Experimental Investication of Concrete on Partial Replacement of Cement by Cockle Shell

Author(s):  
Poovizhiselvi M ◽  
Rajesh R ◽  
Muthuraman S

In developing countries where concrete is widely used, the high and steadily increasing cost of concrete has made construction very expensive. The concepts of eco-friendly building are getting more attention today. The use of materials from natural sources is an alternative to the realization of the green building concept. The cement is partially replacement with 10 %, 20%, and 30% by cockle shell powder by using M20 grade concrete. The water cement ratio is maintained for this mix design is 0.5. The workability, compressive strength & tensile strength test of concrete with various percentage of cockle shell, as fine aggregate replacement are done workability, compressive and tensile strength test were conducted in accordance to IS 456.

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Sarito Sarito ◽  
Muhtarom Riyadi ◽  
Handi Sudardja

ABSTRACTMechanic characteristics of hard mortar are: compressive strength, flexural strength, tensile strength, and adhesion power. In the meantime, at Building Material Laboratory of Civil Engineering, State Polytechnic of Jakarta, test of tensile strength and adhesion power of mortar cannot be conducted because of the absence of the test equipment.This research aims to provide electric motor-powered equipment for tensile strength test of mortar in order to complete the equipment at Building Material Laboratory of Civil Engineering, State Polytechnic of Jakarta. The particular aim of the research is to make prototype of mortar tensile strength test equipment.In this research a prototype of motor-powered mortar tensile strength test equipment and the specimens, to test the performance of the equipment, were prepared. By examining the obstacles and shortcomings, this equipment is a development of the previous research by Muhtarom Riyadi and the team, 2015. The specimens, as the sample to test the equipment, were prepared by the ratio of one part of cement and three part of fine aggregate, with the total number of the specimens of 50 pieces.By analyzing the result of observation in trial period, the equipment could function as it should be. The magnitude of maximum tensile strength that causes the mortar specimens to break depends on the quality, age, and tensile area of mortar, which magnitude can be observed in manometer or scale with the unit of kilogram.Keywords: equipment, tensile, mortar, electric motorABSTRAKSifat mekanis mortar keras antara lain kuat tekan, kuat lentur, kuat tarik dan daya lekat. Sementara ini di Laboratorium bahan bangunan Jurusan Teknik Sipil Politeknik Negeri Jakarta untuk uji kuat tarik dan daya lekat mortar belum bisa dilaksanakan karena belum adanya peralatan untuk melakukan pengujian.Penelitian ini bertujuan untuk membuat alat uji tarik mortar menggunakan tenaga penggerak motor listrik guna melengkapi peralatan yang diperlukan di Laboratorium bahan bangunan Jurusan Teknik Sipil Politeknik Negeri Jakarta. Target khusus yang ingin dicapai adalah membuat prototype alat uji tarik mortar.Dalam penelitian ini akan dibuat prototipe alat uji tarik mortar menggunakan tenaga motor listrik dan cetakan benda ujinya, sekaligus untuk menguji kinerjanya. Alat ini merupakan pengembangan oleh peneliti yang terdahulu Muhtarom Riyadi dan anggotanya, 2015), dengan mencermati kendala dan kekurangannya maka penelitian ini merupakan penyempurnaan penelitian sebelumnya Sebagai sampelnya dibuat benda uji tarik mortar dengan perbandingan 1 bagian semen berbanding 3 bagian pasir, sedangkan jumlah benda uji dibuat sebanyak 50 buah.Hasil pengamatan selama uji coba maka alat alat uji tarik mortar menggunakan tenaga penggerak motor listrik dapat berfungsi sebagaimana mestinya. Besarnya gaya tarik maksimum yang menjadikan benda uji tarik mortar putus tergantung dari mutu mortar, umur serta luas penampang tarik yang nilainya dapat diamatai pada manometer atau timbangan berat dengan satuan kilogramKata kunci : Alat, uji, tarik, mortar, motor listrik


