A number of chapters discuss new types of concrete such as autoclaved aerated concrete, high-strength concrete, sprayed concrete, fibre-reinforced concrete, lightweight concrete, self …
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With its distinguished editor and international team of contributors, Developments in the formulation and reinforcement of concrete is a standard reference for civil and structural engineers. Summarises a wealth of recent research on improving qualities such as sustainability and durabilityDiscusses new concrete types together with their ...
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LSs as dispersants in concrete show a limited water reduction capability (8–10%), with an averaged dosage of about 0.1–0.3% by weight of cement. For this reason, although LS is the most used material for the formulation of water-reducing admixtures, it is hardly used in the design of high-performance concrete.
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A constitutive model of the age-dependent concrete characteristics was formulated using a two-level formulation framework, with a material level for depicting the creep strain due to the stress history, and a mechanical level for modeling the stress change due to the time-dependent development of mechanical strain.
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Formulationand Reinforcementof Concrete Second Edition Editedby SidneyMindess Universityof British Columbia, Vancouver, BC,Canada WP WOODHEAD PUBLISHING ELSEVIER AnimprintofElsevier. Contents Listofcontributors xv Introduction xvii PartI Materials 1 1 Sustainability ofconcrete 3 SidneyMindess
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Self-compacting concrete (SCC) is a highly flowable, self-leveling, and non-segregating type of concrete that requires no form of vibration to maintain its uniformity throughout the mixture as well as being able to perform in an outstanding manner in densely reinforced structures. The main objective of this study is to investigate the primary differences in the …
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Developments in the Formulation and Reinforcement of Concrete, Second Edition, presents the latest developments on topics covered in the first edition. In addition, it includes new chapters on supplementary cementitious materials, mass concrete, the sustainably of concrete, service life prediction, limestone cements, the corrosion of steel in ...
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Concrete is the most widely-used construction material in the world. This important book summarises the wealth of recent research on improving qualities such as durability and sustainability as well as the emergence of a new generation of specialist concretes for particular applications.A number of chapters discuss new types of concrete such as autoclaved aerated …
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Self-compacting concrete formulation SCC formulation is performed according to the Japanese method. We set the G / S 0.9, the cement is 400 k/m3, the ratio (W / C + F) is set at 0.42, the …
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The formulation includes 1.0 % sodium carbonate, 2.0 % sodium silicate, 1.0 % sodium aluminate, 1.0 % EDTA, and 0.5 % glycine. The self-healing behavior of the formulation was studied. Liu et al. [23] investigated CCCW formulations using sodium silicate and sodium sulfate as precipitants, and sodium gluconate and EDTA-4Na as complexing agents ...
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9 The increasing use of Self-Compacting Concrete (SCC) in the construction industry should 10 be assured by the development of mix designs adequates to improve their fresh/hardened 11 …
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An accurate numerical model for cement slurry heat release during well cementing becomes essential in optimizing the formulation of cement slurry for gas hydrate cementing and enabling engineers to troubleshoot field problems. Temperature development during well cementing can be divided into two phases: circulation temperature during placement ...
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Developments in the Formulation and Reinforcement of Concrete, Second Edition, presents the latest developments on topics covered in the first edition. In addition, it includes new chapters on supplementary cementitious materials, mass concrete, the sustainably of concrete, service life …
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cement formulation which would be equivalent in performance to the better proprietary materials. This report deals with the development of such a formulation and also ... setting cement mortar for the repair of concrete bridge decks and roadway which could be mixed and placed in a manner similar to ordinary portland cement concrete. III. ...
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As a consequence, more knowledge-based design of concrete formulations having both a reduced environmental impact and a reliable performance need to be found. This can be seen as an exciting challenge in which the basic science dealing with cement–admixture interactions can be integrated to obtain rapid outcomes in admixture formulations.
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The hydration of cement is a chemical reaction, and so it must be treated similarly, as proposed by BaZant (1977). In this approach, which is adopted as the basis of the present formulation, one introduces the microstress, (1g(v,t), in the solidified matter (cement gel) at time t, defined as the stress at the 1693
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The formulation of the concrete was made by the method of absolute volumes by varying the W/C ratio from 0.4 to 0.7, N/S from 2.2 to 2.8 and that of the cement dosage from 350 to 450 kg/m3. The results obtained show that the density of the concrete formulated based on these aggregates of lateritic origin have a density which varies between 2000 ...
