scholarly journals Studi Kuat Tekan Beton Speedcrete Dengan Zat Additive Naphthalene Berdasarkan Variasi Umur

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Syifa Fauziah ◽  
Anisah Anisah ◽  
Sittati Musalamah
Keyword(s):  
Compressive Strength ◽  
Test Object ◽  
Treatment Process ◽  
Concrete Strength ◽  
Test Machine ◽  
Water Age ◽  
Normal Concrete ◽  
Compressive Strength Of Concrete ◽  
Normal Strength ◽  
Additive Materials

This research aims to determine the maximum compressive strength value of concrete speedcrete using naphthalene additive additive at each test age and compare with normal concrete 28 days. This research used cylindrical test object with diameter 15 cm and height 30 cm. Speedcrete concrete does not undergo the treatment process while the normal concrete test object through the treatment process. Testing compressive strength of concrete speedcrete using Crushing Test Machine tool. In this research the compressive strength was produced by using superplasticizer type naphthalene and compared with normal concrete without using additive. The target quality plan is fc '35 MPa with the use of additive dose of 1.7% of the weight of cement. The results of this research showed an increase in the value of compressive strength of concrete speedcrete with aadditive materials added naphthalene increased with increasing age of concrete. The results showed that the compressive strength of concrete speedcrete with naphthalene additive materials of 12 hours, 18 hours, 28 hours and 48 hours was 0.5 MPa, 17,81 MPa, 31,14 MPa and 45,77 MPa. Normal strength concrete strength with the addition of 20% water age 28 days that is equal to 54.76 MPa.

scholarly journals Pengaruh Pemanfaatan Abu Tumbuhan Perumpung Terhadap Peningkatan Kuat Tekan Beton K300

Jurnal Tekno ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 11-20
Author(s):  
Ahmad Junaidi ◽  
R Dewo Hiraliyamaesa Hariyanto
Keyword(s):  
Compressive Strength ◽  
Test Object ◽  
Concrete Mixture ◽  
Wild Plant ◽  
Concrete Compressive Strength ◽  
Normal Concrete ◽  
Compressive Strength Of Concrete ◽  
Test Objects

Perumpung (Eulalia japonica) is a wild plant that usually grows on the banks of river. The locals consider this plant as a waste/pest, but the authors are interested in researching perumpung because they are similar to bamboo, sugarcane and other fibrous plants. In this study, the authors aims to compare the compressive strength of normal concrete with the compressive strength of concrete added with Perumpung ash at 28-days-old K-300. The study used a cube-shaped test object (15 x 15 x 15 cm) with 6 samples for each condition. The total number of test objects is 48, which consists of 8 conditions, namely normal conditions and 5%, 7.5%, 10%, 12.5%, 15%, 17.5% and 20% addition of perumpung ash by cement weight. The results obtained that the compressive strength of 28-days-old concrete under normal conditions was 316,060 kg/cm2 and the addition of 5% ash was 331.583 kg/cm2, 7.5% was 337.181 kg/cm2, 10% was 341.813 kg/cm2, 12 ,5% is 347,045 kg/cm2, 15% is 353,889 kg/cm2, 17.5% is 311,160 kg/cm2 and 20% is 298.44 kg/cm2. From the results above it can be concluded that the addition of 15% Perumpung Ash to the concrete mixture increases the maximum characteristic concrete compressive strength by 353.889 kg/cm2.

scholarly journals PENGARUH PENAMBAHAN SILICA FUME DAN GLENIUM SKY TERHADAP KUAT TEKAN BETON K-400

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Sudirman Kimi ◽  
Abdullah Abuzar Alghafari
Keyword(s):  
Compressive Strength ◽  
Silica Fume ◽  
Test Object ◽  
Building Construction ◽  
Raw Material ◽  
Concrete Technology ◽  
Normal Concrete ◽  
Three Stages ◽  
Compressive Strength Of Concrete

