Structural lightweight concrete with natural perlite aggregate and perlite powder

Download

index.pdf

Date

2006

Author

Aşık, Mesut

Metadata

Show full item record

Item Usage Stats

506
views

934
downloads

Structural lightweight aggregate concrete is an important and versatile material, which offers a range of technical, economic and environmental-enhancing and preserving advantages and is designed to become a dominant material in the new millennium. For structural application of lightweight concrete, the density is often more important than the strength. A decreased density for the same strength level reduces the self-weight, foundation size and construction costs. Structural lightweight aggregate concrete generally used to reduce dead weight of structure as well as to reduce the risk of earthquake damages to a structure because the earthquake forces that will influence the civil engineering structures are proportional to the mass of those structures. In this study, structural lightweight aggregate concrete was designed with the use of natural perlite aggregate that will provide an advantage of reducing dead weight of structure and to obtain a more economical structural lightweight concrete by the use of perlite powder as a replacement of the cement. Six mixes were produced with different cement content and with or without perlite powder. Six mixes divided into two groups according to their cement content. First group had a cement content of 300 kg/m3 and second group had cement content of 500 kg/m3; also the water/cement ratios of groups were 0.49 and 0.35 respectively. Moreover, each group had three sub-mixes with 0%, 20% and 35% of perlite powder as cement replacement. According to results of experimental study, it was concluded that natural perlite aggregate can be used in the production of structural lightweight aggregate concrete. Based on the strength and density results of experimental work, it is possible to produce lightweight concrete with 20 MPa-40 MPa cylindrical compressive strength by using natural perlite aggregate. Also, the use of perlite powder, which will provide economy, can reduce dead weight further and increase performance.

Subject Keywords

Materials of Engineering and Construction., Mechanics of Materials.

URI

http://etd.lib.metu.edu.tr/upload/12607728/index.pdf
https://hdl.handle.net/11511/15945

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Predicting long term strength of roller compacted concrete containing natural pozzolan by steam curing Aslan, Özlem; Turanlı, Lutfullah; Department of Civil Engineering (2006) Roller Compacted Concrete (RCC) is new technology gaining popularity in the recent years due to its low cost, rapid construction, and using opportunity of by-products. RCC is widely used in the world. However, the use of RCC has been restricted to construction of few cofferdams, and limited to local use in dam construction up to date. In this thesis, two types of cement, two types of natural pozzolan, aggregates with varying gradations, and a type of water reducing chemical admixture were used. Prior to car...
Evaluation of air void parameters of fly ash incorporated self consolidating concrete by image processing Özerkan, Nesibe Gözde; Yaman, İsmail Özgür; Department of Civil Engineering (2009) Self consolidating concrete (SCC) is defined as an innovative concrete that does not require vibration for placing and compaction and it is able to flow under its own weight, completely filling formwork and achieving full compaction. Although significant amount of research has been carried out regarding the fresh properties, mix design, placing methods and strength of various SCC mixes, only a very limited amount of work has been done to assess the durability performance of SCC. Concretes in cold climates a...
Experimental investigation of dynamic delamination in curved composite laminates Uyar, İmren; Çöker, Demirkan; Department of Aerospace Engineering (2014) In the aerospace industry, high demand for lightweight structures is fostering the use of composite laminates in a wide variety of shapes, as primary load carrying elements. However, once a composite laminate takes a highly curved shape, such as an L-shape, high interlaminar stresses induced in the curved region causes dynamic delamination formation. This thesis discusses the experimental investigation of delamination in L-shaped CFRP composite laminates under quasi-static shear loading. An experimental set...
Numerical Study on CFRP Strengthening of Reinforced Concrete Frames with Masonry Infill Walls Akin, Emre; Ozcebe, Guney; Canbay, Erdem; Binici, Barış (American Society of Civil Engineers (ASCE), 2014-04-01) In the last decade, a new strengthening methodology has been developed for reinforced concrete (RC) frames with hollow clay tile (HCT) infill walls by means of diagonally applied carbon fiber-reinforced polymer (CFRP) fabrics. In the experimental part of a study conducted by the authors, this user-friendly methodology was experimentally investigated considering different aspect (height/width) ratios of the infill walls. In this study, first a numerical model of the FRP strengthened infill walls strengthened...
Elastic-plastic stress analysis of a thermoplastic composite disc under linear temperature distribution Sayman, O; Pekbey, Y; Sayman, S (SAGE Publications, 2006-01-01) In the present study, an elastic-plastic stress analysis is carried out on a composite thermoplastic disc reinforced by steel fibers, curvilinearly. Radial and tangential stresses are obtained under a liner temperature distribution. The magnitude of the tangential stress component for elastic and elastic-plastic cases is higher than that of the radial stress component. The tangential stress component is compressive and tensile on the inner and outer surfaces, respectively and is the highest on the inner sur...

Citation Formats

M. Aşık, “Structural lightweight concrete with natural perlite aggregate and perlite powder,” M.S. - Master of Science, Middle East Technical University, 2006.