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Journal articles on the topic 'Long-term strength'

Author: Grafiati

Published: 4 June 2025

Last updated: 23 June 2025

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1

Won. "Long-term strength of shotcrete with improved C12A7 based mineral accelerator." Journal of Korean Tunnelling and Underground Space Association 16, no. 2 (2014): 135. http://dx.doi.org/10.9711/ktaj.2014.16.2.135.

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2

Larionov, Evgeny. "A long-term strength of constructive materials." MATEC Web of Conferences 251 (2018): 04068. http://dx.doi.org/10.1051/matecconf/201825104068.

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A long-term strength materials under an axially loading of constructive elements is considered and the estimates of this strength are reduced. The proposed approach is connected with the notion so-called energy of entirety [1]. It is notable that this value can be used instead of known Reiner’s invariant [2]. A material (concrete, steel, graph) is considered as a union of its links with statistical disturbed strengths [3]. This conception allows to modify Boltzmann’s principle superposition of fraction creep deformations [4] and in addition, implies the identity of non-linear stresses function for the instantaneous and retarding deformations. The degeneration of long-term strength because of vibrational influence take into account and the strengthening of the materials in the course of their formation is considered.

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3

Volkov, Ivan, Leonid Igumnov, and Denis Shishulin. "Evaluating long-term strength of structures." Thermal Science 23, Suppl. 2 (2019): 477–88. http://dx.doi.org/10.2298/tsci19s2477v.

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The issue of evaluating strength and service life is discussed as applied to structures, the exploitation properties of which are characterized by multi-parametric nonstationary thermal mechanical effects. The main requirements to mathematical models of the related processes are formulated. In the framework of mechanics of damaged media, a mathematical model describing processes of inelastic deformation and damage accumulation due to creep is developed. The mechanics of damaged media model consists of three interconnected parts: relations defining inelastic behavior of the material accounting for its dependence on the failure process, equations describing kinetics of damage accumulation, and a strength criterion of the damaged material. The results of numerically simulating the carrying capacity of a nuclear power plant reactor vessel in the event of a hypothetical emergency are presented. Emergency conditions were modeled by applying pressure modeling the effect of melt-down, the constant internal pressure and temperature varying within the part of the vessel in question. The analysis of the obtained numerical results made it possible to note a number of characteristic features accompanying the process of deformation and failure of such facilities, connected with the time and place of the forming macrocracks, the stressed-strained state history and the damage degree in the failure zone, etc. The results of comparing the numerical and experimental data make it possible to conclude that the proposed defining relations of mechanics of damaged media adequately describe degradation of the initial strength properties of the material for the long-term strength mechanism and can be effectively used in evaluating strength and service life of structures under thermal mechanical loading.

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4

Frankel, N., G. J. Pearson, and R. Labella. "Long‐term strength of aesthetic restoratives." Journal of Oral Rehabilitation 25, no. 2 (1998): 89–93. http://dx.doi.org/10.1046/j.1365-2842.1998.00240.x.

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5

Dimitrienko, Yu I., and I. P. Dimitrienko. "Long-term strength of reinforced composites." Mechanics of Composite Materials 25, no. 1 (1989): 13–18. http://dx.doi.org/10.1007/bf00608446.

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6

Kravcov, Alexander N., Pavel Svoboda, Vaclav Pospíchal, Dmitry V. Morozov, and Pavel N. Ivanov. "Assessment of Long-Term Strength of Rocks." Key Engineering Materials 755 (September 2017): 62–64. http://dx.doi.org/10.4028/www.scientific.net/kem.755.62.

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In relation to extraction of coal seams at significant depths, the issue of protection of safety equipment against pressure exerted by rock becomes very important. In many surveys of the effects of pressure exerted by rock it was demonstrated that the intensity of stress around the mine works increases the greater the depth of the mine works. However, surveys of technological mine works have shown that the level of deformation of the mine bracing varies in various types of rock at identical depths and no precise rule was established between the increase in pressure exerted by rock and the increasing depth of the mine works.