In the development of concrete technology (Concrete Technology) today which is increasingly unceasingly, along with the development of the era hence the quality of concrete selection as the main raw material of building construction is very important. This research writer take silica fume and glenium sky as added concrete mixture to know the influence of the addition of silica fume and glenium sky to the compressive strength of concrete. The research is divided into three stages : material testing, test object making and test object. This research uses cube-shaped specimen with size 15x15x15 cm, with 5 variations, they are normal concrete, silica fume 5%, silica fume 5% + glenium sky 2%, silica fume 5% + glenium sky 4%, and silica fume 5% + glenium sky 6%, which every variations has 3 test specimens with 3 days, 7 days, and 28 days. From laboratorium testing, the characteristics of compressive strength of concrete at age 28 days of normal concrete is 407,2 Kg/Cm2, normal concrete with silica fume 5% is 418,5 Kg/Cm2, normal concrete with silica fume 5% + glenium sky 2% is 435,9 Kg/Cm2, normal concrete with silica fume 5% + glenium sky 4% is 451,9 Kg/Cm2, normal concrete with silica fume 5% + glenium sky 6% is 484,1 Kg/Cm2.

scholarly journals OPTIMIZING THE USE OF ROCK ASH AS FINE AGGREGATES WITH THE ADDITION OF ADDITIVES TO THE CONCRETE MIXTURE WITH A COMPRESSIVE STRENGTH OF 350 Kg/cm2

CI-TECH ◽  
2020 ◽  
Vol 1 (01) ◽  
pp. 45-48
Author(s):  
Triaswati ◽  
Srie Subekti ◽  
Sulchan Arifin ◽  
Febri Aditya
Keyword(s):  
Compressive Strength ◽  
Test Object ◽  
Concrete Mixture ◽  
Normal Concrete ◽  
Type D ◽  
Cylinder Test ◽  
Fine Aggregates ◽  
Stone Dust ◽  
Compressive Strength Of Concrete

Stone dust nowadays is a side product of the stone crushing industry, the quality of which is quite a lot that it becomes a waste that needs to be handled. This study is intended to find out the composition of stone dust by adding some additive substance type D and type F to reach a compressive strength of 350 kg/cm2. The variation of percentage of stone dust on the composition of concrete mixture is 0%, 20%, 40%, 60%, 80%, 100%. The design of concrete mixture composition refers to the procedure of making preparation of the normal concrete mixture. SNI 03-2384-1993. The size of the cylinder test object is 15 cm in diameter and 30 cm in height. The result of this research shows that the mixture using stone dust has quite an effect on the compressive strength of concrete. From the result of the experiment, it is shown that for compressive strength of 350 kg/cm2, we can use 100% of stone dust with a resulted compressive strength of 445 kg/cm2.

Effect of Curing Regime on Compressive Strength of Concrete Containing Malaysian Laterite Aggregate

2012 ◽  
Vol 626 ◽  
pp. 839-843 ◽  
Author(s):  
Norul Wahida Kamaruzaman ◽  
Khairunisa Muthusamy
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Curing Process ◽  
Normal Concrete ◽  
Strength Performance ◽  
Compressive Strength Test ◽  
Water Curing ◽  
Compressive Strength Of Concrete ◽  
Curing Regime ◽  
Curing Age

Concrete subjected to improper curing process would exhibit poor strength performance due to incomplete hydration process. This research investigate the effect of curing regime towards compressive strength of concrete containing Malaysian laterite aggregate (MLA) as partial coarse aggregate replacement. Concrete specimens produced using a range of laterite aggregate replacement from 0 to 50% were placed in different curing regime namely water curing, natural weather curing and air curing until the testing date. Specimens were subjected to compressive strength test in accordance to BS EN 12390 at 60 days. The results show strength of all specimens except the air cured samples increase as the curing age become longer. It was found that water curing is the most suitable for better performance of laterite concrete. The presence of water throughout the curing process is very much crucial for laterite concrete strength developement compared to normal concrete.

