque, M N; Al‐Khaiat, Husain; Kayali, Obada

doi:10.1016/s0958-9465(02)00141-5

Cited by 174 publications

(64 citation statements)

References 6 publications

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“…However, at the age of 28 days, the splitting tensile strength of the POCP concrete in this study ranged from 6.5% to 8% of the compressive strength. This is similar to the tensile/compressive strength ratio ranging from 6.6% to 9% of the lightweight concrete made with an artificial lightweight aggregate, as reported by Haque (2014) [24]. A parabolic relationship with a correlation coefficient of 0.86 was observed between the 28-day compressive strength and splitting tensile of the POCP concrete, as shown in Figure 19.…”

Section: -(5)supporting

confidence: 87%

“…In general, the splitting tensile strength for normal weight concrete ranges from 8% to 14% of its compressive strength [23]. The splitting/compressive strength ratio for normal weight concrete is higher when compared to the lightweight concrete [24]. Holm (2000) [25] reported that lightweight concrete that is moist cured has a splitting tensile strength of generally between 6% and 7% of its compressive strength.…”

Section: -(5)mentioning

confidence: 99%

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Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

2017

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Palm oil clinker (POC) is a waste material generated in large quantities from the palm oil industry. POC, when crushed, possesses the potential to serve as an aggregate for concrete production. Experimental investigation on the engineering properties of concrete incorporating POC as aggregate and filler material was carried out in this study. POC was partially and fully used to replace natural coarse aggregate. The volumetric replacements used were 0, 20%, 40%, 60%, 80%, and 100%. POC, being highly porous, negatively affected the fresh and hardened concrete properties. Therefore, the particle-packing (PP) method was adopted to measure the surface and inner voids of POC coarse aggregate in the mixtures at different substitution levels. In order to enhance the engineering properties of the POC concrete, palm oil clinker powder (POCP) was used as a filler material to fill up and coat the surface voids of POC coarse, while the rest of the mix constituents were left as the same. Fresh and hardened properties of the POC concrete with and without coating were determined, and the results were compared with the control concrete. The results revealed that coating the surface voids of POC coarse with POCP significantly improved the engineering properties as well as the durability performance of the POC concrete. Furthermore, using POC as an aggregate and filler material may reduce the continuous exploitation of aggregates from primary sources. Also, this approach offers an environmental friendly solution to the ongoing waste problems associated with palm oil waste material.

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Section: -(5)supporting

confidence: 87%

Section: -(5)mentioning

confidence: 99%

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

2017

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“…While several studies comparing the carbonation resistance of lightweight concrete and normal weight concrete can be found in the literature, that of Haque et al [13] is perhaps most relevant to the current study. These authors found that after 7 days of initial curing, the carbonation depth measured for lightweight concrete was only slightly greater than that measured for normal weight concrete, at similar strength levels.…”

Section: Resultsmentioning

confidence: 99%

Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers

et al. 2014

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In many parts of the world, corrosion of reinforcing steel in concrete induced by carbonation of the concrete continues to be a major durability concern. This paper investigates the accelerated and natural carbonation resistance of a set of seven concretes, specifically evaluating the effects of internal curing and/or shrinkage/viscosity modifiers on carbonation resistance. In addition to five different ordinary portland cement (OPC) concretes, two concretes containing 20 % of a Class F fly ash as replacement for cement on a mass basis are also evaluated. For all seven concrete mixtures, a good correlation between accelerated (lab) and natural (field) measured carbonation coefficients is observed. Conversely, there is less correlation observed between the specimens' carbonation resistance and their respective 28 days compressive strengths, with the mixtures containing the shrinkage/viscosity modifier specifically exhibiting an anomalous behavior of higher carbonation resistance at lower strength levels. For both the accelerated and natural exposures, the lowest carbonation coefficients are obtained for two mixtures, one containing the shrinkage/viscosity modifier added in the mixing water and the other containing a solution of the same admixture used to pre-wet fine lightweight aggregate. Additionally, the fly ash mixtures exhibited a significantly higher carbonation coefficient in both exposures than their corresponding OPC concretes.

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“…The ratio in this study is lower than the normal weight concrete by 29 -49%. It also has been reported by Haque et al (2004) that the splitting tensile strength to compressive strength ratio of LWAC is lower than that for normal weight concrete in the equivalent grade. In addition, the splitting tensile/compressive strength ratio of high strength lightweight concrete under continuously moist cured, also reached 6 -7% (Omar & Mohamed 2002).…”

Section: Compressive Strengthsmentioning

confidence: 70%

Effect of Substitution of Normal Weight Coarse Aggregate with Oil-Palm-Boiler Clinker on Properties of Concrete

Lee¹,

Shafigh²,

Mahmud³

et al. 2017

JSM

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Strength and durability of lightweight concrete

Cited by 174 publications

References 6 publications

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

Effect of Coating Palm Oil Clinker Aggregate on the Engineering Properties of Normal Grade Concrete

Accelerated and natural carbonation of concretes with internal curing and shrinkage/viscosity modifiers

Effect of Substitution of Normal Weight Coarse Aggregate with Oil-Palm-Boiler Clinker on Properties of Concrete

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