The durability of concrete
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Part 1 of ebook "CONCREEP 10: Mechanics and physics of creep, shrinkage, and durability of concrete and concrete structures" provides readers with contents including: interaction of concrete creep, shrinkage and swelling with water, hydration, and damage, nano-macro-chemo; shrinkage due to colloidal force interactions; influence of aggregate restraint on volume changes, experiments and modelling; aging and deterioration of concrete structures, learning from the past, assessing the present, and predicting the future; science or magic; the meso-scale texture of cement hydrate gels, out-of-equ...
803p mothoiphong 28-06-2024 2 1 Download
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Part 2 of ebook "CONCREEP 10: Mechanics and physics of creep, shrinkage, and durability of concrete and concrete structures" provides readers with contents including: steel corrosion in reinforced concrete mechanisms, assessment, measures, and forecast models; cracking behaviors caused by the corrosion of reinforcing bars in rc columns; evaluating the performance of recycled aggregate concrete; nanotechnology applied to concrete; towards the next generation of standards for the service life of cement-based materials and structures mini-symposium of COST action TU1404; microstructure and mic...
831p mothoiphong 28-06-2024 1 1 Download
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Ebook "Durability design of concrete structures: Report of RILEM technical committee 130-CSL" is the first systematic attempt to introduce into structural design a general theory of structural reliability and existing calculation models for common degradation processes. It covers both the theoretical background and practical design for service life and includes worked examples which highlight the application of the design procedure and methods.
93p dongmelo 26-05-2024 4 2 Download
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This paper reviews the durability of concrete containing pozzolans in marine environments, which mainly focuses on resistance to chloride ion penetration and sulfate attack. The results of previous literature showed that the main ions of seawater are almost similar but the salinity varies with location. The mechanism of chemical reaction between seawater and concrete was carefully reviewed and explained.
14p visharma 20-10-2023 5 3 Download
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This article presents the results of a study that evaluated the effects of using sea sand with varying contents of chloride ions on the properties of concrete, including physical and mechanical properties as well as durability.
16p viengels 25-08-2023 7 4 Download
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Continued part 1, part 2 of ebook "Civil engineering materials" has presents the following content: testing wet and hardened concrete; creep, shrinkage, and cracking of concrete; admixtures for concrete; durability of concrete structures; production of durable concrete; assessment of concrete structures; mortars and grouts; special concretes; alloys and nonferrous metals; bituminous materials; adhesives and sealants; comparison of different materials; photocatalytic admixtures;...
267p dieptieuung 20-07-2023 12 2 Download
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Detailed objectives of this study are: to analyze the risk of failure and probability of failure of existing reinforced concrete bridges qualitatively and quantitatively; to consider the effects of interactions among various deterioration parameters and among bridge components on system failure; to identify major durability related distress mechanisms of deterioration of reinforced concrete bridges and model the subsequent risk of failure of bridge system;…
163p runthenight07 01-03-2023 4 2 Download
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This is due to the reduction of calcium hydroxide and the increase of secondary CSH in the cement matrix from the pozzolanic reaction of a mineral admixture. The result of the study with modern experiment methods confirmed the improvement of strength and durability for hardened cement using mineral admixture, thereby ensuring the good applicability of the additional admixtures used in concrete of marine structures.
8p vimalfoy 08-02-2023 6 2 Download
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Primary and secondary containment structures are the major components of the nuclear power plant (NPP). The performance requirements of the concrete of containment structures are mainly radiological protection, structural integrity and durability, etc.
8p vironald 15-12-2022 8 3 Download
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Steel Fiber-Reinforced Concrete (SFRC) is an advanced material studied and used in some developed countries in the world in recent years. The characteristics of this concrete are intensive compression, high tensile and tolerance strength, higher repeated loads, and long-term durable stability.
6p vibentley 08-09-2022 8 4 Download
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The aim of the work "Stochastic service life prediction of RC girders subjected to chloride induced corrosion – Shear limit state" presented in this thesis is service life prediction of corroded reinforced concrete girders, which forms an important part of durability design. The scope of this work is limited to shear limit state considering the chloride induced corrosion of reinforcement as the degradation mechanism. The review of literature shows that the service life estimation of reinforced concrete bridges exposed to marine environment is an active area of research.
288p runordie3 06-07-2022 18 1 Download
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In brief, the results obtained from this study demonstrated the feasibility of this method for applying in real condition in improving strength of RAC. However, in order to apply this technique in the field, it is necessary to conduct researches on durability of concrete.
3p vipriyankagandhi 27-07-2022 4 2 Download
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Applying nano-silica, as cementitious materials in concrete mixes, is expected to be an improving technique, from both mechanical properties and durability points of view. Th is study aims to analyse the characteristics of fractures in concrete beams incorporating nano - silica in bending tests, such as fracture energy, characteristics of crack length, and crack propagation.
6p vistephenhawking 26-04-2022 8 1 Download
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Energy harvesting technology generating electrical energy from structural responses has been in the spotlight recently because of the development of self-powered autonomous wireless sensor systems. This study proposed and tested a high-sensitivity, high-durability, low-cost vibration power-generating device using a magnetostrictive element (Fe-Ga alloy) on a real-scale prestressed concrete girder to investigate its practical performance.
4p viwilliamleiding 10-12-2021 12 1 Download
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Determine the coefficient of water permeability, waterproofing marks, chloride ion diffusion coefficients of some types of concrete commonly used in bridge construction subjected to pre-compressive and direct-compression loads. Develop a predictive model for life expectancy using reinforced concrete bridges taking into consideration the effect of the load according to the criteria of initial corrosion of reinforcement in concrete. Application of life expectancy for the structure of reinforced concrete bridges.
27p kequaidan7 01-09-2020 28 2 Download
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Rainfed agriculture can be protected by adopting farm ponds. The harvested runoff water in a farm pond creates salinization / water logging problems so, it has to be lined to control the seepage losses. The article presents a review on the type of lining materials viable and to explore for a cost effective sealant which can be adapted. In comparison to clay lining, bentonite, LDPE and HDPE, HDPE in combination with concrete increases the durability along with the 100% seepage control with benefit cost ratio for HDPE lining in combination with concrete showed highest value of 10.4:1.
10p angicungduoc5 14-06-2020 14 0 Download
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This study synthesizes the use of chemicals to prevent one of common concrete durability problems, alkali-silica reaction (ASR), and can help researchers (i) identify widely used potential chemicals and evaluate these chemical solutions to prevent ASR with proper understanding of mechanisms, and (ii) to identify the research gaps in order to develop guidelines and implementation plan on the use of these chemicals for future research.
8p tohitohi 19-05-2020 18 1 Download
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The use of cement concrete as a stronger and more durable material than asphalt concrete in construction of the pavements has been increased during the past decades. This review paper investigates the effect of various input variables for the design of continuously reinforced concrete pavements.
16p tohitohi 19-05-2020 8 0 Download
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The article is devoted to some aspects of research of hostile environment influence on the concrete durability. The mechanism of formation of chaotically diversified difficult structure is described. Chemical interactions of cement with active components of diffusion in steam space are examined.
7p tohitohi 19-05-2020 11 0 Download
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Concrete members used for protecting seadike slope have to be suffered from a severe attack caused by both chemical composition of seawater and mechanical action of wave and current, leading to the decrease in durability and lifetime rapidly. In order to address this problem, this paper presents the method by using a combination of various types of admixtures to improve both corrosion and abrasion resistance for concrete, thus producing the product with higher durability and extending longer lifetime.
9p caygaolon 31-10-2019 12 0 Download