scholarly journals INOVASI BETON RAMAH LINGKUNGAN

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Masri A Rivai ◽  
Sudirman Kimi ◽  
Revisdah Revisdah
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Normal Condition ◽  
Glass Powder ◽  
Concrete Strength ◽  
Concrete Compressive Strength ◽  
Normal Concrete ◽  
Concrete Mix ◽  
Compressive Strength Of Concrete

In this study the author take Fly Ash and Powder Glass as an added ingredient in the concrete mix. This research intend to know the effect of Fly Ash and Powder Glass on K-300 concrete compressive strenght.This study uses cube-shaped specimens with the siza of 15 x 15 x 15. The total of test specimens in this study as much as 45 sample, each 9 seal of test specimens in 5 condition that is normal, concrete + fly ash 5% + glass powder 18%, concrete + fly ash 5% + glass powder 21%, concrete + fly ash 5% + glass powder 24%, concrete + fly ash 5% + glass powder 27%.After concrete compressive strenght test, the concrete strength og the concrete at age 3, 7 and 28 days with normal condition at 3 days age aqual to 139.26 Kg/Cm2, at age 7 day equal to 202.17 Kg/Cm2 and age 28 day of 307.01 Kg/Cm2. And the value of compressive strength of concrete characteristic with the use of Fly Ash 5% + glass powder 18% has the highest value of concrete compressive strength that is at 3 days age of 151.13 Kg/Cm2, 7 day age equal to 21175 Kg/Cm2 and age 28 is 312.81 Kg/Cm2 . These result exceed the copressive strength values of normal concrete characteristic and show that fly ash and glass powder can increase the compressive of the concrete.

Variasi Penambahan Sika Cim Dan Fiber Kawat Pada Beton Mutu Fc’ 30 Mpa

2018 ◽  
Vol 9 (2) ◽  
pp. 67-73
Author(s):  
M Zainul Arifin
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Curing Temperature ◽  
Test Results ◽  
Concrete Compressive Strength ◽  
Normal Concrete ◽  
Astm Method ◽  
Additive Type ◽  
Composition Variation ◽  
Compressive Strength Of Concrete

This research was conducted to determine the value of the highest compressive strength from the ratio of normal concrete to normal concrete plus additive types of Sika Cim with a composition variation of 0.25%, 0.50%, 0.75%, 1.00%, 1.25%, 1 , 50% and 1.75% of the weight of cement besides that in this study also aims to find the highest tensile strength from the ratio of normal concrete to normal concrete in the mixture of sika cim composition at the highest compressive strength above and after that added fiber wire with a size diameter of 1 mm in length 100 mm with a ratio of 1% of material weight. The concrete mix plan was calculated using the ASTM method, the matrial composition of the normal concrete mixture as follows, 314 kg / m3 cement, 789 kg / m3 sand, 1125 kg / m3 gravel and 189 liters / m3 of water at 10 cm slump, then normal concrete added variations of the composition of sika cim 0.25%, 0.50%, 0.75%, 1.00%, 1.25%, 1.5%, 1.75% by weight of cement and fiber, the tests carried out were compressive strength of concrete and tensile strength of concrete, normal maintenance is soaked in fresh water for 28 days at 30oC. From the test results it was found that the normal concrete compressive strength at the age of 28 days was fc1 30 Mpa, the variation in the addition of the sika cim additive type mineral was achieved in composition 0.75% of the cement weight of fc1 40.2 Mpa 30C. Besides that the tensile strength test results were 28 days old with the addition of 1% fiber wire mineral to the weight of the material at a curing temperature of 30oC of 7.5%.

