scholarly journals PENGGUNAAN PASIR LAHAR DINGIN DI KALI PUTIH SEBAGAI AGREGAT HALUS BETON

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Fatkhurrohim Fatkhurrohim ◽  
Ahmad Mashadi ◽  
Muhammad Amin ◽  
Dwi Sat Agus Yuwana
Keyword(s):  
Compressive Strength ◽  
Volume Ratio ◽  
Unit Weight ◽  
Sieve Analysis ◽  
Fine Aggregate ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength ◽  
Sand Material ◽  
Test Result

<p align="center">ABSTRACT</p><p>After the eruption of Mount Merapi, which occurred on October 26th 2010 produced an abundance of cold lava sand. The researcher attempted to conduct test of cold lava sand as fine aggregate concrete. This study aims to compare the compressive strength of concrete by using a cold lava sand taken from the Kali Putih, Salam, Magelang and sand are not affected by cold lava taken from Kali Blondo located in the Blondo, Magelang. The method of this study include: testing of materials, manufacturing of test specimens and test concrete performance after 7, 14, 21 days and 28 days. From the test result of concrete compressive strength we can know strength combaine ineach mixtureby weight volume ratio 1pc: 2 ps; 3kr with 0,6 water cement ratio. Based on the results of testing the quality of the sand material taken from the Kali Putih, Salam, Magelang to the mud content, unit weight, specific gravity, water absorption,and sieve analysis PUBI 1982 qualifies mixed concrete.The result of comparative testing of the quality of the sand material taken from kali blondo to sieve analysis are not eligible PUBI 1982. The results showed that the compressive strength of concrete on average, the highest shown in the concrete that uses cod lava sand derived from the down stream of Kali Putih, the average compressive strength of 279,51 kg/cm2, with the weight of the specimen by an average of 11, 5 kg.</p>

scholarly journals THE EFFECT OF ADDING CEMENT WASTE ON THE QUALITY OF CONCRETE COMPRESSIVE

Jurnal CIVILA ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 213
Author(s):  
Asrul Majid ◽  
Hammam Rofiqi Agustapraja
Keyword(s):  
Compressive Strength ◽  
Strength Test ◽  
Fine Aggregate ◽  
Infrastructure Development ◽  
Test Results ◽  
Compressive Strength Test ◽  
Compressive Strength Of Concrete ◽  
Concrete Materials ◽  
Test Objects

Infrastructure development is one of the important aspects of the progress of a country where most of the constituents of infrastructure are concrete. The most important constituent of concrete is cement because its function is to bind other concrete materials so that it can form a hard mass. The large number of developments using cement as a building material will leave quite a lot of cement bags.In this study, the authors conducted research on the effect of adding cement waste to the compressive strength of concrete. This study used an experimental method with a total of 24 test objects. The test object is in the form of a concrete cylinder with a diameter of 15 cm and a height of 30 cm and uses variations in the composition of the addition of cement waste cement as a substitute for fine aggregate, namely 0%, 2%, 4% and 6%. K200). The compressive strength test was carried out at the age of 7 days and 28 days.The test results show that the use of waste as a partial substitute for fine aggregate results in a decrease in the compressive strength of each mixture. at the age of 7 days the variation of 2% is 16.84 MPa, 4% is 11.32 MPa and for a mixture of 6% is 6.68 MPa. Meanwhile, the compressive strength test value of 28 days old concrete in each mixture decreased by ± 6 MPa. So the conclusion is cement cement waste cannot be used as a substitute for fine aggregate in fc 16.6 (K200) quality concrete because the value is lower than the specified minimum of 16.6 MPa.

scholarly journals PENGARUH CAMPURAN ABU SEKAM PADI DAN ABU ARANG TEMPURUNG SEBAGAI PENGGANTI SEBAGIAN AGREGAT HALUS TERHADAP KUAT TEKAN BETON

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Agung Prayogi
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Fine Aggregate ◽  
Concrete Compressive Strength ◽  
Fine Aggregates ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength ◽  
By Products

