Lightweight Cellular Hollow Concrete Blocks Containing Volcanic Tuff Powder, Expanded Clay and Diatomite for Non-Load Bearing Walls

Gündüz, Lütfullah; KALKAN, Şevket Onur

doi:10.18400/tekderg.426034

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…Loadbearing walls and partitions are generally built with these types of blocks. The mass of these types of concrete blocks generally ranges from 16 kg to 27 kg [1]. While the amount of sand in the concrete mixture prepared for concrete blocks is higher than the typical concrete mixture, the amount of gravel and water is less.…”

Section: Introductionmentioning

confidence: 99%

“…Lightweight concrete blocks can be manufactured with densities ranging from 400 kg/m 3 to 1100 kg/m 3 , affecting an average reduction in dead load of 40 % to 50 % compared to buildings with conventional concrete walls [2]- [4]. The mass of a typical lightweight concrete block is usually between 5 and 14 kg, depending on the aggregate type, shape, and grading [1].…”

Section: Introductionmentioning

confidence: 99%

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The influence of anhydrite III as cement replacement material in production of lightweight masonry blocks for unreinforced non-load bearing walls

KALKAN

Gündüz

2022

Journal of Sustainable Construction Materials and Technologies

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Lightweight cellular hollow concrete (LCHC) block is a type of masonry unit that has excellent thermal and acoustic performance, fire resistance and high weathering resistance, and manufactured by precast technique. This work presents an experimental study, which investigates the effects of volumetric partial replacement of Portland cement by calcium sulfate anhydrite on precast properties, especially hardening time of the products, thermal insulation properties and mechanical properties of the blocks. LCHC block is produced by the mixing of Portland cement (PC), anhydrite III (ANH), expanded perlite (EP), pumice (PU) and calcite (CA) for building applications. The physical and mechanical properties of LCHC blocks having various replacement levels of ANH are studied. Experimental studies were carried out on both 10x10x10 cm3 cube specimens and 19x19x39 cm3 block specimens. In this research work, LCHC blocks with 16 different mixture batches were cast into a mould with vibro-compacting, de-moulded immediately and transferred to a storage area for curing up to 28 days in normal air condition. The unit weights and compressive strengths of the cube specimens decreased as the ANH replacement level increased, depending on the decrease in the cement ratio. However, it was observed that the compressive strength of the block specimens increased up to the volumetric replacement level of 1.86 %. As expected, the thermal conductivity values of the specimens decreased with the decrease in unit weight. The most notable change on the specimens occurred in the hardening time. The hardening process of the specimens can be completed up to 90 times faster than the control mixture. In addition, within the scope of the study, three formulations are presented in which the compressive strength and the elastic modulus of the wall sections made with LCHC blocks can be calculated, and thermal conductivity value of masonry block unit can be calculated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The influence of anhydrite III as cement replacement material in production of lightweight masonry blocks for unreinforced non-load bearing walls

KALKAN

Gündüz

2022

Journal of Sustainable Construction Materials and Technologies

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“…The uses of tuff as binder or aggregate in buildings materials has been studied by many researchers in the last decades. Some analyses have provided evidence of the pozzolanic properties of volcanic tuff [9] and the possibility for its use as an admixture in mortar or concrete composition [10][11][12][13][14][15], as lightweight concrete blocks [16,17] or in asphalt mixes [18], while others have shown their potential use as masonry units [19] in masonry structural elements.…”

Section: Introductionmentioning

confidence: 99%

Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

et al. 2021

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The present work examines an innovative manufacturing technique for fired clay bricks, using tuff as a secondary raw material. Samples were made of clay and tuff (0–30 wt.%) fired at 900 to 1100 °C. The chemical and mineralogical compositions and physical and thermal analyses of raw materials were investigated by using SEM-EDS, RX and DTA-TG curves. The samples were analysed from the mineralogical, technological and mechanical points of view. The result show that the tuff’s presence in the clay mixtures considerably reduced the shrinkage of the product during the firing process, and the manufactured samples were of excellent quality. The compressive strength of the bricks varied from 5–35.3MPa, being influenced by the tuff content, clay matrix properties and firing temperatures. Finally, the heat demand for increasing the temperature from room to the firing temperature of the sample with 10% tuff content was 22%.

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“…The thermal conductivity of a variety of rocks is still anisotropic and also high, whether the rocks are subjected to demise or other tectonic processes the thermal Conductivity of the resulting rock collection can either be isotopically or anisotropic ally. Any anisotropic foundations in other respects, even on a microscopic lot of minerals are anisotropic (Gündüz, and Kalkan, 2020). The electrochemical electrical conductivity monitoring techniques such as polarization techniques, potentiometric methods, and galvanic sensors are complicated and require particular expertise in using nitrogen gas for isolation the solutions from oxygen (Balog, et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity of Natural Volcanic Tuff Mix by Cyclic Voltammetry Method

Alkhawaldeh¹

2020

Preprint

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This paper has experimentally measured volcanic tufa electrical conductance. The calculations are carried out in accordance with the potential of cyclic voltammetry in a constant state. The cyclic voltammograms nanoelectrode platinum prepared electrochemically were examined in the range -0.2 to 1.2 V vs. AgCl [Cl-]:1.0 M in the presence and absence of volcanic tuff in the aqueous solution of 1.0 M HCl. The cyclic voltammetry studies show that the Nano platinum film suffers degradation when the potential exceeds +0.85 V, and below this potential, it is quite stable. The redox reaction of the electrode is reversible. The nanoparticle platinum synthesized at low temperature and high acid concentration exhibits higher electronic conductivities. It has been observed that, relative to area under the peak aggregate tests, the use of volcanic concrete was showing a large increase in electrical conductivity. It was shown that with cyclic voltammetry, three well-defined anode peak could be achieved at a power of 0.0, 0.4 and 0.6 V versus Ag/AgCl.

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Lightweight Cellular Hollow Concrete Blocks Containing Volcanic Tuff Powder, Expanded Clay and Diatomite for Non-Load Bearing Walls

Cited by 6 publications

References 14 publications

The influence of anhydrite III as cement replacement material in production of lightweight masonry blocks for unreinforced non-load bearing walls

The influence of anhydrite III as cement replacement material in production of lightweight masonry blocks for unreinforced non-load bearing walls

Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

Electrical Conductivity of Natural Volcanic Tuff Mix by Cyclic Voltammetry Method

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