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Artykuły w czasopismach na temat „Concrete micro-environment temperature”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Egba, E. I., M. Ismail, and N. Bakhary. "Temperature Response in Hardened Concrete Subjected to Tropical Rainforest Environment." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1623–28. https://doi.org/10.5281/zenodo.809241.

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The objective of this paper is to characterize concrete micro-environment temperature response to the natural climate of the tropical rainforest. The peculiar warmth, high humidity, and low pressure nature of the tropical rainforest necessitated the present study. Temperature probes were inserted into concrete specimens subjected to the sheltered and unsheltered environment to measure the micro-environment temperature of the concrete, and study the hysteresis characteristics in relation to the climate temperature. Some mathematical relationships for forecasting the internal temperature of conc

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Egba, E. I., M. Ismail, and N. Bakhary. "Temperature Response in Hardened Concrete Subjected to Tropical Rainforest Environment." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1623–28. http://dx.doi.org/10.48084/etasr.1076.

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The objective of this paper is to characterize concrete micro-environment temperature response to the natural climate of the tropical rainforest. The peculiar warmth, high humidity, and low pressure nature of the tropical rainforest necessitated the present study. Temperature probes were inserted into concrete specimens subjected to the sheltered and unsheltered environment to measure the micro-environment temperature of the concrete, and study the hysteresis characteristics in relation to the climate temperature. Some mathematical relationships for forecasting the internal temperature of conc

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Aminu Alhassan, Yunusa, and Sunday Apeh. "Effect of micro-climate variations on carbonation rate of concrete in the inland environment." MATEC Web of Conferences 289 (2019): 02001. http://dx.doi.org/10.1051/matecconf/201928902001.

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In an inland environment, carbonation is the primary cause of initiation for potential corrosion of steel in reinforced concrete. This problem has been exacerbated over recent years by increased urbanisation and vehicular traffic, resulting in higher atmospheric carbon dioxide contents – a problem typical of economically active cities throughout the world. It is important that designers of reinforced concrete structures respond to these variations through appropriate specifications to ensure that structures perform satisfactorily over their intended service lives. This paper is part of a study

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Yan, H. Q., Ying Peng, and Qing Yuan Wang. "Experimental Research on Thermal Mechanical Behavior of Recycled Aggregate Concrete from Earthquake-Stricken Area." Advanced Materials Research 217-218 (March 2011): 1081–85. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.1081.

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Recycled aggregate concrete (RAC) is a kind of practical and economic material to reuse the great amount of construction and demolition wastes, which has received many discussions nowadays. In consistent with sustaining development, the recycled concrete that is made from recycled concrete aggregates could be a perfect solution to resource and environment preservation. Its thermal mechanical properties are different from other concretes as a result of different property of the aggregate of recycled concrete and other concrete. However, little research has been done under high temperatures. The

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Yuan, Min, Sheng Qiang, Yingli Xu, Yu Li, and Wenqiang Xu. "Research on Cracking Mechanism of Early-Age Restrained Concrete under High-Temperature and Low-Humidity Environment." Materials 14, no. 15 (2021): 4084. http://dx.doi.org/10.3390/ma14154084.

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How to prevent the cracking of tunnel lining concrete under a high-temperature and low-humidity environment has gradually become a challenge faced by the engineering community. Actually, the concrete structure will be restrained, which easily leads to cracking. Aiming at this problem, a self-restraint device of concrete specimens was designed in this paper, which aims to more realistically simulate the restrained state of concrete structures during construction. SEM, EDS and XRD detection methods were used to study the macroscopic and microscopic properties of an early-age restrained concrete

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Han, Juhong, Dunbin Wang, and Peng Zhang. "Effect of nano and micro conductive materials on conductive properties of carbon fiber reinforced concrete." Nanotechnology Reviews 9, no. 1 (2020): 445–54. http://dx.doi.org/10.1515/ntrev-2020-0034.

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AbstractIn this study, the pressure sensitivity and temperature sensitivity of the diphasic electric conduction concrete were investigated by measuring the resistivity using the four-electrode method. The diphasic electric conduction concrete was obtained by mixing nano and micro conductive materials (carbon nanofibers, nano carbon black and steel slag powder) into the carbon fiber reinforced concrete (CFRC). The results indicated that, with the increase of conduction time, the resistivity of CFRC decreased slightly at the initial stage and then became steady, while the resistivity of CFRC con

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Zhao, Juan. "The Chloride Ion Penetration Model Coupled with Temperature and Moisture Transfer in Marine Environment." Advanced Materials Research 591-593 (November 2012): 2422–27. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.2422.

