scholarly journals Mechanical Properties of lightweight Concrete Produced using Pottery Waste as Aggregate

2019 ◽  
Vol 8 (4) ◽  
pp. 9150-9154
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Construction Cost ◽  
Normal Weight ◽  
Dry Density ◽  
Paper Study ◽  
Structural Concrete ◽  
Conventional Concrete ◽  
Concrete Mixtures

Structures built using lightweight concrete have feature of the lower own weight than that of the conventional concrete, where this property contributes to reducing the construction cost. This paper study recycling of pottery waste (PW) to use it as aggregate to develop structural lightweight concrete. To achieve this aim, six concrete mixtures were prepared. Five mixes developed using PW of 20%, 40 %, 60%, 80%, and 100% as a partially and wholly replacement of normal weight aggregate, while the control mix produced using normal weight aggregate of dolomite. The properties; consistency, dry density, water absorption, compressive, tensile and flexural strengths were studied and compared with the same properties of the control mix. Experimental results indicate that using 40, 60, 80, and 100% of PW as dolomite replacement can produce lightweight concrete, also all concrete mixtures containing PW aggregate can classified as structural concrete where their compressive strengths are more than 17 Mpa.

scholarly journals Mechanical Properties of Lightweight Concrete Produced with Expanded Glass Aggregate

2017 ◽  
Vol 9 (5) ◽  
pp. 500-506
Author(s):  
Deividas Rumšys ◽  
Darius Bačinskas ◽  
Edmundas Spudulis
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Lightweight Concrete ◽  
Normal Weight ◽  
Experimental Investigations ◽  
Concrete Mixtures ◽  
Density Relationship ◽  
Glass Aggregate ◽  
Relationship Of ◽  
Alkaline Corrosion

The present paper investigates experimental mechanical properties of lightweight concrete mixes produced with expanded glass aggregate. Different concrete mixtures (totally 12) from normal weight to extremely lightweight structural concrete have been made. The sand by its volume was replaced with the expanded glass. All specimens were tasted after 7 and 28 days of hardening to identify flexural and compressive strength. Density of concrete mixes ranged from 1458 to 2347 kg/m3, and the compressive strength of 40×40×40 mm cubes ranged from 40 to 103 MPa. As a result, strength and density relationship of lightweight concrete was obtained. The performed experimental investigations on freeze­thaw resistance and alkaline corrosion have shown good durability of the designed mixes.

scholarly journals Influence of Rice Husk Ash on the Properties of Concrete

2016 ◽  
Vol 9 (1) ◽  
pp. 29-33
Author(s):  
MB Hossain ◽  
KM Shaad ◽  
MS Rahman ◽  
P Bhowmik
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Lightweight Concrete ◽  
Physical And Mechanical Properties ◽  
Test Results ◽  
Structural Concrete ◽  
Conventional Concrete

This research was carried out to investigate various physical properties of Rice Husk Ash (RHA) and, some physical and mechanical properties of concrete incorporating RHA in different proportions. The concrete specimens were tested at 7, 21 and 28 days after curing. Test results revealed that the specific gravity of RHA was found lower than that of sand. The density of concrete containing RHA was recorded between 80-110 lb.ft-3, which is lower than conventional concrete. Water absorption was found increasing with the increase of RHA content in concrete specimens. There were significant variations in compressive strength values of concrete containing 5%, 10% and 20% volume of RHA. The compressive strength of 5% RHA specimen was 150-200% higher than that of other specimens. Hence, upto 5% replacement of RHA could be recommended for making normal lightweight concrete. The splitting tensile strength was about 9-10% of compressive strength. It was concluded that upto 5% RHA can be used effectively in making normal lightweight concrete. The higher percentage of RHA could be used in making non-structural concrete where the strength of concrete is not concerned.J. Environ. Sci. & Natural Resources, 9(1): 29-33 2016

scholarly journals Characterization of lightweight concrete made of palm oil clinker aggregates