Abstract Concrete is the most widely used material throughout the world and innovations continue to be carried out to produce efficient development. Shell charcoal ash and rice husk ash are industrial by-products which have the potential to replace sand for concrete mix, especially in Indragiri Hilir. The research with the title "Effect of Mixture of Rice Husk Ash and Shell Ash Ashes as Substitute for Some Fine Aggregates Against Concrete Compressive Strength" aims to prove the effect of a mixture of shell charcoal ash and husk ash to replace some of the sand to produce maximum compressive strength. Concrete is a mixture of Portland cement, fine aggregate, coarse aggregate, and water. This research uses 5 variations of the mixture to the weight of sand, BSA 0 without a substitute mixture, BSA 1 with a mixture of 5% husk ash and 10% shell charcoal, BSA 2 with a mixture of 5% husk ash and 15% charcoal ash, BSA 3 with a mixture of 5% husk ash and 18% charcoal, BSA 4 with a mixture of 10% husk and 10% charcoal, and BSA 5 with a mixture of 13% husk ash and 10% charcoal ash. SNI method is used for the Job Mix Formula (JMF) mixture in this research. The results of the average compressive strength of concrete at 28 days for JMF of 21.05 MPa, BSA 1 of 23.68 MPa, BSA 2 of 22.23 MPa, BSA 3 of 14.39 MPa, BSA 4 of 13.34 MPa , and BSA 5 of 20.14 MPa. The conclusion drawn from the results of the BSA 1 research with a mixture of 5% husk ash and 15% charcoal ash produced the highest average compressive strength of 23.68 MPa. Abstrak Beton merupakan material paling banyak digunakan diseluruh dunia dan terus dilakukan inovasi untuk menghasilkan pembangunan yang efisien. Abu arang tempurung dan abu sekam padi merupakan hasil sampingan industri yang berpotensi sebagai pengganti pasir untuk campuran beton, khususnya di Indragiri Hilir. Penelitian dengan judul “Pengaruh Campuran Abu Sekam Padi dan Abu Arang Tempurung Sebagai Pengganti Sebagian Agregat Halus Terhadap Kuat Tekan Beton” ini bertujuan membuktikan adanya pengaruh campuran abu arang tempurung dan abu sekam untuk mengganti sebagian pasir hingga menghasilkan kuat tekan maksimum. Beton adalah campuran antara semen portland, agregat halus, agregat kasar, dan air. Penelitian ini menggunakan 5 variasi campuran terhadap berat pasir, BSA 0 tanpa campuran pengganti, BSA 1 dengan campuran 5 % abu sekam dan 10% arang tempurung, BSA 2 dengan campuran 5% abu sekam dan 15% abu arang, BSA 3 dengan campuran 5% abu sekam dan 18% arang, BSA 4 dengan campuran 10% sekam dan 10% arang, dan BSA 5 dengan campuran 13% abu sekam dan 10% abu arang. Metode SNI digunakan untuk campuran Job Mix Formula (JMF)  pada penelitian ini. Hasil rata-rata kuat tekan beton pada umur 28 hari untuk JMF sebesar 21,05 MPa, BSA 1 sebesar 23,68 MPa, BSA 2 sebesar 22,23 MPa, BSA 3 sebesar 14,39 MPa, BSA 4 sebesar 13,34 MPa, dan BSA 5 Sebesar 20,14 MPa. Ditarik kesimpulan dari hasil penelitian BSA 1 dengan campuran 5% abu sekam dan 15% abu arang menghasilkan rata-rata kuat tekan tertinggi yaitu sebesar 23,68 MPa.  

scholarly journals Analysis Of Use Sea Sand as A Fine Aggregate Replacement To Strong Press Concrete

2021 ◽  
Vol 1 (3) ◽  
pp. 1-6
Author(s):  
Fachrul Arya Sanjaya ◽  
Sapto Budy Wasono ◽  
Diah Ayu Restuti Wulandari
Keyword(s):  
Compressive Strength ◽  
Building Material ◽  
Fine Aggregate ◽  
River Sand ◽  
Concrete Material ◽  
Sea Sand ◽  
Concrete Cylinders ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength

