Hemanth akshaya institute of technology, karnataka, india abstract. The image below is a table showing the compressive strength of a variety of perlite concrete mixes. The purpose of this report is to investigate the types, advantages, mechanical properties of lwc. This classification of structural lightweight concrete is based on a minimum strength. Compressive strength of lightweight aggregate concrete. Explore cellular lightweight concrete with free download of seminar report and ppt in pdf and doc format. High correlation coefficients are obtained, regardless the concrete. Lfc is very light but its strength is decreasing due to the reduction of density. A simplified expression to estimate the compressive strength from upv is suggested. The effects of aggregate type, size, and content on the behavior of normal and highstrength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. Compressive strength and microstructural properties of light. In concrete construction, structural lightweight concrete is an important and give solves weight and durability problems in building.
Basem ali 2015 abstract the purpose of this report is to investigate the types, advantages, mechanical properties of lwc. The test results can be used to determine specification compliance when results of tests on specimens molded at the time of construction are not available or are defective, and to establish the strength properties of existing construction. It has been furnished at all compressive strength levels common to construction practices today. Understanding structural lightweight concrete concrete. Lightweight concrete provides the same compressive strength as normal weight aggregates with approximately the same cement content. At strength level of 2,400 to 5,080 psi 20 to 35 mpa, the relatively similar tensile strength and elastic rigidity of the two components lightweight aggregate. Compressive strength and microstructural properties of light weight high strength cement mortar reinforced with eloxal j. Compressive strength and drying shrinkage of hyssil cellular lightweight concrete under different exposure conditions thesis submitted in fulfilment of the requirements for the degree of master of engineering by research by huat yong lee b. Compressive strength and microstructural properties of. Highlights results for wave propagation in lightweight concrete lwc are presented. Therefore, the replacement of coarse aggregate to 50% and 75% of pks without and with adding pof cannot be considered due to their low compressive strength which achieves below 17mpa at 28 days compared to another specimen. Every concrete mixture lost a significant part of their initial strength when the temperature is reached up to 750c. Concrete, lightweightsee concrete, structural lightweight or specified density.
Properties of lightweight concrete for construction works. Equations for mix design of structural lightweight concrete. Structural lightweight concrete has an inplace density unit weight on the order of 90 to. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm h in. When the lightweight aggregate ratio is increased for each temperature value, the loss of compressive strength of the concrete compared to the initial strength was decreased.
A principal derived from this material is zonolite stabilized concrete aggregate. Polystyrene lightweight concrete polyconcrete zaher kuhail. Concrete mixtures can be designed to provide a wide range of mechanical and durability properties to meet the design requirements of a structure. This is usually called as the characteristic compressive strength of concrete fc fck. A typical performance chart of a given aggregate shows the various strengths attainable with different amounts. Compressive strength of concrete cube test pdf, procedure. Generally speaking, concrete in this range of strength and weight is produced with expanded shales, clays, slates, and slags. Compressive strength of lightweight concrete intechopen.
This study is focused on the experimental investigation of compressive strength and durability properties of lightweight concrete mixtures with fine expanded glass and. Compressive strength and density of lwc are the main points of interest in this chapter. The durability of the nonairentrained lwac containing fine aggregates after 80 years of exposure in the marine environment is excellent. For normal field applications, the concrete strength can vary from 10mpa to 60 mpa. Pdf strength of lightweight concrete jaber h a s s a n alsodi. The compressive strength of lightweight aggregate concrete is usually related to the cement content at a given slump, rather than to the watercement ratio. Cellular lightweight concrete seminar report, ppt, pdf for. This study is focused on the experimental investigation of compressive strength and durability properties of lightweight concrete mixtures with fine expanded glass and expanded clay aggregates.
Compressive strength of concrete is an important element in designing r. Lightweight concretes are also less stiff than the equivalent normal strength concrete. Robust ann and anfis models proposed for predicting the compressive strength of eps concrete. Lightweight foamed concrete lfc is normally created from mixing stable foam to cement paste or mortar. Cip 36 structural lightweight concrete what is structural lightweight concrete. Laboratory investigation of lightweight concrete properties.
The mechanical properties, including compressive strength, tensile strength, flexural strength and fracture toughness, were tested and cataloged. The test results can be used to determine specification compliance when results of tests on specimens molded at the time of construction are not available or are defective, and to establish the strength properties of existing. Seismic performance of lightweight concrete structures. The main aim of using lightweight concrete is to reduce the dead load of a concrete structure, which then allows the structural designer to reduce the size of columns, footings, and other loadbearing elements in the structure. Also explore the seminar topics paper on cellular lightweight concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2017 2018. Why compressive strength test of concrete is important. The concrete mixture can be proportioned with combinations of normalweight and lightweight coarse and fine aggregates to achieve the desired equilibrium. Effect of rate of loading on compressive strength of concrete. These cells may account for up to 80% of the total volumne. High correlation coefficients are obtained, regardless the concrete composition. Compressive strength of concrete decreases with the increase in foam glass aggregate content. The design engineer may request the information for a particular source of lightweight aggregate prior to the design.