scholarly journals PENINGKATAN MUTU BETON DENGAN CAMPURAN LIMBAH KALSIT SEBAGAI BAHAN ALTERNATIF RAMAH LINGKUNGAN

2020 ◽  
Vol 5 (2) ◽  
pp. 77
Author(s):  
Anissa Diyah Lestari ◽  
Luky Indra Gunawan ◽  
Dyah Julia Syifa ◽  
Ronny Wahyu Wibowo ◽  
Hendramawat Aski Safarizki
Keyword(s):  
Compressive Strength ◽  
Building Materials ◽  
Economic Value ◽  
Test Material ◽  
Scientific Article ◽  
Final Report ◽  
Normal Concrete ◽  
Success Indicators ◽  
Compressive Strength Of Concrete ◽  
The Right

AbstrakPada era teknologi sekarang ini, beton adalah sebagai salah satu bahan bangunan yang paling banyak digunakan di Indonesia. Inovasi diperlukan untuk peningkatan mutu beton dalam kuat tekan beton dan harga lebih murah dibandingkan dengan beton normal. Limbah penambangan batu kapur di Wonogiri tidak dimanfaatkan dengan baik. Sehingga menimbulkan polusi udara dan mencemari lingkungan di sekitar penambangan. Maka dari itu, inovasi ini menggunakan limbah kalsit untuk ditambahkan sebagai bahan tambah pembuatan beton. Luaran yang diharapkan dalam penelitian ini adalah dapat mengetahui komposisi yang pas untuk penambahan kalsit dalam campuran pembuatan beton dan menjadikan beton dengan bahan tambah limbah kalsit sebagai beton inovatif ramah lingkungan dan memiliki nilai ekonomis. Serta draft artikel ilmiah tentang beton inovatif yang dituangkan dalam sebuah draft artikel ilmiah, laporan kemajuan dan laporan akhir. Hasil yang telah dicapai saat ini berdasarkan indikator keberhasilan jangka pendek, yaitu telah dilaksanakannya penelitian dan pembuatan beton dengan bahan tambah kalsit dengan beberapa varian, serta pengujian sampel beton setelah berumur 14 hari. Pada penelitian ini mengetahui komposisi optimum penambahan kalsit terhadap kuat tekan beton, dengan penambahan kadar kalsit sebesar 5%, 9%, dan 15% benda uji yang digunakan adalah silinder berdiameter 15 cm dengan tinggi 30 cm sebanyak 9 buah dimana pengujian dilakukan pada umur 14 hari. Hasil analisis data pengujian kuat tekan beton kalsit adanya peningkatan pada variasi 9% kalsit sebesar 20,71 MPa (4.12%) dibandingkan beton normal 19,89 MPa. Maka kesimpulannya penggunaan kalsit dapat meningkatkan kuat tekan beton.Kata Kunci: Efektivitas, Beton SCC, Kalsit, Kuat TekanAbstractConcrete is one of the most widely used building materials in Indonesia In the current technological era. Innovation is needed to improve concrete quality in concrete compressive strength and prices are cheaper than normal concrete. Waste from limestone mining in Wonogiri is not utilized properly. So that it causes air pollution and pollutes the environment around mining. Therefore, this innovation uses calcite waste to be added as an ingredient to add concrete. The expected output in this study is to be able to find out the right composition for the addition of calcite in a mixture of concrete making and to make concrete with calcite added waste as an innovative concrete that is environmentally friendly and has economic value. As well as the draft scientific article about innovative concrete as outlined in a draft scientific article, progress report and final report. The results that have been achieved at present are based on short-term success indicators, namely the research and manufacture of concrete with calcite added ingredients with several variants, as well as testing of concrete samples after being 14 days old. In this study, the optimum composition of calcite was added to the compressive strength of concrete, with the addition of calcite levels of 5%, 9%, and 15%. The test material used was a cylindrical diameter of 15 cm with a height of 9 cm in which testing was done at 14 days . The results of the analysis of the test data for compressive strength of calcite concrete was an increase in the variation of 9% of calcite by 20.71 MPa (4.12%) coMPared to normal concrete of 19.89 MPa. So the conclusion is the use of calcite can increase the concrete compressive strength.Keywords: Effectiveness, SCC Concrete, Calcite, Compressive Strength

