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Chopra A, Singh S, Kanoungo A, Singh G, Gupta NK, Sharma S, Joshi SK, Eldin SM. Multi‑objective optimization of nitrile rubber and thermosets modified bituminous mix using desirability approach. PLoS One 2023; 18:e0281418. [PMID: 36809361 PMCID: PMC9942971 DOI: 10.1371/journal.pone.0281418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/24/2023] [Indexed: 02/23/2023] Open
Abstract
A variety of materials, including waste and rubber products, have been used in road construction to improve the performance of bituminous pavements. The present investigation is focused on modifying bitumen using Nitrile rubber (NBR) with different thermosets namely Bakelite (B), Furan Resin (FR), and Epoxy resin (ER). The emphasis of the problem is to arrive at a mix to achieve maximum Marshall Stability (MS) and minimum flow value of Modified Bituminous Concrete. Taguchi DOE technique has been used to design the experiments using Minitab software. Analysis of Variance (ANOVA) and Multi-objective optimization has been performed using the desirability approach in Design expert software. ANOVA analysis predicts that NBR, B, ER, and FR are the major significant parameters for Marshall Stability (MS) and Flow Value (FV). It has also been analyzed from SEM and EDS images of modified bitumen that sample S1 (5% NBR, 10% Bakelite, 10% FR, 2.5% ER) has a fine surface with small pores as compared to sample S34 (10% NBR, 0% Bakelite 10% FR, 2.5% ER). Multi-optimization results suggested the optimal conditions are achieved at NBR-7.6%, Bakelite-4.8%, FR-2.5%, and ER-2.6% for MS and FV. The maximum MS is 14.84 KN and the minimum FV is 2.84 mm is obtained using optimum conditions. To validate the optimization results, the confirmation runs have been conducted, and obtained results are within 5% error with optimal conditions.
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Affiliation(s)
- Avani Chopra
- Department of Civil Engineering, Chandigarh University, Mohali, Punjab, India
| | - Sandeep Singh
- Department of Civil Engineering, Chandigarh University, Mohali, Punjab, India
- * E-mail: (SME); (SS); , (SS)
| | - Abhishek Kanoungo
- Department of Civil Engineering, Chitkara School of Engineering & Technology, Chitkara University, Himachal Pradesh, India
| | - Gurpreet Singh
- Department of Mechanical Engineering, Chandigarh University, Mohali, Punjab, India
| | - Naveen Kumar Gupta
- Mechanical Engineering Department, Institute of Engineering and Technology, GLA University, Mathura, UP, India
| | - Shubham Sharma
- Mechanical Engineering Department, University Centre for Research and Development, Chandigarh University, Mohali, Punjab, India
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, China
- * E-mail: (SME); (SS); , (SS)
| | - Sanjeev Kumar Joshi
- Uttaranchal Institute of Technology, Uttaranchal University, Dehradun, India
| | - Sayed M. Eldin
- Center of Research, Faculty of Engineering, Future University in Egypt, New Cairo, Egypt
- * E-mail: (SME); (SS); , (SS)
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Rahman I, Singh P, Dev N, Arif M, Yusufi FNK, Azam A, Alam MM, Singh S, Chohan JS, Kumar R, Sharma L, Tag-Eldin E, Sharma S, Asyraf MRM. Improvements in the Engineering Properties of Cementitious Composites Using Nano-Sized Cement and Nano-Sized Additives. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15228066. [PMID: 36431551 PMCID: PMC9696350 DOI: 10.3390/ma15228066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/03/2022] [Accepted: 11/03/2022] [Indexed: 05/08/2023]
Abstract
The findings of an extensive experimental research study on the usage of nano-sized cement powder and other additives combined to form cement-fine-aggregate matrices are discussed in this work. In the laboratory, dry and wet methods were used to create nano-sized cements. The influence of these nano-sized cements, nano-silica fumes, and nano-fly ash in different proportions was studied to the evaluate the engineering properties of the cement-fine-aggregate matrices concerning normal-sized, commercially available cement. The composites produced with modified cement-fine-aggregate matrices were subjected to microscopic-scale analyses using a petrographic microscope, a Scanning Electron Microscope (SEM), and a Transmission Electron Microscope (TEM). These studies unravelled the placement and behaviour of additives in controlling the engineering properties of the mix. The test results indicated that nano-cement and nano-sized particles improved the engineering properties of the hardened cement matrix. The wet-ground nano-cement showed the best result, 40 MPa 28th-day compressive strength, without mixing any additive compared with ordinary and dry-ground cements. The mix containing 50:50 normal and wet-ground cement exhibited 37.20 MPa 28th-day compressive strength. All other mixes with nano-sized dry cement, silica fume, and fly ash with different permutations and combinations gave better results than the normal-cement-fine-aggregate mix. The petrographic studies and the Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) analyses further validated the above findings. Statistical analyses and techniques such as correlation and stepwise multiple regression analysis were conducted to compose a predictive equation to calculate the 28th-day compressive strength. In addition to these methods, a repeated measures Analysis of Variance (ANOVA) was also implemented to analyse the statistically significant differences among three differently timed strength readings.
