scholarly journals The Effect of Addition on Pumice and Fiber on Compressive and Fluxural Strength Precast Lightweight Concrete

2020 ◽  
Vol 5 (1) ◽  
pp. 14
Author(s):  
Indrayani Indrayani ◽  
Andi Herius ◽  
Arfan Hasan ◽  
Ahmad Mirza
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Specific Gravity ◽  
Building Material ◽  
Lightweight Concrete ◽  
Test Results ◽  
Fiber Concrete ◽  
The Government ◽  
Flexural Tests ◽  
Compressive Tests

Most of the construction uses concrete as the main building material because concrete has many advantages compared to other materials. Concrete has a high enough weight, various attempts were made to reduce the weight of the concrete for example using lightweight aggregates or concrete made without sand or concrete made hollow Innovations in the development of precast lightweight concrete are urgently needed at this time to support the development of development that is being carried out by the government. From the studies that have been carried out on lightweight concrete and fiber concrete, this research will develop the results of previous studies, namely by combining lightweight concrete and fiber concrete to obtain precast lightweight concrete. This research was conducted to find out how much influence the use of pumice and and fiber on compressive strength and flexural strength of precast lightweight concrete. Variations in the addition of a mixture of pumice with aggregate are divided into 4  comparisons, namely 0: 100, 20: 80, 40: 60, 60: 40, where each mixture is added 0.1% fiber from the volume of concrete, then printed in cube and beam molds.  Compressive tests were carried out on the cube and flexural tests were carried out on beams. From the test results was obtained that the addition of pumice to the concrete mixture can cause a decrease in compressive strength of the concrete from 202 kg/cm2 to 129 kg/cm2 whereas with the addition of fiber there is an increase in flexural strength is 24.48 kg/cm2. The specific gravity obtained is 1.664 gr/cm3 so this concrete can be classified into lightweight concrete.

scholarly journals Scrutinization of Flexural Practices of Light Weight Concrete by using Sisal Fibres and Bamboo

2020 ◽  
Vol 9 (2) ◽  
pp. 131-135
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Natural Fibre ◽  
Partial Replacement ◽  
Test Results ◽  
Sisal Fibre ◽  
Concrete Members ◽  
Flexural Member

Lightweight concrete is the way to reduce the weight as well as deflection in concrete members without affecting its properties. Many of the researches are in progress to find a substitute for this lightweight material. In this project, we would like to take the naturally available fibre named sisal fibre and bamboo as partial replacement material. The influence of sisal fibres on the strength of concrete is taken as the main objective of this experimental study. The addition of natural fibre to the lightweight concrete will enhance the various strength parameters like flexural strength, compressive strength, and increase the ductile behaviour. In the present work, it is aimed to investigate the mechanical properties of lightweight concrete with a replacement of sisal fibre for cement and bamboo as a replacement in coarse aggregate in different percentages. The compressive strength, flexural strength, deflection of the beam is studied with consideration of M25 concrete specimens. Totally 36 number of 500 x 100 x 100mm flexural member cast and tested. It is recommended up to 5% replacement of coarse aggregate with bamboo and 5% addition of sisal fibres with cement provide at M25 grade of concrete gives the optimum increases of strength values. The test results indicated that the sisal fibres were effective in improving the strength of lightweight concrete.

Effects of Fibre on Drying Shrinkage, Compressive and Flexural Strength of Lightweight Foamed Concrete

2012 ◽  
Vol 587 ◽  
pp. 144-149 ◽  
Author(s):  
Hanizam Awang ◽  
Md Azree Othuman Mydin ◽  
Ahmad Farhan Roslan
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Lightweight Concrete ◽  
Drying Shrinkage ◽  
Test Results ◽  
Polypropylene Fibres ◽  
Load Bearing ◽  
Foamed Concrete

The present study covers the use of fibre in lightweight foamed concrete (LFC) to produce the lightweight concrete for use in construction of non-load bearing elements. LFC with 600, 1000 and 1400 kg/m3 density were cast and tested. Polypropylene fibres with different percentage were used into LFC and the resulting products were compared to normal LFC. Compressive strength, flexural strength and drying shrinkage tests were carried out to evaluate the mechanical properties up to 180 days. The addition of fibres in LFC showed no contribution on compressive strength but improvement in the flexural and shrinkage test results.

scholarly journals PEMBUATAN BETON CAMPURAN STYROFOAM MENGGUNAKAN AGREGAT PASIR BENGAWAN SOLO

