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Jul 06, 2020 Workability of geopolymer concrete using (a) crushed stone sand as fine aggregate (b) copper slag as fine aggregate. 3.2 Properties of geopolymer concrete in hardened state. Properties of geopolymer concrete in hardened state has been done to assess the compressive strength of cube specimens having a size 150mm x 150mm x 150mm.
1 Type Crushed 2 Specific Gravity 2.78 3 Bulk Density 1765 Kg/m3 4 Maximum Size 20mm FLY ASH GGBS FINE AGGREGATE (M - SAND) COARSE AGGREGATE ... Geopolymer Concrete MIX ID M-SAND BINDER % FLY ASH GGBS GPM1 100 100 - GPM2 100 90 10 GPM3 100 80 20 GPM4 100 70 30 GPM5 100 60 40 Conventional Concrete Specimen ...
geopolymer concrete replacing sand by copper slag An Experimental Study on Partial Replacement of Cement by ... Palm-fiber fly ash cement mortars can be used to directly replace portland cement up to 10 percent by weight with a 12.75 ratio of binder to sand and a water to binder ratio of 0.485.
But in crushed sand-concrete the water required is more and the workability is less as compared to river sand-concrete. Less workable concrete affects ... Similarly the mix 4 to 12 is for geopolymer concrete with river sand, treated sea sand and untreated sea sand with 8, 10 and 12 molarity of NaOH. The procedure of mixing and casting of geopolymer
Geopolymer concrete shows significant potential to be a material for the future because it is not only environmentally friendly but also possesses excellent mechanical properties. ... Concrete, being a physical mixture of cement, aggregate (sand and crushed rocks), and water, is the key construction material across the world. There is now a ...
the geopolymer aggregate concrete. Moreover, the observed test results are compared with a similar concrete made with natural crushed granite coarse aggregate. SIGNIFICANCE OF RESEARCH This research reports the replacement of natural crushed aggregate with manufactured geopolymer coarse aggregates in concrete.
Geopolymer concrete is such a one and in the present study, to produce the geo-polymer concrete the Portland cement is fully replaced with fly ash and Ground granulated blast-furnace slag. Fine aggregate is replaced with quarry dust and M.Sand. Coarse Aggregate (20mm) are replaced with 10mm Aggregate Alkaline liquids are
Dec 17, 2019 In order to reduce both these problems, an eco-friendly solution using sea sand and crushed sand as alternative fine aggregate in geopolymer concrete (GPC) is proposed. In this study, an M40 grade GPC with fly ash and Ground Granulated Blast Furnace Slag as binder and a combination of hydroxide and silicates of sodium is used as reaction liquid.
B. Mixing of Geopolymer concrete The fly ash, fine aggregates and coarse aggregates were mixed in a container and then the alkaline solution was added to prepare the geopolymer concrete. The geopolymer concrete was placed in 100 mm cube moulds. The Geopolymer concrete was dark in colour with shiny appearance. The mix
Jun 24, 2021 It can be seen from Figures 8 and 9 that no matter what activation method is adopted when the sand ratio changes from 0.25 to 0.37, the 3 d and 7 d compressive strength and flexural strength of coal gangue geopolymer concrete increase with the increase of sand ratio when the sand ratio is greater than 0.37, the 3d and 7d compressive strength ...
Powder, GPC-Geopolymer Concrete, FA-Flyash, M-Sand- ... from hard granite stone by crushing10. The crushed sand is of cubical shape with grounded edges, washed and graded to
geopolymer concrete is used from theory of mix design ... Locally available river sand is used as fine aggregate in the mixes. Crushed granite stones of size 20mm are used as coarse aggregate. As per IS 2386 (Part III)-1963, the ... calculate crushing
Jan 15, 2020 manufacture geopolymer concrete using Iraqi metakaolin (MK) as source material, and present the results of the physical and mechanical properties of MK-geopolymer concrete made by substituted the natural coarse aggregate by crushed waste clay bricks at different volume rates (0, 10, 20, and
Jul 06, 2020 5.png. Figure 5. Microstructure of geopolymer concrete using (a) crushed stone sand as fine aggregate (b) copper slag as fine aggregate. It can be seen from Figure 5 (a) and Figure 5 (b) that adding UFGGBFS to geopolymer concrete as a replacement to fly ash resulted in an enhanced and dense microstructure.
Geopolymer concrete is such a one and in the present study, to produce the geo-polymer concrete the Portland ... produced from hard granite stone by crushing. The crushed sand is of cubical shape with grounded edges, washed and graded to as a construction material. The size of manufactured sand (M-Sand) is less than 4.75mm.
Jan 01, 2016 Geopolymer concrete samples were produced by mixing this binding material with river sand and crushed sand aggregates. Test specimens were immersed in magnesium sulfate solutions (by weight 3%, 5% and 7%) for various periods of time and the durability of geopolymer concrete was investigated. The residual compressive strength (90 and 180
The strength of Geopolymer Concrete is compared with normal cement concrete and found the strength of Geopolymer concrete with M-sand is high. Hence, pollution free Geopolymer concrete with M-sand can be an alternative to ordinary Portland cement concrete. Construction is one of the fast growing fields worldwide.