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Considering the complexity of the chloride ion penetration in concrete exposed to marine environment, an integrated chloride penetration model coupled with temperature and moisture transfer is proposed. The governing equations and parameters embody fully the cross-impacts among thermal conduction, moisture transfer and chloride ion penetration. Furthermore, the four exposure conditions are classified based on the different contact with the aggressive marine environment, and then the micro-climate condition on the concrete surface is investigated according to the regional climate characteristic

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Mou, Ting Min, Xiao Jun Zhou, Bi Kun Fan, and Qing Jun Ding. "Frost Resistance of Steel Fiber Reinforced Micro-Expansive Concrete Filled Steel Tube." Applied Mechanics and Materials 204-208 (October 2012): 3956–60. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3956.

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Abstract. This investigation was done based on the concrete filled steel tube (CFST) winter construction of Ganhaizi Bridge. Steel fiber reinforced micro-expansive concrete (SREC) with high frost-resistance ability, excellent fluidity and good self-compacting ability was prepared. Strength development mode under low temperature was illustrated. Scanning electron microscope (SEM) was used to analyze the morphology features of hydration products at the age of 28 days. It was confirmed that when the content of sodium nitrite was 0.4%, SREC did not frost under -5°C. In addition, SEM showed that et

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9

Zhang, Hui, Ren Shu Yang, Ling Zhao, and Hui Cao. "Mechanism of High-strength Concrete Damage Evolution Based on CT Observation." Advanced Materials Research 168-170 (December 2010): 498–504. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.498.

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To study damage evolution of high-strength concrete under the frozen environment, based on the background of YunCheng auxiliary shaft engineering, this paper studies the damage pattern of C100 concrete under loading by applying the method of industry CT scanning. It aims at showing the evolution process of concrete damage by contrasting of the damage factor on standard curing and negative temperature curing condition, which analyzes the trend of damage modulus of elasticity of C100 high-strength concrete uniaxial compression conditioned from the micro level, combining change of fractal dimensi

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Halúzová, Dušana. "Thermal Response Of An Aerated Concrete Wall With Micro-Encapsulated Phase Change Material." Slovak Journal of Civil Engineering 23, no. 2 (2015): 19–22. http://dx.doi.org/10.1515/sjce-2015-0008.

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Abstract For many years Phase Change Materials (PCM) have attracted attention due to their ability to store large amounts of thermal energy. This property makes them a candidate for the use of passive heat storage. In many applications, they are used to avoid the overheating of the temperature of an indoor environment. This paper describes the behavior of phase change materials that are inbuilt in aerated concrete blocks. Two building samples of an aerated concrete wall were measured in laboratory equipment called “twin-boxes”. The first box consists of a traditional aerated concrete wall; the

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11

Qian, Yunfeng, Dingyi Yang, Yanghao Xia, Han Gao, and Zhiming Ma. "Transport Properties and Resistance Improvement of Ultra-High Performance Concrete (UHPC) after Exposure to Elevated Temperatures." Buildings 11, no. 9 (2021): 416. http://dx.doi.org/10.3390/buildings11090416.

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Ultra-high performance concrete (UHPC) has a high self-healing capacity and is prone to bursting after exposure to high temperatures due to its characteristics. This work evaluates the damage and improvement of UHPC with coarse aggregates through mechanical properties (compressive strength and ultrasonic pulse velocity), transport properties (water absorption and a chloride diffusion test), and micro-properties such as X-ray diffraction (XRD), Mercury intrusion porosimetry (MIP), and Scanning electronic microscopy (SEM). The result demonstrates that polypropylene (PP) fibers are more suitable

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12

Sarsam, Saad Issa. "Implication of Nondestructive Test NDT for Evaluation of Crack Healing in Asphalt Concret." Civil Engineering Beyond Limits 2, no. 1 (2020): 1–5. http://dx.doi.org/10.36937/cebel.2021.001.001.

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Asphalt concrete practices heavy loading and environmental impacts through the service life of the pavement. Micro cracks usually initiate and accumulate to form various types of distresses. However, asphalt concrete has the ability of self-healing under rest period and environment conditioning. Asphalt concrete is a composite material consisting of aggregates, bitumen, and air voids. Its mechanical behavior is complex due to its dependency of temperature, loading frequency, and strain level. In this investigation, asphalt concrete specimens of wearing course have been prepared in the laborato

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13

Saad, Issa Sarsam. "Sensitivity of the Fatigue Life of Asphalt Concrete to Testing Variables." Journal of Transportation Engineering and Traffic Management 3, no. 1 (2022): 1–10. https://doi.org/10.5281/zenodo.5863433.

