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Journal articles on the topic 'Mechanical properties of concrete'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Shu, Xing Wang, and Ying Zhang. "Mechanical Properties of Modified Epoxy/Rubber Concrete." Materials Science Forum 859 (May 2016): 39–44. http://dx.doi.org/10.4028/www.scientific.net/msf.859.39.

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To research the effect of a elastic modifier on the mechanical properties of epoxy/rubber concrete, series of epoxy/rubber concretes were prepared with different elastic modifier content, the relationship between elastic modifier content and stress-strain curve of epoxy/rubber concretes were investigated. Results show: as the increase of elastic modifier content, both the compressive and bending stress-strain curves of epoxy/rubber concretes experience a stage transition of elastic-elastoplasticity-plastic apparently; the slope in the rising and falling section of stress-strain curves are gradually decreased; the peak stress decrease while the corresponding strain and stain energy increase. Content of elastic modifier between 40pbw and 60 pbw is proposed in order to attain better properties of epoxy/rubber concrete. Compared with ordinary concrete and rubberized concrete, Improved epoxy/rubber concrete has better comprehensive mechanical properties and larger rubber content.

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2

Shaikh, Faiz. "Mechanical and Durability Properties of Green Star Concretes." Buildings 8, no. 8 (August 17, 2018): 111. http://dx.doi.org/10.3390/buildings8080111.

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This paper presents mechanical and durability properties of green star concretes. Four series of concretes are considered. The first series is control concrete containing 100% ordinary Portland cement, 100% natural aggregates and fresh water. The other three series of concretes are green star concretes according to Green Building Council Australia (GBCA), which contain blast furnace slag, recycled coarse aggregates and concrete wash water. In all above concretes compressive strength, indirect tensile strength, elastic modulus, water absorption, sorptivity and chloride permeability are measured at 7 and 28 days. Results show that mechanical properties of green star concretes are lower than the control concrete at both ages with significant improvement at 28 days. Similar results are also observed in water absorption, sorptivity and chloride permeability where all measured durability properties are lower in green star concretes compared to control concrete except the higher water absorption in some green star concretes.

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3

Dr.T.Ch.Madhavi, Dr T. Ch Madhavi, Pavithra P. Pavithra.P, Sushmita Baban Singh Sushmita Baban Singh, S. B. Vamsi Raj S.B.Vamsi Raj, and Surajit Paul. "Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete." International Journal of Scientific Research 2, no. 6 (June 1, 2012): 166–68. http://dx.doi.org/10.15373/22778179/june2013/53.

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4

Balasubramanian, M., Senthil Selvan.S, and Vinod Panwar.D. "Augmentation of Mechanical Properties of Sisal Fiber Concrete." International Journal of Engineering & Technology 7, no. 2.12 (April 3, 2018): 430. http://dx.doi.org/10.14419/ijet.v7i2.12.11511.

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The properties of sisal fiber concrete were examined in this investigation. To find out the mechanical properties such as compressive strength, flexural strength, tensile strength was carried out for the control concretes. The similar mix proportion which was utilized to cast control concrete was used to cast sisal fiber concrete were considered and evaluated with the theoretical values as recommended by IS 456 and BS 8110 standards. For comparison, both conventional and SF concrete have been considered to study. The mix design for M20, M30 and M40 grade of concrete was finished with four distinct proportions of control concrete in trail and error method as per IS10262 – 2009. Four distinctive aspect ratios, four distinctive dosages of fiber were added to the concrete mix to find out the optimum quantity of fiber and aspect ratio. Mix batches of concrete containing 0.5%, 1%, 1.5%, 2% dosage of fiber in the aspect ratio of 100, 200, 300 and 400 were cast. This study proves that the mechanical and bond properties of both SF concrete and conventional concrete as well.

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5

Grinys, Audrius, Danutė Vaičiukynienė, Algirdas Augonis, Henrikas Sivilevičius, and Rėda Bistrickait. "EFFECT OF MILLED ELECTRICAL CABLE WASTE ON MECHANICAL PROPERTIES OF CONCRETE." Journal of Civil Engineering and Management 21, no. 3 (February 26, 2015): 300–307. http://dx.doi.org/10.3846/13923730.2015.1005019.

