Detailed study on flexural strength of polypropylene fiber reinforced self-compacting concrete

Ramesh, B.; Gokulnath, V.; Kumar, Mahesh

doi:10.1016/j.matpr.2019.11.292

Cited by 20 publications

(7 citation statements)

References 12 publications

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“…The response surface plots indicate combined effects of two factors on response Figs. 3,4,5,6,7,8,9,10,11,12,13.…”

Section: Slump Flowmentioning

confidence: 99%

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Aziz,

Mehboob,

Tayyab

et al. 2024

Sci Rep

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Within concrete engineering, the uptake of self-compacting concrete (SCC) represents a notable trend, delivering improved workability and placement efficiency. However, challenges persist, notably in achieving optimal performance while mitigating environmental impacts, particularly in cement consumption. However, simply reducing the cement content in the mix design can directly compromise the structural-concrete requirements. Towards these challenges, global trends emphasize the utilization of appropriate waste materials in blended concrete. This study explored a promising strategy by integrating supplementary cementitious materials (SCMs) to contribute to the United Nations' Sustainable Development Goals (SDGs) in addition to the engineering contributions. It suggests an optimal combination of Metakaolin (MK) and Limestone Powder (LP) to partially substitute cement. The research methodology employs the response surface method (RSM) to systematically explore the ideal ingredient ratios. Through a comprehensive analysis of orthogonal array of 16 mixes, encompassing both mixture and process variables, this study aims to explain the effects of MK and LP addition on the rheological and mechanical properties of SCC with varying cement replacement levels. In terms of mixture constituents, the total composition of cement, MK, and LP was fixed at 100%, while coarse aggregate (CA), fine aggregate (FA), and the water-to-binder ratio were held as process variables. In order to assess the rheological properties of the mix-design, various tests including slump flow, L-box, and sieve segregation were conducted. Additionally, to evaluate mechanical strength, samples were tested for compressive strength at both 7 and 28 days. Findings from the experiments reveal higher concentrations of MK result in reduced workability and hardened properties. Through RSM-based designed experimentation covering both rheological and mechanical aspects, it is observed that the optimal cement replacement level lies between 40 and 55%. The findings of this study contribute to the advancement of sustainable and structurally robust concrete practices, offering insights into the optimal utilization of SCMs to meet both engineering requirements and environmental sustainability goals.

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“…The response surface plots indicate combined effects of two factors on response Figs. 3,4,5,6,7,8,9,10,11,12,13.…”

Section: Slump Flowmentioning

confidence: 99%

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Aziz,

Mehboob,

Tayyab

et al. 2024

Sci Rep

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“…Air mempunyai peran yang penting dalam pembuatan beton ataupun paving block. [20] Air yang digunakan dalam penelitian ini berasal dari sumber air bersih Laboratorium…”

Section: Airunclassified

PEMANFAATAN LIMBAH TEMPURUNG KELAPA SEBAGAI CAMPURAN PAVING BLOCK (Ditinjau dari Kuat Tekan dan Resapan Air)

Sucahyo¹,

Agustapraja²,

Damara³

2020

UKaRsT

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The main objective of this study was to find out and analyze how much the influence of the coconut shell charcoal had on changes in compressive strength and water absorption in the K-175 paving block. This research method is experimental research, which is a research of making paving block specimens, by conducting activities or experiments using coconut shell waste as a mixture of paving blocks, with a mix design mix referring to the comparison of concrete mix with K-175 quality (SNI 03-2834-2000). The conversion value of compressive strength of specimens at the age of 7 days to 28 days from specimens N, 5%, 10%, 15% and 20% is 271,80 kg/cm², 205,12 kg/cm², 102,57 kg/cm²,76,92 kg/cm² and 64,11 kg/cm² respectively. In the normal test code, the paving block is classified as class B quality, while the 5% specimen code is classified as class B quality, for the test object code 10%, 15%, and 20% do not meet the paving block quality standards. The results of the water absorption test increased in paving blocks with a combination of coconut shell charcoal. All of them have increased water infiltration on paving blocks.Tujuan utama dari penelitian ini adalah untuk mengetahui dan menganalisa seberapa besar pengaruh arang tempurung kelapa terhadap perubahan kuat tekan dan resapan air pada paving block K-175. Metode penelitian ini adalah penelitian eksperimen, yaitu penelitian pembuatan benda uji paving block, dengan cara melakukan kegiatan atau percobaan pemanfaatan limbah tempurung kelapa sebagai campuran paving block, dengan perbandingan mix design mengacu pada perbandingan campuran beton dengan mutu K-175 (SNI 03-2834-2000). Hasil nilai konversi kuat tekan benda uji pada umur 7 hari ke umur 28 hari dari benda uji N, 5%, 10%, 15%, dan 20% adalah 271,80 kg/cm², 205,12 kg/cm², 102,57 kg/cm²,76,92 kg/cm² dan 64,11 kg/cm². Pada kode benda uji normal paving block tergolong dalam mutu kelas B, sedangkan pada kode benda uji 5% tergolong dalam mutu kelas B, untuk kode benda uji 10%, 15%, dan 20% tidak memenuhi standar mutu paving block. Hasil dari uji resapan air paving block dengan penambahan arang tempurung kelapa dari benda uji 5%, 10%, 15% dan 20%. Kesemuanya mengalami peningkatan resapan air pada paving block.