UKaRsT ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 27
Author(s):  
Achmad Hasyim ◽  
Dwi Kartikasari
Keyword(s):  
Compressive Strength ◽  
Composite Materials ◽  
Specific Gravity ◽  
Building Material ◽  
Research Method ◽  
Strength Testing ◽  
Test Results ◽  
Dead Load ◽  
River Sand ◽  
Compressive Strength Of Concrete

Concrete becomes a building material that has an important role and is in great demand. Composite materials concrete that is easily obtained is the advantages of concrete today. The specific gravity of concrete depends on the material making up of concrete. The smaller specific gravity of concrete will make the concrete have a lightweight; this will affect the dead load of the building. This research aims to find out how the process and also the effect of styrofoam mixture using Bengawan Solo River sand with the initial quality used is K-250. The research method used is the experimental method and even the study of previous research theories. Test specimens used are cylindrical, with variations in the percentage of the addition of styrofoam 0%, 1%, and 1.5%. Compressive strength testing is performed at the age of 7 days of concrete. The test results show that the addition of styrofoam in a concrete mixture affects the compressive strength of concrete, with the addition of styrofoam the percentage of 1% obtains a compressive strength of 21.899 MPa, while the addition of styrofoam percentage of 1% obtains a compressive strength of 20.453 MPaBeton menjadi material bangunan yang memeiliki peran penting dan banyak diminati. Material penyusun beton yang mudah didapatkan menjadi keunggulan beton saat ini. Berat jenis beton bergantung pada material penyusun beton. Berat jenis beton yang lebih kecil akan membuat beton memiliki bobot yang ringan, hal tersebut akan berpengaruh pada beban mati bangunan. Penelitian ini dilakukan bertujuan untuk mengetahui bagaimana proses dan pengaruh campuran styrofoam menggunakan pasir Sungai Bengawan Solo dengan mutu awal yang dgunakan yaitu K-250. Metode penelitian yang digunakan yaitu metode eksperimental dan juga kajian teori penelitian terdahulu. Benda uji yang digunakan berbentuk silinder dengan variasi prosentase penambahan styrofoam 0%, 1% dan 1.5%. Pengujian kuat tekan dilakukan saat umur beton 7 hari. Hasil pengujian menunjukkan penambahan styrofoam dalam campuran beton mempengaruhi kuat tekan beton,  dengan  penambahan  styrofoam prosentase 1% memperoleh kuat tekan sebesar 21,899 MPa, sedangkan penambahan styrofoam prosentase 1% memperoleh kuat tekan sebesar 20,453 Mpa. 

scholarly journals Properties of High-Strength Flowable Mortar Reinforced with Palm Fibers

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Eethar Thanon Dawood ◽  
Mahyuddin Ramli
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Test Results ◽  
Palm Fiber ◽  
Toughness Index ◽  
Strength And Toughness

This study was conducted to determine some physical and mechanical properties of high-strength flowable mortar reinforced with different percentages of palm fiber (0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.6% as volumetric fractions). The density, compressive strength, flexural strength, and toughness index were tested to determine the mechanical properties of this mortar. Test results illustrate that the inclusion of this fiber reduces the density of mortar. The use of 0.6% of palm fiber increases the compressive strength and flexural strength by about 15.1%, and 16%, respectively; besides, the toughness index (I5) of the high-strength flowable mortar has been significantly enhanced by the use of 1% and more of palm fiber.

Test Comparison Research Mechanics Performance between Sisal Fiber Concrete and Rubber Powder Concrete

2011 ◽  
Vol 243-249 ◽  
pp. 494-498
Author(s):  
Hui Ming Bao
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Sisal Fiber ◽  
Environment Friendly ◽  
Rubber Powder ◽  
Comparison Research ◽  
Mechanics Performance ◽  
Fiber Concrete ◽  
Sisal Fibers

By means of the tests on the mechanics performance of the reinforcing concrete mixed with sisal fibers or rubber powder of certain content are investigated. The compressive strength, tensile strength and flexural strength, etc. are compared. The test indicates that when the test condition is same, the compressive strength, tensile strength and flexural strength of the sisal fibers concrete are better than those of the rubber powder’s. The sisal fiber concrete is environment friendly than the rubber powder concrete. And it has widely value of spread and utilization.

scholarly journals Mechanical Properties and Microstructural Features using Stone Dust as a Partial Replacement of Sand