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The serviceability of flexible pavement is related to the fatigue life of asphalt concrete mixture. However, the loading, environment, ageing can influence the fatigue life. In the present investigation, asphalt concrete slab samples were prepared using laboratory roller compaction, beam specimens were extracted from the slab samples and tested under repeated flexural stresses. The beam specimens of 400 mm length and 50 mm height and 63 mm width were extracted from the slab samples. The beam specimens were subjected to the four-point repeated flexural bending beam test. Fatigue life of asphalt

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14

Zhang, Feng Chen, Yong Hao Fang, De Jian Shen, and Ji Kai Zhou. "Risk Assessment and Diagnostic Method of Sulfate Attack of Cement-Based Material." Applied Mechanics and Materials 174-177 (May 2012): 121–26. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.121.

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It is very difficult to evaluate risk of sulfate attack and diagnose the form of sulfate attack of cement mortar and concrete because of the diversity of attack form and complexity of erosion phases during sulfate attack, which affect repair of concrete component damaged by sulfate attack mostly. From the sulfate ions, ambient temperature and humidity of service environment as well as local climate characteristics, key components of building structures suffered great risk of sulfate attack should be inspected well and master the property of cement-based material, and then evaluate the risk of

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15

Saad, Issa Sarsam. "Influence of Self-Healing Behavior on the Viscoelastic Properties of Asphalt Concrete." Journal of Advances in Civil Engineering and Management 7, no. 3 (2024): 19–28. https://doi.org/10.5281/zenodo.13766835.

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<em>The environmental impact and vehicular load repetitions on asphalt concrete pavement exhibits negative influence on its service life. It is known that the asphalt concrete exhibit Self-healing behavior when practicing hot environment or rest period. In the present work, the influence of self-healing behavior on viscoelastic properties of asphalt concrete in terms of the variations in the cumulative dissipated energy and the phase angle after practicing the self-healing process was assessed.</em><em> </em><em>Asphalt concrete slab sample of (40 x 30 x 6) cm was prepared in the laboratory wi

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16

KOTRESH PRASAD CHIKKAGOUDARA, PAWAN SINGH, DEEPANDITA BARMAN, et al. "Eye temperature, an indicator for stress levels in young buffalo bulls – A case study of micro-environment modification." Journal of Agrometeorology 22, no. 3 (2021): 266–73. http://dx.doi.org/10.54386/jam.v22i3.188.

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The present study was undertaken with an objective to determine diurnal changes of the eye temperature of buffalo young bulls under different shelter management to determine the effect of heat stress. Twenty four buffalo bulls were randomly divided into two groups, each group comprising of 12 animals based on age (16–18 months) and body weight (Control = 301 ± 8.24 kg and Treatment = 311.45 ± 6.24 kg). The control group was housed under normal management practices followed, and the height of the shed was 10 ft. and width was 12 ft. with concrete floor. Whereas, the treatment group was housed i

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17

Lee, Nankyoung, Yeonung Jeong, Hyunuk Kang, and Juhyuk Moon. "Heat-Induced Acceleration of Pozzolanic Reaction Under Restrained Conditions and Consequent Structural Modification." Materials 13, no. 13 (2020): 2950. http://dx.doi.org/10.3390/ma13132950.

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This study investigated the heat-induced acceleration of cement hydration and pozzolanic reaction focusing on mechanical performance and structural modification at the meso- and micro-scale. The pozzolanic reaction was implemented by substituting 20 wt.% of cement with silica fume, considered the typical dosage of silica fume in ultra-high performance concrete. By actively consuming a limited amount of water and outer-formed portlandite on the unreacted cement grains, it was confirmed that high-temperature curing greatly enhances the pozzolanic reaction when compared with cement hydration unde

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Saad, Issa Sarsam. "Thermal performance of Asphalt Concrete Mixtures." Journal of Engineering Analysis and Design 6, no. 2 (2024): 27–34. https://doi.org/10.5281/zenodo.12754274.

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<em>Asphalt concrete pavement practices environmental impact throughout its service life. Such variation in the environmental conditions can influence the performance of the pavement. In the present investigation, asphalt concrete wearing course mixture was assessed through this investigation. Samples of asphalt concrete slabs were compacted using the laboratory roller compaction and prepared with the highest possible binder content. Pillar examples were removed from the chunk tests and exposed to dynamic flexural stresses under three consistent miniature strain levels of (750, 400, and 250).

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Krishnamoorthy, C., and Mrs S. Narmadha. "Strength and Durability Assessment of Bacteria Based Self-Healing Concrete." International Journal for Research in Applied Science and Engineering Technology 11, no. 10 (2023): 231–36. http://dx.doi.org/10.22214/ijraset.2023.55968.

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Abstract: Crack formation is very common phenomenon in concrete structure which allows the water and different type of chemical into the concrete through the cracks and decreases their durability, strength and which also affect the reinforcement when it comes in contact with water, CO2 and other chemicals. For repairing the cracks developed in the concrete, it requires regular maintenance and special type of treatment which will be very expensive. So, to overcome from this problem autonomous self-healing mechanism is introduced in the concrete which helps to repair the cracks by producing calc

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Canbaz, Mehmet, Mouad Bensaoud, Hakan Erol, and H. Selim Şengel. "Effect of carbon fibers on the mechanical properties of steam-cured concrete." Challenge Journal of Structural Mechanics 8, no. 2 (2022): 38. http://dx.doi.org/10.20528/cjsmec.2022.02.001.