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Affiliation(s)
- Ibadur Rahman
- Department of Civil Engineering, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Priyanka Singh
- Department of Civil Engineering, Amity School of Engineering & Technology, Amity University Uttar Pradesh, Noida 201313, India
| | - Nirendra Dev
- Department of Civil Engineering, Delhi Technological University, Shahbad, Daulatpur, Bawana Road, New Delhi 110042, India
| | - Mohammed Arif
- Department of Civil Engineering, Aligarh Muslim University, Aligarh 202002, India
| | - Faiz Noor Khan Yusufi
- Department of Statistics & Operations Research, Aligarh Muslim University, Aligarh 202002, India
| | - Ameer Azam
- Department of Applied Physics, Aligarh Muslim University, Aligarh 202002, India
| | - M. Masroor Alam
- Department of Civil Engineering, Aligarh Muslim University, Aligarh 202002, India
| | - Sandeep Singh
- Department of Civil Engineering, University Center for Research and Development, Chandigarh University, Mohali 140413, India
| | - Jasgurpreet Singh Chohan
- Mechanical Engineering Department, University Center for Research & Development, Chandigarh University, Mohali 140413, India
| | - Raman Kumar
- Mechanical Engineering Department, University Center for Research & Development, Chandigarh University, Mohali 140413, India
| | - Lovneesh Sharma
- Department of Civil Engineering, Universal Institute of Engineering & Technology, Mohali 140413, India
| | - Elsayed Tag-Eldin
- Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
- Correspondence: (E.T.-E.); or (S.S.)
| | - Shubham Sharma
- Mechanical Engineering Department, University Center for Research & Development, Chandigarh University, Mohali 140413, India
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China
- Correspondence: (E.T.-E.); or (S.S.)
| | - Muhammad Rizal Muhammad Asyraf
- Engineering Design Research Group (EDRG), Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
- Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
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Kumar M, Anand A, Chatterjee R, Sharma S, Maiti TK, Dwivedi SP, Saxena A, Li C, Eldin EMT. Investigation on Carbonation and Permeability of Concrete with Rice Hush Ash and Shop Solution Addition. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15176149. [PMID: 36079530 PMCID: PMC9457775 DOI: 10.3390/ma15176149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/06/2022] [Accepted: 08/19/2022] [Indexed: 05/24/2023]
Abstract
The goal of this study was to determine the coefficient of permeability as well as the rate of carbonation of concrete constructed with rice husk ash (RHA) as a partial replacement for cement (i.e., 5%, 10%, and 15%) and two different concentrations of soap solutions (i.e., 1 percent and 2 percent). The microstructural studies of RHA, and carbonated samples have been conducted by using Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD) analysis. According to this study, the carbonation depth of concrete made with 1% and 2% soap solution concentration and without rice husk ash decreased by 11.89% and 46.55%, respectively. From the results, it may also be observed that the carbonation depth of concrete made with up to 10% replacement of cement by rice husk ash led to maximum carbonation resistance, while more than 10% replacement of cement showed higher carbonation depth. It is also observed that the coefficient of permeability of concrete with 2% soap solution significantly decreased as compared to the 1% soap solution and control mix. It may be observed from the SEM images that 0% soap solution (M1) concrete has a very rough concrete surface which may indicate more voids. However, 2% soap solution concrete has a much smoother surface, which indicates a smaller number of voids. Furthermore, the SEM images showed that the soap solution helps in filling the voids of concrete which ultimately helps in reduction in permeability. Energy Dispersive X-Ray Analysis (EDX) of concrete with 0% (M1) and 2% (M6) soap solution disclosed that the concrete with 2% soap solution (M6) exhibited more silica element formation than the concrete with no soap solution (M1).
