scholarly journals STUDI EKSPERIMEN PENGARUH PEMANFAATAN SUPERPLASTICIZER TERHADAP KUAT TEKAN DAN PERMEABILITAS BETON BERPORI (PERVIOUS CONCRETE)

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Romario W. Pandei ◽  
Steve W. M. Supit ◽  
Jemmy Rangan ◽  
Arthur Karwur
Keyword(s):  
Compressive Strength ◽  
Void Ratio ◽  
Infiltration Rate ◽  
Pervious Concrete ◽  
Ratio Test ◽  
Concrete Compressive Strength ◽  
Run Off ◽  
Compressive Strength Test ◽  
Rate Test ◽  
Alternative Solutions

ABSTRACTThe application of pervious concrete has been increasing in the area of civil engineering to be one of the alternative solutions in reducing stormwater run-off and prevents flooding. This research aims to investigate the compressive strength and permeability of pervious cement concrete with various of cement:aggregate ratio = 1:2, 1:4 and 1:6, and at a water cement ratio of 0.3. The proportion that obtained highest compressive strength at 7 days was then selected to investigate the effect of superplasticizer addition in pervious concrete based on the results of compressive strength test at 7, 14 and 28 days, and void ratio test at 7 and 28 days. The infiltration rate test was also conducted according to ASTM C1701-standard to analyse the permeability level of pervious concrete with and without superplaticizer. The results show that the optimum compressive strength of pervious concrete at 7 days peaked at 5.67 MPa, reached by the mixtures with cement:aggregate ratio = 1:2. The addition of 0.5% superplasticizer by weight of cement in this mixture was found effective in improving the compressive strength of pervious concrete up to 8.51 MPa, 10.92 MPa and 13.47 MPa at 7, 14 and 28 days, respectively. It can be concluded that the use of superplasticizer has an effect in increasing the bonding between aggregate-paste and therefore, improves the compressive strength and balance the permeability properties of pervious cement concrete.Key words : Pervious concrete, compressive strength, void ratio, permeability, superplasticizerABSTRAKAplikasi beton berpori semakin mendapat perhatian di bidang Teknik Sipil karena dapat dijadikan sebagai salah satu solusi untuk mengurangi limpasan air hujan dan mencegah banjir. Penelitian ini bertujuan untuk mengivestigasi karakteristik beton berpori berdasarkan pengujian kekuatan tekan dan permeabilitas beton dengan variasi campuran komposisi semen:agregat = 1:2. 1:4 dan 1:6 dan FAS = 0,3. Dari komposisi campuran yang menghasilkan kuat tekan tertinggi pada 7 hari, dilakukan penelitian lanjutan dengan menggunakan bahan tambah superplasticizer untuk pengujian kuat tekan umur beton 7, 14, dan 28 hari serta pengujian porositas pada umur 7 dan 28 hari. Pengujian laju infiltrasi juga dilakukan berdasarkan standard ASTM C1701 untuk mengevaluasi tingkat permeabilitas beton berpori dengan dan tanpa menggunakan superplasticizer. Hasil penelitian menunjukkan bahwa kuat tekan optimum beton berpori pada umur 7 hari dihasilkan oleh campuran semen:agregat = 1:2 dengan nilai sebesar 5,67 MPa. Penambahan superplasticizer sebesar 0.5% dari berat semen pada komposisi campuran ini menghasilkan nilai kuat tekan beton berpori berturut-turut sebesar 8,51 MPa, 10,92 MPa dan dan 13,47 MPa pada umur beton 7, 14 dan 28 hari. Penggunaan superplasticizer pada komposisi yang tepat disimpulkan memiliki pengaruh dalam meningkatkan ikatan antara agregat dan pasta semen sehingga memperbaiki karakteristik kuat tekan beton berpori dan tingkat permeabilitasnya.Kata kunci : Beton berpori, kuat tekan, porositas, permeabilitas, superplasticizer

scholarly journals Influence of Using Waste Plastic and/or Recycled Rubber as Coarse Aggregates on the Performance of Pervious Concrete