Author(s):  
S. B. Kandekar ◽  
◽  
S. K. Wakchaure ◽  

Materials are the most important component of building construction. The demands of construction material are increasing day by day significantly. This demand is increasing the material prices and scarcity of material in construction industry. To achieve economical and eco-friendly criteria naturally occurring material is selected. Clay is a natural material and it can be available easily. This paper interprets the experimental investigation on strength of concrete using clay as a partial replacement to binder content (cement) in concrete. The replacement percentages are grouped as 0%, 10%, 20%, 30%, 40% of clay and 5% of hydrated lime with cement in each series in M25 grade of concrete. To achieve the pozzolanic property of clay hydrated lime was added. Different tests are performed to determine the optimum percentage of clay as a replacement for binder content (cement) in concrete. The Compressive strength test, split tensile strength test and flexural strength test were performed on the specimens. Total 90 cubes of size 150 mm were prepared for compressive strength test, 30 cylinders of 150 mm diameter and 300 mm height were prepared for split tensile strength test and 30 beams of size 150 mm x 150 mm x 1000 mm were prepared to carry out the flexural strength test. The results are compared to find the ideal proportion of clay as a replacement for cement. It is found that 10% replacement with 5% hydrated lime gives satisfactory results.


2019 ◽  
Vol 11 (1) ◽  
pp. 1-6
Author(s):  
Faizal Hadi ◽  
Agustin Gunawan

Concrete is a material that have the strength to compression, but it is weak against tensile strength. The weakness of the tensile strength of concrete can be minimized by adding pandanus tectorius fiber. This study was aimed to determine the effect of adding pandanus tectorius fiber to split- tensile strength of concrete and percentage of the fiber in concrete that shows the highest split- tensile strength. The specimens used in this study is cylindrical with dimensions of 30 cm in height and 15 cm in diameter (SNI 03-4810-1998). Total of specimens is 32 that consist of 8 normal concretes and 24 variation concretes. An addition of pandanus tectorius fiber with the variation of 0,25%, 0,5%, and 0,75% was based on volume of the specimen. The mix design of concrete used water-cement ratio of 0.5 and slump of 60-100 mm. The splittensile strength of concrete was tested at 7 days and 14 days of dryng after immersing for 27 days. The result of split-tensile strength test of concrete with a variation of pandanus tectorius fiber showed a decreasing. The decreasing of split-tensile strength of concrete at 41 days was smaller than at 34 days to normal concrete. The highest decreasing percentage of split-tensile strength of variation concrete to normal concrete was respectively 9,249% (variation 0,25 tested at 41 days) and 14,518% (variation 0,75% tested at 34 days) .


Author(s):  
M. Sriram

Abstract: Sand is the major material used in construction all over the world. Nowadays sand is highly demand for the construction. The main purpose of this project is to investigate the effect of bottom ash in concrete and hence improving the strength and durability of concrete. So the objectives of this study were to investigate the effect of use of coal bottom ash & msand as partial replacement of fine aggregates. Percentages {M-Sand (50%), bottom ash (5%, 10% , 15% , 20%) , silica fume(2% were added) for 25% of bottom ash}. on concrete properties such as compressive strength, splitting tensile strength test. The results of specimens with and without bottom ash, Manufacturing sand, silica fume were compared. The strength of concrete was increased upto 15% replacement of bottom ash instead of fine aggregate and the 25% replacement of bottom ash with 2% of silica fume increased the strength of concrete. Keywords: Bottom ash, silica fume, manufacturing sand


2021 ◽  
Vol 14 (2) ◽  
pp. 30
Author(s):  
Armin Naibaho ◽  
Agus Sugiarto ◽  
Purnama Dewi

Abstract The use of the mountain seal used as a building block for concrete should be considered, based on current usage apart from being a light construction material for housing, mountain materials from these two places are used as the main aggregate material for building construction, water structures (dams), roads. and bridges located in the surrounding Malang-Kota Batu area To determine the size of the aggregate, the coarse aggregate is sieved using a vibrating sieve, while the fine aggregate is sieved by a hydraulic sieve. In the screening process, about 70% of the filtered must pass so that high efficiency and capacity can be achieved. The compressive strength test results obtained the average compressive strength value at 28 days of concrete for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Batu City area is equivalent to 35.65 MPa. The results of the split tensile strength test showed that the average split strength value at the age of 28 days for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Kota Batu area is equivalent to 2.51 MPa. The compressive strength value for normal concrete is 35.65 MPa, it should produce split tensile strength = 4.179 MPa according to the provisions of SNI T-15-1991-03 Article 3.2.5 (fr = 0.70√fc '). Even though the split tensile strength value obtained in the laboratory is only 2.51 MPa, this means that the quality of materials (sand and broken stone) from Batu City is not suitable for use as building materials. Because the number 2.51 MPa is relatively much smaller than the value of 4.179 MPa, it is only one of the factors outlined in the SNI T-15-1991-03 article 3.2.5. Keywords: Mountain Material, Concrete, Concrete Compressive Strength Test, Concrete Tensile Strength Test


