Photon attenuation properties of concrete produced with pumice aggregate and colemanite addition in different rates and the effect of curing age to these properties

Yaltay, Namık; Ekinci, Cevdet Emin; Çakır, Tahir; Oto, Berna

doi:10.1016/j.pnucene.2014.08.002

Cited by 21 publications

(11 citation statements)

References 34 publications

(37 reference statements)

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“…This relationship was previously observed for colemanite-loaded pumice concrete mixtures where the LAC values are strongly correlated with the density of the samples (Yaltay et al, 2015). Recall that B5 included a 25% Bi 2 O 3 additive while O0 included no additive.…”

Section: Gamma Radiation Shieldingsupporting

confidence: 75%

“…Many of these researches in the shielding concrete field have been limited to the use of different aggregates (Akkurt et al, 2010;Akkurt and Canakci, 2011;Gencel et al, 2011;Mostofinejad et al, 2012;Ouda, 2015;Singh et al, 2015;Topçu, 2003). However, recent research efforts have considered the use of different additives to enhance the shielding properties of concrete (González-Ortega et al, 2014;Mostofinejad et al, 2012;Oto et al, 2013;Ouda, 2015;Singh et al, 2015;Waly and Bourham, 2015;Yaltay et al, 2015). Rezaei-Ochbelagh and Azimkhani (2012) studied whether a lead powder additive could affect the shielding properties of concrete .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

Zhang

et al. 2016

Radiation Physics and Chemistry

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Section: Gamma Radiation Shieldingsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

Zhang

et al. 2016

Radiation Physics and Chemistry

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“…530.5 (7) 523.1 (7) 513.6 (7) 512.9 (7) 504.9 (6) 499.5 (7) 489.2 (5) 486.9 (6) 484.7 (6) 482.3 (8) 513.4 (5) Unique refls. (3) 24.85 (2) 24.85 (4) 24.81 (4) 24.74 (3) b ( A) 10.2064 (14) 10.1862 (13) 10.1410 (14) 10.1068 (14) 10.0822 (12) 10.0383 (14) 9.9893 (12) 9.9393 (13) c ( A) 11.726 (11) 11.663 (12) 11.692 (10) 11.664 (11) 11.579 (12) 11.578 (14) 11.595 (11) 11.547 (10) b (°) 112.45 (10) 112.64 (10) 112.44 (10) 112.81 (11) 113.18 (10) 113.24 (14) 113.33 (11) 113.50 (10) V (…”

Section: High-pressure Behavior Of Colemaniteunclassified

“…Colemanite can also be considered a material of technological and industrial relevance. Several studies have been focused on its use as an additive in concretes . or epoxy‐resins, to improve the shielding efficiency of these materials for neutron radiations, as already suggested for other B‐bearing materials .…”

Section: Introductionmentioning

confidence: 99%

High‐pressure behavior and P‐induced phase transition of CaB₃O₄(OH)₃·H₂O (colemanite)

et al. 2017

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Colemanite (ideally CaB3O4(OH)3·H2O, space group P21/a, unit‐cell parameters: a ~ 8.74, b ~ 11.26, c ~ 6.10 Å, β ~ 110.1°) is one of the principal mineralogical components of borate deposits and the most important mineral commodity of boron. Its high‐pressure behavior is here described, for the first time, by means of in situ single‐crystal synchrotron X‐ray diffraction with a diamond anvil cell up to 24 GPa (and 293 K). Colemanite is stable, in its ambient‐conditions polymorph, up to 13.95 GPa. Between 13.95 and 14.91 GPa, an iso‐symmetric first‐order single‐crystal to single‐crystal phase transition (reconstructive in character) toward a denser polymorph (colemanite‐II) occurs, with: aCOL‐II=3·aCOL, bCOL‐II=bCOL, and cCOL‐II=2·cCOL. Up to 13.95 GPa, the bulk compression of colemanite is accommodated by the Ca‐polyhedron compression and the tilting of the rigid three‐membered rings of boron polyhedra. The phase transition leads to an increase in the average coordination number of both the B and Ca sites. A detailed description of the crystal structure of the high‐P polymorph, compared to the ambient‐conditions colemanite, is given. The elastic behaviors of colemanite and of its high‐P polymorph are described by means of III‐ and II‐order Birch‐Murnaghan equations of state, respectively, yielding the following refined parameters: KV0=67(4) GPa and KV′=5.5(7) [βV0=0.0149(9) GPa−1] for colemanite; KV0=50(8) GPa [βV0=0.020(3) GPa−1] for its high‐P polymorph.

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“…It is emphasized that, with the lightweight concrete produced by pumice aggregate, besides the opportunity of making constructions in low carrying capacity floors, high, economical, low cost, high thermal insulated and durable buildings can be erected. It was also stated that the light concrete produced with pumice aggregate could be developed for protection against radiation by the addition of colemanite [18]. Pumice is most common lightweight aggregate material in Turkey because of its abundant reserves in our country.…”

Section: Pumice Aggregatementioning

confidence: 99%

Investigation of Mechanical Properties of High-Performance Lightweight Concrete With Pumice Aggregate

Tunç¹,

Alyamaç²,

İnce³

et al. 2018

NWSA

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Traditional concretes, which have a lot of usage in practice, have huge unit weights. Lightweight concretes have less weight than traditional concretes. By using lightweight concrete in the reinforced concrete structures, the total amount of concrete to be used in the buildings can be reduced, the buildings can be lightened, and the total weight of the building can be reduced. High-performance concrete is needed to build permanent and long-lasting structures. The aim of this study is to assess comprehensively the previous studies on highstrength lightweight concrete and to present a different perspective for this subject. In the present study, the mechanical properties of high-performance lightweight concretes with different mixing ratios were examined. Compressive strengths of traditional concretes and lightweight concretes were compared. In addition, the compressive strengths of the concrete specimens produced in the building materials laboratory were tried to be estimated by the statistical analysis. A good fitting was obtained between the experimental and the predicted results.

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Photon attenuation properties of concrete produced with pumice aggregate and colemanite addition in different rates and the effect of curing age to these properties

Cited by 21 publications

References 34 publications

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

High‐pressure behavior and P‐induced phase transition of CaB₃O₄(OH)₃·H₂O (colemanite)

Investigation of Mechanical Properties of High-Performance Lightweight Concrete With Pumice Aggregate

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Photon attenuation properties of concrete produced with pumice aggregate and colemanite addition in different rates and the effect of curing age to these properties

Cited by 21 publications

References 34 publications

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

Investigation of gamma ray shielding efficiency and mechanical performances of concrete shields containing bismuth oxide as an environmentally friendly additive

High‐pressure behavior and P‐induced phase transition of CaB3O4(OH)3·H2O (colemanite)

Investigation of Mechanical Properties of High-Performance Lightweight Concrete With Pumice Aggregate

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High‐pressure behavior and P‐induced phase transition of CaB₃O₄(OH)₃·H₂O (colemanite)