The influence of expanded perlite aggregate on compressive strength, linear autogenous shrinkage, restrained shrinkage, heat of hydration of cement‐based materials

Polat, Rıza; Demirboğa, Ramazan; Karagöl, Fatma

doi:10.1002/suco.201700259

Cited by 7 publications

(5 citation statements)

References 31 publications

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“…Perlite has many applications in various industries but the most common use of perlite in the construction industry is at light material production. In a recent research conducted by Polat et al, the effect of perlite on compressive strength and autogenous shrinkage has been investigated . Considering the significant effect of powdered perlite size and their great effect on the geopolymers compressive strength and probability of such parameter's influence on geopolymer durability, the stability of the geopolymer produced with three different granulation and different fineness versus sulfate attacks has been investigated in this work similar to author's previous work .…”

Section: Methodsmentioning

confidence: 75%

Investigation of sulfates effects in perlite‐based geopolymer

Mohabbi

2019

Structural Concrete

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Condition deterioration of the concrete, especially in corrosive environments, is one of the most common imperfection and disadvantages of reinforced concrete structures. Sulfates' main damages are expansion and loss of strength. Geopolymers are one of the newest structural materials that have been widely developed in recent years for use in sustainable designs. Geopolymers are environmentally friendly and considered as green materials since they are effective in sustainable and eco‐friendly material design concept. One of the most important matters in the sustainability of structural materials is their resistance against sulfates. So far, the durability of perlite‐based geopolymers against sulfates and acids has not been investigated. In this research, the fineness influence, curing conditions, duration of maintaining in the sulfate environment at different weight percentage in solution (i.e., 2.5, 5, 7.5, and 10%) have been investigated. Compressive strength and microstructure changes of geopolymer samples have been assessed in this research. As a result, optimum increase in perlite fineness causes increase in compressive strength and durability of samples against sulfate attack. Also, samples that have been cured by autoclave method have better mechanical properties and better durability. It is hoped that by filling these deficiencies and gaps, a positive step can be taken to accelerate attempts for finding a suitable replacement for ordinary Portland cement.

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Section: Methodsmentioning

confidence: 75%

Investigation of sulfates effects in perlite‐based geopolymer

Mohabbi

2019

Structural Concrete

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“…The results showed that the addition of ground waste EPA leads to gains in strength up to 50%. Polat et al [70] developed lightweight mortar and concrete using EPA. It was concluded through experimentation that as compared to controlled samples, strength, ultrasonic pulse velocity (UPV) and shrinkage were reduced with increasing EPA content, while the degree of hydration was increased with increment in EPA content.…”

Section: Perlite Concretementioning

confidence: 99%

Industrial Wastes-Cum-Strength Enhancing Additives Incorporated Lightweight Aggregate Concrete (LWAC) for Energy Efficient Building: A Comprehensive Review

2021

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Lightweight aggregate concrete (LWAC) exhibits the advantages of thermal insulation, reduces energy consumption building costs, improves building efficiency and easy construction. Furthermore, the utilization of industrial wastes in concrete is advantageous in terms of environmental sustainability. In order to explore this, several researchers investigated the idea of integrating industrial wastes in LWAC. However, the lack of knowledge regarding the performance of industrial waste-based lightweight aggregate concrete hinders the adaptation of this concept and application of LWAC in the construction sector. Therefore, this paper summarizes the research in relation to the sustainable LWACs containing oil palm shell (OPS), lightweight expanded clay aggregate (LECA), vermiculite, perlite, pumice and sintered fly ash as lightweight aggregate, along with industrial wastes and strength-enhancing additives (viz. fibers, polymers, etc.). Firstly, desirable physical, chemical, morphological and mineralogical characterization of different lightweight aggregates are presented, and then a comprehensive overview on fresh, hardened, durability and thermal properties of LWAC incorporating industrial wastes are discussed in comparison with normal weight concrete. The review also highlights the current challenges and suggests the research gaps for further development of eco-friendly LWAC. It is concluded that vermiculite, perlite, pumice, OPS, sintered fly ash and LECA with some suitable industrial waste materials have the potential to be used in the construction sector. Moreover, LWAC with industrial waste has 50–65% lower carbon emission (kg CO2 eq/m3) in the environment. The scientific contribution of this paper provides insights into different LWACs and the knowledge base for future research and paradigm shift of using LWACs as more common alternative building materials.

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“…Strain gauge and thermocouple were used to measure the autogenous shrinkage and the temperature of the sample (internal) between the initial setting time and 28 days. Details of this method are described in the literature …”

Section: Experimental Studymentioning

confidence: 99%

Mechanical and physical behavior of cement paste and mortar incorporating nano‐CaO

Polat

Demirboğa

Karagöl

2018

Structural Concrete

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The aim of this work is to experimentally investigate the effect of properties of nano-CaO in cement-based materials. Mortars and paste samples were produced by using nano-CaO in 2.5, 5, and 7.5% ratios instead of cement. The initial and final setting times and volumetric autogenous shrinkage tests of paste samples and 7, 28, and 360 days' compressive strength, the ultrasonic pulse velocity, heat of hydration, and linear autogenous shrinkage of mortar samples were determined. In addition, the micro-structures of paste samples were characterized by X-raydiffraction and SEM. As a result, the shrinkage and setting times were reduced with the increase of nano-CaO content. CaO with nano size increased the compressive strength (about 10-22%) and the heat of hydration. The compressive strength of mixture containing 7.5% nano-CaO was lower than that of 2.5 and 5% nano-CaO at 360 days of curing duration. The heat of hydration increased for all the mixtures containing nano-CaO at an early stage and very rapidly between 4 and 16 hr. K E Y W O R D S autogenous shrinkage, compressive strength, hydration heat, nano-CaO, SEM, X-ray-diffraction

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The influence of expanded perlite aggregate on compressive strength, linear autogenous shrinkage, restrained shrinkage, heat of hydration of cement‐based materials

Cited by 7 publications

References 31 publications

Investigation of sulfates effects in perlite‐based geopolymer

Investigation of sulfates effects in perlite‐based geopolymer

Industrial Wastes-Cum-Strength Enhancing Additives Incorporated Lightweight Aggregate Concrete (LWAC) for Energy Efficient Building: A Comprehensive Review

Mechanical and physical behavior of cement paste and mortar incorporating nano‐CaO

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