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“…Air mempunyai peran yang penting dalam pembuatan beton. [16] Dengan adanya air, semen dapat bereaksi dan membentuk pasta yang berfungsi sebagai pengikat agregat. [9] Penambahan air yang berlebihan akan membuat adukan mudah dikerjakan.…”

Section: Airunclassified

Pembuatan Beton Campuran Styrofoam Menggunakan Agregat Pasir Bengawan Solo

Hasyim

Kartikasari

2020

UKaRsT

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Concrete becomes a building material that has an important role and is in great demand. Composite materials concrete that is easily obtained is the advantages of concrete today. The specific gravity of concrete depends on the material making up of concrete. The smaller specific gravity of concrete will make the concrete have a lightweight; this will affect the dead load of the building. This research aims to find out how the process and also the effect of styrofoam mixture using Bengawan Solo River sand with the initial quality used is K-250. The research method used is the experimental method and even the study of previous research theories. Test specimens used are cylindrical, with variations in the percentage of the addition of styrofoam 0%, 1%, and 1.5%. Compressive strength testing is performed at the age of 7 days of concrete. The test results show that the addition of styrofoam in a concrete mixture affects the compressive strength of concrete, with the addition of styrofoam the percentage of 1% obtains a compressive strength of 21.899 MPa, while the addition of styrofoam percentage of 1% obtains a compressive strength of 20.453 MPaBeton menjadi material bangunan yang memeiliki peran penting dan banyak diminati. Material penyusun beton yang mudah didapatkan menjadi keunggulan beton saat ini. Berat jenis beton bergantung pada material penyusun beton. Berat jenis beton yang lebih kecil akan membuat beton memiliki bobot yang ringan, hal tersebut akan berpengaruh pada beban mati bangunan. Penelitian ini dilakukan bertujuan untuk mengetahui bagaimana proses dan pengaruh campuran styrofoam menggunakan pasir Sungai Bengawan Solo dengan mutu awal yang dgunakan yaitu K-250. Metode penelitian yang digunakan yaitu metode eksperimental dan juga kajian teori penelitian terdahulu. Benda uji yang digunakan berbentuk silinder dengan variasi prosentase penambahan styrofoam 0%, 1% dan 1.5%. Pengujian kuat tekan dilakukan saat umur beton 7 hari. Hasil pengujian menunjukkan penambahan styrofoam dalam campuran beton mempengaruhi kuat tekan beton, dengan penambahan styrofoam prosentase 1% memperoleh kuat tekan sebesar 21,899 MPa, sedangkan penambahan styrofoam prosentase 1% memperoleh kuat tekan sebesar 20,453 Mpa.

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Detailed study on flexural strength of polypropylene fiber reinforced self-compacting concrete

Cited by 20 publications

References 12 publications

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

Enhancing sustainability in self-compacting concrete by optimizing blended supplementary cementitious materials

PEMANFAATAN LIMBAH TEMPURUNG KELAPA SEBAGAI CAMPURAN PAVING BLOCK (Ditinjau dari Kuat Tekan dan Resapan Air)

Pembuatan Beton Campuran Styrofoam Menggunakan Agregat Pasir Bengawan Solo

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