Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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2.1 Materials. Aggregate: Crushed natural sand with fineness modulus of 3.9 was used.. Solutions: Sodium hydroxide (NaOH) and potassium hydroxide (KOH) were both used in the activation process of the synthesized geopolymer.The concentration of the solutions was 12 M according to the results reported in an earlier study [].Ceramic …
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Geopolymer binders offer a possible solution for several problems that facing the current cement industry. These binders exhibit similar or better engineering properties compared to cement and can ...
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Initially normal concrete with ingredients Cement, Water and Aggregates are proportioned for M40 concrete as trial mix as per IS-10262 code. As shown in Table 3, M1 & M2 are trial mixes prepared by using OPC with Natural sand and M-Sand as fine aggregate respectively.M3 and M4 are Geo-polymer Concrete mixes made of 50% …
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Geopolymer concrete has emerged as a promising alternative to conventional Portland cement-based concrete due to its enhanced sustainability and durability 1.
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Experimental study of geopolymer concrete with recycled fine aggregates and alkali activators. ... SSW from a sodium silicate production facility has substituted traditional crushed granite coarse aggregate (CA). ... For the manufacture of concrete, river sand with a density of 2.7 g/cm3 and gravel of 20 mm and 10 mm with a density of …
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In this study, waste bricks and concrete were crushed with a jaw crusher and were then passed through sieve No. 50 (300 µm) to get RBP and RCP, which were then utilized as binders to make brick ...
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This paper developed a lightweight aggregate geopolymer concrete (LAGC) with shale ceramsite. 18 groups of LAGC specimens with 3 sand ratios (30%, 40% and 50%) and 6 aggregate contents (10%, 20%, 30%, 40%, 50% and 60%) were prepared. ... Large-scale spalling and penetration cracks appear on the surface of geopolymer …
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This study examined the effect of various design parameters on the relationship between compressive strength and ultrasonic pulse velocity (UPV) of geopolymer concrete. To prepare the data set, a series of samples were made with increasing alkaline activator liquid to binder (AAL/B) ratios and varying densities. The …
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Abstract. Geopolymer recycled aggregate concrete (GPRAC) is a new type of green material with broad application prospects by replacing ordinary Portland cement with …
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Aconcrete mix with artificial sand, Geopolymer sand & natural sand with different proportions were studied .The experimentation M40 concrete mix was designed for replacement of geopolymer sand and ...
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The original RCAs were produced after crushing and sieving the waste concrete using an experimental beam in Guangxi Province. ... These reasons explain the reduction in compressive strength for the sea sand geopolymer concrete at an early stage. As shown in Figure 5 b–d, since the fly ash particles were rarely observed, ...
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1. Introduction. Concrete is a material which stands next to water in global usage. About 60 to 80 percent of the concrete is occupied by fine aggregate and coarse aggregate [1,2,3].River sand as fine aggregate and crushed granite stone as coarse aggregate are the most commonly used materials in concrete.
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The Brisbane West Wellcamp Airport is a significant milestone in civil engineering. It is the world's largest geopolymer concrete project and was built with about 40,000 m 3 (100,000 tonnes) of geopolymer concrete, making it the largest application in the world and saved 6,600 tonnes of carbon emissions in the construction of airport. The geopolymer …
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The crushed sand is . of cubical shape with groun ded edges, ... Nagajothi S, Elavenil S,"Strength Assessment of Geopolymer Concrete Using M-Sand"2016,International of Chemical Sciences, 14(SI),pp ...