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7

Aliev, A. A. "Long-Term Strength Estimation of Zirconia Ceramics." Proceedings of Higher Educational Institutions. Маchine Building, no. 11 (728) (November 2020): 83–88. http://dx.doi.org/10.18698/0536-1044-2020-11-83-88.

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A standard experimental assessment of the service life of high-temperature zirconia ceramics (GOST 4070–2014) requires the use of complicated heating and measuring equipment and hundreds of expensive specimens. This necessitates the development of calculation methods for evaluating long-term strength depending on the thermomechanical loading conditions without carrying out a full range of laboratory tests. The existing experimental estimation models of the primary and secondary creep regimes of ceramics consider the temperature range up to 1600°C, which is lower than zirconia limiting operating temperatures (2000°C and higher). Based on the Norton – Bailey law, long-term strength estimation of fully stabilized zirconia ceramics is carried out. Using previously known experimental data of other authors for ceramics made of fully stabilized zirconia (0.1Y2O3 + 0.9ZrO2), the creep constants values were calculated at high-temperature (1600–1800 °C) loading levels ≤5 MPa. A power-law regression equation with a high degree of correlation that evaluates the creep of the test material under loads up to 20 MPa and temperatures up to 2100 °C is proposed.

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8

Choi, Yeol, and Moon-Myung Kang. "Long-Term Performance of High Strength Concrete." Journal of the Korea Concrete Institute 16, no. 3 (2004): 425–31. http://dx.doi.org/10.4334/jkci.2004.16.3.425.

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9

Lokoshchenko, A. M., and D. A. Kulagin. "Diffusion locking effect on long-term strength." Moscow University Mechanics Bulletin 69, no. 5 (2014): 123–25. http://dx.doi.org/10.3103/s0027133014050045.

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10

Špak, M., and R. Bašková. "Long-term strength properties of HVFA concretes." IOP Conference Series: Materials Science and Engineering 71 (January 20, 2015): 012001. http://dx.doi.org/10.1088/1757-899x/71/1/012001.

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11

Lange, David A. "Long‐Term Strength Development of Pavement Concretes." Journal of Materials in Civil Engineering 6, no. 1 (1994): 78–87. http://dx.doi.org/10.1061/(asce)0899-1561(1994)6:1(78).

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12

Geguzin, Ya E., V. P. Matsokin, D. V. Pluzhnikova, and F. Hussein. "Long-term strength of high-porosity structures." Soviet Powder Metallurgy and Metal Ceramics 28, no. 5 (1989): 378–82. http://dx.doi.org/10.1007/bf00795041.

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13

Tjäderhane, L., P. Mehtälä, L. Breschi, D. H. Pashley, F. R. Tay, and M. Carrilho. "DMSO improves long-term dentin bond strength." Dental Materials 27 (January 2011): e23-e24. http://dx.doi.org/10.1016/j.dental.2011.08.457.

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14

Wilkins, B. J. S. "The long-term strength of plutonic rock." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 24, no. 6 (1987): 379–80. http://dx.doi.org/10.1016/0148-9062(87)92261-3.

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15

Zhikhovich, V. V. "Investigation of long-term strength of chalk." Soil Mechanics and Foundation Engineering 27, no. 5 (1990): 197–201. http://dx.doi.org/10.1007/bf02309518.

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16

Jones, Gareth R., Kaitlyn P. Roland, Noelannah A. Neubauer, and Jennifer M. Jakobi. "Handgrip Strength Related to Long-Term Electromyography." Archives of Physical Medicine and Rehabilitation 98, no. 2 (2017): 347–52. http://dx.doi.org/10.1016/j.apmr.2016.09.133.

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17

Romashko-Maistruk, Olena. "Predicting long-term strength of compressed concrete." Acta Scientiarum Polonorum. Architectura 24 (April 24, 2025): 60–69. https://doi.org/10.22630/aspa.2025.24.5.

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The article characterises the features of compressed concrete deformation under the action of long-term loads. The aim of the research presented in the article was to establish the analytical dependence of determining the long-term strength of compressed concrete. It hypothesises that the specific potential energy of its ultimate deformation (destruction) is invariant and independent of the concrete loading mode. Other researchers’ critical analyses have confirmed the functional dependence of the level of long-term strength of compressed concrete not only from its standardised elastic-plastic characteristics but also from the concrete strain rate. The proposed methodology evaluation for determining the long-term strength of compressed concrete is reduced to a comparison of the relevant theoretical calculated results with the various researchers’ published experimental data.