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The article focuses on investigation of mechanical and fracture properties of concrete containing electrical cable waste as well as some microstructural features of such concrete. Added to concrete, electrical cable waste reduces the overall concrete bulk density. Compressive, flexural, tensile splitting strengths and elastic modulus decreased when electrical cable waste was admixed to conventional and polymer modified concretes. The best mechanical properties of concrete samples containing electrical cable waste were identified in polymer modified concrete containing 5% of electrical cable waste. Electrical cable waste particles increase the deformability of polymer modified concretes and have almost no influence on normal concrete. Consequently, the optimal amount of electrical cable waste particles can provide concrete with desirable strength that is required for different applications.

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6

Yang, Shu Qing, Ting Peng, Wai Ching Tang, and Hong Zhi Cui. "Study of Surface Modification of Recycled Aggregate and Mechanical Properties of the Resulting Concrete." Advanced Materials Research 712-715 (June 2013): 961–65. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.961.

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In this paper, a method of aggregate surface modification using cement paste with RLP (Redispersable Latex Powder) was proposed aiming to improve properties of recycled aggregates and the resulting concrete. In this study, the cement pastes with different dosages of RLP on RA surface modification were used and the effects on the mechanical properties of the resulting concretes were studied. The experiments were carried in accordance with specifications and test methods in Building pebble and gravel (GB/T 14685-2001) and Ordinary concrete mechanics performance test method standard (GB/T 50081-2002). The test results showed that the properties of recycled aggregates were not as good as those of natural aggregates, thus resulting in poorer mechanical properties of the recycled aggregate concrete. By means of aggregate surface modification, the values of water absorption of the recycled aggregate were reduced and consequently the mechanical properties (i.e. compressive strength and elastic modulus) of the resulting recycled concrete were increased. This research provides some useful practical insights to improving mechanical properties of recycled aggregate concrete.

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7

Seitl, Stanislav, Petr Miarka, Iva Rozsypalová, Katka Pokorná, Zbyněk Keršner, Jacek Katzer, and Paweł K. Zarzycki. "Mechanical fracture properties of concrete with lunar aggregate simulant." MATEC Web of Conferences 323 (2020): 01014. http://dx.doi.org/10.1051/matecconf/202032301014.

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From the volumetric point of view, aggregate is the most important ingredient in any kind of concrete. It is impossible to use raw soil instead of aggregate to produce concrete. There are numerous reasons for not using soil for concrete production on Earth, and we should not use lunar soil for concrete production on the Moon for the same reasons. Nevertheless, almost all developed lunar concrete-like composites, such as sulphur or polymeric concretes, are based on raw lunar soil. In the research programme, cement composite based on lunar aggregate simulant was tested. The mechanical fracture properties of the composite were the key point of interest. It was proven that the tested lunar concrete is characterized by stable and uniform properties. The obtained results were compared with the properties of other ordinary cement composites.

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8

Nykypanchuk, Mykhailo, Yurii Hrynchuk, and Mykola Olchovyk. "Effect of Modified Bitumen on Physico-Mechanical Properties of Asphalt Concrete." Chemistry & Chemical Technology 7, no. 4 (December 15, 2013): 467–70. http://dx.doi.org/10.23939/chcht07.04.467.

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9

Chopda, Siddhant M., and Bhavesh M. Chhattani. "Mechanical Properties of Pervious Concrete." International Journal of Technology 5, no. 2 (2015): 113. http://dx.doi.org/10.5958/2231-3915.2015.00006.1.

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10

Olivia, Monita, Annisa Arifandita Mifshella, and Lita Darmayanti. "Mechanical Properties of Seashell Concrete." Procedia Engineering 125 (2015): 760–64. http://dx.doi.org/10.1016/j.proeng.2015.11.127.

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11

Al-Azzawi, Adel A., and Ayad A. Al-Azzawi. "Mechanical properties of green concrete." IOP Conference Series: Materials Science and Engineering 888 (August 1, 2020): 012022. http://dx.doi.org/10.1088/1757-899x/888/1/012022.

