Global ETD Search
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 26 for “"Hydrated lime"”.
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The hydrated lime dissolution kinetics in acid mine drainage neutralization
Hydrated lime, Ca(OH)₂, has been rediscovered as an environmentally sustainable product, which could be of help in the remediation of acid mine drainage (AMD), especially in the AMD neutralization process. This is due to its ease of acquisition, affordable price and unique versatile properties such …
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Implementation of mechanistic-empirical approach for structural design of hydrated lime modified flexible pavement
… design method by the implementation of hydrated lime effect in the proposed pavement section. Enhancing the paving material performance-related properties during design is an important step to minimize the efforts, pavement layers’ thicknesses and cost as well as develop the …
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Enhancing the engineering properties of expansive soil using bagasse ash, bagasse fibre and hydrated lime
… soil stabilisation with chemical agents (e.g. lime or cement) and so on. On top of that, lime stabilisation is the most commonly used method for controlling the shrink-swell behaviour of expansive soil due to seasonal variations. Lime reacts with expansive clay in the presence of water and …
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The effect of hydrated lime on moisture susceptibility and aging of hot mix asphalt: mastic to mixture scale
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Reducing Moisture Damage in Asphalt Mixes Using Recycled Waste Additives
… solution to this problem. Currently in practice, hydrated lime and a variety of amine-based chemicals are being used as anti-stripping agents. However, as an emphasis towards sustainability has increased, waste products are now being investigated for this purpose. This thesis investigated the …
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Water absorption and salt attack resistance of coal ash brick made of different percentage of foam content
… slag (GGBS) which is activated with an alkaline (hydrated lime or Portland cement) combined with coal ash from coal-fired thermal power plant. The blended binder comprising of hydrated lime (HL) – GGBS and Portland cement (PC) –GGBS were used to stabilize the coal ash brick. Foam was used to …
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Stabilization of Soft Clay Subgrades in Virginia Phase I Laboratory Study
… Such soils can be treated with traditional lime and cement stabilization methods. Alternatives, including lignosulfonates and polymers, are available, but their performance record is mixed and solid engineering data is lacking, which prevents reliable design. The goal of this research was to …
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Design of Cold-In-Place Recycling using Superpave gyratory compactor
… performed without using additives, with 1.0% hydrated lime and 0.5% Portland cement in order to compare the impact of additives on the performance of each mixes. For all three sources of RAP, the mix design was performed in accordance with the proposed seven step mix design procedure to come …
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Crystallisation of PFA glasses
… were made, using pulverised fuel ash and silica, hydrated lime, kaolin and magnesium carbonate. Titania or ferric oxide and chromia were used as nucleants. Various crystallisation heat treatments were carried out and the nucleation and crystallisation behaviour was studied. A minimum MgO:CaO was …
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The synthesis of calcium phosphate from municipal wastewater and its application for the removal of metals from acidic effluents
… phosphate from municipal wastewater using hydrated lime was explored. The generated sludge, known as calcium phosphate, was used for the removal of heavy metals from acidic effluents. In light of subsequent stages, it is crystally clear that this study is stratified into two-phases, of …
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The utilization of paper mill wastes in the flotation of manganese ores
… was varied with either sulphuric acid or hydrated lime. Crude oleic acid from tallol was also tested as a collecting agent for the manganese dioxide in the ore, with auxiliary reagents. Runs were made varying the amounts of crude oleic acid, sodium silicate depressor, and the hydrogen ion …
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Soil suction and swell behavior of chemically treated expansive clays
… Slater, Missouri with moderate swell potential. Hydrated lime and KIS (solution containing Potash and Ammonium Lignonsulfurnate) were used as chemical stabilizers. The basic physical and chemical properties and swell potential of selected soils before and after reacting with chemical stabilizers …
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Barium carbonate treatment of sulfuric acid wastewater
… after neutralization with high calcium hydrated lime. Only the theoretical amount of barium carbonate was required at a paddle mix speed of 500 rpm for completion of the BaCO₃ - CaSO₄ reaction within an hour. The supernatant after settling was acceptable. Experimental values of specific …
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Impact of Lime on the Mechanical Properties of HMA Mixtures in Nevada
… of this research was to evaluate the impact of hydrated lime on the mechanical properties of typical HMA mixtures in Nevada. This research differed from previous studies in several respects. First, because lime is used in HMA primarily for anti-stripping benefits, previous studies rarely …
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The effects of lime on the decomposition of buried human remains. A field and laboratory based study for forensic and archaeological application.
The inclusion of lime in burials is observed in historical and archaeological records, in contemporary mass graves and forensic cases. Clearly there are controversies within the literature and there is a general misconception of the effects of lime on decomposition. Recent casework in Belgium and …
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Identification and Stabilization of Problematic Silts
… and pavement. The additives selected included hydrated lime, portland cement, and class c fly ash. A unitary set of guidelines for stabilizing problematic silts is proposed.
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GROWTH, NODULATION AND NITROGEN FIXATION OF ALFALFA (MEDICAGO SATIVA L) AND RED CLOVER (TRIFOLIUM PRATENSE L) AS INFLUENCED BY SOIL ACIDITY AND LIMING
… yield and nodulation than further application of lime. Lime pelleted alfalfa seed sown at a soil pH of 5.0 increased nodule weight and number but did not improve nitrogen fixation or yield. Increasing the soil pH by soil-incorporation of lime eliminated the advantage of pelleting. The growth …
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Estabilização de areia com adição de cal e cinza volante
… of stabilization with portlant cement or lime. The fly ash - a residual material from the burning of pulverized coal - and lime, when wetted, presents a pozzolanic reaction and cements the sand grains. It was intended to confirm research work made abroad, by using a fly ash produced in a …
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The physical properties, water sensitivity and long term durability performance of vegetal concrete
… 24 different mixes made up of different binders (hydrated lime, metakaolin and Vicat natural hydraulic lime), bio-aggregate types (hemp and rapeseed straw), a linseed oil pre-treatment and a polyacrylic acid-based viscosity modifying admixture (VMA). The mixes were characterised regarding their …
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High-performance carbonatable cementitious systems: novel materials and processing methods
… two ternary binder CCMs with wollastonite (WS), hydrated lime (HL), ordinary portland cement (OPC), and ground granulated blast furnace slag (GGBFS) were developed, and cellulose nanocrystals (CNC) were implemented to improve the fresh and hardened properties of 3D-printed CCM systems. The …
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