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Showing 1 to 20 of 31 for “"ground granulated blast furnace slag"”.
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Engineering properties of sulphate-bearing clay soils stabilised with lime-activated ground granulated blast furnace slag (GCBS)
… research studied the effects of the addition of ground granulated blast furnace slag (ggbs), activated by 2% calcium hydroxide (Ca(OH)<sub>2</sub>, on the strength, permeability and porosity development of a laboratory prepared clay mix (kaolinite with and without 6% gypsum) and a natural …
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Performance of No Vibration/No Admixture Masonry Grout Containing High Replacement of Portland Cement with Fly Ash and Ground Granulated Blast Furnace Slag
… of Portland cement with Type F fly ash and/or ground granulated blast furnace slag (GGBFS). The percentages of Portland cement replacement evaluated were 0%, 50%, 60%, and 70% for Type F fly ash. The percentages of Portland cement replacement evaluated were 0%, 60%, 70% and 80% for Type F fly …
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DEVELOPMENT OF SELF-HEALING SUSTAINABLE CONCRETE USING RECYCLED MATERIALS
… the autogenous healing of concrete blended with ground granulated blast furnace slag (GGBS) and polyvinyl alcohol (PVA) fiber in terms of flexural strength recovery and crack sealing behavior. 50% GGBS-blended concrete was found to have good autogenous healing ability and the addition of PVA …
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Investigations into the recycling of quarry wastes from the South East of England
… other waste products including Cement Kiln Dust, Ground Granulated Blast-furnace Slag and Pulverized Fuel Ash. The mixes were subjected to a CO2 atmosphere for varying lengths of time, to determine their carbonation potential and optimum CO2 exposure time, in order to produce pellets with optimum …
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High Strength Pervious Concrete
… by-products like fly ash, silica fume, and ground-granulated blast 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- …
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Mitigating alkali silica reaction in recycled concrete
… was found that fly ash, silica fume and ground granulated blast furnace slag (GGBFS) were effective in mitigating ASR in RCA concrete. Compared to conventional concrete, slightly higher dosages were typically required. The ASTM C 1260/1567 test correlated well with ASTM C 1293 with few …
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Investigation of Concrete Mixtures to Reduce Differential Shrinkage Cracking in Composite Bridges
… lightweight aggregates (SLWA), one including ground granulated blast furnace slag (GGBFS), and one incorporating both were tested. Preliminary results show that the inclusions of SLWA into a concrete mixture reduced shrinkage by 25% and overall tensile stress by 38%.
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The Evaluation of Permeable Cementitious Media for Nutrient Removal
Excessive amounts of nutrients in surface and ground waters can interfere with the quality of aquatic and human life. Permeable pavement systems have been studied for contaminant removal, but there are limitations to the current state of knowledge. Laboratory studies were utilized to fundamentally …
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The adsorption of phenolic and organotin compounds by clays and cation exchanged clays
… studies of 2-chlorophenol show that a blend of ground granulated blast furnace slag and ordinary Portland cement attenuates 2-chlorophenol more effectively than ordinary Portland cement alone. Tetramethyl ammonium- (TMA-) and tetramethyl phosphonium- (TMP-) montmorillonites were exposed to …
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The Development of Sustainable Lime-Based Building Wall Components
… these two binders were partially replaced with Ground Granulated Blast-furnace Slag (GGBS) an industrial by-product from the manufacture of steel. During the preliminary phase of the research, two different approaches to establishing the moisture demand during compaction of test specimens were …
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Complete stress-strain characteristics of high performance concrete
… chemical and mineral admixtures such as fly ash, slag cement, and silica fume, ground granulated blast furnace slag, as well as air-entraining agents are commonly used in the field construction. It has been found that high perforinance concrete can improve the workability, ultimate strength and …
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Development of low-clinker concrete: partial replacement of cement with calcined clay and limestone, based on selected African raw materials
… 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 suitability of kaolinite clays for use in LC3 binders …
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Selecting material constituents and proportions for specific roller-compacted concrete mechanical properties
… packing density and RCC properties. Fly ash or ground granulated blast furnace slag replacement of cement statistically reduced the early-age RCC strength and likely would delay opening the RCC pavement to traffic. In general, fracture properties of RCC with virgin and recycled aggregates were …
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Durability of alkali-activated calcined clay - GGBFS concrete against carbonation and chloride diffusion
… low-grade calcined clay blended with Ground Granulated Blast Furnace Slag (GGBFS) through tests assessing the performance in chloride and carbonation-rich environments. The results show that the inclusion of GGBFS as a rich calcium source, notably improves the mortar microstructure and …
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Development of the materials, construction, and maintenance phases of a life cycle assessment tool for pavements
… cementitious materials (SCMs) such as fly ash or ground granulated blast furnace slag (GGBFS) to reduce total energy and emissions by 14% to 29% for cement replacements of 35%. Construction impacts were relatively low compared to the materials phase, but practices such as two-lift paving can …
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Influence of curing on the properties of concretes and mortars in hot climates
… with and without pulverized fuel ash (pfa) and ground granulated blast-furnace slag (ggbs). Three 00 environments were chosen as follows: 1) 20C+70%RH, 2) 35C+70%RH, and 3) 45C+30%RH. To simulate in-place casting, the initial mix temperatures were controlled to be as close as possible to that of …
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High-performance carbonatable cementitious systems: novel materials and processing methods
… 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 results demonstrate that the degree of carbonation of the …
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Stabilisation of sulphide rich soil: problems and solutions
… the effects of a secondary stabilising agent (ground granulated blast furnace slag - GGBS - incorporated at various percentage additions (2%, 4%, 6% or 8%)) on the strength development, linear expansion and durability of mellowed, lime-modified LOC is presented. For comparative purposes, …
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Effect of carbonation on bound chlorides in cementitious and alkali activated binders
… of aluminosilicate industry by-products, such as ground granulated blast furnace slag, fly ash or calcined clays, can provide a viable binder system that can contribute towards the cement market. Activators such as sodium hydroxide and sodium silicate or their potassium equivalent are widely used. …
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Remediation of contaminated land and solutions with binders derived from waste material.
… cement (OPC), lime, magnesia, fly ash (PFA), or ground granulated blast furnace slag (GGBFS) were added to stabilise the contaminant. The optimum amounts were determined by fly ash added gradually to contaminated soil until full reduction of leachable lead was reached. Five grams of the soil …
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