Eng ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 153-166
Author(s):  
Lewis Cole ◽  
Ramez Bakheet ◽  
Shatirah Akib
Keyword(s):  
Compressive Strength ◽  
Infiltration Rate ◽  
Pervious Concrete ◽  
Waste Materials ◽  
Waste Products ◽  
Waste Plastic ◽  
Coarse Aggregates ◽  
Rate Test ◽  
Rainwater Runoff ◽  
Recycled Rubber

Flooding is one of the climatic change consequences that has become a dangerous threat to many coastal cities. Pervious concrete is considered a solution to decrease rainwater runoff and mitigate flood effects, as it allows water to percolate through the ground and prevent possible damage. Using waste products as aggregates in pervious concrete not only exploits waste materials and makes it valuable but also reduces the amount of this waste ending in the landfill or harming the environment, and it decreases the demand for natural resources. Infiltration rate test and compressive strength tests were conducted to investigate the effect of using waste plastic and/or recycled rubber as concrete coarse aggregates with different ratios (5%, 10%, 15%, 20%, and 25%) on the pervious concrete. The results showed that increasing the waste materials in concrete decreased the compressive strength for all ratios while increased the infiltration rate values.

scholarly journals PENGARUH PENGGUNAAN LIMBAH PLASTIK POLYPROPYLENE (PP) SEBAGAI CAMPURAN AGREGAT KASAR TERHADAP KUAT TEKAN DAN TARIK PADA BETON FC’ 25 MPA

2019 ◽  
Vol 3 (2) ◽  
pp. 81-89
Author(s):  
Angga Pirman Firdaus ◽  
Jonbi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Strength Test ◽  
Plastic Waste ◽  
Concrete Mixture ◽  
Strength Testing ◽  
Concrete Compressive Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test ◽  
Waste Mixture

Indonesia ranks second in the world's largest plastic waste producer after China. Each year, Indonesia can contributeup to 187.2 million tons of plastic waste, while China reaches 262.9 million tons of plastic waste. Based on the data, one way to utilize plastic waste by using plastic waste as a mixture of concrete, where the plastic used is polypropylene (PP) plastic with different percentage of concrete mixture, the test includes compressive strength test and tensile concrete. The results of concrete compressive strength testing with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in aggregate aggregate mixture decreased by 5.15%, 6.89% and 13.53%. As for the result of concrete tensile strength test with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in crude aggregate mixture decreased 17,61%, 24,13% dan 23,24%.

scholarly journals Experimental Study on Strength of Pervious Concrete by Using Fine Aggregate

2021 ◽  
Vol 9 (12) ◽  
pp. 895-897
Author(s):  
Atif Jawed
Keyword(s):  
Compressive Strength ◽  
Void Ratio ◽  
Rice Husk Ash ◽  
Pervious Concrete ◽  
Void Content ◽  
Fine Aggregate ◽  
Coarse Aggregates ◽  
Fine Aggregates ◽  
Flow Through ◽  
Concrete Matrix

Abstract: Pervious concrete is a special type of concrete, which consists of cement, coarse aggregates, water and if required and other cementations materials. As there are no fine aggregates used in the concrete matrix, the void content is more which allows the water to flow through its bodyThe main aim of this project was to improve the compressive strength characteristics of pervious concrete. But it can be noted that with increase in compressive strength the void ratio decreases. Hence, the improvement of strength should not affect the porosity property because it is the property which serves its purpose. In this investigation work the compressive strength of pervious concrete is increased by a maximum of 18.26% for 28 days when 8% fine aggregates were added to standard pervious concrete Keywords: W/C ratio, pervious Concrete, sugarcane bagasse’s ash, rice husk ash compressive strength, fine aggregates

scholarly journals Influence of Restrained Condition on Mechanical Properties, Frost Resistance, and Carbonation Resistance of Expansive Concrete