2020 ◽  
Vol 14 (2) ◽  
pp. 30
Author(s):  
Armin Naibaho ◽  
Agus Sugiarto ◽  
Purnama Dewi

Abstract The use of the mountain seal used as a building block for concrete should be considered, based on current usage apart from being a light construction material for housing, mountain materials from these two places are used as the main aggregate material for building construction, water structures (dams), roads. and bridges located in the surrounding Malang-Kota Batu area To determine the size of the aggregate, the coarse aggregate is sieved using a vibrating sieve, while the fine aggregate is sieved by a hydraulic sieve. In the screening process, about 70% of the filtered must pass so that high efficiency and capacity can be achieved. The compressive strength test results obtained the average compressive strength value at 28 days of concrete for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Batu City area is equivalent to 35.65 MPa. The results of the split tensile strength test showed that the average split strength value at the age of 28 days for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Kota Batu area is equivalent to 2.51 MPa. The compressive strength value for normal concrete is 35.65 MPa, it should produce split tensile strength = 4.179 MPa according to the provisions of SNI T-15-1991-03 Article 3.2.5 (fr = 0.70√fc '). Even though the split tensile strength value obtained in the laboratory is only 2.51 MPa, this means that the quality of materials (sand and broken stone) from Batu City is not suitable for use as building materials. Because the number 2.51 MPa is relatively much smaller than the value of 4.179 MPa, it is only one of the factors outlined in the SNI T-15-1991-03 article 3.2.5. Keywords: Mountain Material, Concrete, Concrete Compressive Strength Test, Concrete Tensile Strength Test


2021 ◽  
Vol 2 (2) ◽  
pp. 2474-2489
Author(s):  
Thyago Lima Souza ◽  
Adriano Lopes Gualberto Filho ◽  
Deividy Kaik de Lima Araujo ◽  
Marcos André Lira Silva ◽  
Marco Antônio Assis De Oliveira ◽  
...  

The study of the use of kaolin waste has scientific and socio-environmental value by providing an appropriate destination, reducing the demand and consequent problems arising from its extraction, considering that the construction industry is a consumer of a significant amount of raw material. Thus, the study aims to replace the fine aggregate by kaolin waste in the proportions of 10%, 20% and 30%, verifying its feasibility for interlocking sidewalk pieces. The kaolin waste was used with and without fine material, and physical characterization tests of the materials were performed, and then the concrete pieces were subjected to tests of resistance to simple compression, water absorption and resistance to abrasion, as prescribed by ABNT NBR 9781:2013, and flexural tensile strength test, according to ABNT NBR 12142:2010. According to the results and analyzing the compressive strength at 28 days, the mixtures with replacement of 10% of fine aggregate by kaolin waste reached strengths greater than 35 MPa, an acceptable normative parameter, both for the waste with fines and without fines, making its use feasible.


2020 ◽  
Vol 4 (2) ◽  
pp. 284-289
Author(s):  
Dr.Muhammad Magana Aliyu Aliyu ◽  
Nuruddeen Muhammad Musa

The use of eggshells ash for partial cement replacement in concrete has been well established in earlier studies. The effect of such partial replacement of cement with an eggshell ash and Plastiment BV-40 was investigated in this. Tests including slump test, compressive strength test, splitting tensile strength test and concrete density test were carried out on concrete in which cement was partially replaced with 0%, 5%, 10%, 15%, 20%, and 25% eggshell ash and presented. The test results indicate that eggshell ash decreases the workability of concrete. Also, for the compressive strength at 5% content, after which there is  decrease in the compressive strength with increase in the ash content. Furthermore, eggshell ash is found to increase the concrete splitting tensile strength. It was concluded that eggshell ash has the potential of being utilized in concrete as partial replacement of cement.


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