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12

Bedi, Raman, Rakesh Chandra, and S. P. Singh. "Mechanical Properties of Polymer Concrete." Journal of Composites 2013 (December 29, 2013): 1–12. http://dx.doi.org/10.1155/2013/948745.

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Polymer concrete was introduced in the late 1950s and became well known in the 1970s for its use in repair, thin overlays and floors, and precast components. Because of its properties like high compressive strength, fast curing, high specific strength, and resistance to chemical attacks polymer concrete has found application in very specialized domains. Simultaneously these materials have been used in machine construction also where the vibration damping property of polymer concrete has been exploited. This review deals with the efforts of various researchers in selection of ingredients, processing parameters, curing conditions, and their effects on the mechanical properties of the resulting material.

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13

Chang, Jiang Jhy, Weichung Yeih, Ran Huang, and Jack Maochieh Chi. "Mechanical properties of carbonated concrete." Journal of the Chinese Institute of Engineers 26, no. 4 (June 2003): 513–22. http://dx.doi.org/10.1080/02533839.2003.9670804.

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14

Belarouf, Sara, A. Samaouali, Kamal Gueraoui, and H. Rahier. "Mechanical Properties of Concrete with Recycled Concrete Aggregates." International Review of Civil Engineering (IRECE) 11, no. 6 (November 30, 2020): 268. http://dx.doi.org/10.15866/irece.v11i6.18478.

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15

Lie, T. T., and V. K. R. Kodur. "Thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures." Canadian Journal of Civil Engineering 23, no. 2 (April 1, 1996): 511–17. http://dx.doi.org/10.1139/l96-055.

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For use in fire resistance calculations, the relevant thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures were determined. These properties included the thermal conductivity, specific heat, thermal expansion, and mass loss, as well as the strength and deformation properties of steel-fibre-reinforced siliceous and carbonate aggregate concretes. The thermal properties are presented in equations that express the values of these properties as a function of temperature in the temperature range between 0 °C and 1000 °C. The mechanical properties are given in the form of stress–strain relationships for the concretes at elevated temperatures. The results indicate that the steel fibres have little influence on the thermal properties of the concretes. The influence on the mechanical properties, however, is relatively greater than the influence on the thermal properties and is expected to be beneficial to the fire resistance of structural elements constructed of fibre-reinforced concrete. Key words: steel fibre, reinforced concrete, thermal properties, mechanical properties, fire resistance.

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16

Koňáková, Dana, Eva Vejmelková, Vojtěch Pommer, Lenka Scheinherrová, Petr Konvalinka, and Robert Černý. "Mechanical properties of concrete for radioactive waste repositories." MATEC Web of Conferences 282 (2019): 02104. http://dx.doi.org/10.1051/matecconf/201928202104.

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Concrete casing for radioactive repositories have to meet many strict requirements. One of the most important is a radiation protection and a radionuclide inhabitation. Bentonite, with a great sorption capacity, seems to be a suitable material for this purpose. Therefore, the main aim of this study was to assess an impact of the bentonite utilization as a component in concrete mixtures. For this reason, basic physical properties and mechanical parameters of concretes containing different amount of bentonite were determined. Bentonite applications led to the open porosity growth, while the matrix densities were not influenced. Regarding the mechanical parameters, the compressive strengths as well as the flexural strengths were significantly deteriorated by the bentonite application. Despite the presented negative effect, the obtained results seems to prove a possible applicability of a lower percentage of bentonite in concrete structures not as a cement replacement, but just as a component.

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17

Bahtli, Tuba, and Nesibe Sevde Ozbay. "Mechanical properties and freeze-thaw resistances of bronze-concrete composites." Challenge Journal of Concrete Research Letters 12, no. 2 (June 23, 2021): 39. http://dx.doi.org/10.20528/cjcrl.2021.02.001.