On Effects of Fly Ash as a Partial Replacement of Cement on Concrete Strength

2012 ◽  
Vol 204-208 ◽  
pp. 3970-3973
Author(s):  
Reagan J. Case ◽  
Kai Duan ◽  
Thuraichamy G. Suntharavadivel
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Concrete Strength ◽  
Cementitious Materials ◽  
Partial Replacement ◽  
Replacement Ratio ◽  
Interface Reactions ◽  
Compressive Strength Of Concrete ◽  
Interface Bonding Strength ◽  
Large Research

As a part of a large research program aiming at the cementitious materials containing recycled materials at Central Queensland University – Australia, the current paper presents the preliminary results of a study on the effects of fly ash, which is used to replace cement in concrete, on the concrete compressive strength. For this purpose, systematic experiments have been carried out to investigate the influences of fly ash ratio and age. The compressive strength of concrete specimens with replacement ratios of 15%, 30% and 45%, and aged 7 and 28 days are measured and are compared with those of the concrete specimens without fly ash at the same ages. The results demonstrate that the strength of fly ash containing concrete improves more slowly but more strongly with aging, than their fly ash free counterparts, and an optimum fly ash replacement ratio exists where the maximum compressive strength of fly ash containing concrete can be achieved, and the maximum strength for the specimens aged 28 days and above is higher that of fly ash free concrete. Furthermore, the observation strength behaviours are analysed and discussed in terms of the influences of fly ash on interface reactions and interface bonding strength.

scholarly journals Effect of basalt aggregates and plasticizer on the compressive strength of concrete

2015 ◽  
Vol 4 (4) ◽  
pp. 520 ◽  
Author(s):  
Mohammad Al-Rawashdeh ◽  
Ashraf Shaqadan
Keyword(s):  
Compressive Strength ◽  
Laboratory Investigation ◽  
Concrete Strength ◽  
Experimental Program ◽  
Sieve Analysis ◽  
Curing Time ◽  
Compressive Test ◽  
Slump Test ◽  
Compressive Strength Of Concrete

The purpose of this research is to investigate the feasibility of using basalt aggregates and plasticizers in concrete mixes. An elaborate experimental program that included a variation of plasticizer and basalt in concrete mixes. The laboratory investigation included measurements of sieve analysis, compressive strength, and slump test. The compressive test was evaluated at 7, 14, 28 days of curing time. The results show significant improvement in concrete strength up to 2% of additive plasticizer after that concrete strength was reduced.

scholarly journals Estimation of In-situ concrete strength using drilling resistance

2019 ◽  
Vol 289 ◽  
pp. 06001
Author(s):  
Serkan Karatosun ◽  
Muhammet Asan ◽  
Oguz Gunes
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Condition Assessment ◽  
Assessment Practice ◽  
Destructive Testing ◽  
Seismic Safety ◽  
Concrete Mixtures ◽  
Priority Task ◽  
Compressive Strength Of Concrete ◽  
Drilling Resistance

Rapid and reliable condition assessment of reinforced concrete structures in high seismicity regions is a priority task in estimating their seismic safety. Non-destructive testing (NDT) methods may contribute to the condition assessment practice by providing fast and reliable strength estimation while causing minimal or no damage to the structure. Drilling resistance is an NDT method that has been used for mechanical characterization of natural stone and wood by measuring the force response for constant penetration rate and rotational speed. This paper focuses on the relationship between drilling resistance and compressive strength of concrete, including when it is combined with other NDT methods. Concrete cube samples produced using 6 different concrete mixtures were tested. Correlation equations were then obtained using statistical analysis. The results reveal that it may be possible to reliably estimate the compressive strength of concrete using drilling resistance method.

Sign in / Sign up

Export Citation Format

Share Document