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While the use of the steam-curing method in the precast concrete can result in an early high compressive strength and thus can increase the production rate of structural elements, it should be noted that the steam-curing method has some negative effects on the mechanical properties of concrete due to the fact that the high-temperature steam causes micro-cracks. On the other hand, the inclusion of carbon fibers enhanced the overall mechanical properties in terms of high tensile strength and modulus of elasticity. This paper aimed to investigate the effect of adding carbon fibers to steam-cured

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21

Fan, Tao, Yongchang Wu, Mingda Yang, et al. "Attenuation Law of Performance of Concrete Anti-Corrosion Coating under Long-Term Salt Corrosion." Coatings 14, no. 10 (2024): 1249. http://dx.doi.org/10.3390/coatings14101249.

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In saline soil areas, the concrete piers of concrete bridges experience long-term corrosion, mainly caused by chloride salts due to alternating temperature changes. Waterborne concrete coatings are prone to failure in this aggressive salt environment. Implementing coating protection measures can improve the durability of concrete and enhance the service life of bridges. However, the effectiveness and longevity of coatings need further research. In this paper, three types of waterborne concrete anti-corrosion coatings were applied to analyze the macro and micro surface morphology under wet–dry

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Sawant, Rohan, Deepa A. Joshi, and Radhika Menon. "Investigation on Key Factors Affecting Strength of Fiber Reinforced Self-Compacting Geopolymer Precast Concrete using SPSS." E3S Web of Conferences 596 (2024): 01008. http://dx.doi.org/10.1051/e3sconf/202459601008.

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Ordinary Portland Cement (OPC) is a major source of CO2 emissions in the environment. Recent micro- and macro-behavioural research has focused on geopolymer concrete (GPC), an innovative alternative to traditional Portland cement concrete. Geopolymers, a cement-based alternative, can serve as a substitute for OPC composites. Geopolymer composites (GC) are more energy-efficient and environmentally friendly than organic polymer composites. The structural features and qualities of reinforced concrete (RC) are very relevant to the building sector. A variety of factors, including the binder materia

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Damodaran, Pooja, Lakshmi Thangasamy, and Jaganathan Venugopal. "Evaluating the Properties of Self-healing Concrete: A Review." MATEC Web of Conferences 384 (2023): 02001. http://dx.doi.org/10.1051/matecconf/202338402001.

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The development of cracks is a regular phenomenon that causes water and various chemicals to seep into the structure reducing the strength and longevity of the building. The intrusion of external materials might affect the reinforcements when exposed to moisture and CO2 exposure, degrading the structure. Regular maintenance and treatments are needed to fix the cracks and maintain the structure. Research is in progress identifying solutions to these issues with active and self-processes in concrete which aids in repairing the cracks by generating calcium carbonate (CaCO3) particles which could

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Harp, Derald A., and Edward L. McWilliams. "The Influence of Vegetation on UHIs, MUHIs, and Microclimate of Selected Southern Cities." HortScience 32, no. 3 (1997): 509A—509. http://dx.doi.org/10.21273/hortsci.32.3.509a.

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Urban areas have average annual temperatures 2–3°C warmer than surrounding rural areas, with daily differences of 5–6°C common. A suggested reason for this temperature difference is the extensive use of concrete, asphalt, and other building materials in the urban environment. Vegetation can moderate these temperatures by intercepting incoming radiation. The influence of vegetation patterns on the magnitude of urban and micro-urban “heat islands” (UHI and MUHI, respectively) is compared for several cities including Houston, Austin, College Station, and Ft. Worth, Texas; Huntsville, Ala.; and Ga

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Murashkin, Vasily G. "Features of Nonlinear Deformation of Concrete." Scientific journal “ACADEMIA. ARCHITECTURE AND CONSTRUCTION”, no. 1 (March 18, 2019): 128–32. http://dx.doi.org/10.22337/2077-9038-2019-1-128-132.

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In most studies, when the problem of determining a nonlinear model of deformation of structural concrete in normal environment, or experienced a variety of destructive (aggressive, temperature, etc.) exposure, using individual mathematical apparatus and software. The main criterion in these works for the construction of the deformation model of concrete was a unique relationship "strength - modulus of elasticity". Apply the developed model for another type of concrete or experienced a destructive impact was erroneous. However, not all features of concrete deformation in the construction of mod

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Sundravel, K. Vijaya, S. Ramesh, and D. Jegatheeswaran. "Design and formulation of microbially induced self-healing concrete for building structure strength enhancement." Materials Express 11, no. 11 (2021): 1753–65. http://dx.doi.org/10.1166/mex.2021.2104.