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Studies in the literature show that the physical and mechanical properties of concrete could be improved by the incorporation of different kinds of industrial waste, including waste tire rubber and tire steel. Recycling of waste is important for economic gain and to curb environmental problems. In this study, finely ground CuAl10Ni bronze is used to improve the physical and mechanical properties, and freeze-thaw resistances of C30 concrete. The density, cold crushing strength, 3-point bending strength, elastic modulus, toughness, and freeze-thaw resistances of concrete are determined. In addition, the Schmidt Rebound Hammer (SRH) and the ultrasonic pulse velocity (UPV) tests, which are non-destructive test methods, are applied. SEM/EDX analyses are also carried out. It is noted that a more compacted structure of concrete is achieved with the addition of bronze sawdust. Then higher density and strength values are obtained for concretes that are produced by bronze addition. In addition, concretes including bronze sawdust generally show higher toughness due to high plastic energy capacities than pure concrete.

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18

Chaichannawatik, Bhawat, Athasit Sirisonthi, Qudeer Hussain, and Panuwat Joyklad. "Mechanical Properties of Fiber Reinforced Concrete." Applied Mechanics and Materials 875 (January 2018): 174–78. http://dx.doi.org/10.4028/www.scientific.net/amm.875.174.

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This study presents results of an experimental investigation conducted to investigate the mechanical properties of sisal and glass fiber reinforced concrete. Four basic concrete mixes were considered: 1) Plain concrete (PC) containing ordinary natural aggregates without any fibers, 2) sisal fiber reinforced concrete (SFRC), 3) sisal and glass fiber reinforced concrete (SGFRC), 4, glass fiber reinforced concrete (GFRC). Investigated properties were compressive strength, splitting tensile strength, flexural tensile strength and workability. The results of fiber reinforced concrete mixes were compared with plain concrete to investigate the effect of fibers on the mechanical properties of fiber reinforced concrete. It was determined that addition of different kinds of fibers (natural and synthetic) is very useful to produce concrete. The addition of fibers was resulted into higher compressive strength, splitting and tensile strength. However, the workability of the fiber reinforced concrete was found lower than the plain concrete due to the addition of fibers in the concrete.

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19

Pani, Luisa, Lorena Francesconi, James Rombi, Fausto Mistretta, Mauro Sassu, and Flavio Stochino. "Effect of Parent Concrete on the Performance of Recycled Aggregate Concrete." Sustainability 12, no. 22 (November 12, 2020): 9399. http://dx.doi.org/10.3390/su12229399.

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Recycling concrete construction waste is a promising way towards sustainable construction. Indeed, replacing natural aggregates with recycled aggregates obtained from concrete waste lowers the environmental impact of concrete constructions and improves natural resource conservation. This paper reports on an experimental study on mechanical and durability properties of concretes casted with recycled aggregates obtained from two different parent concretes, belonging to two structural elements of the old Cagliari stadium. The effects of parent concretes on coarse recycled aggregates and on new structural concretes produced with different replacement percentages of these recycled aggregates are investigated. Mechanical properties (compressive strength, modulus of elasticity, and splitting tensile strength) and durability properties (water absorption, freeze thaw, and chloride penetration resistance) are experimentally evaluated and analyzed as fundamental features to assess structural concrete behavior. The results show that the mechanical performance of recycled concrete is not related to the parent concrete characteristics. Furthermore, the resistance to pressured water penetration is not reduced by the presence of recycled aggregates, and instead, it happens for the chloride penetration resistance. The resistance to frost–thawing seems not related to the recycled aggregates replacement percentage, while an influence of the parent concrete has been assessed.

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20

Ostrowski, Mikołaj, Paweł Pichniarczyk, and Grzegorz Kądzielawski. "Ecological and technological effects of using concretes with low Portland clinker." MATEC Web of Conferences 322 (2020): 01021. http://dx.doi.org/10.1051/matecconf/202032201021.

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Concrete with a low Portland clinker content involves the use of mineral additives as a cement component or as a additive in a concrete mix. The main factors influencing the increasing use of mineral additives in concrete technology are the advantageous development of the functional properties of the concrete mix, hardened concrete and a large impact on the ecological effects, including reduction of CO2 emissions. The use of concrete with a low Portland clinker content is part of the strategy for sustainable development of the economy. This paper describes the technological and ecological effects of using silica fly ash and granulated blast furnace slag additives in concretes with a low Portland clinker content. The cement and concrete additives used were mechanically activated, which allowed to reduce the content of Portland clinker in concrete. A new generation superplasticizer was used in the research, enabling a low water-cement ratio to be obtained. The mechanical properties and ecological effects of the production and use of concretes with a low content of Portland clinker were determined, including the reduction of CO2 emissions. Test results confirmed the very good mechanical properties of concrete with a high content of mechanically activated mineral additives. The research also showed an average of 3 times lower CO2 emissions compared to reference concretes made of CEM I Portland cement without additives.

