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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"Supplementary Cementitious Materials"”.
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EFFECTS OF DEICING SALTS ON THE DURABILITY OF CONCRETE INCORPORATING SUPPLEMENTARY CEMENTITIOUS MATERIALS
… of concrete mixtures incorporating one of two supplementary cementitious materials (SCMs), slag cement or Class C fly ash, exposed to sodium chloride (NaCl), calcium chloride (CaCl2), or magnesium chloride (MgCl2) is evaluated based on damage due to wetting and drying and scaling, with the goal …
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Experimental studies of sorption and transport of moisture in cement based materials with supplementary cementitious materials
Most deterioration processes in cement based materials are closely related to moisture sorption and moisture transport properties. Therefore, it is important to study these properties, both theoretically and practically. This work is an experimental investigation in this field. Nowadays, the cement …
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Chloride binding and desorption mechanism in blended cement containing supplementary cementitious materials exposed to de-icing brine solutions
… chloride desorption mechanisms in different cementitious systems exposed to de-icing brines, and (3) analyze pH and compositional changes in blended pastes under chloride contamination and carbonation. First, factors impacting chloride binding measurements were identified, such as sample form …
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A review on the efficiency of different supplementary cementitious materials as a partial replacement for Portland cement in concrete
… researchers have explored the use of some waste materials and naturally occurring minerals as a partial replacement for cement in concrete. These materials are often referred to as supplementary cementitious materials (SCMs). Apart from the potential benefits of these SCMs for the properties of …
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EFFECT OF CRACK-REDUCING TECHNOLOGIES AND SUPPLEMENTARY CEMENTITIOUS MATERIALS ON SETTLEMENT CRACKING OF PLASTIC CONCRETE AND DURABILITY PERFORMANCE OF HARDENED CONCRETE
… The effects of crack-reducing technologies and supplementary cementitious materials on plastic settlement cracking and the durability of concrete subjected to freezing and thawing were evaluated. The study of settlement cracking included 86 concrete mixtures containing internal curing (IC), a …
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Development and Structural Performance Assessment of Low-Carbon Concrete Using Recycled Concrete Aggregates and Secondary Materials
… of recycled concrete aggregates (RCA) and supplementary cementitious materials (SCMs) as sustainable material alternatives to conventional concrete materials. Extensive materials testing and analysis of existing literature found that RCA sources possess up to 21% lower bulk specific gravity …
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High Strength Pervious Concrete
… furnace slag for a portion of the cement. These materials have all been used successfully as supplementary cementitious materials in structural concrete mixes. <br/><br/>This study is divided into two parts: <br/><br/>1- Production of Pervious Concrete using Conventional Cementitious …
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Development of a new test protocol for the permit Ion migration test
… applicability for testing concretes containing supplementary cementitious materials, by repeating the validation study on concretes containing such materials. Furthermore, there was a need to redesign the apparatus to make it more reliable and user-friendly for site applications. Therefore, a …
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Characterization and performance of eco and crack-free high-performance concrete for sustainable infrastructure
… is proportioned with high content of recycle materials. Two classes of Eco-HPC are designed for: (I) pavement (Eco-Pave-Crete); and (II) bridge infrastructure (Eco-Bridge-Crete). Eco-HPC mixtures were designed to have relatively low binder content up to 350 kg/m<sup>3</sup> and develop high …
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Design and performance of cost-effective ultra-high performance concrete for prefabricated elements
… concrete (UHPC) incorporating high volume of supplementary cementitious materials and conventional concrete and masonry sands; (2) developed UHPC with adapted rheology incorporating lightweight sand, hybrid fibers, and nanomaterials with improved properties; (3) design prefabricated UHPC …
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High-volume recycled materials for sustainable transportation infrastructure
… concrete made with high-volume of recycled materials in transportation infrastructure. The main focus was to develop mixtures for rigid pavement construction. A variety of fine and coarse recycled concrete aggregates (RCA) were investigated. The feasibility of replacing 50% of Portland …
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Design and performance of cost-effective ultra high performance concrete for bridge deck overlays
… of the pavement. The UHPC was optimized using supplementary cementitious materials (SCMs), proper combinations of sands, and adequate selection of fiber types and contents. Packing density studies included paste, sand, and fiber combinations. The robustness of optimized UHPC mixtures to …
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The productive reuse of coal, biomass and co-fired fly ash
… Therefore, this research examines their use as supplementary cementitious materials (SCMs) in concrete and as precursors for alkali-activated geopolymers. Toward their potential use as an SCM, after characterizing these ashes assessing their compliance with ASTM C618 requirements, their impact …
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Utilising Waste Paint and Waste Glass in Concrete
… Concrete mixes incorporating waste glass and supplementary cementitious materials weretested to find an optimum mix based on fundamental properties such as air content, compressive and flexural strength, and most importantly the problematic alkali silica reaction. The use of electron …
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Development of low-clinker concrete: partial replacement of cement with calcined clay and limestone, based on selected African raw materials
… is the use of blended cement. The well-known supplementary cementitious materials such as slag and fly ash are limited in most African countries. An attractive option is to produce LC3 binders, which consist of ground limestone, calcined kaolinite clay, and cement. In this study, the …
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Advancements in concrete material sustainability : supplementary cementitious material development and pollutant interaction
Calcined clay and fly ash supplementary cementitious materials (SCMs) used in cement based materials were examined for their chemical and mechanical performance, as well as their pollutant interaction. This dissertation addresses three primary research questions, namely: (i) can zincite additions …
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Development of the materials, construction, and maintenance phases of a life cycle assessment tool for pavements
… with collaborative studies investigating the materials, use, and end-of-life phases. A tool verification study investigated the environmental impacts of the materials, construction, and maintenance/rehabilitation phases for a rigid pavement roadway. Cement, which had the highest impact for …
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Calcium-Silicate-Hydrate in cementitious systems : chemomechanical correlations, extreme temperature behavior, and kinetics and morphology of in-situ formation
… chemical composition of cement clinkers and supplementary cementitious materials, water/cement ratios, and hydration temperatures, we prepare cement pastes with different C-S-H of different C/S ratios. We use nanoindentation and X-ray spectroscopy to respectively measure the mechanical …
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AI-powered Data Mining for the Development of Sustainable Concrete Materials
… the development of more sustainable concrete materials. Focusing on concrete manufacturing, we develop AI-powered methodologies tailored to real-world industrial data and complex scientific literature. For industrial data mining, we propose to incorporate interpretability and realistic …
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Cementitious stabilization of soils in the presence of sulfate
… and air. Molds were prepared with 5% to 20% cementitious material. The cementitious materials were Type I Portland cement, lime, and supplementary cementing materials (SCM) such as granulated blastfurnace slag (BFS), Class C fly ash (CFA), and an amorphous silica (AS). The expansion of the …
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