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Concrete is the most widely-used construction material in the world. This important book summarises the wealth of recent research on improving qualities such as durability and …
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Recent work carried out on the formulation and manufacture of concretes has led to the development of ultra high performance concretes (UHPC) presenting remarkable mechanical and durability properties [1], [2].However, actually, there are few applications for these concretes and their implementation is still exceptional, primarily because of their high cost, related to …
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A general formulation framework for an age-dependent constitutive equation of concrete is presented to account for the development of the elastic modulus at an early age. This is achieved by expanding the total stress vs. strain relation with respect to the time-varying elastic modulus. Two types of constitutive formulation frameworks are derived depending on whether …
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Additionally, the low cement content and high amount of pozzolanic cement replacements in the bioreceptive concrete mixture also help to reduce the embodied energy of the façade panels significantly. As cement is the most expensive constituent in concrete, this should also help reduce construction costs of the bioreceptive concrete.
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Three concrete formulations were made with a water/cement ratio of 0.54. The first concrete formulation (CSGG) is composed only of gneiss quarry aggregates, and in the second formulation, the gneiss sand is replaced by river sand (CSGS). The third concrete mix design (CSGB) is composed only of quarry aggregates of basalt type.
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Examples include the insulation and filling of cavities, LW precast concrete panels and blocks, insulation against fire, sound and heat, soil stabilization, shock-absorbing barriers for airports ...
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Supplementary cementing materials (SCMs) exhibit pozzolanic and/or cementitious properties and are used in concrete to partially replace the Portland cement component. SCMs differ in source, physical properties, and chemical composition. ... Developments in the Formulation and Reinforcement of Concrete, 2019, pp. 87-113. Mark G Alexander.
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PDF | On Apr 14, 2024, Khandokar Md Rifat Hossain and others published The Formulation of Self-Compacting Concrete Mixtures Incorporating Diverse Cement Types † | Find, read and cite all the ...
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Request PDF | The Effect of the Use of Residues (Metallic Shavings) in the Formulation of Self-Compacting Concrete in Fresh and Hardened State | Self-Compacting Concretes (SCCs) have brought ...
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In the past few decades, oil-in-water (O/W) emulsions have emerged as one of the most common formulations usually employed as mould release agents [9], [10], [11], [12].León-Martínez et al. [13] described the performance of biodegradable release agents for hydraulic concrete. Furthermore, they have compared the performance of raw vegetable oils and O/W …
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Abstract Huge quantities of sediments are dredged continuously worldwide. They are generally dumped in landfill areas, with the ensuing costs of dredging operations and in soil-groundwater pollution. The objective of this work is to study the beneficial reuse of dredged sediments in mortar and particularly to study the influence of the substitution of sand by …
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free formulations with high cement compatibilty and an attractive cost/ performance balance. Reliable Barrier against Water VINNAPAS® VAE polymer disper-sions and dispersible polymer powders are highly compatible with cement and inorganic fillers. Benefits in the formulation of flex-ible two-component cementitious waterproofing membranes are:
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In this paper an experimental study was carried out with the aim of determining the formulation of an ordinary concrete intended for the construction of slabs and engineering structures.
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A chemical formulation including: (a) at least one cement dispersant selected to disperse cementitious particles disposed in a water-based, flowable cementitious mixture, the cement dispersant including a polyphosphate; (b) a surfactant selected to reduce a surface tension of the mixture; (c) an accelerator selected to accelerate setting of the mixture; the formulation …
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The formulation of the concrete was made by the me- thod of absolute volumes by varying the W/C ratio from 0.4 to 0.7 N/S from, 2.2 to 2.8 and that of the cement dosage from 350 to 450 kg/m 3 .
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Cellular concrete is a preferred construction material due to its low density, cost and environmental benefits. The aim of this study was to find formulation proportions, its impact and implementation conditions on the behaviour of cellular concrete in hardened state.
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Here are some general guidelines on the different types of concrete and their most practical uses. Standard Concrete. The formulations used to create standard concrete can …
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The construction industry has a significant impact on the global economy, contributing largely to the Gross Domestic Product (GDP). However, the industry heavily relies on cement production, which poses significant environmental challenges [1].Cement production requires the mining of natural resources, which results in substantial emissions of greenhouse …
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Developments in the Formulation and Reinforcement of Concrete, Second Edition, presents the latest developments on topics covered in the first edition. In addition, it includes new chapters on supplementary cementitious materials, mass concrete, the sustainably of concrete, service life prediction, limestone cements, the corrosion of steel in concrete, alkali-aggregate …
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Gandomi et al. (2010) have proposed a novel approach for the formulation of elastic modulus of both normal-strength concrete (NSC) and high-strength concrete (HSC) using a variant of GP, namely linear genetic programming (LGP). They have developed the models based on experimental results collected from the literature and carried out a ...
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