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2136
Author(s):  
Nguyen Duc Van ◽  
Emika Kuroiwa ◽  
Jihoon Kim ◽  
Hyeonggil Choi ◽  
Yukio Hama
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Frost Resistance ◽  
Total Porosity ◽  
Length Change ◽  
Ratio Test ◽  
Expansive Concrete ◽  
Restrained Condition ◽  
Carbonation Resistance ◽  
Compressive Strength Test

This paper presents the results of an experimental investigation of the effect of the restrained condition on the mechanical properties, frost resistance, and carbonation resistance of expansive concrete with different water–binder ratios. In this study, length change ratio test, expansion strain test, compressive strength test, mercury intrusion porosimetry test, underwater weighing test, freezing–thawing test, and accelerated carbonation test were performed to evaluate the mechanical properties, pore size distribution, total porosity, and durability of expansive concrete under both restrained and unrestrained conditions. The test results indicate that the length change ratio and expansion strain of the expansive concrete were controlled by the restrained condition. The compressive strength of expansive concrete was enhanced by the triaxial restraining when the amount of expansive additive was 40 kg/m3 of concrete. Two hypotheses were described to explain the change of pore structure change expansive mortar. The results also indicate that the carbonation resistance and frost resistance were improved by the uniaxial restrained condition. Furthermore, the effect of the restrained condition must be considered to evaluate not only the experimental results of the expansive concrete with a high EX replacement level but also the expansive concrete combining other cement replacement materials.

Low Strength Self Compacting Concrete Compressive Strength Test

2013 ◽  
Vol 275-277 ◽  
pp. 2041-2044
Author(s):  
Feng Yan ◽  
Nan Pang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Compression Strength ◽  
Strength Test ◽  
The Self ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Intensity Index ◽  
Compressive Strength Test ◽  
Low Strength

In this paper,the mechanical properties were studied,the self compacting concrete cubic compression strength,prismatic compressive strength test,discussed two kinds of relationship between intensity index.

scholarly journals PENGARUH CANGKANG KEMIRI SEBAGAI PENGGANTI AGREGAT KASAR TERHADAP SIFAT MEKANIK BETON (EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE)

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete

scholarly journals PENGARUH CAMPURAN AIR LIMBAH (AIR SELOKAN) TERHADAP KUAT TEKAN BETON f’c 14.5 Mpa (K-175)

UKaRsT ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 7
Author(s):  
Rasio Hepiyanto ◽  
Dwi Kartikasari
Keyword(s):  
Waste Water ◽  
Compressive Strength ◽  
Fine Aggregate ◽  
Clean Water ◽  
Concrete Compressive Strength ◽  
Housing Projects ◽  
Technological Advances ◽  
Compressive Strength Test ◽  
Worker Housing ◽  
Test Result

Improving technological advances, the use of concrete as a building is very popular in Indonesia. Because it can utilize locally available materias such as crushed stone, pebble, sand, cement and water at a relatively cheap price. In everyday use is often found in construction worker housing projects that use waste water (Water Sewer) for the construction of concrete. This certainly requires a closer examination toward the quality of concrete produced. The method of data analysis begins with a cement investigation, coarse and fine aggregate. Concrete mixing uses clean water (PDAM) as reference and waste water (Water Sewage) from Unisla rusunawa building. From result of analysis which have been done, concrete compressive strength test result at age 7, 14 and 28 days with mixing of clean water equal to 13,68 Mpa, 18,51 Mpa, 21,04 Mpa, while concrete test result at Age 7, 14 And 28 days with Water Sewage mixing of 9.99 MPa, 13.35 MPa and 15.36 MPa.Keywords : Waste Water, Concrete, Compressive Strength

scholarly journals PEMANFAATAN LIMBAH GYPSUM BOARD DAN BATU BATA MERAH UNTUK SUBSTITUSI SEMEN PADA PEMBUATAN BETON

2019 ◽  
Vol 2 (2) ◽  
pp. 333
Author(s):  
Didik Hadi Prayogo ◽  
Ahmad Ridwan ◽  
Sigit Winarto
Keyword(s):  
Compressive Strength ◽  
Building Blocks ◽  
New Materials ◽  
Concrete Compressive Strength ◽  
Gypsum Board ◽  
Normal Concrete ◽  
Compressive Strength Test ◽  
Average Compressive Strength ◽  
Main Material