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18

NECKING, L. E., G. LUNDBORG, and J. FRIDÉN. "Hand Muscle Weakness in Long-Term Vibration Exposure." Journal of Hand Surgery 27, no. 6 (2002): 520–25. http://dx.doi.org/10.1054/jhsb.2002.0810.

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Hand muscle strength was compared between workers regularly exposed to hand-held vibrating tools ( n = 81) and a non-exposed control group ( n = 45). Maximal voluntary strengths of hand grip, thumb pinch, thumb palmar abduction and index and little finger abduction were measured. The exposed workers had significantly weaker extrinsic (7%, P < 0.01) and intrinsic (19%, P < 0.0001) muscles than the controls. Reduced vibration perception was noted in nine vibration-exposed workers who presented with symptoms of hand muscle weakness ( P < 0.01). Cold intolerance following vibration exposure was found to precede sensorineural and vasospastic symptoms. We therefore postulate that cold intolerance may be a valuable marker for early detection of the adverse effects of vibration. This study emphasizes the need for tests of intrinsic muscle strength in order to evaluate the impairment of hand function observed in vibration-exposed workers.

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19

Heins, Kira, Magdalena Kimm, Lea Olbrueck, et al. "Long-Term Bonding and Tensile Strengths of Carbon Textile Reinforced Mortar." Materials 13, no. 20 (2020): 4485. http://dx.doi.org/10.3390/ma13204485.

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This paper deals with the long-term bonding and tensile strengths of textile reinforced mortar (TRM) exposed to harsh environments. The objective of this study was to investigate the long-term bonding and tensile strengths of carbon TRM by an accelerated aging method. Moisture, high temperature, and freezing–thaw cycles were considered to simulate harsh environmental conditions. Grid-type textiles were surface coated to improve the bond strength with the mortar matrix. A total of 130 TRM specimens for the bonding test were fabricated and conditioned for a prolonged time up to 180 days at varying moisture conditions and temperatures. The long-term bonding strength of TRM was evaluated by a series of bonding tests. On the other hand, a total of 96 TRM specimens were fabricated and conditioned at freezing–thaw conditions and elevated temperature. The long-term tensile strength of TRM was evaluated by a series of direct tensile tests. The results of the bonding test indicated that TRM was significantly degraded by moisture. On the other hand, the influence of the freezing–thaw conditions and high temperature on the tensile strength of the TRM was insignificant.

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20

Ugorskii, A. �., and E. A. Khein. "Link between long-term structural strength and long-term ductility in low-strain fracture." Strength of Materials 18, no. 6 (1986): 741–47. http://dx.doi.org/10.1007/bf01523952.

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21

Maliar, Volodymyr. "Long-term strength of bitumen during glass transition." Bulletin of Kharkov National Automobile and Highway University, no. 106 (September 19, 2024): 108. http://dx.doi.org/10.30977/bul.2219-5548.2024.106.0.108.

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Abstract. Problem. Long-term strength and durability are the most important characteristics of any structural material. Since these mechanical properties depend on their manufacturing technology and composition, there is a need to conduct research on road construction materials for long-term strength and durability. There are many studies on the long-term strength of various solids, including asphalt concrete, but there is no data on the long-term strength of bitumen, which is in a glass transition state at low temperatures. The main goal. The aim of the work was to experimentally determine the long-term strength of bitumen at low operating temperatures. It was also necessary to establish how the structural type of bitumen and its filling with various mineral powders affect long-term strength. Methodology. To determine the long-term strength of bitumen, the Heppler consistometer, which is often used in the thermomechanical analysis of polymers, was adapted. To study the influence of the structural type of bitumen on its long-term strength during glass transition, bitumens with the same penetration and close to the first (gel), second (sol) and third (sol-gel) structural types were obtained. Results. The nature of the dependences of the time to destruction from the applied load at a constant bitumen temperature differs from the similar dependences of solid single-phase materials. During the transition of bitumen to a glassy state, static destruction depends on the plasticity of the material, the greater it is, the lower the temperature stress due to the irregular complex structure of the material. Bitumens of the first structural type (gel) show better relaxation properties at low temperatures compared to bitumens of the second structural type (sol). As a result, their long-term durability is higher. Filling bitumen with mineral powders of different origins changes the structure of the binder, it becomes more ordered. The result is an increase in strength and a decrease in temperature stress of bitumen during glass transition. Originality. New experimental data on the long-term strength of bitumen at low operating temperatures were obtained. It is shown that they are described by the formula of S.M. Zhurkov. Practical value. It is possible to improve the low-temperature properties of asphalt concrete by using bitumen of the first type with quartz mineral powder

