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 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 Effect of Fly Ash on the Compressive Strength of Green Concrete

2020 ◽  
Vol 10 (3) ◽  
pp. 5728-5731 ◽  
Author(s):  
S. A. Chandio ◽  
B. A. Memon ◽  
M. Oad ◽  
F. A. Chandio ◽  
M. U. Memon
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Recycled Aggregates ◽  
Waste Materials ◽  
Partial Replacement ◽  
Equal Proportion ◽  
Standard Size ◽  
Green Concrete ◽  
Coarse Aggregates ◽  
Management Issues

This research paper aims at investigating the effects of fly ash as cement replacement in green concrete made with partial replacement of conventional coarse aggregates with coarse aggregates from demolishing waste. Green concrete developed with waste materials is an active area of research as it helps in reducing the waste management issues and protecting the environment. Six concrete mixes were prepared using 1:2:4 ratio and demolishing waste was used in equal proportion with conventional aggregates, whereas fly ash was used from 0%-10% with an increment of 2.5%. The water-cement ratio used was equal to 0.5. Out of these mixes, one mix was prepared with all conventional aggregates and was used as the control, and one mix with 0% fly ash had only conventional and recycled aggregates. The slump test of all mixes was determined. A total of 18 cylinders of standard size were prepared and cured for 28 days. After curing the compressive strength of the specimens was evaluated under gradually increasing load until failure. It is observed that 5% replacement of cement with fly ash and 50% recycled aggregates gives better results. With this level of dosage of two waste materials, the reduction in compressive strength is about 11%.

scholarly journals Feasibility study of the use of Groundnut Shells as Fine Aggregates in Light weight Concrete Construction

2015 ◽  
Vol 1 (1) ◽  
pp. 13 ◽  
Author(s):  
Henry Tata Kimeng ◽  
Olurotimi Olusegun Ekundayo ◽  
Mustapha Sani ◽  
Kigha Frederick
Keyword(s):  
Compressive Strength ◽  
Moisture Absorption ◽  
Waste Materials ◽  
Fine Aggregate ◽  
Waste Products ◽  
Scarce Resources ◽  
Concrete Panels ◽  
Fine Aggregates ◽  
Partition Walls ◽  
Groundnut Shell

Issues bothering on sustainability in our society today have generated a lot of curious interest among researchers. The need to optimize the use of scarce resources, reduce cost of construction, and reduce environmental pollution has necessitated the research into many waste materials that pose a lot of threat to the environment. One of these waste materials is groundnut shell which is abundant in Northern Nigeria and which is normally left to rot and pose an environmental nuisance. This research therefore sought to use groundnut shell as a partial or full replacement as fine aggregate in light concrete panels with the ultimate aim of reducing the amount of these waste products in our environment and also indirectly increasing groundnut production if the research is successful. This is because farmers will not only sell the groundnuts but also will sell the waste products. 63 concrete samples were casted using groundnut shell replacements of 0%, 10%, 20%, 30%, 50%, 70%, 100% and tested for 7days, 14days and 28 days for compressive strength tests. The density of the various samples measured and swelling tests were also carried out. From the results of the laboratory tests the density of the cubes ranged from 830kg/m3 for cubes with only groundnut shells to 2160kg/m3 for cubes with only sand as fine aggregates. The average compressive strength range for 0% ground shell to 100% ground shell was 5.83N/mm2 to 0.9N/mm2 at 7 days, 8.07 to 0.5 N/mm2 at 14 days and 10 to 0.6 N/mm2 at 28 days while moisture absorption increased from 0.47 to 2.04%. The strength results indicate that groundnut shell panels cannot be used for structural purposes but will be suitable for non-load bearing partition walls. Replacements of 30 to 70% had suitable strength and can be used for this purpose. It is recommended that further research to be carried out to determine its acoustic and thermal properties.