After curing for 7, 14 and 28 days, the compressive strength developed in the concrete cubes and weights were measured and compare with the. Also explore the seminar topics paper on cellular lightweight concrete with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech. However the high thermal resistivity of the concrete and some of its desirable properties. High performance structural lightweight concrete utilizing natural perlite aggregate and perlite powder submitted by hasan eser in partial fulfillment of the requirements for the degree of master of science in civil engineering department, middle east technical university by, prof. Prediction of compressive strength and elastic modulus of expanded polystyrene lightweight concrete article pdf available in magazine of concrete research 6717. Pdf flexural strength of lightweight foamed concrete. Concrete, highstrength lightweightstructural lightweight concrete with a 28 day compressive strength of 6000 psi 40 mpa or greater. Processing and characterization of a lightweight concrete. Prediction of lightweight aggregate concrete compressive strength. We have several options of lightweight and semilightweight, structural and nonstructural concrete fill. This paper describes the investigation of mechanical properties of lfc with the inclusion of polypropylene fibres such as compressive strength and flexural strength. Zonolite, when mixed with a portland cement binder, in lieu of sand gravel aggregate and gravel aggregate, produces a lightweight insulating concrete.
Analytical model for compressive strength, elastic modulus and peak strain of structural lightweight aggregate concrete. For structural applications the specified compressive strength should be greater than 2500 psi 17. Compressive strength up to 100 mpa with lightweight of 1800 kgm 3 concrete has been reported. Estimation of the strength development of concrete. Structural lightweight concrete has an inplace density unit weight on the order of 90 to 115 lb ft 3 1440 to 1840 kgm compared to normalweight concrete with a density in the. Structural lightweight concrete has an equilibrium density ranging from 90 to 120 lbft3 3 1440 to 1840 kg m compared to normalweight concrete with a density in the range of 140 to 150 lbft 3 2240 to 2400 kg m. The prestressed concrete beams in the chickahominy river bridge have been fabricated with a lightweight, high strength concrete mixture lthsc. Therefore, to ensure the functional performance and safety of structure it is necessary to determine the true strength of concrete. Structures compressive strength of concrete consequently quality of concrete manufactured is often measured by. Pdf modeling compressive strength of eps lightweight. The purpose of this research is predicting the compressive strength of lwa concrete by proposing an accurate mathematical formulation. The paper proposes the relationships between the compressive strength and density of concrete mixtures with different proportions of the lightweight aggregates mentioned. Lightweight aggregate concrete lwac, standard cube test, under water storage, age effect 1. In addition to conventional compression test, a nondestructive test ndt method will be used to assess the compressive strength of a variety of lightweight concrete mixes.
Pdf on jul 18, 2019, saman hedjazi and others published compressive strength of lightweight concrete find, read and cite all the research you need on. This study is focused on the experimental investigation of compressive strength and durability properties of lightweight concrete mixtures with fine expanded glass and expanded clay aggregates using different microfillers. Perlite conforming to astm c549, and provided in easytoinstall, lightweight bags either plastic or paper may be used as insulation below concrete floors. An investigation was carried out to evaluate the results of the compressive strength of high strength light weight eloxal reinforced cement mortar subject. The compressive strength of concrete is the most common. This report presents the results of the investigation of the response of lightweight concrete to elevated. The twophase material is an ultrahigh strength mortar and expanded polystyrene spheres eps. Review of the rebound hammer method estimating concrete.
Laboratory investigation of lightweight concrete properties vdot. Cip 35 testing compressive strength of concrete what is the compressive strength of concrete. Early notable lwc structures include the port of cosa, the pantheon dome, and the coliseum. Hence, the objective of this research is to determine the compressive strength of papercrete cube with different density of 1. Analytical model for compressive strength, elastic modulus. This test method covers the preparation and testing of molded 75 by 150mm 3 by 6in. Pdf experimental study on lightweight aggregate concrete. Compressive strength and durability properties of structural. The results of the study indicate that both the density and compressive strength of concrete decreased as the percentage replacement increased but replacement of sand by sawdust produced a. Study of lightweight concrete behaviour lightweight concrete can be defined as a type of concrete which includes an expanding agent in that it increases the volume of the mixture while giving additional. Escs aggregate has been used in lightweight concrete for practically every type of structural application. Another mix design was selected that had a design compressive strength less than 6. Weight of the concrete mixtures range from 220 kilograms per cubic meter l4 lbs. False strength of concrete proves fatal as it may fail due to various factors in the long terms.