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22

Ling, T. C., H. M. Nor, M. R. Hainin, and S. K. Lim. "Long-term strength of rubberised concrete paving blocks." Proceedings of the Institution of Civil Engineers - Construction Materials 163, no. 1 (2010): 19–26. http://dx.doi.org/10.1680/coma.2010.163.1.19.

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23

Breslavsky, D. V., O. O. Breslavska, and A. V. Kozlyuk. "Web tools for long term strength data processing." Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines 1, no. 46 (2016): 73–76. http://dx.doi.org/10.20998/2078-9130.2016.46.88053.

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24

OKUBO, Seisuke, Kimihiro HASHIBA, and Katsunori FUKUI. "A Consideration on Long-Term Strength of Rock." Journal of MMIJ 129, no. 10_11 (2013): 635–41. http://dx.doi.org/10.2473/journalofmmij.129.635.

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25

Samoilov, S. P., and A. O. Cherniavsky. "Creep and Long-Term Strength of Molybdenum Alloy." Materials Science Forum 843 (February 2016): 28–33. http://dx.doi.org/10.4028/www.scientific.net/msf.843.28.

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Mechanical behavior of a molybdenum alloy for high-temperature application was investigated at monotonic loading up to fracture, stress-and strain-controlled cyclic loading and short-term creep (less than 9 hours) under the temperatures from 293 to 1773 K using Gleeble-3800 physical simulator. The tests show that plastic strain corresponding to the tensile strength of the material under monotonic loading is small enough (<1%) whereas residual plastic strain after fracture exceeds by 50%. Repeated loading decreases the tensile strength and yield stress, but increases stable (rising) part of stress-strain curve. Increase in the test temperature leads to the change in fracture type from ductile to quasi-brittle distributed at a temperature above 1673 K. Under relatively low temperatures the rheological properties of the material depend strongly on the material processing history. Obtained creep data allows putting up a thermo-activational type equation used to calculate the steady creep rate. Coupling with the known Hoff's model for the creep prefracture stage, this equations allow not only strain rate but also adequate estimation of fracture time.

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26

Romas’ko, V. S. "Long-term strength of coke-furnace heating walls." Coke and Chemistry 52, no. 6 (2009): 273–75. http://dx.doi.org/10.3103/s1068364x09060076.

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27

OKUBO, Seisuke, Katsunori FUKUI, and Koichi SHIN. "Failure Criterion and Long-Term Strength of Rock." Shigen-to-Sozai 115, no. 4 (1999): 213–18. http://dx.doi.org/10.2473/shigentosozai.115.213.

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28

Turusov, R. A., A. Ya Gorenberg, and B. M. Yazyev. "Long-term normal tearing strength of adhesive bonds." Polymer Science Series D 5, no. 1 (2012): 7–14. http://dx.doi.org/10.1134/s1995421212010169.

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29

Tesch, P., P. Komi, and K. Häkkinen. "Enzymatic Adaptations Consequent to Long-Term Strength Training*." International Journal of Sports Medicine 08, S 1 (1987): S66—S69. http://dx.doi.org/10.1055/s-2008-1025706.

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30

Braun, William E., and Jesse D. Schold. "Strength in numbers—predicting long-term transplant outcomes." Nature Reviews Nephrology 7, no. 3 (2011): 135–36. http://dx.doi.org/10.1038/nrneph.2011.10.

