The influence of lightweight aggregate on the physico-mechanical properties of concrete exposed to freeze–thaw cycles

Polat, Rıza; Demirboğa, Ramazan; Karakoç, Mehmet Burhan; Türkmen, İbrahim

doi:10.1016/j.coldregions.2009.08.010

Cited by 101 publications

(32 citation statements)

References 10 publications

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“…EPA and PA have porous and weak structure and lower compressive strength than normal aggregate. For this reason, as it can be seen from Figure , the compressive strength of samples decreases while EPA and PA content increases. Compressive strength of the samples with PA and EPA decreases for 0.25, 0.30, and 0.35 w/b ratios at 200 freeze–thaw cycles.…”

Section: Resultsmentioning

confidence: 93%

“…Faust, Demirboga and Gul, Turkmen and Kantarci, and Turkmen et al pointed out that compressive strength decreases with decreasing density. The samples containing 10% of PA and EPA have shown best performance to the damage of freeze–thaw cycles.it can be said that 10% of PA and EPA is optimum value . Litvan and Sereda and Kuboyama et al have shown that adding porous aggregates to concrete can improve the resistance of concrete to frost action.…”

Section: Resultsmentioning

confidence: 99%

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The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

Karagöl

Yegin

Polat

et al. 2018

Structural Concrete

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This article presents the results of a study dealing with the concrete resistance to repeated cycles of freezing and thawing of nonair entrained, fine lightweight aggregate (LWA) and air‐entrained concrete when tested in accordance with ASTM C 666, procedures A and B. The water‐to‐binder ratios (w/b) of the mixtures ranged from 0.25 to 0.35, and the percentage of cement replacement by silica fume were 7% on a weight basis and constant throughout study. Binder dosage was 500 kg/m3 and constant. LWA was pumice aggregate (PA) and expanded perlite aggregate (EPA). PA and EPA were replaced by 10, 20, and 30% of total volume of 1 m3 as a fine aggregate (0–2 mm fine aggregate fraction). Also one group was produced with air entraining agent by 0.1% ratio of binder dosage. The 200 freeze–thaw cycles were carried out according to ASTM C666/C666M‐15, procedure A and B. The compressive strength, ultrasonic pulse velocity, relative dynamic modulus of elasticity and dry unit weight of mixtures were investigated. Based upon the analysis of the test data, it is concluded that samples contain air‐entrained agent and 10% LWA were more durable than that of control sample. With the increasing of the LWA content the freeze–thaw resistance of samples decreased. Thus, higher content of LWA is not recommended when it is to be subjected to repeated freeze–thaw cycles. Freezing–thawing procedures were compared with each other and found that procedure A was more severe than procedure B.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

Karagöl

Yegin

Polat

et al. 2018

Structural Concrete

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“…The highest total open porosity results were obtained for PT, namely about 75%, while PP and PS had total open porosity in the range of 45-47%. Information about the total open porosity are often used as one of the most important factors influencing moisture buffering efficiency of porous building materials whereas materials with higher porosity are widely considered as more prospective materials from this point of view (Polat et al 2010). Table 3 shows the parameters obtained by MIP, where besides the information on the total open porosity, also the cumulative pore volume and average pore size of the plasters are given.…”

Section: Resultsmentioning

confidence: 99%

Moisture Buffering Potential of Plasters for Energy Efficiency in Modern Buildings

Fořt

Doleželová

Černý

2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. Moisture level significantly affects durability of constructions, their thermal performance and quality of indoor air. Since building envelopes are subjected to a moisture gradient, additional ventilation systems are employed to maintain relative humidity on the desired level. Although modern advanced ventilation systems provide sufficient air exchange rate, their wider application is in conflict with sustainability development principles due to high energy demands. Moreover, according to the European legislation related to the Nearly Zero Energy Buildings (European Directives 2002/91/EC and 2010/31/EU), air tightness of building envelopes in order to provide high thermal resistance leads to large moisture loads in building interiors. Among other factors, a high level of relative humidity has negative effect on the work efficiency and health of building inhabitants. A detailed insight into building materials behavior during cyclic moisture loading was accessed within this study. The moisture buffering values of three interior plasters were investigated in order to describe influence of plasters on moderation of indoor environment. Particular materials were loaded according to the NORDTEST protocol by 8/16 h loading schema at 70/30% RH. Here, the excellent moisture buffer classification was obtained for lightweight perlite plaster (PT) with the highest total open porosity. However, contrary to the higher total open porosity of renovation plaster (PS), the core plaster (CP) achieved higher moisture buffer capacity than PS. This discrepancy refers to the influence of the pore size distribution which is, besides the total open porosity, essential for a detailed characterization of moisture buffering potential of building materials. Based on the results of Mercury intrusion porosimetry, a correlation between pore size distribution and moisture buffer value was revealed.

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“…It can be produced with a dry density range of about 300-2000 kg/m 3 , with a compressive strength in the range of 1 to over 60 MPa. The best method of producing lightweight concrete is by using of lightweight aggregate (LWA) [3].…”

Section: Introductionmentioning

confidence: 99%

“…Lightweight concrete (LWC) has been extensively used in buildings as wall panels, roof decks, masonry blocks and precast concrete elements [2]. It can be produced with a dry density range of about 300-2000 kg/m 3 , with a compressive strength in the range of 1 to over 60 MPa. The best method of producing lightweight concrete is by using of lightweight aggregate (LWA) [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of replacement of oil-palm-boiler clinker with oil palm shell on the properties of concrete

Aslam

Shafigh

Jumaat

2016

AIP Conference Proceedings

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Abstract. The use of structural lightweight aggregate concrete in structures has several benefits over normal weight concrete, particularly in multi-story buildings. The best way to produce structural lightweight concrete is by using lightweight aggregates. The use of artificial aggregates was minimized because of the high production costs due to huge consumption of energy and raw materials. Therefore, the best alternative to mitigate the negative impact in the construction industry is the use of by-product and waste materials. Oil-palm-boiler clinker (OPBC) and oil palm shell (OPS) are two waste materials from oil palm industry and available in large quantities. Both of these materials are considered as lightweight aggregate. However, OPBC is heavier than OPS. Therefore, concrete containing OPBC as coarse aggregate is considered as semi-lightweight concrete. This paper investigates the effect of the replacement of OPBC by OPS on the compressive strength, density and efficiency factor of concrete. Two mix proportions were prepared; the first concrete mix contain just OPBC as coarse aggregate. However, in second mixture, the OPBC was replaced by 20% OPS by the volume. The test results revealed that low volume substitution of OPBC with OPS can transform the semi-lightweight concrete to lightweight concrete with 28-day compressive strength of about 52 MPa.

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The influence of lightweight aggregate on the physico-mechanical properties of concrete exposed to freeze–thaw cycles

Cited by 101 publications

References 10 publications

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

The influence of lightweight aggregate, freezing–thawing procedure and air entraining agent on freezing–thawing damage

Moisture Buffering Potential of Plasters for Energy Efficiency in Modern Buildings

Effect of replacement of oil-palm-boiler clinker with oil palm shell on the properties of concrete

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