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application of asr tests to recycled concrete aggregates

application of asr tests to recycled concrete aggregates

Application of ASR tests to recycled concrete aggregates ...

Oct 15, 2016  Application of ASR tests to recycled concrete aggregates: Influence of water absorption ... the higher expansion is retained to evaluate the reactivity of the aggregate relative to the alkali-silica reaction. The aggregate will be considered as reactive if its expansion is higher than 0.11% ...

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Application of ASR tests to recycled concrete aggregates ...

Abstract Concrete is one of the most abundant construction and demolition wastes. It can be crushed to produce Recycled Concrete Aggregates (RCA) that can eventually be recycled for the manufacture of new concrete. However, the presence of adherent cement paste leads to higher alkalis content in these aggregates that could increase the risk to observe Alkali Silica Reaction (ASR).

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Application of ASR tests to recycled concrete aggregates ...

Concrete is one of the most abundant construction and demolition wastes. It can be crushed to produce Recycled Concrete Aggregates (RCA) that can eventually be recycled for the manufacture of new concrete. However, the presence-of adherent cement paste leads to higher alkalis content in these aggregates that could increase the risk to observe Alkali Silica Reaction (ASR).

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Alkali-Silica Reactivity of Recycled Concrete Aggregates

Recycled Concrete Aggregate Natural Aggregate Mineralogy Concrete Aggregate Origin Source Type Natural Aggregate Mortar Bar Expansion in ASTM C1260 Test (14 d exp. %) Aggregate Concrete Prism Expansion in ASTM C1293 Test (1-year exp %) Abs. Capacity of Recycled Concrete Aggregate (%) Al-R Mixed mineralogy gravel (CA) Exposure block from Ontario ...

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(PDF) Investigating the Alkali Silica Reaction of Recycled ...

Dec 01, 2010  Abstract: Application of crushed recycled glass in concrete materials can offer significant economical and environmental benefits. provided that the alkali-silica reaction 共 ASR 兲

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Alkali-Aggregate Reaction

Alkali-silica reaction (ASR) is of more concern because aggregates containing reactive silica materials are more common. In ASR, aggregates containing certain forms of silica will react with alkali hydroxide in concrete to form a gel that swells as it adsorbs water from

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Alkali-Silica Reactivity of Recycled Concrete Aggregates

Recycled Concrete Aggregate Natural Aggregate Mineralogy Concrete Aggregate Origin Source Type Natural Aggregate Mortar Bar Expansion in ASTM C1260 Test (14 d exp. %) Aggregate Concrete Prism Expansion in ASTM C1293 Test (1-year exp %) Abs. Capacity of Recycled Concrete Aggregate (%) Al-R Mixed mineralogy gravel (CA) Exposure block from Ontario ...

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(PDF) Accelerated ASR testing of recycled concrete

Accelerated ASR testing of recycled concrete. December 2000; Waste Management Series 1; DOI:10.1016/S0713-2743(00)80034-3

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Investigating the Alkali-Silica Reaction of Recycled Glass ...

Dec 12, 2010  Application of crushed recycled glass in concrete materials can offer significant economical and environmental benefits provided that the alkali-silica reaction (ASR) of glass in concrete is properly controlled.

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Microscopic characterization of alkali-silica reaction ...

Jun 01, 2021  Therefore, this work aims to use and adopt the DRI method to evaluate the microscopic differences of ASR-induced expansion and damage development of RCA concrete mixtures made of a highly reactive coarse and fine aggregates, both of which derived from two distinct conditions: a) slightly damaged (i.e. crushed upon reaching 0.05% of expansion ...

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(PDF) RECYCLED CONCRETE AGGREGATE (RCA) FOR THE USE IN ...

Construction Building Materials 2012. 35:421-7. [6] F. Delobel et al. Application of ASR tests to recycled concrete aggregates: Influence of water absorption. Construction and Building Materials 124 (2016) 714–721. [7] Hyungu Jeong.

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Evaluation of Recycled Concrete for Use as Aggregate in ...

(WSDOT) and evaluated the use of recycled concrete as a replacement for natural aggregates in new portland cement concrete pavements. Recycled concrete aggregate (RCA) produced from demolished pavements in three geographically-dispersed locations in Washington state were used to perform tests on aggregate characteristics, fresh concrete ...

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Summary of Testing of Recycled Crushed Concrete

106 tests were performed and the plasticity index was zero (nonplastic) for all tests. Evaluation of Recycled Concrete Dense-Graded Aggregate Base An enormous quantity of testing indicates that re­ cycled crushed concrete consistently complies with all

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Transportation Applications Of Recycled Concrete Aggregate

Freeze-thaw testing of concrete in Minnesota made with recycled D-cracking aggregate indicated a greatly reduced potential for D-cracking when fly ash was used in the mixture.(1) Resource Conservation Reduced land disposal and dumping: The use of recycled concrete pavement eliminates the development of waste stockpiles of concrete.

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INNOVATIVE METHODS TO MITIGATE ALKALI-SILICA

Application of recycled glass as a cement or fine aggregate replacement in concrete could result in major benefits towards a more sustainable design of concrete materials. This is however only possible if the main obstacle, the alkali silica reaction (ASR), is properly addressed and the ASR damage is

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Use of Recycled Aggregates in Construction

Expanded clay lightweight aggregate. Structural grades concrete. Not available. Recycled Aggregates Recycled Concrete Aggregate (RCA) Crushed sound and clean waste concrete of at least 95% by weight of concrete with typical total contamination lower than 1% of the bulk mass. Class 1A RCA is a well graded RCA with no more than 0.5% brick content.