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31

Forbeck, S., C. Bayles, B. Marks, M. Eetsco, and J. Prendergast. "1050 MEASURING GRIP STRENGTH IN LONG TERM CARE." Medicine & Science in Sports & Exercise 26, Supplement (1994): S187. http://dx.doi.org/10.1249/00005768-199405001-01052.

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32

Aïtcin, P. C., and P. Laplante. "Long‐Term Compressive Strength of Silica‐Fume Concrete." Journal of Materials in Civil Engineering 2, no. 3 (1990): 164–70. http://dx.doi.org/10.1061/(asce)0899-1561(1990)2:3(164).

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33

Shihata, Sabry A., and Zaki A. Baghdadi. "Long-Term Strength and Durability of Soil Cement." Journal of Materials in Civil Engineering 13, no. 3 (2001): 161–65. http://dx.doi.org/10.1061/(asce)0899-1561(2001)13:3(161).

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34

Hansen, Torben C. "Long-term strength of high fly ash concretes." Cement and Concrete Research 20, no. 2 (1990): 193–96. http://dx.doi.org/10.1016/0008-8846(90)90071-5.

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35

Zaretskii, Yu K. "Long-term strength and viscoplasticity of clayey soils." Soil Mechanics and Foundation Engineering 32, no. 2 (1995): 37–42. http://dx.doi.org/10.1007/bf02336385.

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36

Müller, Werner, Ines Jakob, Stefan Seeger, and Renate Tatzky-Gerth. "Long-term shear strength of geosynthetic clay liners." Geotextiles and Geomembranes 26, no. 2 (2008): 130–44. http://dx.doi.org/10.1016/j.geotexmem.2007.08.001.

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37

Pearson, G. J., and A. S. Atkinson. "Long-term flexural strength, of glass ionomer cements." Biomaterials 12, no. 7 (1991): 658–60. http://dx.doi.org/10.1016/0142-9612(91)90113-o.

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38

KAHANOVITZ, N., K. VIOLA, and M. GALLAGHER. "Long-Term Strength Assessment of Postoperative Diskectomy Patients." Spine 14, no. 4 (1989): 402–3. http://dx.doi.org/10.1097/00007632-198904000-00010.

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39

Zhang, Yu, and Brian Lawn. "Long-term strength of ceramics for biomedical applications." Journal of Biomedical Materials Research 69B, no. 2 (2004): 166–72. http://dx.doi.org/10.1002/jbm.b.20039.

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40

de Larrard, F., and J. L. Bostvironnois. "On the long–term strength losses of silica–fume high–strength concretes." Magazine of Concrete Research 43, no. 155 (1991): 109–19. http://dx.doi.org/10.1680/macr.1991.43.155.109.

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41

Kimura, K., H. Kushima, F. Abe, and K. Yagi. "Inherent creep strength and long term creep strength properties of ferritic steels." Materials Science and Engineering: A 234-236 (August 1997): 1079–82. http://dx.doi.org/10.1016/s0921-5093(97)00345-6.

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42

Krastev, R. K., S. Djoumaliisky, and I. Borovanska. "Long-Term Strength of Polymer Blends from Recycled Materials." Journal of Theoretical and Applied Mechanics 43, no. 3 (2013): 59–66. http://dx.doi.org/10.2478/jtam-2013-0025.

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Abstract This report presents data on the long-term strength of five composites made of plastic waste. They contain low density polyethylene, high density polyethylene, polypropylene and polystyrene (LDPE, HDPE, PP and PS). Long-term strength is determined experimentally by tensile creep to fracture. The experimentally determined long-term strength is compared to predictions for its probabilistic boundaries. The calculation method of these predictions uses data from short-term experiments. The calculated predictions are true for four compositions which exhibit ductile fracture. The composite containing 50 wt.% PS has the greatest strength (of the tested specimens) and has brittle fracture. Its calculated estimate of long-term strength is not consistent with the experimental one.

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43

Ebid, Anwar Abdelgayed, and Ahmed Mohamed Elsodany. "LONG-TERM ASSESSMENT OF ECCENTRIC, ISOMETRIC, CONCENTRIC MUSCLE STRENGTH AND FUNCTIONAL CAPACITY AFTER SEVERELY BURNED ADULT." International Journal of Physiotherapy and Research 3, no. 3 (2015): 1024–31. http://dx.doi.org/10.16965/ijpr.2015.131.