2018 ◽  
Vol 250 ◽  
pp. 03002 ◽  
Author(s):  
Muhammad Sazlly Nazreen ◽  
Roslli Noor Mohamed ◽  
Mariyana Aida Ab Kadir ◽  
Nazry Azillah ◽  
Nazirah Ahmad Shukri ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Palm Oil ◽  
Lightweight Concrete ◽  
Flexural Modulus ◽  
Pulse Velocity ◽  
Normal Weight ◽  
Lightweight Aggregate Concrete ◽  
Fine Aggregate ◽  
Test Results ◽  
Aggregate Concrete

Lightweight concrete (LWC) has been identified as an innovative technique for construction purposes. Lightweight concrete can be categorized into three different types which are no-fine aggregate concrete, lightweight aggregate concrete and aerated concrete. This paper studied the characteristic of the lightweight concrete in term of mechanical properties utilizing the palm oil clinker (POC) as lightweight aggregates. Two mixes of lightweight concrete were developed, namely as POCC100 and POCC50 where each mix utilized 100% and 50% of total replacement to fine and coarse aggregates, respectively. The fresh and hardened POC concrete was tested and compared to the normal concrete (NC). The hardened state of the concrete was investigated through density test, ultrasonic pulse velocity, cube compressive, splitting tensile, flexural, modulus of elasticity and Poisson's ratio. From density test results, POC falls into the category of lightweight concrete with a density of 1990.33 kg/m3, which are below than normal weight concrete density. The mechanical properties test results on POCC100 and POCC50 showed that the concrete compressive strength was comparable about 85.70% and 96% compared to NC specimen, respectively. For the flexural strength, POCC50 and POCC100 were comparable about 98% and 97% to NC specimen, respectively. While splitting tensile strength of POCC50 and POCC100 was only 0.6% and 4% lower than NC specimen, respectively. In terms of sustainability of solid waste management, the application of the POC in construction will reduce the redundant of by-products resulted from the palm oil industries. After undergoing various testing of concrete mechanical properties, it can be concluded that POC aggregates was compatible to be used in ligtweight concrete mix proportion.

scholarly journals THE DEPENDENCE OF THE PHYSICAL MECHANICAL PROPERTIES OF EXPANDED-CLAY LIGHTWEIGHT CONCRETE ON THE COMPOSITION

2010 ◽  
Vol 2 (6) ◽  
pp. 50-55
Author(s):  
Marija Vaičienė ◽  
Jurgita Malaiškienė
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Chemical Composition ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Physical And Mechanical Properties ◽  
Concrete Mixture ◽  
Active Filler ◽  
Binder Material ◽  
Substitute Materials

Binder material is the most expensive raw component of concrete; thus, scientists are looking for cheaper substitute materials. This paper shows that when manufacturing, a part of the binder material of expanded-clay lightweight concrete can be replaced with active filler. The conducted studies show that technogenic – catalyst waste could act as similar filler. The study also includes the dependence of the physical and mechanical properties of expanded-clay lightweight concrete on the concrete mixture and the chemical composition of the samples obtained. Different formation and composition mixtures of expanded-clay lightweight concrete were chosen to determine the properties of physical-mechanical properties such as density, water absorption and compressive strength.

Surface Modification for Porous Artificial Lightweight Aggregate and Mechanical Properties of the Resulting Concrete

2011 ◽  
Vol 117-119 ◽  
pp. 1302-1305
Author(s):  
Ning Liao ◽  
Hong Zhi Cui
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
High Water ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
High Water Absorption ◽  
Change Material

This research is one part of preliminary work for integrated structural-functional energy storage concrete by using porous artificial lightweight aggregate and phase change material. Lightweight aggregate concrete (LWAC) has been applied more and more extensively in recent years, but high water absorption of porous artificial lightweight aggregate (LWA) is inconvenient for LWAC production. In order to improve LWA application, in this paper, two aspects of lightweight aggregate (LWA) study have been carried out, namely, a) LWA surface modification. The effects of different concentration of surface modifier on water absorption of modified LWA were studied. b) Mechanical properties of lightweight aggregate concrete made of the unmodified and modified LWAs Through comparing the water absorption of unmodified and modified LWAs, it can be known that the surface modification for LWA can reduce the water absorption obviously. The three kinds of lightweight concrete possess nearly same strength at 7-day and, at 28-day, the strength of LWAC using 1:20 modified LWA is highest and that of LWAC using 1:5 modified LWA is lowest. 28 days compressive strength of LWAC using 1:20 modified LWA could be up to 46.1MPa.

