dry density of recycled aggregate

Effects of Recycled Aggregate on Concrete Mix …

The purpose of the tests was to measure bulk oven-dry specific gravity, absorption, oven-dry rodded density, and moisture content for fine aggregates, natural coarse aggregates, and recycled aggregates. The absolute volume method was used for designing the concrete mix. The concrete mix was designed using natural and recycled coarse aggregates of two particle sizes (1/2″ and 3/8″). …

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Tests on aggregates, fillers, recycled aggregates …

Asbestos in recycled aggregates: CMA/2/II/C.2: CMA/2/II/C.3: Asbest screening: OVAM Eenheidsreglement bijlage 2: Classification test: RAW (2015) proef 35: B: Floating, non-floating cont. and glass: CMA/2/II/A.22: B: CMA/2/II/A.23: B: Classification test: EN 933-11: B: PTV 406 Annex I: B: 406 Annex J: B: RAW (2015) proef 35: B: Water-soluble ...

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Mix Design of Cement-Stabilized Recycled …

The effects of recycled aggregate replacing levels and cement dosage were analyzed based on compaction test. The results showed that the use of 100% recycled concrete aggregates increased the optimum moisture content and decreased the maximum dry density of base course materials compared to those of natural base materials. The effect of ...

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Lecture 4. Aggregates - Aalto

4.1.1.4 Recycled aggregates (4) • Recycled aggregate is derived from crushing inert construction and demolition waste. It may be classified as . recycled concrete aggregate (RCA) when consisting primarily of crushed concrete or more general . recycled aggregate (RA) when it contains substantial quantities of materials other than crushed concrete. Currently, only the use of coarse aggregate ...

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Use of recycled aggregates in pressed fly ash …

Nevertheless, the compressive strength of PRGCs mixed with recycled aggregates was close to the compressive strength for moderate strength lightweight concrete as per ACI 213. Moreover, the lower thermal conductivity and dry density indicated better insulating properties than that of PRGCs containing SD. The developed PRGCs containing RC and RB in the study can be used for the manufacturing of ...

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AGGREGATES - SOIL PROPERTY TESTING

Dry Density/Moisture Content Relationship. Tests for Constituent Materials in Recycled Coarse Aggregate and Recycled Concrete Aggregate. Contact us …

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ENGINEERING PROPERTIES OF RECYCLED MATERIALS AND LG ...

Recycled Demolition Materials – Research Projects ... - To determine the optimum moisture content & maximum dry density of aggregates and soils. Procedure: Modified compaction: 5 layers, 4.9kg hammer, 450mm hammer drop, 25 blows Standard compaction: 3 layers, 2.7kg hammer, 300mm hammer drop, 25 blows 19. 20 California Bearing Ratio (CBR) tests Objective: - Empirical test for …

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What is bulk density of cement, aggregate, sand? - Quora

8/20/2015· * The bulk density is the mass of the material related to a specific volume and for cement is normally expressed as "kilograms per cubic metre". * The bulk density reflects the volume taken up by the cement plus any air trapped between the p...

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

density of recycled aggregate was on the average by 10% lower compared to the bulk density of natural aggregates [6,9,10]. 2.5. Crushing and abrasion resistance Mechanical properties of recycled aggregate are primarily dependent on the quality of the original

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Study of recycled concrete aggregate quality …

The saturated surface dry density of recycled concrete aggregate is lower than that of natural aggregate and decreases with the maximum size. When recycled concrete coarse aggregate is analysed, the average density is 2437 kg/m³. When the recycled sand density is considered, the average value is 2312 kg/m³. All authors agree with the fact that the adhered mortar is the cause of …

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A Review Paper on use of Recycled Aggregates in Concrete

almost the same if ―water saturated—surface dry recycled aggregate is used. Bulk density of fresh concrete is slightly decreased with increasing quantity of recycled aggregate. International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 Published by, RTCEC - 2018 Conference Proceedings Volume 6, Issue 11 Special Issue - 2018 1. Concrete compressive ...

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10mm & 20mm Recycled Concrete Aggregate

10mm recycled concrete aggregate can be supplied to: Institute of Public Works Engineering Australia (NSW) - IPWEA Class D10 as guided by the "Specification for Supply of Recycled Materials for Pavements, Earthworks and Drainage" Issue No. 3.0 April 2010. Note: All results are indicative only: 10mm Aggregate. 20mm Aggregate. Uncompacted Bulk Density; 1.21 t/m 3. 1.20 t/m 3. Compacted …

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Queensland Product List - Crushed Aggregate, Concrete ...