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21

Li, Hong Fang, Li Guo, and Yi Xia. "Mechanical Properties of Concretes Containing Super-Fine Mineral Admixtures." Applied Mechanics and Materials 174-177 (May 2012): 1406–9. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.1406.

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The mechanical properties of concretes containing super fine mineral admixtures such as limestone powder, titanium slag, lithium slag and silica ash have been investigated by compression tests. It was found that 10% limestone powder used in cocncrete is beneficial to compressive strength, it reaches 111Mpa after 28 days curing. The optimum mixing amounts of titanium slag, lithium slag and silica ash are 20%, 10% and 10%, respectively. All their 28d compressive strengths exceed 100MPa, reach super-early and super-high strength concrete level. By introducing mineral admixures into concrete, the cement consumption in concrete can be greatly reduced.

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22

He, Zhi Min, Jun Zhe Liu, and Tian Hong Wang. "Mechanical Properties of Steam-Cured Concrete with Combined Mineral Admixtures." Advanced Materials Research 168-170 (December 2010): 1535–38. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1535.

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In precast concrete elements manufacturing, steam-cured concrete incorprating 30% mineral admixtures encountered the problem of too low demoulding compressive strength. To resolve it, this paper mainly studied the influence of mineral admixtures on the compressive strength, the tensile-splitting strength and the flexural strength of the steam-cured concrete. The experimental results indicated that, compared with steam-cured concrete incorprating mineral admixtures, the later strength of steam-cured concrete incorprating 0% mineral admixtures has lower increment degree and its increment of tensile-splitting strength and flexural strength inverted to some extent. The demoulding compressive strength is too low for the high volume fly ash concrete mixtures. The problem of too low demoulding compressive strength is solved by incorprating composites of ground blast furnace slag(GBFS) and fly ash. Different varieties of mineral admixture used in the concretes can produce a certain degree of potentiation.

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23

Park, Wan Shin, Jeong Eun Kim, Nam Yong Eom, Sun Woong Kim, Do Gyeum Kim, and Myung Sug Cho. "Mechanical Properties of High Strength Concrete Using Mineral Admixtures." Applied Mechanics and Materials 372 (August 2013): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amm.372.235.

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This paper reports an investigation in which the performance of fly ash, blast furnace slag and silica fume high strength concretes were studied under 7 and 28 curing days. Three high strength concrete mixtures were made in this investigation. Mixtures containing 25% fly ash, 25% fly ash and 25% blast furnace slag, and 5% silica fume as cement replacement, respectively. The water-binder ratio of all the high strength concrete mixtures was kept constant at 0.34. The replacement of silica fume in the high strength concrete mixtures indicated higher value of the compressive strength, splitting tensile and modulus of elasticity. In addition, blast furnace slag is effective for strength and modulus of elasticity improvement between 7 to 28 curing days.

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24

Sun, Bo Cheng, and Shao Qing Wang. "Rice Hull Ash Concrete Mechanical Properties." Applied Mechanics and Materials 193-194 (August 2012): 423–26. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.423.

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This technical note discusses an innovative use of rice hull ash (RHS) as filler in concrete. RHS in the range of 0–30% was used as a partial replacement for ordinary cement in a concrete of mix ratio 1:2:4:0.6 (cement: sand: coarse aggregate: water cement ratio). Fresh concrete properties, compressive, split tensile strengths, and modulus of rupture were measured for concrete mixtures with RHS within the investigated replacement levels. The results showed that the setting times of RSH concrete increased with higher ash content, while the compressive, split tensile strengths and modulus of rupture showed a reverse trend.