They concluded Performance Concrete with GGBS and Crusher Sand by maximum of 25% loss in compressive strength was replacing the fine aggregates by crusher sand and cement observed when geopolymer exposed to a temperature of by CGBS. It was concluded that the 20% replacement of 500 C for two hours.
Nov 10, 2018 As shown in Fig. 2, the slump value of lightweight geopolymer concretes (LWGCs) containing PA is in the range of 201263 mm, and this exceeds that of LWGCs containing recycled CA by approximately 1524% and by 522% for control geopolymer concrete (CGCs) containing crushed limestone and river sand (NA). This was reasonable
Geopolymer concrete exhibits good strength and durability properties than OPC concrete. Geopolymer concrete is a potential material for future because it is not only eco friendly but also possess good strength and durability properties. Application of geopolymer concrete in precast elements has high potential and needs to be explored.
Apr 14, 2015 Advantages Of Addition Of Crusher Dust In Geopolymer Concrete The availability of natural sand is scarce and Costly thus crusher dust can be used as a replacement to natural sand The extraction of natural sand is a major environmental concern so when crusher dust is used, the burden on the environment is lessened The disposal of crusher
Lightweight geopolymer fly ash sand an alternative to fine aggregate for concrete production P N Ojhaa, *Brijesh Singh b, ... reported an increase in compressive strength of concrete mix by 1015%, when crushed stone sand was used as a 100% replacement of natural sand. Such results led to increase
Estimation for 1cum geopolymer concrete mix Sr. No. Name of materials Quantity 1 Fly ash 5370 gms 2 Sand 5907 gms 3 Aggregate 1926 gms 4 Activator solution 1920 ml 2.1.6 Mixing curing procedure Firstly prepare the dry mix of geopolymer concrete by using fly ash, sand and aggregates with the help of trowel for five minutes.
The density of geopolymer concrete is found as 2330 kg/m3. The 7 and 28 days average compressive strength of geopolymer concrete cubes given in Figure 2. Figure 2. Average compressive strength of geopolymer concrete In contrast to river sand in the 5050 range, the strength variation with respect to river sand and
Jul 16, 2021 This paper presents the flexural behaviour of concrete containing ground granulated blast furnace slag (GGBS) as a binder, manufactured sand (M-sand) as a fine aggregate, and coconut shell (CS) and crushed stone aggregate (CSA) as coarse aggregates. Alkaline activator sodium hydroxide with 10 molarity and sodium silicate were used in a
coarse aggregates. Similarly another artificial material called m anufactured sand (M -Sand) is a lso used as the fine aggregate against the normal river sand. The durability of Geopolymer Concrete with M -sand was studied by casting cubes of size 100 x 100 x 100 mm. The c ube specimens were immersed in a cid, alkaline, sulphate
Aggregates contribute more than 65% for producing geopolymer concrete. The Eco-friendly sand material and Cost effective material called Manufacture sand was used as a partial replacement material for fine aggregates by various percentages. Manufacture sand is generally produced by crushing, screening and washing a rock in desired shapes and sizes.
sand 1, 2. Compressive strength is a very important in-dicator for evaluating the performance of geopolymer concrete. Many factors aect the compressive strength of coal gangue-based geopolymer concrete. Wang et al. 3 proved that PS concretes have comparable compressive strengthswithPConesat180days.Shengetal.4discussed
producing geopolymer concrete. The Eco-friendly sand material and cost effective material called manufacture sand was used as a partial replacement material for fine aggregates by various percentages. Manufacture sand is generally produced by crushing, screening and washing a rock in desired shapes and sizes.
applied to geopolymer concrete with same simplicity and convenience. The progressive damage in the specimens are reflected in both pulse velocity in time domain and rebound hammer in strength domain. There is an increase in compressive strength of geopolymer concrete with replacement of M- Sand for Fine aggregate.
lightweight geopolymer coconut shell concrete (GPCSC). e CS used were collected from a site near Erode, Tamil Nadu, India. Collected CS were crushed using crusher equipment. After crushing, the CS were sieved and passed through 12.5mm sieves and used as coarse aggregates. e aggregates used in concrete can be wet, dry with a saturated
Geopolymer concrete can be successfully used to bond carbon fabrics to reinforced concrete beams. Bhikshma et al. (2010), investigated the flexural behavior of high strength manufactured sand concrete. The researchers observed that Workability of the M50 grade manufactured sand concrete observed to be 30% less
used as alkaline activators. Locally available river sand is used as ne aggregate and locally available 20 and 12.5 mm sizes crushed basalt stones are used as coarse aggregates. II-B PARAMETERS CONSIDERED FOR MIX PROPORTIONING OF GEOPOLYMER CONCRETE. For the development of y ash based geopolymer concrete
Although geopolymer concrete can be made using various source materials, the present study used class F fly ash and GGBS. Also, as in the case of OPC, the aggregates occupied 75-80 % of the total mass of concrete. ... the sand as per IS 2386 (Part III, 1963) 8 were 2.62 and 1% respectively. ... Crushed granite stones of size 20 mm and 10 mm ...
1.1 GEOPOLYMER CONCRETE Geopolymer concrete does not use Portland cement it uses a highly abundant material called fly ash. Fly ash is a waste by product of thermal power plant with high fineness ( OPC) which produces an impermeable geopolymer concrete. Geopolymer concrete is also much more durable that ordinary concrete due to its resistance ...