Physical properties of RCA: (a) apparent density; …
Download scientific diagram | Physical properties of RCA: (a) apparent density; (b) water absorption; (c) crushing index; and (d) slump. from publication: Effect of Composite Impregnation on ...
Effect of Recycled Aggregate Modification on the Properties …
The apparent density, water absorption, and crushing value are typically used to characterize the basic physical and mechanical properties of aggregates . The apparent density and water absorption were tested for the NCA, RCA, and modified RCA with particle sizes of 4.75–9.5 mm and 9.5–13.2 mm. Additionally, the crushing value of aggregates ...
Influence of the Type of Binder on the Properties of Artificial
In both methods, the aggregates were produced using a pelletizer. The performance of the aggregates was evaluated in terms of bulk crushing resistance, particle and …
Full article: Research on the calculation method of concrete
2.1. Test details. The test includes three parts: in the first part, the physical properties of coarse aggregate are taken as the research object, the effective water absorption, apparent density and crushing index of coarse aggregate are taken as variables; in the second part, the compressive strength of cement mortar is taken as the research object, the water …
IS 2720-8 (1983): Methods of test for soils, Part 8: …
the water density relation as determined by this test, better control of the field compaction of soil fill is possible because the optimum moisture ... to crushing ~during compaction. 0.3 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, *Methods of test ...
Grading Indexes of Recycled Coarse Aggregate
Content of attached old mortar, apparent density, water absorption ratio and crushing value are key factors governing the behavior of recycled coarse aggregate (RCA). …
Water Density Table
The density of water (H 2 O) changes depending on temperature and pressure - as with other substances. The following table lists the density D of water as a function of the temperature under isobaric conditions [1, 2]: * Pure, air-free water H 2 O, * Normal pressure: 1013.25 mbar = 101325 Pa, * Range: 0 to 99.9 ° C (Celsius), * Density D in g/ml,
Water Density Calculator
What is the density of water at 20 °C of salinity S = 35‰ and under the pressure of 1 atm? Let's give our water density calculator a try and find out! Set the temperature to 20 °C. Set salinity to 35‰. Set pressure to 1 atm. And that's it! …
Properties of Recycled Aggregates
For the same particle size, higher the strength of concrete from which the recycled aggregate derived, lower is the density of recycled aggregates (Padmini et al. 2009; Pedro et al. 2014).This was due to the fact that in higher strength of concrete from which the recycled aggregates derived, lower quantity of low-density old mortar adhered to the aggregates.
How does crushing increase the rate of dissolving and when …
Crushing a solid substance can indeed increase the rate of its dissolution in a solvent, such as water. This phenomenon is primarily due to an increase in the surface area of the solid that comes ...
The performance of lateritic stones as concrete …
tests of specific gravity, water absorption, void density, crushing value, ten perceh:t fines, abrasion, angularity number, flakiness and elongation index tests, organic matter content and grading tests were performed on the coarse aggregates. The tests were conducted in …
Development of low-carbon recycled aggregate concrete …
This analysis covered changes in weight, bulk density, water absorption, crushing value, and microstructure. Furthermore, five different concrete mixes were prepared, each varying in the proportion of natural coarse aggregate (NCA), untreated RCCA, and CRCCA. These mixes also incorporated alccofine as a mineral admixture.
Relationship between the water absorption and …
Download scientific diagram | Relationship between the water absorption and apparent density or crushing index of RA [41, 43]. from publication: Durability Studies on the Recycled Aggregate ...
Mechanical performance of recycled aggregate concrete in …
The common characteristics (water absorption, density, and crushing value) of two recycled aggregates with the same particle size were compared. The effects of effective water–cement ratio (e–W/C), aggregate cement ratio (A/C), and recycled aggregate content on the compressive properties of recycled concrete are explained, and the ...
A CASE STUDY OF BRICK PROPERTIES MANUFACTURE …
brick on strength, water absorption, density, hardness, impact, porosity, and crushing strength. After multiple tests, results regarding the properties of bricks included – water absorption varies from 8.80% to 23.93%, porosity varying from 19.28% to 53.99%, specific gravity varying from 2.19 to 4.00, density varying from
Enhancement mechanism of different recycled fine …
The physical properties of different fine aggregates (such as particle gradation, apparent density, water absorption and crushing value) were tested according to GB/T 14684 - 2011, 2011. The pH values of the recycled fine aggregates were determined according to NY/T 1377-2007, 2007. Three kinds of recycled fine aggregates were selected by ...