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Self-healing concrete is described as the capability of material to repair their cracks independently. Cracks in concrete are well-known circumstance because of their short tensile strength. Many researchers carried out their research on self-healing concrete using different classification and clustering methods. But the temperature variation and pH variation were not minimized. In order to address these problems, a Multivariate Logistic Regressed Chi-Square Deep Recurrent Neural Network based Self-Healing (MLRCSDRNN-SH) Method is introduced. The main aim of MLRCSDRNN-SH method is to improve b

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Zhao, Younan, Laifa Wang, Yongqing Li, Rui Xiong, and Fuyang Lu. "Preparation and Properties of Attapulgite-Hydroxyethyl Cellulose Composite Poly (Acrylic Acid-co-2-acrylamide-2-methylpropanesulfonic Acid) Concrete Internal Curing Material." Buildings 14, no. 5 (2024): 1467. http://dx.doi.org/10.3390/buildings14051467.

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Attapulgite-hydroxyethyl cellulose-poly (acrylic acid-co-2-acrylamide-2-methylpropanesulfonic acid) (ATP-HEC-P(AA-co-AMPS)) in-concrete curing material was synthesized by aqueous solution polymerization using attapulgite (ATP) as an inorganic filler and hydroxyethyl cellulose (HEC) as a backbone. The effects of relevant factors such as ATP dosage, HEC dosage, degree of neutralization, initiator quality, and cross-linking agent quality on the water absorption characteristics of ATP-HEC-P (AA-co-AMPS) were investigated through expansion tests. The micro-morphology of ATP-HEC-P (AA-co-AMPS) was a

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Foray, G., S. Cardinal, A. Malchere, and J. M. Pelletier. "Mechanical Spectroscopy, a Tool to Characterize Cement Latex Composites." Solid State Phenomena 184 (January 2012): 399–404. http://dx.doi.org/10.4028/www.scientific.net/ssp.184.399.

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Fair dispersion of polymer and control of component grain size are key properties to achieve high performances building material (i.e. ultra high strength concrete, self-levelling floor, or exterior insulation composite system). As microstructure analysis in an organic/inorganic hydrated co-matrix material is time consuming, mechanical spectroscopy temperature analysis could characterise both the polymer and the hydrates in the same run. The temperature dependence of the storage modulusG’and the loss modulus G’’ of some composite building material was therefore measured between 173 and 470 K b

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Li, Fuhai, Shaoxuan Fan, Chang Cai, et al. "Comprehensive research of the durability, bending deterioration and micro properties of lining concrete in an environment with bending stress–chloride salt–large temperature difference coupling." Construction and Building Materials 439 (August 2024): 137337. http://dx.doi.org/10.1016/j.conbuildmat.2024.137337.

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Borsare, Suraj V. "Replacement of Sand by Quarry Dust in Concrete." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 1043–45. http://dx.doi.org/10.22214/ijraset.2021.35075.

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The role of quarry dust in the construction of building and other structures to eliminate the demand of nature sand by using quarry waste to replace the use of natural sand. We are investigating the potential of using quarry waste and its effect on the strength and workability of concrete. Initially cement concrete cube was studied with various proportion of cement concrete +quarry dust (M20 & M25). The experimental result showed that the additional of quarry dust as fine aggregate ratio of 30%, 40% and 50% was found to enhance the compressive properties. The compressive strength of concre

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Yadykina, V. V., S. N. Navolokina, and A. M. Gridchin. "Water- and frost-resistance of crushed stone mastic asphalt concrete prepared on sevilen-modified bitumen." Russian Automobile and Highway Industry Journal 19, no. 1 (2022): 102–13. http://dx.doi.org/10.26518/2071-7296-2022-19-1-102-113.

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Introduction. Currently, increasing the durability of road asphalt concrete pavements is one of the urgent issues, the solution of which provides a significant economic effect achieved by increasing the turnaround time, as well as the overall service life of highways. Asphalt concrete pavements with prolonged wetting due to weakening of structural bonds can be destroyed due to crumbling of mineral grains, which leads to increased wear of the pavement and the formation of potholes. Water penetrates into micro defects in the structure of asphalt concrete, leading to a decrease in the strength of

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Gong, Shunmei, Songbao Feng, Shiquan Wang, et al. "Research on strength and microscopic characteristics of lime-activated fly ash-slag solidified sludge under high temperature effect." PLOS ONE 19, no. 6 (2024): e0305761. http://dx.doi.org/10.1371/journal.pone.0305761.

