Properties of concrete made of multicomponent mixes of low-energy demanding binders

Mavroulidou, Maria; Morrison, Tanya; Unsworth, C.; Gunn, Michael

doi:10.1016/j.conbuildmat.2015.10.091

Cited by 16 publications

(26 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In line with Kadu and Gajghate (2016) and Yousuf et al (2014), mixes with PSA only (10% or 15% PSA) had fast early strength development and higher strengths than the control CEM-II mix which could be attributed to the presence of metakaolin and portlandite (Doudart de la Grée, 2012; Doudart de la Grée et al, 2018). Conversely mixes with PFA only had lower 7- and 28-day strengths than the control CEM-II mix, commonly observed (Mavroulidou et al, 2011, 2015; Neville, 1995; Roy et al, 2001). PSA positively affected strengths of PFA mixes in line with Mavroulidou et al (2013) and Florea (2016).…”

Section: Resultsmentioning

confidence: 69%

See 1 more Smart Citation

A study on the potential use of paper sludge ash in concrete with glass aggregate

Mavroulidou

Awoliyi

2018

Waste Manag Res

View full text Add to dashboard Cite

This short communication focuses on the potential use of paper sludge ash (PSA), a waste product of the paper making industry as an innovative binder partially replacing cement in concrete with glass aggregate.After preliminary testing using binary or ternary CEM-II mixes with PSA/ Pulverised Fly Ash (PFA) a suitable mix for concrete with glass aggregate was identified. Concrete mixes with partial or full natural sand replacement by waste glass aggregate (WGA) were then produced and showed appropriate strengths and overall similar or better water absorption characteristics than control mixes with natural aggregates without manifest alkali-silica reaction (ASR) problems.This shows potential for applications in precast dry mix concrete units based on the required strengths that were achieved.

show abstract

Section: Resultsmentioning

confidence: 69%

“…Ternary mixes of CEM-II, PSA and PFA were used as PSA was found to lower the workability (Mavroulidou et al 2013), whereas PFA is known to increase workability (see e.g. Mavroulidou et al, 2015). PSA content was kept modest as Mavroulidou et al (2013) found a reduction in strength for higher PSA contents (see also 3.1).…”

Section: Methodsmentioning

confidence: 99%

A study on the potential use of paper sludge ash in concrete with glass aggregate

Mavroulidou

Awoliyi

2018

Waste Manag Res

View full text Add to dashboard Cite

show abstract

“…In general, incorporating MgO leads to strength decrease of cement pastes, mortars and concrete. In fact, this behaviour was observed in compressive strength [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ], flexural strength [ 42 , 43 , 46 , 47 ], and tensile strength [ 48 ]. The incorporation of higher amounts of MgO caused further strength decrements [ 39 , 43 , 46 , 47 , 49 ].…”

Section: Characterization Of Cementitious Materials With Additionamentioning

confidence: 99%

“…The durability behaviour of cementitious materials with MgO, studied by different researchers, is summarized in Table 4 . In general, the incorporation of MgO leads to lower water absorption [ 45 , 47 , 52 ], higher carbonation [ 41 , 48 ], higher chloride ion migration coefficient [ 41 ], higher initial expansion [ 37 , 39 , 42 , 43 , 46 , 47 , 57 , 58 ], and lower shrinkage [ 42 , 43 , 53 ].…”

Section: Characterization Of Cementitious Materials With Additionamentioning

confidence: 99%

Magnesia (MgO) Production and Characterization, and Its Influence on the Performance of Cementitious Materials: A Review

Nobre

Ahmed

Bravo³

et al. 2020

Materials

View full text Add to dashboard Cite

This paper presents a literature review concerning the characteristics of MgO (magnesium oxide or magnesia) and its application in cementitious materials. It starts with the characterization of MgO in terms of production processes, calcination temperatures, reactivity, and physical properties. Relationships between different MgO characteristics are established. Then, the influence of MgO incorporation on the properties of cementitious materials is investigated. The mechanical strength and durability behaviour of cement pastes, mortars and concrete mixes made with MgO are discussed. The studied properties of MgO–cement mixes include compressive strength, flexural strength, tensile strength, modulus of elasticity, water absorption, porosity, carbonation, chloride ion penetration, shrinkage, expansion, and hydration degree. In addition, microscopic analyses of MgO-cement mixes are also assessed. Summarizing the results of different studies, it is concluded that MgO incorporation in cementitious materials generally decreases the mechanical strength and shrinkage, and increases the porosity, expansion, carbonation and chloride ion migration. However, it should be emphasized that the properties of the specific MgO used (mainly the calcination temperature, the reactivity and the surface area) have a significant influence on the characteristics of the cementitious materials produced.

show abstract

“…Research carried out by several authors on the incorporation of different reactive MgO contents (with low calcination temperatures) in cement materials has shown that there is a reduction in mechanical properties, such as compressive strength [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ], flexural strength [ 17 , 18 , 21 , 23 , 24 ], and tensile strength [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Performance of Mortars with Commercially-Available Reactive Magnesium Oxide as Alternative Binder

et al. 2021

View full text Add to dashboard Cite

This paper intends to analyze the performance of mortars with reactive MgO, as a sustainable alternative to cement. Six different MgOs from Australia, Canada, and Spain were used in the production of mortars as partial substitutes for cement, namely 5%, 10%, 15%, 20%, and 25% (by weight). MgOs with different levels of reactivity were used to analyze its influence on the performance of MgO mortars. In order to evaluate the mechanical performance of these mortars, compressive strength, flexural strength, dynamic modulus of elasticity, and ultrasonic pulse velocity tests were performed. Compressive strength tests showed that the use of 25% reactive MgO can cause a decrease of this property of between 28% and 49%. The use of reactive MgO affected the other mechanical properties less. This paper also intends to analyze the durability performance of mortars with reactive MgO. To that effect, water absorption by capillarity was assessed. In this research, the effect of using MgO on the shrinkage was also analyzed. It was found that shrinkage may decrease by more than a half in some cases.

show abstract

Properties of concrete made of multicomponent mixes of low-energy demanding binders

Cited by 16 publications

References 17 publications

A study on the potential use of paper sludge ash in concrete with glass aggregate

A study on the potential use of paper sludge ash in concrete with glass aggregate

Magnesia (MgO) Production and Characterization, and Its Influence on the Performance of Cementitious Materials: A Review

Performance of Mortars with Commercially-Available Reactive Magnesium Oxide as Alternative Binder

Contact Info

Product

Resources

About