Concrete is a composite building material made from a combination of aggregate and cement. The limitation of concrete material, in this case, is a fine aggregate (river sand). The utilization of sea sand as an alternative to fine aggregate in the manufacture of concrete is     motivated by the availability of sea sand in nature in very large quantities. This study aims to determine the comparison and how much the compressive strength of concrete produced when using sea sand. The test was carried out when the specimens were 7, 14, and 28 days old with the specimens used in this study were concrete cylinders with a diameter of 15 cm and a height of 30 cm. The results showed that the use of sea sand as a substitute for fine aggregate showed an average compressive strength in 7 days of 18.86 MPa, an average compressive strength of 14 days of 25.52 MPa, an average compressive strength of 28 days of 29.00 MPa. Then for the average compressive strength value of the use of river sand in 7 days is 17.17 MPa, the average compressive strength of 14 days is 23.24 MPa, the average compressive strength of 28 days is 26.41 MPa.

scholarly journals PENGGUNAAN PASIR LAUT TERHADAP KUAT TEKAN BETON KOTA BENGKULU

2018 ◽  
Vol 6 (2) ◽  
pp. 106-113
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Fresh Water ◽  
Salt Water ◽  
Sieve Analysis ◽  
River Sand ◽  
Fine Grain ◽  
Sea Sand ◽  
Compressive Strength Of Concrete

This research was motivated by the use of sea sand to the availability of large amounts in Bengkulu city. The purpose of this study was to determine the quality of sea sand physically and to compare the compressive strength of concrete with the dunes and river sand. Sea Sand which were used in this study wereSelolongSea Sand, LakokSea Sand and Air Padang Sea Sand. The specimens were the cubical size 15 cm x 15 cm x15 cm of 40 samples with 2 types of treatment namely salt water and fresh water treatment. The planning of concrete used 0,5fasand 60-100 mmslump, The testing was done at 28 days. The result of this study showed that for doing the inspection of sand quality physically, all the tests fulfilled the requirement setexcept in the inception of sieve analysis for Air Padang sea sand, which has a very fine grain. The highestincreased of concrete compressive strength was atLakok Sea Sand, which was 3.86% of the dunes, and 4.77% for the treatment of river sand for freshwater. For the treatment of Lakoksalt water on the dunes increased to 2.22% and on the river sand increased 3.74%. Air Padang Sea Sand has the biggest reduction the compressive strength of concrete, most notably in the treatment of fresh water on the dunes of 10.33% and 9.54% of the river sand. For salt water treatment, Air Padang Sea Sand had a greater reduction which was 14.61% of the dunes and 13, 33% of the river sand.

scholarly journals Pengaruh Cangkang Kerang Laut Terhadap Kuat Tekan Beton

2021 ◽  
Vol 2 (1) ◽  
pp. 46-54
Author(s):  
Neti Rahmawati ◽  
Irwan Lakawa ◽  
Sulaiman Sulaiman
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Building Materials ◽  
Coarse Aggregate ◽  
Fine Aggregate ◽  
Fine Aggregates ◽  
Concrete Quality ◽  
Compressive Strength Of Concrete ◽  
Physical Construction

Concrete is one of the most widely used building materials today interms of physical construction. Concrete is made from a mixture offine, coarse aggregate, cement, and water with a certain ratio, aswell as materials that are usually added to the concrete mixtureduring or during mixing, to changing the properties of concrete tomake it more suitable in certain jobs and more economical, can alsobe added with certain other mixed materials as needed if deemednecessary. Seashells can be used to mix concrete. This study aims todetermine whether the addition of shells aggregate shells in aconcrete mixture can affect the mechanical properties of concrete.The specimens used are in the form of cubes with a size of 15cm x 15cm x 15 cm, consisting of additional concrete coarse and fineaggregate with shell substitution percentage of 0%, 15%, 20% with atotal sample of 45, with the planned concrete quality of K225. Theuse of sea shells in increasing the compressive strength of concrete isbetter used as fine aggregate than coarse aggregate. The use of seashells as a substitute for fine aggregates achieves maximum resultsat 20% composition.

scholarly journals Ekosemen Sebagai Media Perekat Pengganti Semen Untuk Beton

2018 ◽  
Vol 2 (1) ◽  
pp. 44
Author(s):  
Marhadi Sastra ◽  
Juli Ardita Pribadi R
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Economic Value ◽  
Volume Ratio ◽  
Concrete Quality ◽  
Concrete Testing ◽  
Inorganic Waste ◽  
Strength Difference ◽  
Test Result

