Effect of aggregate grain size distribution on properties of permeable concrete

Yazıcı, Şemsi; Mardani‐Aghabaglou, Ali

doi:10.4314/jfas.v9i1.20

Cited by 5 publications

(2 citation statements)

References 18 publications

(14 reference statements)

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“…The decrease in strength relative to the replacement of aggregates can be attributed to the grain size variation between rubber and gravel. Other similar studies also showed that the increase in grain diameter resulted in strength reduction [20]. Figure 10 presents the trend for infiltration rate with respect to the density of specimens.…”

Section: Trend Analysismentioning

confidence: 61%

Effect of Shredded Rubber Tire as Partial Replacement for Coarse Aggregates in Fly Ash-Based Pervious Concrete

Nicole Arac

2024

GEOMATE

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The need to improve traditional concrete practices and the existing waste problem in the Philippines has opened an opportunity for by-products, such as scrap rubber tires and fly ash, as sustainable alternative materials in pervious concrete. This study investigates the effect of shredded rubber tires and fly ash content on the strength and permeability of pervious concrete. A total of 15 mix designs, with varying replacement ratios based on weight, were produced and tested for compressive strength, split tensile strength, and infiltration rate. In particular, the percentage replacements tested in the study were 0%, 10%, 20%, 30%, and 40% for the shredded rubber tires, while fly ash ratios were set at 0%, 10%, and 20%. Two-way ANOVA test and desirability function statistical analyses were conducted to determine the optimal replacement of shredded rubber tires and fly ash. Results showed that the addition of shredded rubber tires produced a decreasing trend, while increasing the fly ash content exhibited an increasing trend, both on the compressive strength and split tensile strengths. On the other hand, the infiltration rate increased with the addition of rubber aggregates. The research findings also indicated that using up to 10% shredded rubber tires, with 10-20% fly ash, yields a more desirable pervious concrete than the conventional mix.

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Section: Trend Analysismentioning

confidence: 61%

Effect of Shredded Rubber Tire as Partial Replacement for Coarse Aggregates in Fly Ash-Based Pervious Concrete

Nicole Arac

2024

GEOMATE

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“…Развитие математического моделирования и решение задач плотной упаковки [13−20] позволяют осуществить такой подход к проектированию состава пенобетона. Если в области производства тяжёлого бетона, подбору зернового состава заполнителя уделено достаточно внимания [21,22], на предмет сокращения расхода цемента и воды, то в пенобетоне эта тема почти не затронута.…”

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On the Question of Choosing the Optimal Water-Cement Ratio in the Production of Thermal Insulating Foam Concrete

Vinokurova

Baranova

2022

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The article considers the influence of the water-cement ratio on the formation of the structure of thermally insulating foam concrete, having the D300 average density grade. The basis for the analysis is the contradiction between the experimentally obtained direct dependence of the strength of foam concrete on the water-cement ratio and the practice of improving the structure of the material due to water reduction. The computation of the optimal amount of water in the foam concrete mixture based on the method of absolute volumes is presented. The calculation includes a formula for determining the volume of the interpore space depending on the thickness of the interpore partition, the cell diameter and the type of packing. The actual indicators collected during the experiment confirm the results of the calculations. The influence of the amount of water in the foam concrete mixture on the quality of the foam concrete is evaluated by the compressive strength and the macrostructure character of the material. The strength is determined by the destructive method. The structure is studied using an optical microscope in combination with image processing software. The greatest strength is possessed by a material with a partition thickness exceeding the maximum size of the cement grain, provided that the volume of the interpore space and the sum of the absolute volumes of the components of the foam concrete mixture are equal. A structure with closed pores and dense interpore partitions is observed in foam concrete on a protein foam former with a water-cement ratio, taking into account water in the foam, equal to 0.7.

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Effect of fiber type, size, and utilization rate on mechanical and thermal properties of lightweight concrete facade panels

Beytekin,

Kaya,

Mardani

et al. 2024

Structural Concrete

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It was understood that various studies were carried out on the strength, permeability, durability, increasing the thermal performance of lightweight concrete facade panels, and sustainable and energy‐efficient concepts. It was observed that fiber was added to the mixture to improve the properties in question. However, it was determined that contradictory results were obtained due to the large number of active parameters and whether the fiber was distributed homogeneously in the matrix. In this study, the effects of fiber type, length and usage rate on the strength, energy absorption capacity, elasticity modulus, water absorption, and thermal performance of lightweight concrete mixtures were investigated. For this purpose, three different types of fibers of different lengths: polypropylene (3, 6, and 12 mm), glass (13 and 25 mm) and polyamide (6 and 12 mm) were used at 0%, 0.25%, 0.50%, and 0.75% of the total volume. It was determined that the mixture containing 0.25% polypropylene fiber with a length of 3 mm exhibited the best performance in terms of both mechanical and thermal properties. In terms of these features, it was understood that the mixtures with 12 mm polypropylene with a usage rate of 0.75% and 6 mm polyamide fibers with a usage rate of 0.50% had the weakest performance.

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Effect of aggregate grain size distribution on properties of permeable concrete

Abstract: In this study, the effect of aggregate grain size distribution and water/cement (W/C) ratio on the mechanical properties of permeable concrete is investigated. The aim of this study is to prepare permeable concrete mixture with optimum properties in terms of strength and

Cited by 5 publications

References 18 publications

Effect of Shredded Rubber Tire as Partial Replacement for Coarse Aggregates in Fly Ash-Based Pervious Concrete

Effect of Shredded Rubber Tire as Partial Replacement for Coarse Aggregates in Fly Ash-Based Pervious Concrete

On the Question of Choosing the Optimal Water-Cement Ratio in the Production of Thermal Insulating Foam Concrete

Effect of fiber type, size, and utilization rate on mechanical and thermal properties of lightweight concrete facade panels

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