Preview

Coated Recycled Aggregates

Powerful Essays
Open Document
Open Document
2702 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Coated Recycled Aggregates
Volume 12 Issue 3 Version 1.0 Year 2012 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4596 & Print ISSN: 0975-5861

Global Journal of Researches in Engineering Civil And Structural Engineering

Coated Recycled Aggregate Concrete Exposed To Elevated Temperature
By Arundeb Gupta Somnath Ghosh & Saroj Mandal
Jadavpur University, India Abstract - An experimental investigation has been conducted to study the mechanical as well as micro structural properties of Recycled aggregate concrete (RAC) with uncoated and Geopolymer / Cement coated recycled aggregate exposed to elevated temperature. Fly ash (as replacement of cement) was added while making concrete. Cubes test specimens were prepared and cured under water for 28 days. Test specimens were exposed to different levels of temperature (400oC, 600oC, 800oC) for a period of 6 hours in the muffle furnace. The reduction in compressive strength was observed are in the ranges from 23.4% to as high as 50.3% when exposed to different elevated temperature. MIP (Mercury intrusion porosimetry) test was conducted to estimate the pore diameter and also to appreciate the change of total pore volume due to change of exposure temperature. SEM (Scanning electron microscopy) study was also done to appreciate the micro-structural change in recycled aggregate concrete.

Keywords : Coated Recycled aggregate, Natural aggregate, Concrete, Fly ash, Elevated temperature, Geopolymer, Mercury intrusion porosimetry, Compressive strength. GJRE-E Classification : FOR Code: 090503

Coated Recycled Aggregate Concrete Exposed To Elevated Temperature
Strictly as per the compliance and regulations of:

© 2012. Arundeb Gupta Somnath Ghosh & Saroj Mandal. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License http://creativecommons.org/licenses/by-nc/3.0/), permitting all non commercial use,
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Powerful Essays

    Construction: Recycling and Energy
    • 4983 Words
    • 20 Pages

    Construction: Recycling and Energy

    There is a close relationship between the energy we use and global warming. We can therefore try to reduce the amount of energy we use in construction by specifying materials that have lower embodied energy. Natural timber products are excellent examples as they absorb carbon during growth and cost little to convert into a useable construction product. Cement –based products, contain high levels of embedded energy, careful consideration should be given before using these products or alternative products should be sought.…

    • 4983 Words
    • 20 Pages
    Powerful Essays
    Read More
  • Good Essays

    Sample Lab Aggregates
    • 1935 Words
    • 8 Pages

    Sample Lab Aggregates

    aggregate is fine with a u niform gradation that would not be ideal to use as the sole aggregate for a concrete…

    • 1935 Words
    • 8 Pages
    Good Essays
    Read More
  • Good Essays

    Concrete Lab
    • 896 Words
    • 4 Pages

    Concrete Lab

    Effect of sand to total aggregate ratio on fresh concrete and the appearance of hardened concrete:…

    • 896 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Research Outline
    • 489 Words
    • 2 Pages

    Research Outline

    b. Advantages and disadvantages of using Mussel shells, Crab carapace and PVC’s as aggregates and fillers for concretes…

    • 489 Words
    • 2 Pages
    Good Essays
    Read More
  • Powerful Essays

    Production Geopolymer Materials by Coal Fly Ash
    • 2438 Words
    • 10 Pages

    Production Geopolymer Materials by Coal Fly Ash

    References: [1] Comrie, D. C. and Davidovits, J., “Long term durability of hazardous toxic and nuclear waste disposals”, Geopolymer ’88, First European Conference on Soft Mineralurgy. Compiegne, France, pp. 125-134, [1988] [2] Davidovits, J., Comrie, D. C., Paterson, J. H. and Ritcey, D. J., “Geopolymeric concretes for environmental protection”, Concrete International, pp. 30-40, [1990] [3] Davidovits, 1999a, “Chemistry of geopolymeric systems terminology”, Proceeding of Geopolymer’99 Second International Conference, Editors: Davidovitis, J., Davidovits, R. and James, C., France, pp. 9-37. [4] Davidovits, J., 1999b, “Fireproof geopolymeric cements”, Proceeding of Geopolymer’’99 Second International Conference, Editors: Davidovites, J., R. and James, C., France, pp. 165-169. [5] Hua, X., and Van Deventer J.S.J., 1999, “The geopolymerisation of natural alumino-silicates”, In: Proc. 2nd Internat. Cof. Geopolymere ’99, pp.43-63. [6] Ke, Y. C., “Fire-proof materials”, Ceramic Technology Handbook, Editor: J. M. Wang, Hsinchu, pp.1045-1110, [1994] (in Chinese) [7] Kuo, S. T., “Utilization of fly ash”, Mining Technology, Vol. 29, No. 4, pp. 299-315, [1991] (in…

    • 2438 Words
    • 10 Pages
    Powerful Essays
    Read More
  • Good Essays

    Los Angeles Abrasion Test
    • 974 Words
    • 4 Pages

    Los Angeles Abrasion Test

    The properties of aggregates used in asphalt concretes are very important to the performance of the pavements in which the asphalt concretes are used. Often pavement distress, such as stripping and rutting, can be traced directly to the aggregates used. Clearly, proper aggregate selection is necessary for attaining desired performance. The aggregate used in surface course of the highway pavements are subjected to wearing due to movement of traffic. When vehicles move on the road, the soil particles present between the pneumatic tyres and road surface cause abrasion of road aggregates. The steel reamed wheels of animal driven vehicles also cause considerable abrasion of the road surface. Therefore, the road aggregates should be hard enough to resist abrasion. Resistance to abrasion of aggregate is determined in laboratory by Los Angeles test machine.…