Waste is a serious problem faced at this time. A lot of pollution and diseases caused by waste, therefore many efforts are made so that waste can be utilized even contain economic value. One of the utilization of waste is as an eco-cement used as a substitute for cement. This study used the concrete quality of the plan fc '= 10 MPa and fc' = 20 MPa, the making of concrete utilized waste ash in lieu of cement in predetermined quantities, waste ash obtained from organic waste and inorganic waste that was burned to ash and then filtered using 100 and 200 sieves. Variations of ash addition of 0%, 10%, 20%, 30%, 40% and 50% of the volume ratio. Age of concrete testing was 7, 14 and 28 days. The results obtained from the test indicate that the material used met a predetermined standard, with the variation of the concrete weight mixture of concrete unchanged. From the concrete strength test result for fc '= 10 MPa, the best concrete mixed variation is 20% with compressive strength equal to 12,76 MPa at 28 day age, fc = 20 MPa concrete quality with best mix variation 20% has compressive strength of 17.29 MPa, the largest compressive strength value compared with the compressive strength of concrete containing ash, the compressive strength difference of 13.8% lower than the normal compressive strength of the concrete, while the effect of each mixture variation on the age of concrete is linear;  with the increase of the age, the compressive strength tends to increase.

The Influence of Compressive Strength of EPS Concrete Using Fiberglass with Curing and Non Curing Treatment

2015 ◽  
Vol 747 ◽  
pp. 226-229
Author(s):  
Irpan Hidayat ◽  
Jemima Devina Halim
Keyword(s):  
Compressive Strength ◽  
Hydration Reaction ◽  
Fine Aggregate ◽  
Concrete Experience ◽  
Alternative Materials ◽  
Concrete Mix ◽  
Compressive Strength Of Concrete ◽  
Materials Used ◽  
Fiberglass Material

Concrete is a mixture of portland cement, fine aggregate, coarse aggregate and water, with or without additives which form a solid mass. The purpose of this study was to find and innovative method of producing concrete mix from solid waste material as alternative. The alternative materials used in concrete mix was fiberglass. Material reduction in the sand on the concrete can decreases the strength until the fiberglass material added and increase the compressive strength on concrete. The composition of fiberglass that used in this study was 0%, 0.5%, 1%, 1.5%, 2%, 2.5%. The methodology used is the design of concrete mix in according to SNI 03-2834-2000. The results are concrete with the addition of EPS can reduce the density and the compressive strength of normal concrete, concrete EPS was added to increase the value of compressive strength fiberglass. The addition of fiberglass in concrete EPS only on the variable of 0.5% - 1% fiberglass, if greater than 1%, the compressive strength of concrete decreased because the material has not homogeneous concrete during mixing. The largest density value of 10% EPS concrete with fiberglass on the concrete test 28 days is the concrete EPS 10% + 0.5% fiberglass by weight of the curing process and the type of 2127.73 MPa and compressive strength are the largest and EPS concrete with compressive strength amounted to 11.277 MPa. The addition of 10% EPS can reduce the compressive strength of concrete at 3.75%. The addition of fiberglass obtained with a percentage of 0.5% - 1% is the most effective additions so as to improve the quality of concrete by 0.74%. Concrete with compressive strength has a curing system which is much better than the non-curing concrete, because concrete experience of concrete hydration reaction process which takes place optimally.

scholarly journals Quality Assessment of Sandcrete Blocks Produced Along-Oke Fomo Area, Ilorin, Kwara State

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
A. O Yiosese
Keyword(s):  
Compressive Strength ◽  
Quality Assessment ◽  
Formal Training ◽  
Sieve Analysis ◽  
Fine Aggregate ◽  
Load Bearing ◽  
The Public ◽  
Developing Area