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To explore the reaction mechanism of sludge, slag, lime, and fly ash in high temperature environments, the unconfined compressive strength (UCS) test was hereby implemented to study the effect on curing age, curing temperature, slag content and fly ash content about the strength of sludge. Scanning electron microscopy (SEM) was used to observe the microscopic composition of the substance, and X-ray diffraction (XRD) was used to analyze the mineral composition at the micro level to further disclose its reinforcement mechanism. The experimental results demonstrate the difference in the strength

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Wang, Jun, Bei Huang, Zhongyang Mao, and Yu Wang. "Study on Adsorption Properties of Calcined Mg–Al Hydrotalcite for Sulfate Ion and Chloride Ion in Cement Paste." Materials 14, no. 4 (2021): 994. http://dx.doi.org/10.3390/ma14040994.

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In the marine environment, sulfate ions and chloride ions are abundant. Therefore, sulfate attack and chloride ion attack are common failure forms of marine concrete. Mg–Al hydrotalcite is a layered bimetallic hydroxide, which can be used as guest molecular adsorbent. In this experiment, we synthesized Mg–Al hydrotalcite, and the crystal state, surface morphology, and composition of this adsorbent were investigated by modern micro-analysis technology. Mg–Al hydrotalcite was added into the prepared target ion solution, to explore the influence of various factors on the adsorption performance of

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Peng, Zhan, Anji Wang, Chen Wang, and Chenggao Li. "Preparation of Glass Fiber Reinforced Polypropylene Bending Plate and Its Long-Term Performance Exposed in Alkaline Solution Environment." Polymers 17, no. 13 (2025): 1844. https://doi.org/10.3390/polym17131844.

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Glass fiber reinforced polypropylene composite plates have gradually attracted more attention because of their repeated molding, higher toughness, higher durability, and fatigue resistance compared to glass fiber reinforced thermosetting composites. In practical engineering applications, composite plates have to undergo bending effect at different angles in corrosive environment of concrete, including bending bars from 0~90°, and stirrups of 90°, which may lead to long-term performance degradation. Therefore, it is important to evaluate the long-term performance of glass fiber reinforced polyp

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Kishanrao, Suresh. "Rights against the Adverse Effects of Climate Change! Who & How to Ensure? -Not Only National Governments!" Journal of Quality in Health Care & Economics 7, no. 3 (2024): 1–13. http://dx.doi.org/10.23880/jqhe-16000387.

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In 2022, the United Nations General Assembly declared that access to a clean, healthy and sustainable environment is a universal human right. The Supreme Court of India has recently in a judgment, a significant step towards acknowledging the impact of climate change on human life, has said that the "right against the adverse effects of climate change" falls under the scope of Articles 14 and 21, which guarantee rights to equality and life and country must take action to mitigate it. Focusing on the mean surface air temperature offers a reliable way to compare the relentless heat affecting both

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Tang, Ruifeng, Dawei Sun, Zhaojia Wang, et al. "Synergistic Effect and Mechanism of Nano-C-S-H Seed and Calcium Sulfoaluminate Cement on the Early Mechanical Properties of Portland Cement." Materials 16, no. 4 (2023): 1575. http://dx.doi.org/10.3390/ma16041575.

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The combined utilization of mineral accelerators and nano-seeding materials is a novel method to promote the early strength of cement-based materials. In this paper, the effects of nano-C-S-H seed (NCS) on the early compressive strength of the Portland cement (PC)– calcium sulfoaluminate cement (CSA) binder were investigated. The results showed that NCS and CSA synergistically contributed to the early strength of PC. In detail, a 326.3% increase in the 10 h compressive strength of PC paste was obtained through the addition of NCS (2 wt%) and CSA (5%) in common. This was higher than the sum of

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Andry, Harinaina Rabearisoa, Victoire Nasolomampionona Ravo, Manjolongo Bertrand, et al. "ÉVALUATION DES RISQUES SANITAIRES LIES A LA QUALITE DE L'EAU DE PLUIE STOCKEE DANS UNE CITERNE EN BETON : ETUDE DE CAS A IVORY AVARATRA, FIANARANTSOA, MADAGASCAR." Am. J. innov. res. appl. sci. 17, no. 4 (2023): 233–40. https://doi.org/10.5281/zenodo.8416718.

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<strong>RÉSUMÉ</strong>   <strong>Introduction</strong> : La croissance démographique exponentielle accentue le besoin croissant en eau, malgré le fait que seulement 3% de l'eau sur terre est douce. Dans ce contexte, la collecte d'eau de pluie est devenue une pratique répandue à l'échelle mondiale. Toutefois, les eaux de pluie recueillies pendant les périodes pluviales posent des défis en raison de la possibilité de contamination par des polluants provenant des toitures, tels que débris, vég&ea

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Pradipta, Eka. "Correlation between Trees and Micro Climate on A Certified Green Building (Case Study in Wisma Subiyanto, Jakarta)." E3S Web of Conferences 67 (2018): 04014. http://dx.doi.org/10.1051/e3sconf/20186704014.

