Combined effect of nano-silica, super absorbent polymers, and synthetic fibres on plastic shrinkage cracking in concrete

Olivier, Gerhard; Combrinck, Riaan; Kayondo, M.; Boshoff, William P.

doi:10.1016/j.conbuildmat.2018.10.102

Cited by 65 publications

(19 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…They confirmed using NMR that the saturated SAP were releasing water to the cement paste during the drying phase. Olivier et al [112] investigated the effect of nanosilica on plastic shrinkage cracking and as part of the investigation also looked at the effect of SAP on plastic shrinkage cracking. This was done alone but also in conjunction to other methods, e.g.…”

Section: Plastic Shrinkage and Crackingmentioning

confidence: 99%

Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report

et al. 2021

View full text Add to dashboard Cite

Superabsorbent polymers (SAP) are a new, promising class of chemical admixtures which offer new possibilities in respect of influencing the properties of cement-based materials in the fresh, hardening, and hardened states. Much research work has been done in the last two decades to set the stage for introducing this truly multipurpose agent into the practice of construction. In particular, three RILEM Technical Committees: 196-ICC, 225-SAP and 260-RSC contributed considerably to the related progress by coordinating and combining the efforts of international experts in the field. The major product of the RILEM TC 225-SAP work was the State-of-the-Art Report published in 2012. This comprehensive document covered all topics relevant to the application of SAP as a concrete admixture. Since then further important progress has been made in understanding the working mechanisms of SAP in concrete and the effects of SAP-addition on various concrete properties. The article at hand presents an update on the state-of-the-art and is the concluding document delivered by the RILEM TC 260-RSC.

show abstract

Section: Plastic Shrinkage and Crackingmentioning

confidence: 99%

Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Frost resistance of concrete containing NS particles increased by 28% when compared to traditional concrete. Olivier et al [15] studied the effects of incorporating nanoparticles such as NS on the shrinkage crack behavior of concrete. It was noticed that NS accelerated drying time enhanced by the reduced bleeding, this led to the initiation of the plastic shrinkage cracking, and hence plastic shrinkage occurred.…”

Section: Other Types Of Concretementioning

confidence: 99%

“…Nanoparticles also develop the strength of cement-based materials by improving the hydration process of cement and hence producing calcium-silica-hydrate (C-S-H) [9,10]. In civil engineering society researches have been undertaken and tests have been conducted on the use of nanoparticles such as nano-SiO2 [6,9,[11][12][13][14][15][16][17], nano-CaCO 3 [18][19][20], nano-TiO 2 [9,14,16,21,22], and nano-Al 2 O 3 [14,23].…”

Section: Introductionmentioning

confidence: 99%

Nanoparticles used as an ingredient in different types of concrete

Mahmood

Koçkal

2021

SN Appl. Sci.

View full text Add to dashboard Cite

Attempts to modify cement-based mixtures and to improve their properties have always attracted the attention of researchers. Favorable effects of nanoparticles, such as small particle size, high reactivity, and great surface area, have made them be used as one of the best replacements of cement. This paper aims to review the previous researches conducted regarding the effects of nanoparticles on the properties of concretes. Influence of various types of nanoparticles on the workability of fresh composite, mechanical properties such as compressive strength, flexural strength, splitting tensile strength, modulus of elasticity, and abrasion resistance, and durability-related properties such as water absorption, chloride ion penetration, resistance to frost, shrinkage, and carbonation of concrete is discussed.

show abstract

“…The application of superabsorbent polymers (SAPs) as humidity control materials in plaster mixtures was investigated only rarely in the past. Mostly, these materials were utilized as internal curing agents for the mitigation of autogenous shrinkage and crack reduction in a concrete mixture to date [ 32 , 33 , 34 , 35 ]. Research studies aimed at the comparison of moisture buffering potential of SAPs with porogene additives [ 32 ], phase change materials (PCMs) [ 36 ], or lightweight aggregates [ 37 , 38 ] presented very few exceptions in that respect.…”

Section: Introductionmentioning

confidence: 99%

Functional Properties of SAP-Based Humidity Control Plasters

et al. 2021

View full text Add to dashboard Cite

The application of materials with high moisture storage capacity close to the interior surface presents a prospective passive method for improving indoor relative humidity conditions. In this paper, lime-cement plasters containing three different types of superabsorbent polymers (SAPs) in varying dosages are introduced and their mechanical, hygric, and thermal characteristics are analyzed in a relation to microstructure. The experimental results show a significant effect of both SAP amount and chemical composition on all functional properties of studied plasters. The incorporation of 1.5% of SAP may induce up to 2.5 better moisture buffering, thus significantly improving the passive humidity control capability. Considering overall functional parameters of SAP-modified plasters, the dosage of 1 wt.% can thus be viewed as a rational compromise between the moisture storage capability and mechanical properties. The obtained wide sets of parameters can be utilized directly as input data of computational models suitable for the assessment of the interior microclimate of residential and administrative buildings.

show abstract

Combined effect of nano-silica, super absorbent polymers, and synthetic fibres on plastic shrinkage cracking in concrete

Cited by 65 publications

References 24 publications

Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report

Application of super absorbent polymers (SAP) in concrete construction—update of RILEM state-of-the-art report

Nanoparticles used as an ingredient in different types of concrete

Functional Properties of SAP-Based Humidity Control Plasters

Contact Info

Product

Resources

About