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25

Alonso, E., L. Martvnez-Gomez, W. Martvnez, L. Villaseρor, and V. M. Castapo. "Mechanical Properties of an Igneous Aggregate-Modified Hydraulic Concrete." Advanced Composites Letters 10, no. 2 (March 2001): 096369350101000. http://dx.doi.org/10.1177/096369350101000203.

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Portland cement concretes were prepared by adding different igneous materials from west central Mexico. The results of the mechanical testing of these materials show the feasibility of employing igneous minerals to produce concretes and mortars, provided a careful control of granulometry and the geochemistry involved is attained. The mechanical performance, as well as the workability of the slurries can be managed by the convenient use of commercial additives (i.e. water reducers and aging accelerators). These results open the attractive possibility of expanding the natural sources of concrete-forming elements.

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26

T, Anupriya, and Jayapal A. "Experimental Study on Mechanical Properties of Sintered Fly Ash Aggregate in Concrete." International Journal of Trend in Scientific Research and Development Volume-3, Issue-3 (April 30, 2019): 203–15. http://dx.doi.org/10.31142/ijtsrd21679.

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27

Fedroff, David, Shuaib Ahmad, and Banu Zeynep Savas. "Mechanical Properties of Concrete with Ground Waste Tire Rubber." Transportation Research Record: Journal of the Transportation Research Board 1532, no. 1 (January 1996): 66–72. http://dx.doi.org/10.1177/0361198196153200110.

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Because used tires represent an increasingly serious environmental problem in the United States, this study was undertaken to examine the feasibility of using finely ground rubber in Portland-cement concrete. Various percentages of rubber, by weight of cement, were added to a control mix and the effects on the plastic and hardened properties of concrete were investigated. Workability of the mixes was affected, but it was controllable. For hardened concretes, the tests were conducted for compressive strength, split-cylinder strength, modulus of elasticity, and flexural strength. Stress-strain response was also investigated. The strength and stiffness characteristics were markedly reduced for rubcrete mixtures.

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28

Shan, Liang, Liang Zhang, and Li Hua Xu. "Experimental Investigations on Mechanical Properties of Hybrid Steel-Polypropylene Fiber-Reinforced Concrete." Applied Mechanics and Materials 638-640 (September 2014): 1550–55. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.1550.

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The mechanical tests of hybrid steel-polypropylene fiber-reinforced concrete (HSPFRC) have been carried out. Concretes containing different volume fraction and aspect ratio of steel and polypropylene fibers mixed in one concrete grade were critically analyzed in terms of compressive, split tensile, axial tensile properties. Test results show that the fibers, when used in a hybrid form, can result in superior mechanical performance compared to their individual fiber-reinforced concretes.

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He, Xi Xi, and Qing Wang. "Literature Review: Properties of Silica Fume Concrete." Advanced Materials Research 1004-1005 (August 2014): 1516–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1516.

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Silica fume (SF) modifies interfacial transition zone between cement paste and aggregate at the micro level. Properties of both fresh and hardened silica fume concrete are affected significantly compared to normal concrete. Experiments indicate that concretes become more cohesive and less prone to segregation in the presence of silica fume, moreover, performance of water demand, setting of time, plastic shrinkage varies respectively from concretes without silica fume. Obvious mechanical enhancement of concrete is observed in the aspects of compressive strength tensile strength, elastic modulus as well as fracture toughness.

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30

Hrázský, J., and P. Král. "Analysis of properties of boards for concrete formwork." Journal of Forest Science 50, No. 8 (January 11, 2012): 382–98. http://dx.doi.org/10.17221/4665-jfs.

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The paper summarizes results of the analysis of properties of large-area materials usable for the manufacture of concrete formwork and available on our market. The materials were compared from the viewpoint of physical and mechanical properties including economic evaluations. Materials were assessed manufactured by DOKA company dealing with the production of shuttering systems, viz. Doka 3-SO, Dokadur and Dokaplex. The materials were compared with following boards available on our market: bioboard Agrop, water-resistant (exterior) surface-treated plywood and oriented strandboard (OSB). Results of the paper consist in the comparison of cost/physical-mechanical properties.