Effects of Consumption of Cement in Mechanical Properties of Lightweight Concrete Containing Brazilian Expanded Clay

2013 ◽  
Vol 368-370 ◽  
pp. 925-928 ◽  
Author(s):  
Andressa Fernanda Angelin ◽  
Lubienska Cristina L.J. Ribeiro ◽  
Marta Siviero Guilherme Pires ◽  
Ana Elisabete P.G.A. Jacintho ◽  
Rosa Cristina Cecche Lintz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Portland Cement ◽  
Building Materials ◽  
Lightweight Concrete ◽  
Construction Materials ◽  
Lightweight Aggregates ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Conventional Concrete ◽  
New Techniques

Concrete is one of the oldest building materials known to humankind. From 1824, with the advent of Portland cement, concrete assumed a prominent place among the construction materials, due to large amounts of strength, durability and versatility it offered compared to other products, allowing the molding of various forms architectural. Until the early 80s, the concrete remained only as a mixture of cement, aggregates and water, however, in recent decades, due to the development of new techniques and products, the concrete has been undergoing constant changes. The concrete with lightweight aggregates have been used since the beginning of the last century, with low values of density (< 2000 kg/m3), demonstrating the great potential of using this material in several areas of construction [. With the objective of analyzing the influence of the consumption of cement in conventional concrete and light, were molded, tested and compared body-of-evidence containing two different amounts of cement consumption: a) 350 kg/m3 and b) 450 kg / m3. The results were compared with those obtained by other researchers, as well as with [ and [.

scholarly journals Investigation of the Effect of Addition Nano-papyrus Cane on the Mechanical Properties of Concrete

2021 ◽  
Vol 7 (2) ◽  
pp. 226-235
Author(s):  
Faisal K. Abdulhussein ◽  
Zahraa F. Jawad ◽  
Qais J. Frayah ◽  
ِAwham J. Salman
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Physical Properties ◽  
Construction Material ◽  
Dry Density ◽  
Split Tensile Strength ◽  
Maximum Enhancement ◽  
Concrete Mixtures ◽  
Traditional Construction

This paper investigates the effect of nano-papyrus cane ash as an additive on concretes’ mechanical and physical properties. Three types of concrete mixtures, 1:2:4, 1:1.5:3, and 1:1:2 were prepared for each mixture, nano-papyrus ash was added in five different dosages of 0.75, 1.5, 3, 4.5, and 6% by weight of cement; therefore, eighteen mixes would be studied in this work. Physical properties represented by dry density and slump were also measured for each mix. Moreover, to evaluate the mechanical properties development split tensile strength and compressive strength were obtained at age (7 and 28). Results manifested that the adding of nano ash developed the compressive strength and split tensile strength of concrete and the maximum enhancement recognized in the mixes with a content of 4.5% nano-papyrus in each studied mixture in this work. The slump test results indicated that the workability of concrete increased with adding nano-papyrus ash gradually with increasing nanoparticles' content. As well as, dry density was significant increased with nano-papyrus ratio; greater values were recorded in mixtures with 1.5-4.5% content of nano-papyrus. When comparing the concrete mixes used, it was found that the best results were obtained with 1:1:2 mixtures. This remarkable improvement in concrete properties considers the nano-papyrus is considered a cement economical and useful replacement for traditional construction material. Doi: 10.28991/cej-2021-03091649 Full Text: PDF

Lightweight Concrete Precast Panels for the Improvement of Thermal Insulation of Housing with Expanded Polystyrene Beads

2021 ◽  
Vol 1033 ◽  
pp. 163-171
Author(s):  
Alexandra Reto ◽  
Renzo Sanabria ◽  
José Rodriguez ◽  
Alexandra Hinostroza
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Thermal Insulation ◽  
Lightweight Concrete ◽  
Linear Trend ◽  
Precast Concrete ◽  
Expanded Polystyrene ◽  
Dry Density ◽  
Conventional Concrete ◽  
Polystyrene Beads