Concrete is one of the most vital building blocks, from columns, bricks, paving to roads made of concrete, so the use of concrete tends to be high. Concrete is often used as the main buffer in a building, so good quality is needed, but this is not accompanied by a declining quality of the material, so it requires innovation in the addition of new materials that can at least reduce the needs of the main material for making concrete, one of which is the utilization of Gypsum Board waste and red brick waste. The results of testing the concrete compressive strength test with the addition of Gypsum Board waste and red brick waste to cement obtained pretty good results. Concrete, which has the highest average compressive strength than normal concrete, has concrete with a mixture of red brick and gypsum waste of 10% each with a compressive strength of 250.56 kg / cm², and which has the lowest compressive strength have concrete with a mixture of red bricks and gypsum waste 15% each with a compressive strength of 195.56 kg / cm².Beton merupakan salah satu unsur penyusun bangunan paling vital mulai dari kolom,bata, paving hingga jalan terbuat dari beton sehingga penggunaan beton cenderung tinggi. Beton sering digunakan sebagai bahan penyangga utama pada suatu bangunan maka diperlukan kualitas yang baik, namun hal tersebut tidak di sertai dengan kualitas bahan yang kian menurun,makadiperlukan inovasi penambahan bahan baru yang setidaknya dapat mengurangi kebutuhan bahan utama pembuat beton, salah satunya pemanfaatan limbah Gypsum Board dan limbah batu bata merah Hasil dari pengetesan uji kuat tekan beton dengan penambahan limbah Gypsum Board dan limbah batu bata merah terhadap semen didapatkanhasil yang cukup bagus Beton yang memiliki nilai kuat tekan rata-rata paling tinggi selain beton normal di miliki beton dengan campuran batu bata merah dan limbah gypsum masing-masing 10% dengan nilai kuat tekan sebesar 250,56 Kg/cm²,dan yang memiliki nilai kuat tekan paling rendah di miliki beton dengan campuran batu bata merah dan limbah gypsum masing-masing 15% dengan nilai kuat tekan 195,56 Kg/cm².

Compressive Strength of Sustainable Concrete Mixes with Different Maximum Size Aggregates

2019 ◽  
Vol 803 ◽  
pp. 228-232
Author(s):  
Samer Al Martini ◽  
Ziad Hassan ◽  
Ahmad Khartabil
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Maximum Size ◽  
Controlled Environment ◽  
Concrete Compressive Strength ◽  
Binary Blends ◽  
Sustainable Concrete ◽  
Concrete Mixtures ◽  
Compressive Strength Test ◽  
High Range

The current study investigates the effect of aggregate’s maximum size on the compressive strength of sustainable flowable concrete. The concrete mixtures were mixed for 2 hours under lab controlled environment. The purpose of the prolonged mixing was to simulate concrete in a transit truck during transportation to a construction site. The mechanical properties of the mixes were investigated through compressive strength test. Three groups of concrete mixes were prepared: the first one with 20 mm maximum size aggregates, the second group with 10 mm maximum size aggregates and third group with 5 mm max size. The concrete mixes incorporated GGBs and fly ash (FA) in binary blends. To maintain consistent initial slump for all mixes, polycarboxylate based high-range water-reducing admixture (HRWR) was used. The concrete compressive strength was measured at 1, 3, 7, and 28 days. The results showed that the mechanical properties of sustainable flow mixtures investigated were highly affected by FA, GGBS, and maximum size aggregates.

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