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concrete or mortar and when the particles of the granular material are so fine that they pass through a 4.75mm sieve, it is called fine aggregate. M- SAND Manufactured sand (M-Sand) is a substitute of river sand for concrete construction. Manufactured sandis produced from hard granite stone by crushing. The
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Presently crushed sand or high volume fly ash are used as natural sand replacement, however geoploymer fly ash sand could be better environment friendly replacement. ... [15]. Geopolymer concrete has been reported to achieve good mechanical strength and durability properties [16], [17], [18]. However most of the studies reported …
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Geopolymer concrete (GPC) is one of the sustainable means to reduce CO 2 emissions and energy utilization during the production and utilization of cement in the construction industry [35], [36]. Recently, the use of geopolymer (GP) in concrete as sustainable materials has been increased as shown in Fig. 3. GP concrete performance …
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Furthermore, using crushed sand and other industrial byproducts results in waste being dumped into the environment. ... India, provides steel mill slag in sand replacements for geopolymer concrete. The slag appears to be like a particle of granular black glass. Sand is comparable in particle sizes. The slag is black and glassy in the …
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Authors of studied the mechanical properties of FA-based GPC under elevated temperature by adding crushed sand, river sand, and granite and basalt aggregates as aggregate …
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As shown in Fig. 2, the slump value of lightweight geopolymer concretes (LWGCs) containing PA is in the range of 201–263 mm, and this exceeds that of LWGCs containing recycled CA by approximately 15–24% and by 5–22% for control geopolymer concrete (CGCs) containing crushed limestone and river sand (NA). This was …
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ing aggregates made by crushing the stones into smaller sand sized shaped particles, and then washed completely and graded them and used as construction aggregate. For building purpose, it is a preferable option to river sand. Control and geopolymer concrete were made with crushed aggregate sizes of 20 and 12 mm.
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Geopolymer concrete is sustainable, economical, eco-friendly, durable, and high-strength concrete. Geopolymer is a name for the bonding that occurs during the binding of materials in alkaline ...
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The coarse RCAs with a maximum particle size of 20 mm were supplied from ResourceCo in South Australia. Fine aggregates were river sand (nonreactive) with a maximum particle size of 2 mm and multicolor crushed glass sand with a maximum particle size of 1.19 mm. Figure 1 shows the aggregates particle size distributions. The glass …
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Concrete cubes of size 100 × 100 × 100 mm, Cylinder specimen of size 150 mm diameter and 300 mm height and Prism specimen of size 100 ×100 × 400 mm were prepared for both the Geopolymer ...
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The current study is aimed to evaluate and critically analyze the properties of Light Weight Geopolymer Fly Ash Sand (LWGFAS). LWGFAS has been prepared by geopolymerisation of the fly ash.
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Utilization of different materials are M-sand, E-waste, waste crushed glass, replaced as fine aggregate. These materials used in concrete to prevent environment and land filling disposal problem. ... The increasing workability with increasing waste crushed glass in geopolymer concrete. The waste crashed glass which has less water …
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Geopolymer recycled aggregate concrete (GPRAC) is a new type of green material with broad application prospects by replacing ordinary Portland cement with geopolymer and natural aggregates with recycled aggregates. This paper summarizes the research about the mechanical properties, durability, and microscopic aspects of …
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As shown in Fig. 2, the slump value of lightweight geopolymer concretes (LWGCs) containing PA is in the range of 201–263 mm, and this exceeds that of LWGCs containing recycled CA by approximately 15–24% and by 5–22% for control geopolymer concrete (CGCs) containing crushed limestone and river sand (NA).
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Geopolymer concrete is a type of concrete that is made by reacting aluminate and silicate bearing materials with a caustic activator. Commonly, waste materials such as fly ash or …
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The workability and compressive strength of high-strength geopolymer concrete have been carried out and the results shown in Figs. 5 and 6 as under. Workability of high-strength geopolymer concrete containing river sand is high as compared to high-strength manufactured sand concrete because the moisture content …
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The compressive strength of geopolymer concrete increased when the sand and binder ratio increased from 0.25 to 0.5 (Wazien et al., 2016). 6.2.5. Additives, nano-materials and fibers. Adding SF into geopolymers can improve mechanical strength, but excessive SF is harmful to geopolymers (Cheah et al., 2019).
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Mahesh Patel et al. (2013), studied the Strength of High Performance Concrete with GGBS and Crusher Sand by replacing the fine aggregates by crusher sand and cement by CGBS. ... Geopolymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. Fly Ash, a byproduct of coal …
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Geopolymer concrete based on Low Calcium Fly Ash has proven to be extremely cost-effective over Portland cement concrete, eliminating harmful greenhouse gases responsible for environment exploitation. ... Crushed sand with grounded borders is of cubic form, washed and listed as a building material. Sand created (M−Sand) is …
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The geopolymer concrete beam-column joints were tested to have better ductility, greater energy absorptivity, and higher toughness with the inclusion of steel fibers.
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