Engineering properties of tuffs in the Sandikli region (Afyon?Turkey) and their possible use as concrete aggregates

Çobanoğlu, İbrahim; Özpinar, Yahya; Özbek, Ahmet

doi:10.1007/s10064-003-0202-9

Cited by 12 publications

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“…The results confirmed the beneficial effect of tuff and zeolite on the durability of concrete. The relatively high level of water absorption of samples incorporating tuff was related to the percentage of clay, the void area inside the tuff, the glassy matrix which connected the particles and the voids between these particles, and the compact nature of the tuff [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Chloride Diffusion and Acid Resistance of Concrete Containing Zeolite and Tuff as Partial Replacements of Cement and Sand

2017

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In this paper, the properties of concrete containing zeolite and tuff as partial replacements of cement and sand were studied. The compressive strength, water absorption, chloride ion diffusion and resistance to acid environments of concretes made with zeolite at proportions of 10% and 15% of binder and tuff at ratios of 5%, 10% and 15% of fine aggregate were investigated. The results showed that the compressive strength of samples with zeolite and tuff increased considerably. In general, the concrete strength increased with increasing tuff content, and the strength was further improved when cement was replaced by zeolite. According to the water absorption results, specimens with zeolite showed the lowest water absorption values. With the incorporation of tuff and zeolite, the chloride resistance of specimens was enhanced significantly. In terms of the water absorption and chloride diffusion results, the most favorable replacement of cement and sand was 10% zeolite and 15% tuff, respectively. However, the resistance to acid attack reduced due to the absorbing characteristic and calcareous nature of the tuff.

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Section: Resultsmentioning

confidence: 99%

Chloride Diffusion and Acid Resistance of Concrete Containing Zeolite and Tuff as Partial Replacements of Cement and Sand

2017

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“…Feldspathic minerals in rocks on weathering commonly yield clay, which will usually increase the W a capacity of such rocks. Cobanoglu et al (2003) had reported high W a values (13.40-25.90 %) in some tuffs from Turkey, and associated the results partly to high percentage of clay inside the tuffs. It is probable that the plagioclase and/or other feldspathic minerals in their tested tuffs samples had undergone appreciable degree of weathering, resulting in the presence of clay within the tuff.…”

Section: Water Absorptionmentioning

confidence: 89%

Some Geological Considerations and Durability Analysis on the Use of Crushed Pyroclastics from Abakaliki (Southeastern Nigeria) as Concrete Aggregate

Aghamelu

Okogbue

2013

Geotech Geol Eng

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Samples of pyroclastic rocks from Abakaliki area (Nigeria) were subjected to geological and geochemical tests to determine the suitability and durability of the rocks as concrete aggregate. Petrographic analysis shows fine-grained texture and predominance of plagioclase (21-60 %) and shaley-muddy lithic fragment, while geochemical analysis classifies the rocks as alkaline. Analysis indicates that the pyroclastics would likely perform marginally well as concrete aggregates, especially in heavy Portland cement concrete and bituminous concrete. This is due to appreciably high values of natural moisture content, low bulk density, relative density and specific gravity, which suggests low durability, high voids and less aggregate absorption in concrete and bitumen mixes. The rocks are rated as moderate to high strength material on the basis of their unconfined compressive strength values, but are very likely to have low durability as buttressed by poor sulphate soundness test results, probably due to high amount of weak minerals. Analyses reveal that the Abakaliki Pyroclastics are not completely satisfactory as concrete aggregates source, despite their origin, texture, strength and economic availability. Hence, caution is required when they are used in concrete projects.

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“…The volcanic tuff had been obtained from Al-Hala mountains of Tafila area in the Southern part of Jordan that is 200 km to the South of Amman. Figure (1) presents the X-ray diffraction (XRD) spectra for the volcanic tuff used in the concrete mix in the current research. The study also investigated the possibility of using tuffs in concrete production.…”

Section: Introductionmentioning

confidence: 99%

Optimum Percentage of Volcanic Tuff in Concrete Production

Sarireh¹

2021

Yanbu Journal of Engineering and Science

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The Tafila area (Jabal Al Hala) is covered with volcanic tuff, which has been tested and studied for its possible use as a construction material in the production of ordinary concrete. The volcanic tuff material was used at 10, 20, 30, 40, and 50% mix proportion of the materials in the concrete mix.It was subsequently tested for density, compressive strength, and flexural strength. The density of volcanic concrete (VC) ranged from 2195 to 2297 kg/m 3 . At 20% of volcanic tuff or volcanic aggregate (VA), the density of VC was 2285 kg/m3 and 2310 kg/m 3 , the compressive strength was 17 MPa and 21 MPa, flexural strength was 5 MPa at the 7 th and 28 th days, respectively. The results showed that the volcanic tuff can be used in concrete production by replacing part of the aggregate (fine and coarse) by the VA, with the proportion of 20% of VA as the optimal value. The VA can be used for VC production where lower density is required for loading, and the VC shows a remarkable density and strength during the testing and construction at sites.

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Engineering properties of tuffs in the Sandikli region (Afyon?Turkey) and their possible use as concrete aggregates

Cited by 12 publications

References 0 publications

Chloride Diffusion and Acid Resistance of Concrete Containing Zeolite and Tuff as Partial Replacements of Cement and Sand

Chloride Diffusion and Acid Resistance of Concrete Containing Zeolite and Tuff as Partial Replacements of Cement and Sand

Some Geological Considerations and Durability Analysis on the Use of Crushed Pyroclastics from Abakaliki (Southeastern Nigeria) as Concrete Aggregate

Optimum Percentage of Volcanic Tuff in Concrete Production

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