In this study, the quality of sandcrete blocks produced along Oke-fomo, a rapidly developing area of Ilorin, Kwara State, Nigeria was investigated. Seven commercial block industries were randomly selected from where five sandcrete block samples of 450 x 225 x 225mm were sourced. Fine aggregate samples were also obtained from each of these industries and transported to the materials laboratory of Ministry of works, Ilorin. The tests carried out include sieve analysis and compressive strength. The dimension of the blocks was also checked. The mix ratio, curing techniques/duration and batching method were obtained through interaction with the block manufacturers. The results obtained showed that the aggregates are suitable for block making having satisfied the overall grading requirement specified in BS EN 12620 (2002). The mix ratio adopted by the industries ranges from 1:12 to 1:14 which is against the standard 1:6 specified in NIS 87:2004. The compressive strength of the sandcrete blocks was found to be below the Nigerian Industrial Standard (NIS) 87:2004 specification with an overall highest compressive strength of 0.98N/mm2 when compared with the NIS 2.5 and 3.5N/mm2 for non-load and load bearing walls respectively. The study concluded that block producer should adhere strictly to the laid down standard especially in mix ratio and curing duration. However, it was recommended that formal training should be periodically organized for block industries and the public should also be sensitized about the danger in using substandard sandcrete blocks. This will to a large extent improve the production of quality sandcrete blocks and promote the market for the standardized ones while averting consequences associated with weak sandcrete blocks such as collapse of walls.

scholarly journals Experimental Study of the Use of Pumice Sand in the Rigid Pavement

2019 ◽  
Vol 2 (1) ◽  
pp. 61-66
Author(s):  
Abdul Gaus ◽  
Imran Imran ◽  
Chairul Anwar ◽  
Liska Novianti
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Volcanic Glass ◽  
Fine Aggregate ◽  
Concrete Compressive Strength ◽  
Rigid Pavement ◽  
Concrete Mix ◽  
Pumice Sand ◽  
Compressive Strength Of Concrete

The Pumice sand is a bright colored butian type, containing foam made from glass-walled bubbles and usually referred to as silicate volcanic glass granules. This pumice sand can be used as a substitute for normal sand as fine aggregate in a mixture of concrete mix. Based on the characteristic test examination, it can be seen that in testing the characteristics of pumice sand to the specifications of normal sand in specific gravity testing and weight testing of quicksand obtained results that are smaller than the specifications of normal sand and absorption tests obtained results greater than specifications on normal sand. The results of the normal sand compressive strength at BN is 250.95 kg /cm2 while the results of the floating sand concrete compressive strength on BPA is 224, 965 kg /cm2. Based on the research it can be concluded that with the same quality of concrete, the quality of K-250 is different in comparison to the compressive strength of concrete in normal sand and pumice sand concrete shows almost the same results. Therefore, more in-depth research is needed regarding the use of pumice sand instead of normal sand in a mixture of concrete mix

scholarly journals PENGARUH PENAMBAHAN BATU KARANG SEBAGAI SUBSTITUSI AGREGAT HALUS DALAMPEMBUATAN PAVING BLOCK

UKaRsT ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 35
Author(s):  
Edy Gardjito ◽  
Agata Iwan Candra ◽  
Yosef Cahyo
Keyword(s):  
Compressive Strength ◽  
Fine Aggregate ◽  
Trial And Error ◽  
Average Value ◽  
Concrete Mixer ◽  
Trial And Error Method ◽  
Main Component ◽  
Test Result ◽  
Error Method

                                                              AbstractMaterial exploitation, especially the use of sand as the main component of concrete, needs to be reduced. The purpose of this research is to find out the value of compressive strength from the addition of rocks to achieve compressive strength according to the standard mix design of paving blocks. This research was conducted at the University's Civil Engineering Laboratory. Attending a trial and error method, the samples tested were cube with a size of 15 x 15 x 15 cm with 3 pieces with the quality of paving planned and K-225 or 18.675 MPa. The method of making specimens includes semi-mechanics using a concrete mixer. Fractional waste The rock is crushed into small pieces and then put in messin abrassion to get smaller pieces of rock and become grains of sand. Test result obtained a percentage of 25% indicating a compressive strength of 22.1 MPa, 20.3 MPa, 19.9MPa, and has an average value of 21.8 MPa. Then the results from the substitutionexperience i increase against compressive strength. Keywords: Coral, Fine Aggregate, Compressive Strength

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