    • 974 Words
    • 4 Pages
    Good Essays
    Read More
  • Powerful Essays

    Marketing Strategy of Ufone
    • 3572 Words
    • 15 Pages

    Marketing Strategy of Ufone

    The material presented by the authors does not necessarily represent the viewpoint of editors and the management of the KASBIT as well as the authors’ institute * Syed Karamatullah Hussainy, Assistant Professor, Khadam Ali Shah Bukhari Institute of Technology (KASBIT), Karachi, Email: **Academic Administrator, Khadam Ali Shah Bukhari Institute of Technology (KASBIT), Karachi, Email: riaz@kasbit.edu.pk ***Assistant Professor, Khadam Ali Shah Bukhari Institute of Technology (KASBIT), Karachi, Email: Kabeer@kasbit.edu.pk * *…

    • 3572 Words
    • 15 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Reuse of Textile Etp Sludge as Construction Material
    • 4007 Words
    • 17 Pages

    Reuse of Textile Etp Sludge as Construction Material

    Textile sludge has been collected from (CETP), Tirupur and studied its chemical, physical and engineering properties. The collected sludge was dried to reduce its moisture content and then sieved to remove the dusts present in that. The sieved sludge was then mixed with the concrete cubes and mortar cubes in 4%, 8% and 12%. The cast specimens were then cured for 7 days, 14 days and 28 days. The cured specimens were tested for its compressive strength. Then hollow blocks, pavement blocks and mortar bricks were cast and cured for 7, 14 and 28 days. The cured specimens were tested for its compressive strength. The strength of the specimens was compared with the reference specimens. The strength of the specimens was found to decrease with increase in the…

    • 4007 Words
    • 17 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Legile
    • 4096 Words
    • 17 Pages

    Legile

    Access to this document was granted through an Emerald subscription provided by Emerald Author Access For Authors: If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service. Information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.com With over forty years' experience, Emerald Group Publishing is a leading independent publisher of global research with…

    • 4096 Words
    • 17 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Dsmac Mobile Crusher for Construction Waste Crushing Plant in Ethiopia Was Installed
    • 456 Words
    • 2 Pages

    Dsmac Mobile Crusher for Construction Waste Crushing Plant in Ethiopia Was Installed

    With the development of urbanization, the city reconstruction is going on. There are a lot of construction waste piled at the same time. It not only occupies land resource, but also brings pollution for environment. However, construction waste is not just the waste, but an effective and recycling resource if used properly. The recycled construction waste can be used as coarse or fine aggregate, which is the substitution for natural aggregate for making concrete, road base material and bricks, and so on. In this process, the choose of crushing equipment plays a critical role.…

    • 456 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Powerful Essays

    Effect of Mixing Time in Fly Ash Block Property
    • 1683 Words
    • 7 Pages

    Effect of Mixing Time in Fly Ash Block Property

    Development Alternatives, B-32, TARA Crescent, Qutab Institutional Area, New Delhi – 110016, India Abstract: This paper presents the effects of mixing time on the compressive strength of fly ash brick. Before designing the mix, sieve analysis of sand and fly ash was carried out and their fineness moduli were determined. Also the specific gravity and calorific value and ash content of fly ash were determined. The CaO content of lime also was determined by lime testing kit. The material batching is based on the composition derived from TARA laboratory report. Composition Sand Flay ash Virgin lime Phosphogypsum…

    • 1683 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Factors Affecting Quality of Work Life: An Analysis on Employees of Private Limited Companies in Bangladesh
    • 5574 Words
    • 23 Pages

    Factors Affecting Quality of Work Life: An Analysis on Employees of Private Limited Companies in Bangladesh

    Volume 12 Issue 18 Version 1.0 Year 2012 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4588 & Print ISSN: 0975-5853…

    • 5574 Words
    • 23 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    L-Box Test Lab Report
    • 1430 Words
    • 6 Pages

    L-Box Test Lab Report

    Abstract --- Reutilization of waste materials in the building industry helps to prevent environmental pollution whilst contributing to the design of more economical buildings. Over the years, there has been increase in the accumulation of tyre rubber due to the increase in the production of vehicles. Sometimes this waste tyre rubber is burned which leads to environmental pollution. So the use of this type waste tyre rubber for the replacement of aggregates in concrete leads to the decrease in the accumulation of waste tyre rubber and also reduces pollution. Another problem that we are facing is the durability of concrete structures. In order to get durable structures adequate compaction by skilled workers is required. Now a day there is a reduction in skilled workers. This leads…

    • 1430 Words
    • 6 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Compressive Strength Changes with Salinity
    • 893 Words
    • 4 Pages

    Compressive Strength Changes with Salinity

    Concrete is one of the most commonly used structural materials. It is made by simply mixing cement, aggregate, sand and water in the “right” proportion. The strength of concrete varies even with the slightest variation in the ratio or quality of its ingredients. Concrete properties are highly influenced by the water type used and its proportion in the concrete mix, but actually there is little knowledge of the effects of different, alternative water sources used in concrete mix design. Therefore, the identification of the level and nature of contamination in available water sources and their subsequent influence on concrete properties is becoming increasingly important.…

    • 893 Words
    • 4 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Investigating the Suitability of Clay Waste Products' Use in Concrete
    • 9677 Words
    • 39 Pages

    Investigating the Suitability of Clay Waste Products' Use in Concrete

    INVESTIGATING THE SUITABILITY OF CLAY WASTE CHIPS FROM CLAY PRODUCTS AS COARSE AGGREGATES IN CONCRETE…

    • 9677 Words
    • 39 Pages
    Powerful Essays
    Read More

Related Topics