journal of aggregate concrete
  • Using Microwave Heating to Completely Recycle

    The aim of this study was to develop a technique for the complete recycling of concrete based on microwave heating of surface modification coarse aggregate (SMCA) with only inorganic materials such as cement and pozzolanic materials (silica fume, fly ash). The mechanical properties of SMCA, which was produced using original coarse aggregate (OCA) and inorganic admixtures, as well as its

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  • Journal Grading Aggregate Ideal For Concrete

    Grading of aggregates concrete.On aggregate grading nrmca expanding the concrete, fig 2 material grading charts for aggregates from maryland a wg combined aggregate and b nwg combined aggregate the value indicated for each grading is the volume of the coarse aggregate divided by the total aggregate volume, expressed as a percent.

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  • Quantitative Measurement of Water Absorption

    14.07.2020· The high water-absorption of lightweight aggregate causes a high slump loss and poor workability of concrete. A prewetting process is usually recommended to compensate for the workability problem, but its application needs more delicate consideration in field. A method is proposed to measure the additional water absorption of lightweight aggregate, and its application in cement paste and

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  • Journal Grading Aggregate Ideal For Concrete

    Grading of aggregates concrete.On aggregate grading nrmca expanding the concrete, fig 2 material grading charts for aggregates from maryland a wg combined aggregate and b nwg combined aggregate the value indicated for each grading is the volume of the coarse aggregate divided by the total aggregate volume, expressed as a percent.

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  • International Journal of Concrete Structures

    The International Journal of Concrete Structures and Materials (IJCSM) provides a forum targeted for engineers and scientists around the globe to present and discuss various topics related to concrete, concrete structures and other applied materials incorporating cement cementitious binder, and polymer or fiber in conjunction with concrete.

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  • Durability of Structural Lightweight Concrete

    This study focuses on the development of durable structural lightweight concrete (LWC) by incorporating expanded perlite aggregate (EPA) in the range of 0 to 20% by weight. In order to ensure its durability when exposed to chloride environment, concrete was produced with low water-to-cement ratio and ordinary Portland cement (OPC) was replaced with 50% and 7% ground granulated blast furnace

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  • Influence of cement and aggregate type on steam

    30.05.2017· The effects of aggregate and cement type on the properties of steam-cured concrete were explored. Ordinary Portland cement (OPC) and high early strength cement (HESC) were used as binders, and recycled and natural aggregates were used as inert mineral filler aggregates in the concrete. The developed concretes exhibited adequate levels of

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  • Properties of Concrete as Influenced by Shape

    03.03.2017· B. P. Hudson, Manufactured sand for concrete, The Indian Concrete Journal, (May 1997) pp. 237-240. [10] L. K. Crouch and R. C. Loutzenheiser, Applying superpave aggregate technology to high-strength PCC, Concrete International, (May 1999) pp. 28-31. [11] R. C. Ahlrich, Influence of aggregate properties on heavy duty pavements, Transportation Research Record 547,

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  • Engineering Properties of Geopolymer Aggregate

    Overall, GPA investigated in this research shows potential as a lightweight coarse aggregate in portland cement concrete, with the significant additional benefit of addressing and reducing the environmental impact of fly ash from coal fired power generation. Recommended. Cited By . Cited By Recommended Properties of Concrete Containing Construction and Demolition Wastes and Fly Ash. Journal of

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  • Neutralization of high pH and alkalinity effluent

    Concrete recycling reduces the need for mining of aggregate, thereby conserving natural resources and often decreasing transport costs and environmental impacts (Carpenter et al., 2007; Soleimanbeigi, Edil, & Benson, 2014). Additionally, recycling concrete reduces the need for landfill space, stockpiles, and waste concrete, as well as illegal concrete dumping. Most importantly

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  • Using Microwave Heating to Completely

    The aim of this study was to develop a technique for the complete recycling of concrete based on microwave heating of surface modification coarse aggregate (SMCA) with only inorganic materials such as cement and pozzolanic materials (silica fume, fly ash). The mechanical properties of SMCA, which was produced using original coarse aggregate (OCA) and inorganic admixtures, as well as its

    Get Price
  • Influence of cement and aggregate type on

    The effects of aggregate and cement type on the properties of steam-cured concrete were explored. Ordinary Portland cement (OPC) and high early strength cement (HESC) were used as binders, and recycled and natural aggregates were used as inert mineral filler aggregates in the concrete. The developed concretes exhibited adequate levels of

    Get Price
  • Concrete with fine recycled aggregates: a review:

    This paper presents a review of the literature published so far on the use of fine aggregates from construction demolition waste used as a partial or total replacement of fine natural aggregates in concrete production. The review presents the initial works on this subject

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  • The Utilization of Recycled Aggregate in High

    01.07.2020· The slump test is the common and practical workability test for fresh concrete and is performed in accordance with ASTM C143 . Fig. 1 shows the slump values for HPCs that are prepared with natural aggregate (b) and RA (c). The maximum detected slump value of HPC without RA was 185 mm .Previous studies, however, had demonstrated that completely replacing natural aggregate with

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  • Use of Recycled Aggregate Concrete IOSR

    Use of Recycled Aggregate Concrete IOSR Journals. From environmental point of view for production of natural aggregates of 1 ton emissions of 00046 million ton of carbon exist where as for 1ton recycled aggregate produced only . COMPARATIVE LCA OF NATURAL AND RECYCLED. In India 25 – 30 million tonnes of CD waste are generated whereas only 5 of it is recycled Hence the life cycle

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  • Effect of recycled concrete aggregates on strength and

    Effect of recycled concrete aggregates on strength and stiffness gain of concrete and on bond strength of steel prestressing strand Michael R. Brandes and Yahya C. Kurama. 88 | MarchApril 018 the ability for precast concrete plants to recycle their own discarded or rejected materials into new concrete would not only reduce the demand for natural coarse aggregates but also eliminate

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  • Influence of cement and aggregate type on

    The effects of aggregate and cement type on the properties of steam-cured concrete were explored. Ordinary Portland cement (OPC) and high early strength cement (HESC) were used as binders, and recycled and natural aggregates were used as inert mineral filler aggregates in the concrete. The developed concretes exhibited adequate levels of

    Get Price
  • Performance of concrete targets mixed with

    01.07.2020· Journals & Books; Register Sign in. Sign in Register. Journals & Books; Help Download PDF Download. Share. Export. Advanced. International Journal of Impact Engineering. Volume 141, July 2020, 103565. Performance of concrete targets mixed with coarse aggregates against rigid projectile impact. Author links open overlay panel Jie Zhang a b c Wensu Chen b Hong Hao b Zhiyong Wang a

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  • Durability of Structural Lightweight Concrete

    This study focuses on the development of durable structural lightweight concrete (LWC) by incorporating expanded perlite aggregate (EPA) in the range of 0 to 20% by weight. In order to ensure its durability when exposed to chloride environment, concrete was produced with low water-to-cement ratio and ordinary Portland cement (OPC) was replaced with 50% and 7% ground granulated blast furnace

    Get Price
  • Laboratory Evaluation of the Performance of

    Thus, the recycled concrete aggregates, recycled brick aggregates, and recycled ceramic aggregates are the most common types of RA (HSC) and foam concrete," Pamukkale University Journal of Engineering Sciences, vol. 23, no. 3, pp. 177–183, 2017. View at: Publisher Site | Google Scholar; R. Rumman, M. S. Bari, T. Manzur, M. R. Kamal, and M. A. Noor, "A durable concrete mix design

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