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44

Daniels, Benjamin, Sallie-Anne Pearson, Nicholas A. Buckley, Claudia Bruno, and Helga Zoega. "Long-term use of proton-pump inhibitors: whole-of-population patterns in Australia 2013–2016." Therapeutic Advances in Gastroenterology 13 (January 2020): 175628482091374. http://dx.doi.org/10.1177/1756284820913743.

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Background: Proton-pump inhibitors (PPIs) are among the most prescribed medicines worldwide and concern about their long-term use is growing. We used dispensing claims for every person in Australia dispensed publicly subsidized PPIs between 2013 and 2016 to determine the incidence and prevalence of PPI use and to examine the patterns and durations of PPI treatment among individuals continuing treatment beyond the guideline-recommended maximum 12 weeks. Methods: We estimated annual prevalence and incidence per 100 people and duration of treatment for every Australian dispensed publicly subsidized PPIs between 2013 and 2016. We examined patterns of PPI treatment in three patient subgroups using PPIs for more than 12 weeks duration; people receiving maintenance, long-term continuous or long-term intermittent treatment. We calculated the proportion in each subgroup stepping down from higher to lower PPI strengths, stepping up from lower to higher PPI strength and discontinuing treatment. Results: PPIs were dispensed to 4,388,586 people; 60% were women; median age at initiation was 52 years [interquartile range (IQR): 36–65]. Standard and high strength PPIs accounted for 95% of dispensings. Annual incidence and prevalence were 3.9/100 and 12.5/100, respectively, in 2016 and highest among individuals over 65 years (prevalence range: 33–43/100). Most people (67%) stopped treatment after one dispensing; while 25%, 6% and 10% continued on maintenance, long-term continuous and long-term intermittent treatment, respectively. Median duration of treatment in people continuing treatment was 501 days (IQR: 180–not reached) for maintenance treated individuals and ‘not reached’ for long-term treated individuals. We observed 35%, 20% and 47% of people stepping down from higher to lower treatment strengths on maintenance, long-term continuous and long-term intermittent treatment, respectively. Conclusions: Longer-term treatment with higher strength PPIs is common. Targeted regulation of PPI prescribing may improve the uptake of lower strength formulations and reduce both harms and costs associated with long-term PPI treatment.

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45

Liu, Lin, and Weiya Xu. "Experimental Researches on Long-Term Strength of Granite Gneiss." Advances in Materials Science and Engineering 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/187616.

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It is important to confirm the long-term strength of rock materials for the purpose of evaluating the long-term stability of rock engineering. In this study, a series of triaxial creep tests were conducted on granite gneiss under different pore pressures. Based on the test data, we proposed two new quantitative methods, tangent method and intersection method, to confirm the long-term strength of rock. Meanwhile, the isochronous stress-strain curve method was adopted to make sure of the accuracy and operability of the two new methods. It is concluded that the new methods are suitable for the study of the long-term strength of rock. The effect of pore pressure on the long-term strength of rock in triaxial creep tests is also discussed.

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46

Ding, Guosheng, Jianfeng Liu, Lu Wang, Zhide Wu, and Zhiwei Zhou. "Discussion on Determination Method of Long-Term Strength of Rock Salt." Energies 13, no. 10 (2020): 2460. http://dx.doi.org/10.3390/en13102460.

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Due to the extremely low permeability and the excellent creep behavior, rock salt is the optimal surrounding rock of underground energy storage. The long-term safe operation of the rock salt energy storage is closely related to the creep behavior and long-term strength of rock salt, but few researches focus on the long-term strength of rock salt. In order to more accurately predict the long-term strength of rock salt, the isochronous stress–strain curve method and the volume expansion method for determining the long-term strength were analyzed and discussed based on axial compression tests and axial creep tests. The results show that the isochronous stress–strain curve method is intuitive but will greatly increase the test cost and test time to obtain a satisfactory result. The volume expansion method is simple, but the long-term strength obtained according to the inflection point of volumetric strain is much greater than the actual long-term strength of rock salt. Therefore, a new method applicable to rock salt was proposed based on the evolution of damage in rock salt in this paper, which takes the corresponding stress value at the damage initiation point as the long-term strength. The long-term strength determined by this method is consistent with that by the isochronous stress–strain curve method. The method is more economical and convenient and aims to provide a reference for the long-term stability study of underground salt caverns.