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 Use of Plastic Aggregates in Concrete

2019 ◽  
Vol 9 (1) ◽  
pp. 4406-4412
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Fly Ash ◽  
Construction Industry ◽  
Negative Impact ◽  
Raw Materials ◽  
Waste Products ◽  
Waste Plastic ◽  
Coarse Aggregates ◽  
Materials Used

There is no doubt concrete is most useful thing in construction industry but it has a negative impact also, just like a coin has two faces. Raw materials used in manufacturing of concrete affects the environment in one or the another negative way. Like manufacturing of cement produce carbon dioxide whereas the production of aggregates adds dust to the environment. Production of coarse aggregates also impact the geology of the area from they were extracted. A step taken in this direction is the use of waste products along with or in replacement of cement. Many of these materials are already in use, like silica fume, fly ash etc. In this study, plastic coarse aggregates were used in place of natural coarse aggregates. Plastic aggregates were produced by little processing of waste plastic. Plastic is the biggest threat to the environment, and it is affecting the environment rapidly. Some recent studies show that it can be used construction industry due to some of its properties like inert behavior, resistance to degradation etc. Also use of waste plastic can help in reducing plastic waste Various experiments were performed to test the mechanical properties of the concrete with plastic coarse aggregates. Concrete was prepared using plastic coarse aggregates in varying proportions of 0, 2.5, 5, 7.5 and 10%

scholarly journals EFFECTS OF METAKAOLIN ON COMPRESSIVE STRENGTH AND PERMEABILITY PROPERTIES OF PERVIOUS CEMENT CONCRETE

2019 ◽  
Vol 81 (5) ◽  
Author(s):  
Steve W. M. Supit ◽  
Romario W. Pandei
Keyword(s):  
Compressive Strength ◽  
Cement Composite ◽  
Infiltration Rate ◽  
Pervious Concrete ◽  
Concrete Sample ◽  
X Ray Diffraction ◽  
Interfacial Bond ◽  
Cement Concrete ◽  
Backscattered Electron ◽  
Electron Imaging

This paper presents the experimental results on the effect of metakaolin (MK) as a replacement of cement in pervious cement concrete based on compressive strength, void ratio and permeability test. Metakaolin was used to replace Portland Cement Composite (PCC) in pervious concrete by 10% (by wt.). The results show that pervious concrete sample containing 10% metakaolin with 1% superplasticizer exhibited 4 times higher compressive strength at 7 days when compared to normal cement concrete. In addition, the continuous voids of 10%MK concrete sample was found higher than PCC only, indicating the effectiveness of metakaolin in improving the interfacial bond of the binders due to micro-filler effect of metakaolin and the additional CSH gel formation. The continuous voids of pervious concrete with 10% MK is 17%, which is higher than the percentage of continuous voids in normal pervious concrete. This finding is also supported by the infiltration rate of concrete samples. Furthermore, the microstructure analysis through Backscattered Electron Imaging and X-Ray Diffraction reported denser matrix and CH reduction in polished paste samples due to 10%MK addition.

scholarly journals Infiltration Rate of Pervious Concrete on Street Curb Application

2019 ◽  
Vol 8 (2S2) ◽  
pp. 86-90
Keyword(s):  
New Technology ◽  
Drainage System ◽  
Side Surface ◽  
Infiltration Rate ◽  
Pervious Concrete ◽  
The Road ◽  
Concrete Mix Design ◽  
Rate Test ◽  
On The Road ◽  
Pass Through