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Affiliation(s)
- Manish Kumar
- Department of Civil Engineering, GD Goenka University, Gurugram 122103, India
| | - Ashutosh Anand
- Department of Electronics and Communication Engineering, Presidency University, Bangalore 560064, India
| | - Rajeshwari Chatterjee
- Department of Hotel Management & Catering Technology, Birla Institute of Technology Mesra, Ranchi 835215, India
| | - Shubham Sharma
- Department of Mechanical Engineering, IK Gujral Punjab Technical University, Main Campus-Kapurthala, Kapurthala 144603, India
- Mechanical Engineering Department, University Center for Research & Development, Chandigarh University, Mohali 140413, India
| | - Tushar Kanti Maiti
- Department of Polymer and Process Engineering, IIT Roorkee, Saharanpur Campus, Saharanpur 247001, India
| | | | - Ambuj Saxena
- G.L. Bajaj Institute of Technology & Management, Greater Noida 201310, India
| | - Changhe Li
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China
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Research on Dynamic Compressive Performance and Failure Mechanism Analysis of Concrete after High Temperature and Rapid Cooling. MATERIALS 2022; 15:ma15134642. [PMID: 35806764 PMCID: PMC9267323 DOI: 10.3390/ma15134642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 02/01/2023]
Abstract
To investigate the dynamic compressive properties of concrete after high temperature and rapid cooling, an experimental study was carried out by considering five temperatures and four strain rates. The coupling effect of high temperature and strain rate on concrete damage morphology and mechanical parameters was comparatively analyzed. The main conclusions are as follows: the compressive damage morphology of concrete is affected by strain rate development trends of significant variability under different temperature conditions. As the strain rate increases, the compressive stress and elastic modulus of concrete are gradually increased. As the temperature increases, the increase in compressive stress is gradually reduced by the strain rate. For the temperatures of 20 °C and 800 °C, the increase in compressive stress by the strain rate is 38.69% and 7.78%, respectively. Meanwhile, SEM and CT scanning technology were applied to examine the mechanism of the effect of high temperature and strain rate on the mechanical properties of concrete from the microscopic perspective, and the corresponding constitutive model was proposed.
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Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
One of the unifying factors for all countries is the large consumption of chicken, and other, eggs in food and other types of economic activity. After using various types of eggs for their intended purpose, a large amount of waste accumulates in the form of eggshells. Currently, this problem exists and needs a non-trivial, original solution. The aim of the work was to fill the scientific gap in the direction of studying the microstructure formation of improved nano-modified environmentally-friendly concrete based on eggshell powder and obtaining a concrete composition for the manufacture of an industrial sample of such a material. An environmentally-friendly concrete was obtained, the characteristics of which were improved relative to standard concrete by modifying it with eggshell powder, for which the optimal dosage was determined. The most effective was the replacement of part of the cement with eggshell powder in the amount of 10%. The maximum increase in strength characteristics ranged from 8% to 11%. The modulus of elasticity increased by 4% compared to the control samples without eggshell powder. The maximum reduction in deformations under axial compression and tension in comparison with the control values ranged from 5% to 10%. The study of the composite’s microstructure nano-modified with eggshell powder, and an analysis of the changes occurring in this microstructure due to nano-modification, confirmed the improvement in characteristics and the optimal dosage of eggshell powder.
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