2019 ◽  
Vol 8 (6) ◽  
pp. 5232-5237
Keyword(s):  
Mechanical Properties ◽  
Economic Growth ◽  
Sustainable Development ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Natural Resources ◽  
Strength Test ◽  
Partial Replacement ◽  
Test Results ◽  
Stone Dust

Today’s world is always leads to development in technology as well as the economic growth though sometime these will affect the environment badly. That’s why world environmental commission coined the termed called sustainable development where development takes place without hampering the others’ needs. Concrete industry is rapidly growing industry in India which consumes lots of natural resources during the production of concrete. Here Stone dust is used as a sustainable material in place of sand partially. M25 grade of concrete has been chosen for the experiments. Different mechanical properties of concrete like compressive strength, Split tensile, flexural strength etc. and Microstructural features like SEM, EDX have been included in this study. Compressive Strength and flexural strength test results shown the increase in the strength. Sulphate Resistance Properties have been tested by curing the cubes in the MgSO4 solution and increase in weight has been observed. Similarities are found in the SEM pictures

scholarly journals Kajian Karakteristik Beton Memadat Sendiri yang Menggunakan Serat Ijuk (Hal. 54-65)

2018 ◽  
Vol 4 (4) ◽  
pp. 54
Author(s):  
Iis Nurjamilah ◽  
Abinhot Sihotang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Coarse Aggregate ◽  
Fresh Concrete ◽  
High Strength ◽  
Self Compacting Concrete ◽  
Palm Fiber ◽  
Fiber Concrete ◽  
Dilute Mixture

ABSTRAKKajian karakteristik beton memadat sendiri yang menggunakan serat ijuk merupakan sebuah kajian yang dilakukan untuk mengetahui pengaruh penambahan serat ijuk terhadap karakteristik beton memadat sendiri (SCC). Beton memadat sendiri yang menggunakan serat ijuk (PFSCC) didesain memiliki campuran yang encer, bermutu tinggi (= 40 MPa) dan memiliki persentase kekuatan lentur yang lebih baik. PFSCC  didapatkan dari hasil pencampuran antara semen sebanyak 85%, fly ash 15%, superplastizicer 1,5%, serat ijuk 0%, 0,5%; 1%; 1,5%; 2% dan 3% dari berat binder (semen + fly ash), kadar air 190 kg/m3, agregat kasar 552,47 kg/m3 dan pasir 1.063 kg/m3. Semakin banyak persentase penambahan serat ijuk ke dalam campuran berdampak terhadap menurunnya workability beton segar. Penambahan serat ijuk yang paling baik adalah sebanyak 1%, penambahan tersebut dapat meningkatkan kekuatan tekan beton sebesar 13% dan lentur sebesar 1,8%.Kata kunci: beton memadat sendiri (SCC), beton berserat, beton memadat sendiri yang menggunakan serat ijuk (PFSCC), serat ijuk ABSTRACTThe study of characteristics self compacting concrete using palm fibers is a study conducted to determine the effect of adding palm fibers to characteristics of self compacting concrete (SCC). palm fibers self compacting concrete (PFSCC) is designed to have a dilute mixture, high strength (= 40 MPa), and have better precentage flexural strength. PFSCC was obtained from mixing of 85% cement, 15% fly ash, 1.5% superplastizicer, 0%, 0.5%, 1%, 1.5%, 2% and 3% palm fibers from the weight of binder  (cement + fly ash), water content 190 kg/m3, coarse aggregate 552.47 kg/m3 and sand 1,063 kg/m3. The more persentage palm fibers content added to the mixture makes workability of fresh concrete decreases. The best addition of palm fiber is 1%, this addition can increases the compressive strength 13% and flexural strength 1.8%.Keywords: self compacting concrete (SCC), fiber concrete, Palm fiber self compacting concrete (PFSCC), palm fiber

scholarly journals Structural Performance of Translucent Concrete Façade Panels

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Awetehagn Tuaum ◽  
Stanley Shitote ◽  
Walter Oyawa ◽  
Medhanye Biedebrhan
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Bulk Density ◽  
Optical Fibers ◽  
Building Material ◽  
Energy Demand ◽  
Volume Ratio ◽  
Structural Performance ◽  
Artificial Lighting ◽  
Plastic Optical Fibers