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Construction of buildings causes vegetation, trees, and soil to change into concrete (building) and asphalt (road) and impact on the increase of radiation heat in the surrounding environment. Trees absorb heat energy, can decrease the environmental temperature through shade canopy and evapotranspiration process. The process of reducing the temperature becomes a necessity in an urban area with a hot humid climate filled with buildings like the city of Jakarta. This paper discusses the results of research that aims to determine how effective the role of trees in lowering the ambient temperature

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Guo, Kaiwen, Shiping Guo, Xingji Chen, and Qianlong Qi. "Mechanical and Hygrothermal Properties of Zeolite-Modified Pervious Concrete in Hot and Humid Area." Sustainability 15, no. 3 (2023): 2092. http://dx.doi.org/10.3390/su15032092.

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Pervious concrete has good permeability and moisture adjustment properties due to its rich pore structure. It can not only reduce surface runoff by infiltration of rainfall, but also retain a certain amount of water inside, and then decrease the surface temperature via evaporation. In order to optimize the evaporative cooling performance of pervious concrete, this study introduces a modified method of incorporating superabsorbent zeolite produced from industrial wastes into pervious concrete as hygroscopic filler. The effects of zeolite dosages on the basic physical and mechanical properties o

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Saravanakumar, R., K. S. Elango, V. Revathi, and D. Balaji. "Influence of Aggressive Environment in Macro and Microstructural Properties of Bottom Ash Geopolymer Concrete." Sustainability 16, no. 5 (2024): 1732. http://dx.doi.org/10.3390/su16051732.

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India generates 759.02 million metric tons of coal ash annually. Part of that quantity is successfully utilized, and the remaining portion of the ash is discarded into a landfill. There also is a need to address pollution. Cement industries are responsible for 7% of global warming. Cement has been replaced entirely by thermal power plant waste, and bottom ash is used as a binder to overcome those issues. A few researchers have carried out strength characterization, but an extensive study needs to be carried out under different environmental exposures. Therefore, the present study investigated

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Suleiman, Ahmed R., Lei V. Zhang, and Moncef L. Nehdi. "Quantifying Crack Self-Healing in Concrete with Superabsorbent Polymers under Varying Temperature and Relative Humidity." Sustainability 13, no. 24 (2021): 13999. http://dx.doi.org/10.3390/su132413999.

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During their service life, concrete structures are subjected to combined fluctuations of temperature and relative humidity, which can influence their durability and service life performance. Self-healing has in recent years attracted great interest to mitigate the effects of such environmental exposure on concrete structures. Several studies have explored the autogenous crack self-healing in concrete incorporating superabsorbent polymers (SAPs) and exposed to different environments. However, none of the published studies to date has investigated the self-healing in concrete incorporating SAPs

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Terzic, Anja, Marina Dojcinovic, Ljiljana Milicic, Jovica Stojanovic, and Zagorka Radojevic. "Cavitation properties of rendering mortars with micro silica addition." Science of Sintering 53, no. 4 (2021): 445–59. http://dx.doi.org/10.2298/sos2104445t.

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Micro-silica is a highly efficient mineral additive whose role is reflected in improvements of microstructure packing, strength and durability of non-shaped composite building materials such as concrete and mortar. A comparative study of performances of rendering mortars with different quantities of micro silica was conducted. The experimental program included production of reference mortar based on Portland cement and quartz sand (CM) and three mortars with 5, 10, and 15 % addition of micro silica (SCM-5, SCM-10, and SCM-15). The effect that micro silica addition has on the thermal behavior a

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Jin, Jinzhao, Yongzhe Miao, Huaiwu Zhao, et al. "Study on the Self-Healing Performance of Microcapsules and Microcapsule-Containing Asphalt." Sustainability 14, no. 19 (2022): 12231. http://dx.doi.org/10.3390/su141912231.

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Mixing microcapsules encapsulating asphalt recycling agents into asphalt can effectively enhance its self-healing performance and alleviate the brittle cracking of pavements due to asphalt aging. In practical engineering applications, microcapsules should have good thermal stability, mechanical properties, and uniform dispersion in asphalt or asphalt concrete, for the effective self-healing of micro-cracks which occur as pavements age. The self-healing performance of microcapsule-containing asphalt is affected by several factors. First, the thermal stability, mechanical properties, and dispers

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Elmahdy, Hager, Ahmed M. Tahwia, Islam Elmasoudi, and Osama Youssf. "Mechanical and Thermal Properties of Sustainable Low-Heat High-Performance Concrete." Sustainability 15, no. 23 (2023): 16139. http://dx.doi.org/10.3390/su152316139.