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47

Madhkhan, Morteza, Armin Hamidi, and Navid Salehi. "Study on the Effects of Natural Pozzolan and Limestone Powder on Mechanical Properties of Roller Compacted Concrete Pavements." Advanced Materials Research 250-253 (May 2011): 3619–23. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3619.

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Due to high maintenance and production costs of conventional asphalt pavements in recent years, substitution of concrete pavements has been taken into account. One important factor of such pavements is the long-term performance. The substitution of pozzolanic materials with existing cement in the mixture is a common choice to improve the durability factors and to increase the long term compressive strength. Owing to this change in cementitious materials, a general anticipation of the pozzolanic behavior to be observed is that the early age compressive strength gets decreased. On the other hand, this defect will be compensated in the long-term compressive strength. Furthermore, as conventional loads of road pavements are concerned, the tensile and flexural strengths have their own importance. Regarding these two factors, the related tests were also performed and the results were analyzed. The main purpose is to find the optimum material among these 2 types of pozzolanic supplements and its percentage of substitution with the preference of having the best average strength in both long and short term performances. Altogether, the natural pozzolan had better performance than limestone powder.

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48

Chen, Wei, Fei Chang, Tao Jiao, and Qiang Luo. "Study of Long-Term Strength Experiment on Xigeda Soil." Applied Mechanics and Materials 193-194 (August 2012): 859–63. http://dx.doi.org/10.4028/www.scientific.net/amm.193-194.859.

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Xigeda Soil, as a kind of typical soil widespread in west region of Panzhihua, is widely applied to local engineering construction. Limesoil made by adding quicklime into Xigeda soil is also extensively used in wall construction of rural house building. The strength of wall material of Xigeda limesoil wall is measured in this paper through contrast test, meanwhile, strength of rammed limesoil with 1:9 volume ratio is measured on 60th day and 36th month respectively. The test result indicates that compressive strength of limesoil increased by 67% and its tensile strength also greatly increased, which is beneficial to its application in wall engineering construction. This paper also makes an analysis of limesoil mechanism of cementation and points out that Xigeda limesoil is a favorable wall material for house building.

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GUK, Dmitriy, Mikhail KAMENSKIY, Vitaliy MESHCHANOV, and Mikhail SHUVALOV. "Short-Term and Long-Term Electrical Strength of MV Fire-Resistant Cables." Elektrichestvo, no. 6 (June 19, 2024): 35–47. http://dx.doi.org/10.24160/0013-5380-2024-6-35-47.

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Yao, Weilai, Shiyong Jiang, Wei Fei, and Tao Cai. "Correlation between the Compressive, Tensile Strength of Old Concrete under Marine Environment and Prediction of Long-Term Strength." Advances in Materials Science and Engineering 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/8251842.

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Compressive strength and tensile strength are important mechanical properties of concrete. The long-term strength of concrete under real service environment is an important parameter when evaluating existing buildings, which should also be properly considered in structural design. In this study, the relationship between compressive and splitting tensile strength of old concrete existing for long period under marine environment was investigated. At a deserted harbour, concrete cores samples were drilled by pairs in site. For each pair of samples, the two cores were drilled from the adjacent location and conducted to compressive, splitting tensile test, respectively. 48 compressive and splitting tensile strengths were finally obtained. From the test results, tensile strength presents general uptrend with compressive strength, and the two parameters are well positively correlated. Exponential model generally recommended by building codes or literatures is still capable of describing the relationship between compressive and tensile strength of old deteriorated concrete, when function parameters are properly determined. Based on statistical theory and the experimental result of this study, a method for predicting long-term tensile strength of concrete is developed and an example is given, which may provide a potential way to estimate long-term concrete strength under real marine environment.

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