High carbon ash, recycled aluminum waste and zeolite powders are additional mechanical structures suitable in the production of cellular lightweight concrete. Table 1 density of hardened concrete and compressive strength. The lightweight aggregate concrete has been extensively used in ship building because of its low density. The splitting tensile strength of lightweight concrete is used in structural design criteria. The paper proposes the relationships between the compressive strength and density of concrete mixtures with different proportions of the. Lightweight aggregate lightweight aggregate concrete compressive strength modulus of elasticity peak strain a b s t r a c t in lightweight aggregate concrete lwac, the constituent lightweight aggregates lwas may have a lower strength and elastic modulus than the mortar matrix.
Laboratory test specimens have been cast using the concrete materials and mixture proportions used in the fabrication of the bridge beams. Pdf prediction of compressive strength and elastic modulus. By this single test one judge that whether concreting has been done properly or not. In this project the effect of high rate of loading on compressive strength of concrete has been studied. Pdf effective uses of light weight concrete researchgate. The compressive strength, water absorption and workability. The tensile strength, ultimate strains and shear strengths are all lower than a normal weight concrete with the same cylinder strength. Lightweight concrete mixture is made with a lightweight coarse aggregate and sometimes a portion or entire fine. There is limited deterioration due to freezing and thawing. Ultimate compressive strength, often shortened to compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to tensile strength, which withstands loads tending to elongate. Vermiculite is a form of mica that expands when heated. The lighter the concrete, the greater are the differences to be accounted for in the properties of the concrete. There is a wide range of applications for lightweight concrete. Cellular lightweight concrete seminar report, ppt, pdf.
Compressive strength of concrete using sawdust as aggregate. For structural applications the specified compressive strength. Compressive strength of foamed cellular lightweight concrete. Pdf strength of lightweight concrete jaber h a s s a n. In this paper the compressive strength of a wide range of structural lightweight aggregate concrete mixes is evaluated by the nondestructive ultrasonic pulse velocity method. In this study, novel selfadaptive and formulabased model called multivariate adaptive regression splines optimized using water cycle algorithm marswca is proposed for modeling f c based on mixture proportion. This type of lightweight concrete is made with lightweight porous ceramic material produced by expanding and vitrifying. Accurate prediction of compressive strength f c is one of the crucial problems in the concrete industry. Your choice depends on the desired density and compressive strength. The other objective of this research is to identify the. A study has been conducted in which a lightweight concrete was processed using ceramic microspheres, known as cenospheres, as a primary aggregate. For the first time, models developed for prediction of the strength properties of eps concrete. The compressive strength of the concrete cube test provides an idea about all the characteristics of concrete. The splitting tensile strength corresponding to the specified compressive strength is determined in laboratory evaluations.
The compressive strength, density, and modulus of elasticity of the concretes at each age were the average value of 3 samples. A typical performance chart of a given aggregate shows the various strengths attainable with different amounts of cement for both 7day and 28day tests fig. Pdf compressive strength of lightweight concrete researchgate. The compressive strength of concrete is the most common performance measure used by the engineer in designing buildings and other structures. The compressive strength is measured by breaking cylindrical concrete specimens in a compression testing machine. What is structural lightweight concrete structural lightweight concrete has an equilibrium density ranging from 90 to 120 lbft3 31440 to 1840 kgm compared to normalweight concrete with a density in the range of 140 to 150 lbft 3 2240 to 2400 kgm. Standard test method for compressive strength of lightweight. Depending on the formulation, the compressive strength of regular concrete according to din 1045 can be achieved.
The development and splice length of mild steel reinforcement used in girders and decks made with lightweight concrete was also. The capacity of concrete is reported in psi pounds per sq. Principal research scientist introduction lightweight concrete lwc has been used for more than 2,000 years aci 2r american concrete institute aci, 2003. The compressive strength of lwc is assessed by the ultrasonic pulse velocity upv. Further, karr, hanson and capell 14 reported test results relating to the axial stress strain response and flexural stress distribution in members using lightweight concrete.
The type of recycled paper, size and density does affect the compressive strength. Crushed waste lightweight concrete block has been used successfully as recycled aggregates for making lightweight alkaliactivated concrete using naoh, sodium silicate and fly ash posi et al. Introdocton compressive strength of concrete is the most import ant input data for engineering calculations during the design of reinforced concrete structures. Concrete, normalweight concrete having a density of 140 to 155 lbft. Arab international university faculty of civil engineering student work report strength of lightweight concrete prepared by. The influence of different mix design parameters is analyzed.
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