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One of the main drawbacks of utilizing mass concrete is the high amount of heat produced during the hydration of cementitious materials. Low-heat high-performance concrete (LHHPC) is a special type of concrete with low Portland cement content and low heat of hydration. The main aim of this research is to experimentally explore the potential use of blast furnace cement (CEM III) and fly ash (FA) in LHHPC. CEM III is a type of cement with low heat of hydration. FA was used at various dosages, namely 10%, 20%, 30%, and 40%, as a partial replacement of CEM III for producing more sustainable LHHPC.

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Ziaeemehr, Bahador, Zahra Jandaghian, Hua Ge, Michael Lacasse, and Travis Moore. "Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review." Buildings 13, no. 11 (2023): 2868. http://dx.doi.org/10.3390/buildings13112868.

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The Urban Heat Island (UHI), a consequence of urban development, leads to elevated temperatures within cities compared to their rural counterparts. This phenomenon results from factors such as urban designs, anthropogenic heat emissions, and materials that absorb and retain solar radiation in the built environment. Materials commonly used in cities, like concrete, asphalt, and stone, capture solar energy and subsequently emit it as heat into the surroundings. Consequently, this phenomenon amplifies summertime cooling energy demands in buildings. To mitigate the UHI impacts, various mitigation

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Mekonnin, Abdisa Sisay, and Krzysztof Wacławiak. "INVESTIGATION OF MATERIAL PROPERTIES UNDER CRYOGENIC CONDITIONS: A REVIEW." Scientific Papers of Silesian University of Technology Organization and Management Series 2025, no. 216 (2025): 343–65. https://doi.org/10.29119/1641-3466.2025.216.22.

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Purpose: The purpose of this work is to analyses the behavior and mechanical properties of metals, alloys, polymers, concrete, and composites of various materials at low and cryogenic temperatures below 123 K (-150.15°C). This review paper highlights the influence of cryogenic conditions upon material selection and design for applications where critical service conditions require exposure to extreme cold, including energy storage, aerospace, offshore structures, superconducting technologies, shipbuilding, and LNG carriers. Design/methodology/approach: This review attempts to synthesize results

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Lu, Cai-feng, Wei Wang, Jian-hua Jiang, and Ming Hao. "Micro-environment temperature and relative humidity response of fly ash concrete under natural climatic conditions." Advances in Cement Research, March 20, 2017, 1–10. http://dx.doi.org/10.1680/jadcr.16.00040.

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Song, Hang, Dai Wang, and Wei-Jia Liu. "Research on Construction Risks and Countermeasures of Concrete Dam." International Journal of Concrete Structures and Materials 16, no. 1 (2022). http://dx.doi.org/10.1186/s40069-022-00501-3.

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AbstractThe harsh environment will reduce the interlayer bonding quality of mass concrete and cause plastic cracking. These defects will seriously affect the safety and durability of the structure. This study tested the layer state (water content and penetration resistance), interlayer mechanical properties, and early-age crack resistance of concrete to evaluate the impact of extreme weather on concrete interlayer properties and crack resistance. Furthermore, the interlayer splitting tensile strength of concrete under different treatment measures (covering insulation quilts and artificial groo

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Rahman, Sherin Khadeeja, and Riyadh Al-Ameri. "Long-term performance of Basalt FRP reinforced marine geopolymer concrete in harsh environment." Magazine of Concrete Research, May 31, 2023, 1–53. http://dx.doi.org/10.1680/jmacr.23.00035.

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The current study reports on the long-term structural performance of novel reinforced marine geopolymer concrete beams under accelerated weathering conditions. The study covers the flexural performance of 40 geopolymer concrete beams reinforced with BFRP (Basalt Fibre Reinforced Polymer) bars, including 12 beams under sustained loading when exposed to 3, 6 and 12 months of accelerated marine environment consisting of tidal cycles of seawater at a temperature of 50°C. The experimental results revealed that the novel marine geopolymer concrete reinforced with BFRP bars reported minimal micro and

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Deb, Robin, Mohammad Irfan Iqbal, and Yaghoob Farnam. "Evaluating long-term thermal and chemical stability and leaching potential of low-temperature phase change materials in concrete slabs exposed to outdoor environmental conditions." Materials and Structures 58, no. 1 (2024). https://doi.org/10.1617/s11527-024-02545-1.

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AbstractThis study examined the potential of using phase change material (PCM)-integrated concrete slabs for long-term thermal-responsive applications in an outdoor environment condition. The objectives were to: (i) evaluate long-term thermal response, snow melting and freeze–thaw reduction efficiency of PCM integrated concrete slabs, (ii) characterize the chemical stability of PCM in cement matrix, and (ii) assess the possibility of PCM leaching into the cement matrix and subgrade soil of the slabs. The experimental program included: (i) outdoor experimentation using large-scale field concret

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