Influence of SAP content and curing age on air void distribution of high performance concrete using 3D volume analysis

Olawuyi, Babatunde J.; Boshoff, William P.

doi:10.1016/j.conbuildmat.2016.12.128

Cited by 71 publications

(34 citation statements)

References 16 publications

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“…According to the development of SAP sorption in pore solution in time, the maximum sorption is reached within 10 min, which is about 14 g/g SAP. This is a theoretical SAP sorption capacity in the static solution, with possible discrepancies compared to the required internal curing water [33], which included the dispersion of SAP particles, formation of agglomerate and crushing of swollen SAP particles [27,34,35]. Mechtcherine et al also revealed that the sorption process in tea bags was faster than that in fresh matrix [36].…”

Section: Determination Of Sap Absorptionmentioning

confidence: 99%

See 1 more Smart Citation

Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer

Zhu

Fang

et al. 2019

Cement and Concrete Research

105

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Section: Determination Of Sap Absorptionmentioning

confidence: 99%

“…Considering the SAP absorption in a mixing condition, workability test was adopted by many researchers [27,33]. To maintain the same flow of SAP mixtures in contrast to the control mixture without SAP addition, Mönnig [27] introduced an approach to compare flowability of mixtures with varying internal curing water.…”

Section: Determination Of Sap Absorptionmentioning

confidence: 99%

Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer

Zhu

Fang

et al. 2019

Cement and Concrete Research

105

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“…The materials used for the study are SAP, natural sand, crushed greywacke stone, cement (CEM I 52.5 N), silica fume (SF), Fly Ash (FA), Corex Slag (CS), water and superplasticiser. Two grain sizes of SAP (SP1 and SP2 as described in earlier publication [10] at varied SAP contents (0%, 0.2%, 0.3% and 0.4%) by weight of binder (bwob) were used for the study. The SAP is a thermoset polymer, specifically covalently cross-linked polymer of acrylic acid and acrylamide, obtained from bulk solution polymerisation and neutralised by alkali hydroxide, which according to Schrofl et al, [11] have been proven efficient as internal curing agent in concrete.…”

Section: Methodsmentioning

confidence: 99%

“…Binder Types 2 and 3 are referred to as ternary cements. The details of the mix constituents for the reference HPC mixtures made with the respective binder types is presented [10].…”

Section: Methodsmentioning

confidence: 99%

Influence of superabsorbent polymer on the splitting tensile strength and fracture energy of high-performance concrete

Olawuyi

Boshoff

2018

MATEC Web Conf.

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Superabsorbent polymers (SAP) addition as an internal curing (IC) agent in concrete is an approach being adopted for the mitigation of autogenous shrinkage. Micro-voids created by SAP are arguably believed to be detrimental to the mechanical properties especially the fracture tendencies of the concrete. This paper presents the report of an experimental study of SAP’s influence on the splitting tensile strength and fracture energy of low water/binder (W/B) high-performance concrete (HPC). Reference HPC mixtures (M1F, M1S, M2 and M3) designed for a 28-day minimum cube compressive strength of 70 N/mm2 (MPa) were examined for the effect of SAP grain size, content and binder type on the above stated properties. Wedge splitting test was carried out on 100 mm cube specimen of HPC containing varied SAP contents (0.2, 0.3 and 0.4 by weight of binder (bwob)) and SAP sizes, cured by water immersion for 28, 56 and 90 days respectively. The results obtained was plotted as splitting force (Fsp in kN) against the crack mouth opening displacement (CMOD in mm) for computing the work of fracture (Wf), which is the area under the Fsp CMOD curve. The study concludes that the splitting tensile strength and fracture energy of the HPCs are not directly affected by SAP addition (i.e. neither grain size nor content).

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“…Advanced cementitious building materials can be defined as the cementitious building materials that can meet special combinations of properties and uniformity requirements, which cannot always be achieved routinely using traditional raw materials and conventional mixing, placing, and curing methods. The factors which justify the popularity of advanced cementitious building materials are high strength, high workability, and high durability for various structural purposes [1]. Compressive strength of the cementitious material which is usually applied to evaluate the quality of cementitious material and its applicability for purpose is a major component in rational structure design.…”

mentioning

confidence: 99%

Advanced Cementitious Building Materials with Applications in Civil Engineering

Zhang

Han

et al. 2017

Advances in Civil Engineering

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Cementitious building material is most extensively used as a kind of architectural materials in latter day and is the largest artificial material at present. With the high development of construction industry, many building structures with long span, high strength, and great height are being constructed or used under harsh conditions, which has higher requirements on cementitious building materials. Advanced cementitious building materials can be defined as the cementitious building materials that can meet special combinations of properties and uniformity requirements, which cannot always be achieved routinely using traditional raw materials and conventional mixing, placing, and curing methods. The factors which justify the popularity of advanced cementitious building materials are high strength, high workability, and high durability for various structural purposes [1]. Compressive strength of the cementitious material which is usually applied to evaluate the quality of cementitious material and its applicability for purpose is a major component in rational structure design. Today, the durability is also a major aspect to be considered in civil engineering structure design as the importance of durability of cementitious materials is being more and more accepted and emphasized [2]. A large number of investigators are devoting themselves to developments of advanced cementitious building materials and also studying on the mechanism research for peculiar performance, manufacturing technique, experiment methods, modeling, and applications of various advanced cementitious building materials. Generally, there are a lot of approaches to obtain advanced cementitious materials. In general, specific binding materials, aggregates, and additives can be incorporated into the conventional cementitious materials to obtain advanced cementitious materials. For example, some extraordinary aggregates [3], chemical additives [4], various fibers [5,6], and mineral admixtures [7,8] can be added to fabricate advanced cementitious building materials.Cementitious building materials have significant new progresses in recent years. The advanced cementitious building materials will provide better materials for specific projects in civil engineering. This special issue aims to bring investigators from industry and academia together to report and explore the new investigations techniques, new preparation methods and basic material properties, testing methods, and standardization in civil engineering, fresh properties and constructability, shrinkage and creep, structural performance and modeling, functional coatings for buildings, durability and sustainability, and field applications in advanced cementitious building materials and review the latest progress in this field. The advanced cementitious building materials include common cementitious composites building materials, cementitious pavement materials, high-performance concrete and ultrahigh-performance concrete, high-ductility and fibre-reinforced materials, and self-sensing/self-healing ...

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Influence of SAP content and curing age on air void distribution of high performance concrete using 3D volume analysis

Cited by 71 publications

References 16 publications

Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer

Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer

Influence of superabsorbent polymer on the splitting tensile strength and fracture energy of high-performance concrete

Advanced Cementitious Building Materials with Applications in Civil Engineering

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