Effect of LECA on mechanical properties of self-curing concrete

Prasad, P.N.V.Durga; Neeraja, D.; Ravitheja, A.

doi:10.1016/j.matpr.2019.07.640

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…In an SCC mix, the main constituents are the fine aggregates that induce flowability and strength also. e trend obtained here was similar to the results inferred by Chaitanya et al [37]. Finally, the optimum percentages of 0.3% SAP and 15% LECA have been blended to study the mechanical properties.…”

Section: Compressive Strength Of Leca Sap and Combined Sccsupporting

confidence: 89%

“…From Figure 10, it is clear that beyond the addition of 0.3%, SAP has shown a gradual decrease in compressive strength, which was similar to the results reported by Afzali Naniz and Mazloom [33]. e reason was due to the SAP reduced shrinkage that had resulted in the strength loss, which was attributed analogous to the research reported by Chaitanya et al [37]. In SCC, the polymer blended with mineral admixture had shown a high strength and quality, which was similar to the results reported by Azari Jafari et al [34].…”

Section: Compressive Strength Of Leca Sap and Combined Sccsupporting

confidence: 83%

“…e authors indicated in their results that it is possible to develop both normal and high-strength self-curing SCC and both perform well as structural elements. Chaitanya et al [37] tried lightweight clay aggregate as self-curing agents for water detention and stated that the internal-curing agent LECA in concrete considerably gave better mechanical properties to concrete. Doha et al [38] indicated in their report that the internal curing of concrete developed a denser hydrated cement paste and the interfacial transition zone (ITZ) had undergone suitable changes by becoming closer and dense, thereby upgrading the strength of concrete.…”

Section: Advantages Of Initiating Self-curing Process In Sccmentioning

confidence: 99%

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Study on Fresh and Mechanical Properties of Polyblend Self‐Compacting Concrete with Metakaolin, Lightweight Expanded Clay Aggregate, and SAP as Alternative Resources

Vivek

Karthikeyan

Kanna

et al. 2022

Advances in Civil Engineering

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This paper discusses the possibility of developing a lightweight self-compacting concrete (SCC) with self-curing capabilities. In this regard, a supplementary cementitious material metakaolin, a presoaked lightweight expanded clay aggregate (LECA), and a chemical agent, superabsorbent polymer (SAP), were incorporated in developing a self-compacting self-curing concrete possessing a target strength of 60 MPa through experimental investigations, and the results are reported. The research includes an analysis of basic material properties of constituent materials including fresh properties of concrete and mechanical properties such as compressive and splitting tensile strength. It was inferred from the experimental results that utilization of self-curing agents in SCC has enhanced the mechanical properties when compared with conventional SCC mix. In particular, a combination of 0.3% SAP and 15% LECA gave the optimum strength values. The optimum usage limit of both the materials is presented in this study, and the results prove that SCC can be used as an alternate resource without disturbing the natural resources.

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Section: Compressive Strength Of Leca Sap and Combined Sccsupporting

confidence: 89%

Section: Compressive Strength Of Leca Sap and Combined Sccsupporting

confidence: 83%

Section: Advantages Of Initiating Self-curing Process In Sccmentioning

confidence: 99%

See 1 more Smart Citation

Study on Fresh and Mechanical Properties of Polyblend Self‐Compacting Concrete with Metakaolin, Lightweight Expanded Clay Aggregate, and SAP as Alternative Resources

Vivek

Karthikeyan

Kanna

et al. 2022

Advances in Civil Engineering

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“…In this regard, LWC can be conveniently produced using natural lightweight aggregates, for example, LECA. 23,24 Structural lightweight concrete has obvious advantages, including higher strength/weight ratio, better tensile strain capacity, and lower coefficient of thermal expansion due to the air voids inside the lightweight aggregates. 25,26 The higher porosity of lightweight aggregates may significantly decrease the concrete strength and durability.…”

mentioning

confidence: 99%

Investigation on optimal lightweight expanded clay aggregate concrete at high temperature based on deep neural network

Dabbaghi

Tanhadoust

Nehdi

et al. 2022

Structural Concrete

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This study explores the effects of mixture design parameters on the residual mechanical properties of lightweight expanded clay aggregate (LECA) concrete exposed to elevated temperatures. A total of 30 lightweight concrete mixtures were cast and exposed to three elevated temperatures, namely 250°C, 500°C, and 700°C. The test variables comprised the LECA percentage used as partial volume substitution for natural sand (0%, 25%, 50%, 75%, and 100%), silica fume partial replacement for cement by weight (5%, 7.5%, 10%, 12.5%, and 15%), cement content (300, 400, 500, 600, and 700 kg/m3), and different water‐to‐cement (W/C) ratios (0.25, 0.313, 0.375, 0.438, and 0.5). The compressive and indirect tensile strengths were measured before and after exposure to elevated temperatures. The results indicate that the lightweight concretes incorporating higher contents of cement and silica fume and made with lower W/C ratio exhibited higher initial mechanical properties yet incurred more significant drop in mechanical properties after exposure to 500°C and 750°C.

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Influence of Lightweight Aggregates and Supplementary Cementitious Materials on the Properties of Lightweight Aggregate Concretes

Kumar

Srivastava

2022

Iran J Sci Technol Trans Civ Eng

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Effect of LECA on mechanical properties of self-curing concrete

Cited by 8 publications

References 4 publications

Study on Fresh and Mechanical Properties of Polyblend Self‐Compacting Concrete with Metakaolin, Lightweight Expanded Clay Aggregate, and SAP as Alternative Resources

Study on Fresh and Mechanical Properties of Polyblend Self‐Compacting Concrete with Metakaolin, Lightweight Expanded Clay Aggregate, and SAP as Alternative Resources

Investigation on optimal lightweight expanded clay aggregate concrete at high temperature based on deep neural network

Influence of Lightweight Aggregates and Supplementary Cementitious Materials on the Properties of Lightweight Aggregate Concretes

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