The precast concrete elements in the construction of buildings are increasingly used due to their better quality control, constructive speed, reduction of the number of workers and less waste of resources compared to conventional construction; for wall applications, to these advantages, the design to ensure thermal comfort requires the improvement of the low thermal insulation of conventional concrete panels. The use of materials with lower thermal conductivity such as Expanded PolyStyrene Beads (EPSB) in lightweight concrete for the construction of precast panels in housing, contributes to improve thermal insulation and the saving operational energy during its operation phase, because the aggregate has a small size, low density and thermal conductivity; applied in higher volumes in concrete, reduces indoor heat loss in cold climates and indoor heat gain in warm climates in housing. The purpose of this research is to study the behavior of lightweight concrete with EPSB for 16%, 26% and 36% addition and evaluate the air-dry density, compressive strength, thermal conductivity, relationship between air-dry density with compressive strength and thermal conductivity. The results indicate that the higher the percentage of EPSB the air-dry density, compressive strength and thermal conductivity decrease; the relationships between air-dry density with compressive strength and thermal conductivity follow a linear trend and are similar.

COMPRESSIVE STRENGTH EVALUATION OF LIGHTWEIGHT CONCRETE WITH EXPANDED GLASS AGGREGATE BY ULTRASONIC PULSE VELOCITY METHOD

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Christopher Collins ◽  
Saman Hedjazi
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Normal Weight ◽  
Unit Weight ◽  
Normal Weight Concrete

In the present study, a non-destructive testing method was utilized to assess the mechanical properties of lightweight and normal-weight concrete specimens. The experiment program consisted of more than a hundred concrete specimens with the unit weight ranging from around 850 to 2250 kg/m3. Compressive strength tests were performed at the age of seven and twenty eight days. Ultrasonic Pulse Velocity (UPV) was the NDT that was implemented in this study to investigate the significance of the correlation between UPV and compressive strength of lightweight concrete specimens. Water to cement ratio (w/c), mix designs, aggregate volume, and the amount of normal weight coarse and fine aggregates replaced with lightweight aggregate, are the variables in this work. The lightweight aggregate used in this study, Poraver®, is a product of recycled glass materials. Furthermore, the validity of the current prediction methods in the literature was investigated including comparison between this study and an available expression in the literature on similar materials, for calculation of mechanical properties of lightweight concrete based on pulse velocity. It was observed that the recently developed empirical equation would better predict the compressive strength of lightweight concrete specimens in terms of the pulse velocity.

scholarly journals Desain Bahan Dasar Campuran Bata Ringan dari Limbah Tambang Emas Pongkor

2018 ◽  
Vol 17 (1) ◽  
pp. 09
Author(s):  
Abdul Majid ◽  
Abdul Rohman ◽  
Raiyyan Rahmi Isda
Keyword(s):  
Water Absorption ◽  
Lightweight Concrete ◽  
Dry Density

Hasil limbah dari tambang emas Pongkor yang berupa tailing diteliti pemanfaatannya sebagai bahan dasar campuran bata ringan. Variasi perbandingan rasio volume semen dengan tailing adalah 1 : 2, 1 : 4, dan 1 : 6 dengan waktu pengerasan 7, 14, 21, dan 28 hari. Parameter pengujian yang dilakukan meliputi densitas (dry density), penyerapan air (water absorption), kuat tekan, kuat tarik belah, dan kuat lentur. Pencampuran tailing sebagai bahan dasar campuran bata ringan menggunakan metode Cellular Lightweight Concrete (CLC) dengan variasi komposisi yang memenuhi syarat ASTM C 969 yaitu densitas < 700 kg/m3, penyerapan air < 25%, dan kuat tekan > 1.4 MPa. Sedangkan untuk kuat tarik belah > 0.25 MPa, yaitu sekitar 10-15% dari kekuatan tekan (Nawy 1998:41) dan kuat lentur > 0,59 MPa (Yothin Ungkoon, 2007). Dari hasil penelitian variasi dengan campuran 1 : 2 (1 semen dan 2 tailing) dengan waktu pengeringan selama 28 hari memiliki hasil pengujian terbaik dan memenuhi semua yang disyaratkan. Pada komposisi tersebut, bata ringan yang dihasilkan memiliki densitas 692 kg/m3, penyerapan air 20,81%, kuat tekan 3,77 MPa, kuat tarik belah 0,48 MPa, dan kuat lentur 0,65 MPa.

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