9 rows· Density (Loose) BCC; 5mm Recycled Concrete Aggregate: Bedding sewer & water pipes. …

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SOME TESTS ON CREEP AND SHRINKAGE OF RECYCLED …

Dry density Density class 1) Moisture content 2) Compressive strength 3) Strength class 1) Young´s modulus kg/m3-% by vol. MPa-GPa 1860 D2.0 6.7 29.2 LC 20/22 19.5 1520 D1.6 11.9 15.2 LC12/13 9.3 1900 D2.0 7.4 37.6 LC30/33 21.6 1580 D1.6 12.5 30.6 LC20/22 14.6 1) According to prEN 206 2) Calculated from weight loss during drying 3) 100 mm cubes 5. DEFORMATION OF HARDENED …

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The Effect of Aggregate Properties on Concrete

Aggregate can be found in four different moisture states that include oven-dry (OD), air-dry (AD), saturated-surface dry (SSD) and wet. Of these four states, only OD and SSD correspond to a specific moisture state and can be used as reference states for calculating moisture content. In order to calculate the quantity of water that aggregate will either add or subtract to the paste, the ...

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Utilization of Recycled Highway Aggregate by Replacing it ...

Recycled aggregate, maximum dry density, moisture content, California bearing ratio, Introduction The use of supplementary aggregate material is essential in developing low-cost construction materials and ecological benefits for use in developing countries. It is estimated that the construction industry in India generates about 12-14 million tons of wastes annually. Construction and demolition ...

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Recycled Glass Aggregate (RGA) Case Studies - …

RGA was used as fill in a 2:1 ratio with recycled concrete aggregate (RCA). Materials were blended on-site and compacted in lifts to exceed the required compaction minimum of 95% Maximum Dry Density. Geotechnical performance was confirmed by Geo-Technology Associates.

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ABSTRACT - American Concrete Institute

Table (4-4). Dry Density and Water Absorption (%) In Table (4-4), the fresh density was in the range of 2230 to 2490 kg/m3, while the results of dry density were in the range of 2090-2390 kg/m3, for all types of replacement material. it can be seen that the SCC containing recycled concrete aggregate of 25% has more density than that

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The Utilization of Recycled Masonry Aggregate and Recycled ...

for recycled aggregate concrete (RAC) negatively influences mechanical properties and durability. However, RMA has a positive impact on thermal properties. Many studies of the properties of RMA and its e ect on the mechanical properties of RAC have been published [3–29]. It has been recognized that RMA di ers from NA mainly in terms of water absorption, density, and resistances, for ...

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ABSTRACT - American Concrete Institute

Table (4-4). Dry Density and Water Absorption (%) In Table (4-4), the fresh density was in the range of 2230 to 2490 kg/m3, while the results of dry density were in the range of 2090-2390 kg/m3, for all types of replacement material. it can be seen that the SCC containing recycled concrete aggregate of 25% has more density than that

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CDW RECYCLED AGGREGATES FOR DRY CAST CONCRETES

CDW RECYCLED AGGREGATES FOR DRY CAST CONCRETES Sérgio Angulo [email protected] BACKGROUND •Most of production of aggregates is destined for cementitious materials. •The consumption of aggregate in dry cast concrete represents the 24% of Brazilian total aggregates' consumption •Dry cast concretes are ecoefficient –compaction permits …

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Recycled Aggregates - Portland Cement …

Recycled concrete aggregates produced from all but the poorest quality original concrete can be expected to pass the same tests required of conventional aggregates. Recycled concrete aggregates contain not only the original aggregates, but also hydrated cement paste. This paste reduces the specific gravity and increases the porosity compared to ...

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Mix Design and Properties of Recycled …

From this table it can be noticed that the packing density of recycled aggregates is lower than that of natural aggregates due to the presence of old cement paste. Table 3 Packing densities of used aggregates. Full size table. Optimal proportions of granular mixtures are reported in Table 4 where an increase in the sand content can be observed for recycled aggregates to assess the highest ...

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Feasible use of recycled concrete aggregates …

2.4. Comparison of individual aggregate properties. Each value presented in Table 1, Table 2, Table 3 is an average of two measurements. Test methods employed for determining the properties of the aggregate are included in each table,,,, .. In general, natural aggregates had the highest density values followed by recycled concrete aggregate and crushed clay brick.

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Recycled Concrete Aggregates: A Review | …

The aggregate characteristics of density, porosity, and water absorption are a primary focus in determining the proper concrete mix. These characteristics should be known to limit absorption capacity of aggregates to no more than 5 % for structural concrete, and thus the proportion of RCA is often limited in concrete mixes (Exteberria et al. 2007), as is discussed later in this paper. Table 1 ...

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The Effect of Aggregate Properties on Concrete

Aggregate can be found in four different moisture states that include oven-dry (OD), air-dry (AD), saturated-surface dry (SSD) and wet. Of these four states, only OD and SSD correspond to a specific moisture state and can be used as reference states for calculating moisture content. In order to calculate the quantity of water that aggregate will either add or subtract to the paste, the ...

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Mechanical Properties Of Recycled Aggregates …

Known source of RCA or unknown source of RCA has not major effect for Water absorption, specific gravity and density. Both types of aggregates are showing almost similar properties. Elongation and flakiness index were observed little higher for RCA. Advertisements. 2.6 Recycled Concrete as Aggregate for Structural Concrete Production. A comparative analysis of the experimental results of …

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