The street curb and stormwater inlets are among the component often found on the road which serve as part of the urban stormwater drainage system. They act as a stormwater removal and discharge it into the underground drainage system. However, the current stormwater inlet practiced in Malaysia has limitations which often cause water ponding and consequently lead to road flooding. Rather than improving the performance of stormwater inlet, the flow interception and rate of stormwater removal may be enhanced by introducing a new technology called the pervious curb. It isto be made of pervious concrete which provide an ability to allow water to pass through it.This paper attempts to adapt the existingtwo pervious concrete mix design and applied it into the so-called pervious curb. Herein, a newly designed infiltration rate test was used to test the pervious concrete performance under the effect of infiltration through side surface of the concrete curb. While doing so, the infiltration rate of the pervious concrete will be investigated under varying slopes. Results showed that the infiltration rate is quite high and the rate of infiltration increases as the inclination gutter increases. Thus, it is proven that the new infiltration rate test is applicable and can be used for other similar applications. Furthermore, the test has significantly revealed that the pervious concrete has high potential in enhancing flow interception and able to reduce water ponding as a street curb.

scholarly journals KAJIAN KUAT TEKAN DAN INFILTRASI PADA BETON NON PASIR (Study Of Compressive Strength And Infiltration Of no-fines Concrete)

2019 ◽  
Vol 2 (2) ◽  
pp. 72
Author(s):  
Edi Kurniadi ◽  
Lava Himawan
Keyword(s):  
Compressive Strength ◽  
Urban Areas ◽  
Coarse Aggregate ◽  
Water Channel ◽  
Infiltration Rate ◽  
Porous Concrete ◽  
Coarse Aggregates ◽  
Infiltration Rates ◽  
Run Off ◽  
Groundwater Reserves

<p><em>No fines concrete can be known such as porous concrete, no-fines concrete and pervious concrete, because not use of sand in the mixture causing the cavities between coarse aggregates. When the rainy season, especially in urban areas there are many flood because the water is difficult to infiltration into the ground. Because permeable nature of non-fines concrete which can accelerate the absorption of water to the soil and to the water channel, reduce run-off and increase groundwater reserves. In this research will study for compressive strength and infiltration in non-finnes concrete. This research uses coarse aggregates from the results of stone crushing machines with coarse aggregate sizes (5-10) mm. cement: aggregate ratio used 1: 2; 1: 3; 1: 4; 1: 5; 1: 6; 1: 7; 1: 8. The study began with material checking, planning of material requirements, making non-sand concrete, then testing compressive strength, and infiltration testing at the age of 28 days. The results showed that the compressive strength of non-finnes concrete with a variation of the ratio of cement : gravel 1: 2  is  33.19 MPa while for a mixture of 1: 8 it is 5.23 MPa. The Infiltration rate has increased along with the greater variation in the ratio of the mixture. The maximum infiltration rate for a mixture of 1: 8 is 9.44 mm/sec. The infiltration rates in no-finnes concrete can be used to accelerate the absorption of water into the soil and can function to reduce water on the surface of the yard.</em></p>

scholarly journals Experimental Investigation of Compressive Strength and Infiltration Rate of Pervious Concrete by Fully Reduction of Sand

2018 ◽  
Vol 4 (4) ◽  
pp. 724 ◽  
Author(s):  
Aneel Manan ◽  
Mushtaq Ahmad ◽  
Fawad Ahmad ◽  
Abdul Basit ◽  
Muhammad Nasir Ayaz Khan
Keyword(s):  
Experimental Study ◽  
Experimental Investigation ◽  
Compressive Strength ◽  
Infiltration Rate ◽  
The Other ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Direct Relation

The aim of the study is to investigate compressive strength of pervious concrete by reduction of fine aggregate from zero to 100%, additionally investigate infiltration rate of pervious concrete. Experimental study has conducted at Cecos Engineering University Peshawar. The pervious concrete samples were produced for 7 and 28 days. Compressive strength of pervious concrete indicated higher reduction of the sand reduces compressive strength and almost 50% compressive strength decreased by reduction of 100% sand from the design mix. On the other side, infiltration rate for 28 days shows direct relation above 40% reduction of sand and highest 273% of infiltration rate by reducing 100% sand from the design mix. The 90% reduction of sand from concrete give considerable compressive strength of 2150 psi and infiltration rate of 165.79 inch/hour, which can be recommended for pavements of parking and walking area.

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