Enhancement mechanism of microbial mineralization …
This paper evaluated CGA's microbial mineralization modification effect according to the changing law of water absorption, apparent density, crushing index, and ultrasonic pulse resistance of aggregate under optimal mineralization conditions. The precipitates formed by microbial mineralization, aggregate surface micro-morphology, and pore ...
Study on the performance of coal gangue ceramsite steel …
The apparent density, bulk density, water absorption, and crushing value of normal coarse aggregate (NCA), coal gangue (CG), and coal gangue ceramsite (CGC) were tested. The results were shown in Table 2. It could be seen that the apparent density and bulk density of normal coarse aggregate was the highest, followed by CG, and CGC was the lowest.
Hazardous electrolyte releasement and transformation …
Recycling the surging amount of spent lithium-ion batteries (LIBs), especially for accelerating the circulation of the contained valuable materials and reducing the environmental pollutions, becomes extremely urgent for promoting sustainable development [1], [2].Mechanical based pretreatment, which is commonly started at crushing for efficiency and economic advantages, …
The physical and mechanical properties of recycled …
By combining the macroscopic mechanical properties of RA including water absorption, hardness, apparent density and crushing index with the microscopic properties of RA such as pore distribution and mineral composition, the effect of mineralization modification of RA was comprehensively evaluated, and the optimal choice of mineralization ...
Recycling water treatment sludge into a novel eco …
The findings revealed that the crushing strength, loose bulk density, 24-h water absorption, and 28-d water absorption of produced LWA ranged from 0.45 to 3.1 MPa, 1.05 to 1.25 g/cm³, 12.4 to 22% ...
Development of alternative disposals for waste rice husk and …
The increase of sintering temperature reduced water absorption and improved crushing strength. The aggregates with 10-15% rice husk, sintered at 1150 °C had appropriate particle density (1.60-1.73 g/cm 3), water absorption (11.8-16.6%), and crushing strength (6.0-10.6 MPa), which could be suitable for lightweight concrete applications. Low ...
Effects of wet carbonation with ethanol solution on the …
The results showed that wet carbonation with 30 % ethanol solution for 10 min significantly reduced RCA's water absorption and crushing index and increased its apparent density. This is attributed to ethanol's high carbon-solubilizing properties, which allow the RCA to generate more calcium carbonate precipitates to fill the voids and ...
Fine Aggregate: Types, Properties, Testing Methods
Indicates the density compared to water. Density of Fine Aggregate. Loose Bulk Density: 1400–1700 kg/m³. Compacted Bulk Density: 1600–1800 kg/m³. Water Absorption of Fine Aggregate. Should not exceed 3%. Ensures minimal impact on the water-cement ratio. Fineness Modulus. Ranges between 2.0 and 3.0. Indicates the average size of particles.
Analysis of the Dynamic Mechanical Properties and Energy
Figure 13 clearly shows that the crushing average particle size of water-saturated fissured sandstone after dynamic impact decreases gradually as the crushing energy dissipation density increases. This implies that the higher the energy absorption of the rock specimen, the higher the crushing energy dissipation during the deformation and ...
Effects of Compaction Effort on Compaction Behavior and …
Compared to a crushed sandstone particle mixture with the same grain size distribution and the same compaction effort, the maximum dry density of the crushed …
Enhancing quality and strength of recycled coarse and fine …
The effects of high-temperature treatment and ball-mill treatment on recycled coarse aggregates (RCA) and recycled fine aggregates (RFA) were investigated in this study …
Influence of Coal Gangue Powder on the Macroscopic …
The particle size distribution, apparent density, bulk density, crushing index, water absorption, and moisture content of recycled aggregates and natural aggregates were measured in accordance with the current standards GB/T25177-2010 and JGJ52-2006.
Sustainable Use of Sludge from Industrial Park Wastewater …
The test results showed that the water absorption, dry loose bulk density, and crushing strength of the sintered LWAs were 14.2-26.9%, 634-753 kg/m 3, and 1.29-2.90 MPa, respectively. Moreover, the water absorption of the sintered LWAs increased as the percentage of added sludge increased.
Active top layer media
Water absorption Bulk density Crushing strength mm cc/g m²/g wt% kg/m3 N 19 0.3 – 0.4 140 – 160 35 680 103 ; Active top layer spheres specifications ; Dimensions Pore volume Surface area Water absorption Bulk density Crushing strength mm cc/g m²/g wt% kg/m3 N 3 0.3 – 0.5 150 – 170 50 720 ± 10 > 10 ...