Energy conservation is an emerging global issue for sustainable infrastructure development. The building sector energy demand accounts for approximately 34% of the world’s energy demand, and artificial lighting consumes around 19% of the total delivered electricity globally. Developing a new kind of building material that can reduce the demand for artificial lighting energy is vital. This research attempts to address such issues through the development of translucent concrete façade using locally available materials that can be used as energy-saving building material. Bulk density, compressive strength, and flexural strength of translucent concrete containing 2%, 4%, and 6% volume ratios of plastic optical fibers (POF) were studied. Moreover, the flexural toughness of translucent concrete façade panels integrating 6% volume ratio of POF was also investigated. The experimental results showed that using up to 6% volume ratio of plastic optical fibers had no adverse effect on the bulk density of translucent concrete. Translucent concrete specimens exhibited relatively lower compressive and flexural strengths compared to the reference concrete. However, it was evidently observed that the compressive strength of translucent concrete increased with increasing the volume ratio of POF. The flexural strength of translucent concrete was observed to decline with increase in the volume ratio of POF. Results demonstrated that translucent concrete panels have better flexural toughness, ductility, and energy absorption capacity than the reference concrete panel. The energy-saving, environmental conservation, and aesthetic and structural performance improvements stemming from the application of translucent concrete façade panel as architectural wall would foster the development of green and resilient buildings as well as contribute to sustainable construction.

The ability of high performance concrete to resist high temperature

2017 ◽  
Vol 8 (4) ◽  
pp. 392-401 ◽  
Author(s):  
Hassan A.M. Mhamoud ◽  
Jia Yanmin
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Mass Loss ◽  
High Performance ◽  
Elevated Temperatures ◽  
High Performance Concrete ◽  
Sharp Decrease ◽  
Test Results ◽  
Content Type ◽  
Chinese Standard

Purpose This study aims to focus on the resistance to elevated temperatures of up to 700ºC of high-performance concrete (HPC) compared to ordinary Portland concrete (OPC) with regards to mass loss and residual compressive and flexural strength. Design/methodology/approach Two mixtures were developed to test. The first mixture, OPC, was used as the control, and the second mixture was HPC. After 28 days under water (per Chinese standard), the samples were tested for compressive strength and residual strength. Findings The test results showed that at elevated temperatures of up to 500ºC, each mixture experienced mass loss. Below this temperature, the strength and the mass loss did not differ greatly. Originality/value When adding a 10 per cent silica fume, 25 per cent fly, 25 per cent slag to HPC, the compressive strength increased by 17 per cent and enhanced the residual compressive strength. A sharp decrease was observed in the residual flexural strength of HPC when compared to OPC after exposure to temperatures of 700ºC.

scholarly journals Orthogonal Analysis on Mechanical Properties of Basalt–Polypropylene Fiber Mortar

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2937
Author(s):  
Huimin Chen ◽  
Chunyan Xie ◽  
Chao Fu ◽  
Jing Liu ◽  
Xiuli Wei ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Volume Content ◽  
Fiber Length ◽  
Content Volume ◽  
Polypropylene Fiber ◽  
Basalt Fiber ◽  
Test Method ◽  
Test Results ◽  
Fiber Volume

Orthogonal test method was applied to analyze the strength properties of basalt-polypropylene mortar. The effect of basalt fiber length, polypropylene fiber length, basalt fiber volume content and polypropylene fiber volume content on the 28 d cube compressive strength and flexural strength were investigated. Test results show that comparing with flexural strength, the influence of basalt fiber length and polypropylene fiber length on compressive strength of mortar was greater than on flexural strength. The length of polypropylene fibers contributes the highest to the flexural strength. The effect of basalt fiber on mortar strength is the largest with 6 mm length and 4% content. Polypropylene fiber length has the greatest influence on the compressive strength of fiber mortar, followed by basalt fiber volume content. Volume content of polypropylene fiber has the greatest influence on flexural strength of fiber mortar, followed by polypropylene fiber length. According to the scoring of the efficacy coefficient method, the best ratio combination for compressive and flexural strength was the basalt fiber length of 9 mm, polypropylene fiber length of 6 mm, basalt fiber volume content of 4% and polypropylene fiber volume content of 4%. Compared with the blank samples, the 28 d compressive strength and 28 d flexural strength of the cement mortar samples were increased by 27.4% and 49% respectively. According to the test results, the properties of the fiber were analyzed and evaluated and the mechanism of fiber action and fiber microstructure were analyzed.

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