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USE OF ASR DAMAGED CONCRETE PAVEMENTS AS

use of asr damaged concrete pavements as recycled aggregates in road construction. 163 otto-graf-journal vol. 19, 2020 . use of asr damaged concrete pavements as recycled aggregates in road construction . verwendung von akr-geschÄdigten betonfahrbahn-decken als recyclierte gesteinskÖrnung im straßenbau . oliver mielich

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Use of recycled concrete as aggregate. Final report ...

@article{osti_7310891, title = {Use of recycled concrete as aggregate. Final report}, author = {Buck, A D}, abstractNote = {Supplies of natural mineral aggregates are diminishing as their usage increases. Disposal problems exist because of steadily increasing accumulation of solid wastes. In light of these two situations an investigation was made to evaluate the use of crushed waste concrete ...

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DIC Analysis of ASR in Concrete with Recycled Glass Aggregate

Oct 10, 2014  The advantages of DIC inspires the application in studies of concrete alkali silica reaction (ASR). In this study, a MATLAB DIC code is employed as a strain measurement method to enhance the ASTM C1260 Standard Test Method for Potential Alkali Reactivity of Aggregates

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Use Of Recycled Aggregate In Concrete – IJERT

Jan 30, 2013  Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in a large number of construction projects of many European, American, Russian and

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USE OF ASR DAMAGED CONCRETE PAVEMENTS AS

use of asr damaged concrete pavements as recycled aggregates in road construction. 163 otto-graf-journal vol. 19, 2020 . use of asr damaged concrete pavements as recycled aggregates in road construction . verwendung von akr-geschÄdigten betonfahrbahn-decken als recyclierte gesteinskÖrnung im straßenbau . oliver mielich

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Investigating the Alkali-Silica Reaction of Recycled Glass ...

Dec 12, 2010  Application of crushed recycled glass in concrete materials can offer significant economical and environmental benefits provided that the alkali-silica reaction (ASR) of glass in concrete is properly controlled.

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(PDF) RECYCLED CONCRETE AGGREGATE (RCA) FOR THE USE IN ...

Construction Building Materials 2012. 35:421-7. [6] F. Delobel et al. Application of ASR tests to recycled concrete aggregates: Influence of water absorption. Construction and Building Materials 124 (2016) 714–721. [7] Hyungu Jeong.

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The Use of Recycled Concrete Aggregate in a Dense Graded ...

The second part of the research study was to evaluate potential methods of increasing the permeability of recycled concrete aggregate (RCA), while attempting to maintain its structural integrity (i.e. – California Bearing Ratio, CBR).

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BRE Digest 330: Alkali-silica reaction in concrete – the ...

† the reactivity and alkali contribution from recycled aggregate other than recycled concrete aggregate † the classification of reactivity and alkali limit appli- cable to aggregates † the limit of 0.60kg/m3 Na2Oeq alkali from other sources † the appropriate publication medium for UK rules on ASR

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Use Of Recycled Aggregate In Concrete – IJERT

Jan 30, 2013  Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in a large number of construction projects of many European, American, Russian and

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Use of Crushed/Recycled Concrete as Drainable

Recycling of Concrete • Aggregate in concrete comprise about –80 to 85 percent of the mix by mass –60 to 75 percent of the mix by volume • Recycled concrete aggregate (RCA) –Crushed aggregate from existing concrete –Consists of high-quality, well-graded aggregates (usually mineral aggregates), bonded by a hardened cementitious paste 6

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Alkali Aggregate Reaction Topic - American Concrete Institute

Alkali-aggregate reactions can be either alkali-carbonate reactions (ACRs) or alkali-silica reactions (ASRs). In ACR, the reaction is between the alkalies (sodium and potassium) and certain carbonate rocks, particularly calcitic dolomite and dolomitic limestones, present in some aggregates. In ASR, the reaction is between alkalies and certain siliceous rocks or minerals, such as opaline chert ...

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(PPT) CIVIL PROJECT PPT RECYCLED AGGREGATE CONCRETE ...

LITERATURE REVIEW • The applications of recycled aggregate in the construction area are very wide. There are many testing based on the recycled aggregate have been carried out all around the world. • Hanson and Torben (1986) stated that since 1945, the research on recycled aggregate had been carried out in many countries.

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7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN

Sep 12, 2015  The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Aggregates passing 12.5 mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia 10.2 mm and depth 5 cm which is attached to a metal base of impact testing

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Durability Of Concrete With Recycled Aggregates – Results ...

natural aggregate may be replaced by recycled concrete aggregate or recycled mixed aggregates, without a need for additional testing of the concrete. Since 1997 the Dutch standard on aggregates for concrete has been updated to accommodate for the application of specific recycled aggregates, provided their specific mass is over 2000 kg/m3.

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Accelerated Mortar Bar Test Precision with Recycled ...

Jul 01, 2018  Reusing concrete waste as recycled concrete aggregate (RCA) in new concrete is a promising solution. However, the current use of RCA is generally limited to backfill and road base. Additionally, alkali-silica reaction (ASR) can pose a substantial obstacle to highly durable concrete and with limited research on ASR behavior in RCA, effective ...

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UGPTI - Using an Ultra-accelerated Test Method to Evaluate ...

Wyoming Department of Transportation was successful in using recycled concrete aggregate (RCA) on Interstate I-80 with limited ASR damage. Reusing concrete from demolition work has potential to produce durable concrete. A major concern with using RCA as a sustainable building material is its ASR potential, in particular if ASR damaged concrete ...

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Crushed Concrete Aggregates - Properties and Uses of ...

Crushed concrete aggregate eliminates the need for disposal by using the readily available concrete as an aggregate source for new concrete or other applications. Crushed concrete and applications is presented based on the specifications of ACI 555R-01, British

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