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31

Belaoura, Mebarek, Dalila Chiheb, Mohamed Nadjib Oudjit, and Abderrahim Bali. "Temperature Effect on the Mechanical Properties of Very High Performance Concrete." International Journal of Engineering Research in Africa 34 (January 2018): 29–39. http://dx.doi.org/10.4028/www.scientific.net/jera.34.29.

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This study aims at a better understanding of the behaviour of very high performance concretes (VHPC) subjected to high temperatures. The temperature increase within the concrete originating from the hydratation exothermic reaction of cement is emphasized by the mass effect of the structures and can lead to thermal variations of around 50°C between the heart and the structures walls. These thermal considerations are not without consequence on durability and the physical and mechanical properties of very high performance concrete, such as the compressive strength. This work is an experimental research that shows the effects of temperature on the mechanical properties of very high performance concrete (VHPC) and compares them with those of conventional concrete and HPC. Test specimens in usual concrete, HPC and VHPC are made, preserved till maturity of the concrete, and then subjected to a heating-cooling cycle from room temperature to 500°C at heating rate 0.1°C/min. Mechanical tests on the hot concrete and cooling (air and water) were realized. The results show that the mechanical characteristics of VHPC (density, compressive strength, tensile strength and elastic modulus) decrease with increasing temperature, but their strength remains higher than that of conventional concrete.

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32

Topçu, I. B. "Physical and mechanical properties of concretes produced with waste concrete." Cement and Concrete Research 27, no. 12 (December 1997): 1817–23. http://dx.doi.org/10.1016/s0008-8846(97)00190-7.

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33

Alanazi, Hani. "Effect of Aggregate Types on the Mechanical Properties of Traditional Concrete and Geopolymer Concrete." Crystals 11, no. 9 (September 12, 2021): 1110. http://dx.doi.org/10.3390/cryst11091110.

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For the same concrete quality, different types of coarse aggregates may result in different mechanical properties. This paper presents a study on the effect of aggregate types on the mechanical properties of two concretes, namely, geopolymer concrete (GP) and traditional Portland cement (TC) concrete. The mechanical properties were investigated through several large-scale tests. Moreover, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and laser scanning microscope (LSM) images were obtained to study the microstructure of tested mixes. The results revealed that the aggregate type has different effects on the mechanical properties of TC and GP, as they were behaving opposite to quartz and limestone aggregates. Microstructure analysis further confirmed the growth of well-bonded regions between the paste and aggregate in the GP with limestone aggregates, and the formation of several weak interfacial zones in concrete mixtures made with quartz aggregates. It was concluded that the mechanical properties of GP are very sensitive to the stiffness of aggregate, concentrations of stress, and the physical and chemical reactions occurring in the interfacial transition zone which may lead to improved or weakened bond strength between paste and aggregates.

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34

Kim, Yoo-Jae, Jiong Hu, Soon-Jae Lee, and Byung-Hee You. "Mechanical Properties of Fiber Reinforced Lightweight Concrete Containing Surfactant." Advances in Civil Engineering 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/549642.

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Fiber reinforced aerated lightweight concrete (FALC) was developed to reduce concrete's density and to improve its fire resistance, thermal conductivity, and energy absorption. Compression tests were performed to determine basic properties of FALC. The primary independent variables were the types and volume fraction of fibers, and the amount of air in the concrete. Polypropylene and carbon fibers were investigated at 0, 1, 2, 3, and 4% volume ratios. The lightweight aggregate used was made of expanded clay. A self-compaction agent was used to reduce the water-cement ratio and keep good workability. A surfactant was also added to introduce air into the concrete. This study provides basic information regarding the mechanical properties of FALC and compares FALC with fiber reinforced lightweight concrete. The properties investigated include the unit weight, uniaxial compressive strength, modulus of elasticity, and toughness index. Based on the properties, a stress-strain prediction model was proposed. It was demonstrated that the proposed model accurately predicts the stress-strain behavior of FALC.

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ARAKI, Hideo, and Akira YASOJIMA. "MECHANICAL PROPERTIES OF LOW STRENGTH CONCRETE." AIJ Journal of Technology and Design 16, no. 32 (2010): 11–16. http://dx.doi.org/10.3130/aijt.16.11.

