The Experts below are selected from a list of 225 Experts worldwide ranked by ideXlab platform

Suriya S Prakash - One of the best experts on this subject based on the ideXlab platform.

  • mechanical behavior of sustainable hybrid synthetic fiber reinforced cellular Light Weight Concrete for structural applications of masonry
    Construction and Building Materials, 2015
    Co-Authors: Mohammad Abdur Rasheed, Suriya S Prakash
    Abstract:

    Cellular Light Weight Concrete (CLC) masonry has gained tremendous popularity in recent decades owing to its sustainability, density, low thermal conductivity and use of less mortar joints. The objective of this study is to develop a high performance fiber reinforced cellular Concrete to provide a better alternative than aerated autoclaved Concrete blocks for structural applications of masonry. Use of micro-fibers (fibrillated) enhances pre-cracking behavior of masonry by arresting cracks at micro-scale, while macro (structural) fibers induce ductile behavior in post-peak region by arresting the crack propagation soon after the crack initiation. In particular, the mechanical behavior of CLC cylinders under pure compression and CLC blocks under flexure with and without polyolefin structural fiber reinforcement as well as hybrid fiber reinforcement is investigated. Test results indicate that the addition of structural fibers improved the compressive strength up to 66.8% for 0.55% volume fraction. Post-peak ductility improved up to a factor of nine in case of compression for 0.55% volume fraction. Similarly, it resulted in 15.31% increase of post-peak flexural ductility by a hybrid addition of 0.44% and 0.02% volume fraction of macro and micro fibers respectively. Hybrid fiber reinforcement enhanced the peak strength and ductility which indicated better crack bridging both at micro and macro levels.

Mohammad Abdur Rasheed - One of the best experts on this subject based on the ideXlab platform.

  • mechanical behavior of sustainable hybrid synthetic fiber reinforced cellular Light Weight Concrete for structural applications of masonry
    Construction and Building Materials, 2015
    Co-Authors: Mohammad Abdur Rasheed, Suriya S Prakash
    Abstract:

    Cellular Light Weight Concrete (CLC) masonry has gained tremendous popularity in recent decades owing to its sustainability, density, low thermal conductivity and use of less mortar joints. The objective of this study is to develop a high performance fiber reinforced cellular Concrete to provide a better alternative than aerated autoclaved Concrete blocks for structural applications of masonry. Use of micro-fibers (fibrillated) enhances pre-cracking behavior of masonry by arresting cracks at micro-scale, while macro (structural) fibers induce ductile behavior in post-peak region by arresting the crack propagation soon after the crack initiation. In particular, the mechanical behavior of CLC cylinders under pure compression and CLC blocks under flexure with and without polyolefin structural fiber reinforcement as well as hybrid fiber reinforcement is investigated. Test results indicate that the addition of structural fibers improved the compressive strength up to 66.8% for 0.55% volume fraction. Post-peak ductility improved up to a factor of nine in case of compression for 0.55% volume fraction. Similarly, it resulted in 15.31% increase of post-peak flexural ductility by a hybrid addition of 0.44% and 0.02% volume fraction of macro and micro fibers respectively. Hybrid fiber reinforcement enhanced the peak strength and ductility which indicated better crack bridging both at micro and macro levels.

Bilal Abdul Fatah Ahmed - One of the best experts on this subject based on the ideXlab platform.

  • employment the plastic waste to produce the Light Weight Concrete
    Energy Procedia, 2019
    Co-Authors: Awham M Hameed, Bilal Abdul Fatah Ahmed
    Abstract:

    Abstract In recent years, the use of recycled plastic aggregate (RPA) as an alternative aggregate material has been considered to lower the environmental influence of both Concrete and waste of plastics. Recycled plastic aggregate Concrete (RPAC) is now known as a highly promising technology that can contribute to resource efficiency in the construction industry. In this paper, the first experimental study of the properties of Concrete manufactured using recycled Polyethylene terephthalate (PET) Flake aggregates is presented. Five batches of Concretes were manufactured with different PET contents (1%, 3%, 5%, 7%, 10%) by the Weight of Portland cement. The effect of RPA content on the compressive strength, flexural strength, splitting tensile strength and hardened density of each batch is studied. The results showed that the use of PET at 1% lead to increase the compressive strength in 58% compared to the reference batch (made without waste). Flexural strength results showed that the use of PET at 1%, 3% increases the values flexural strength in 23.11%, 25.59 respectively comparing with reference batch. Also, the ratio 1% of PET gives the optimum value of splitting tensile strength with increment ratio 130%. The density values clearly decreased with increasing the percentage of PET content, the decreasing ratio of density close to14% especially at 10% of PET.

Osman Simsek - One of the best experts on this subject based on the ideXlab platform.

  • effects of elevated temperature on compressive strength and Weight loss of the Light Weight Concrete with silica fume and superplasticizer
    Cement & Concrete Composites, 2008
    Co-Authors: Emre Sancak, Dursun Y Sari, Osman Simsek
    Abstract:

    In this study, structural Light-Weight Concretes produced by Pumice (LWC) and Concretes with normal-Weight aggregate (NWC) were investigated. Compressive strength and Weight loss of the Concretes were determined after being exposed to high temperatures (20, 100, 400, 800, 1000 °C). To achieve these objectives, 12 different types of Concrete mixtures were produced. In producing the mixtures, silica fume (SF) was used to replace the Portland cement in the ratios of 0%, 5% and 10% by Weight. Half of the mixtures were obtained by adding superplasticizers (SP) to the above mixtures in the ratio of 2% by Weight. In conclusion; unit Weight of LWC was 23% lower than that of NWC. The LWC containing 2% SP could retain 38% of the initial compressive strength. Rate of deterioration was higher in NWC when compared to LWC. The loss of compressive strengths increased depending on the ratio of using SF at about 800 °C and over.

Jason Ingham - One of the best experts on this subject based on the ideXlab platform.

  • Light-Weight Concrete with artificial aggregate manufactured from plastic waste
    Construction and Building Materials, 2020
    Co-Authors: Enrique Del Rey Castillo, Nasser Almesfer, Opinder Saggi, Jason Ingham
    Abstract:

    Abstract The inclusion of an artificial aggregate manufactured using plastic waste to develop a Light-Weight Concrete was studied. Five separate mixes were designed, progressively increasing the amount of artificial aggregate and measuring the fresh and hardened Concrete properties, and it was found that the slump and density of the Concrete decreased as the amount of artificial aggregate in the Concrete increased. Both the compressive and the tensile Then the mix that was most suitable to the requirements of the study in terms of density and compressive strength was chosen for further investigation in stage two. Fifteen percent of the natural aggregate by Weight was replaced in this optimal mix, which equals more than thirty-seven percent of the volume given the lower density of the manufactured aggregate compared to natural aggregate. A larger number of specimens and more detailed testing was undertaken for stage two when compared to stage one, including establishing the compressive stress–strain relationship and the modulus of elasticity of the newly developed Concrete mix. The results indicated that plastic aggregates manufactured following shredding, palletisation and extrusion processes can be used to obtain a LightWeight Concrete (1800 kg/m3) while having relatively good compressive strength properties (20 MPa at 28 days). These results were higher than other results previously reported in the literature on the replacement of coarse aggregate with plastic, but were marginally lower than results reported in the literature for studies where fine aggregate was replaced with plastic. It was concluded that the Concrete mix reported herein can be used for a wide spectrum of applications such as non-structural facades and sound barriers for highways. Further research is required to investigate the durability of Concrete with the artificial aggregate included in the mix, especially if the product is to be subjected to wear and tear such as in driveways or warehouse slabs.