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Cai, Jun. "Mechanical Properties of Crumb Rubber Concrete." Advanced Materials Research 936 (June 2014): 1442–45. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1442.

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This paper presents the results of a study on mechanical properties of crumb rubber concrete (CRC). The compressive strength, splitting tensile strength and flexural toughness of CRC were investigated. The effect of crumb rubber proportion on the mechanical properties was experimentally analyzed. The test results indicate that the addition of crumb rubber can significantly improve the ductility and flexural toughness of CRC.

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Abdel-Rahman, A. G. "MECHANICAL PROPERTIES OF SELF COMPACTING CONCRETE." ERJ. Engineering Research Journal 25, no. 2 (April 1, 2002): 1–11. http://dx.doi.org/10.21608/erjm.2002.70637.

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Ramujee, Kolli, and M. PothaRaju. "Mechanical Properties of Geopolymer Concrete Composites." Materials Today: Proceedings 4, no. 2 (2017): 2937–45. http://dx.doi.org/10.1016/j.matpr.2017.02.175.

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S. I. Al Saffar, Nadiya. "“MECHANICAL PROPERTIES OF STEEL FIBROUS CONCRETE”." AL-Rafdain Engineering Journal (AREJ) 14, no. 3 (September 28, 2006): 43–57. http://dx.doi.org/10.33899/rengj.2006.45308.

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Tadepalli, Padmanabha Rao, Y. L. Mo, and Thomas T. C. Hsu. "Mechanical properties of steel fibre concrete." Magazine of Concrete Research 65, no. 8 (April 2013): 462–74. http://dx.doi.org/10.1680/macr.12.00077.

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Nishiyama, Minehiro. "Mechanical Properties of Concrete and Reinforcement." Journal of Advanced Concrete Technology 7, no. 2 (June 30, 2009): 157–82. http://dx.doi.org/10.3151/jact.7.157.

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Chen, Bing, and Congqi Fang. "Mechanical properties of EPS lightweight concrete." Proceedings of the Institution of Civil Engineers - Construction Materials 164, no. 4 (August 2011): 173–80. http://dx.doi.org/10.1680/coma.900059.

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Abdelgader, Hakim. "Mechanical properties of no-fines concrete." MATERIAŁY BUDOWLANE 1, no. 8 (August 5, 2016): 131–33. http://dx.doi.org/10.15199/33.2016.08.40.

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., Silvia Hanah S. "MECHANICAL PROPERTIES OF BIO MINERALIZED CONCRETE." International Journal of Research in Engineering and Technology 04, no. 05 (May 25, 2015): 30–34. http://dx.doi.org/10.15623/ijret.2015.0405006.

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Tassew, Samson T., and Adam S. Lubell. "Mechanical properties of lightweight ceramic concrete." Materials and Structures 45, no. 4 (October 20, 2011): 561–74. http://dx.doi.org/10.1617/s11527-011-9782-1.

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Huang, Yamei, Lihua Wang, and Zhaoheng Li. "The Mechanical Properties of Planting Concrete." IOP Conference Series: Earth and Environmental Science 525 (July 7, 2020): 012179. http://dx.doi.org/10.1088/1755-1315/525/1/012179.

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Cachim, Paulo B. "Mechanical properties of brick aggregate concrete." Construction and Building Materials 23, no. 3 (March 2009): 1292–97. http://dx.doi.org/10.1016/j.conbuildmat.2008.07.023.

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Maksimov, R. D., L. Jirgens, J. Jansons, and E. Plume. "Mechanical properties of polyester polymer-concrete." Mechanics of Composite Materials 35, no. 2 (March 1999): 99–110. http://dx.doi.org/10.1007/bf02257239.

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Jerga, Ján. "Physico-mechanical properties of carbonated concrete." Construction and Building Materials 18, no. 9 (November 2004): 645–52. http://dx.doi.org/10.1016/j.conbuildmat.2004.04.029.

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Chen, Yu, Ke-Jin Wang, and Di Liang. "Mechanical properties of pervious cement concrete." Journal of Central South University 19, no. 11 (November 2012): 3329–34. http://dx.doi.org/10.1007/s11771-012-1411-9.

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