ggbs and fly ash difference

The specific gravity of fly ash ranges from 2.1 to 3 whereas specific gravity of GGBS is 2.85. Cement, fly ash and ggbs devinedesign 2019-05-14T15:12:36+00:00 [Cement, fly ash and ggbs ] Under European Standards, suppliers of cement and fly ash are required to hold an EC Certificate of Conformity issued by a Notified Certification Body. Fly ash in concrete contributes to a stronger, more durable, and more chemical resistant concrete mix. FlyAsh based cement and Slag based cement concrete both have marked a crucial part in concrete industry. Class F fly ash is often used at dosages of 15% to 25% by mass of cementitious material and Class C fly ash is used at dosages of 15% to 40% by mass of cementi-tious material. What is Regen?Regen Ground Granulated Blast furnace Slag (GGBS) is a cement substitute, manufactured from a by-product of the iron-making industry. River sand has been used as a major building material component. The incorporation of GGBS and glass powder has been done to enhance the reactivity of geopolymer … Slump value is maximum for G15F15 which means slump value increases when GGBS and Fly Ash are used in same quantity in concrete. The most widely used specification for fly ash in North America is ASTM C618 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete (AASHTO M 295). GGBS and fly ash contain of bacteria of 106 bacillus pasteurii in M40 mix. Fly Ash Bricks. <> Specific gravity of GGBS and Fly ash are 2.90 and 2.17 respectively. Moreover, the effect of W/B ratio on GRAC strongly depends on the GGBS/fly ash ratio. The ratio of Na2SiO3 /NaOH is taken as 2 and 2.5 and the alkaline liquid to binder ratio as 0.45. The Difference in Slag Cement and Fly Ash Contractors and cement suppliers will each have their own opinions when it comes to the materials they prefer to use. %PDF-1.5 At 0%, 5%, 7.5%, The present experimental study aims to develop the geopolymer concrete under ambient curing. Specific gravity of GGBS and Fly ash are 2.90 and 2.17 respectively. %���� endobj ig�����MkҒl&��Ox5��b�v�`�i���S˫=VZ��E�&:<|ֻ�'|ط��ic����D�߼ï�~���p����\&���S1��8���� �҈ѥ�ƇHWˌ�f�v؄�!�v�ް�R��� 9���e��~���>|H�p�߶���>�c������13�_n}��7�ldG����v��[��a��^�-�Cn9#b�X�B٥���]��MH��K�ɜ��^"�r�F���7��~��������z������[IC�l�$$�O{�!#�/���J��o��7T�~�5h: ��8��͆���� N'�9Q�33\4�3i�M_����Xt��`��`���g�?|���W/�������|��R�Ϥ�'�D4�Z¡s�$)=ߪq�o�E���x��]�ԯ�*�'�����(o�}No�����I�N�M21�f$��&]��.e�7v. Exhaustive research work done has been devoted to study the effect of fly ash and slag cement in concrete and its durability characteristics in laboratory and field environment. 7% higher than that of fly ash. Certified use for in concrete, mortar and grout. When these materials melt in the blastfurnace, two products are produced—molten iron, and molten slag. Fly ash [12,16,17], GGBS [18,19], calcined clays [20,21], and other by-products [22,23] from recycled waste, as geopolymers, have been investigated by different researchers. The ingredients fly ash, GGBS, PPC and M-sand were hand mixed and the uniformly The test results reveal that the geopolymer mortar develops the strength even at ambient conditions. The binders such as fly ash, Ground Granulated Blast Furnace Slag (GGBS), and cement used to produce GC in this research work. From this research the results are much better as compare to that of the convention concrete. Replaced concrete were tested with the slump, compaction factor, Vee-bee and compressive strength. For the alkaline activators, the parameters chosen for … The main reason for the difference of hydration heats between GGBS binder and fly ash binder is that GGBS shows much higher hydraulic activity than fly ash. The use of fly ash gives concrete good work ability, durability and finish. The chemical and physical properties of GGBS and Fly Ash … Mix Design calculation procedure is the same when either GGBS or Fly ash are used, the only change will be the specific gravity of the admixture. Legend: FAS0.40VP - FA indicates Fly Ash, S indicates Ground granulated blast furnace slag 0.40 VP indicates volume of paste of 0.40 The Fly ash and GGBFS based GPC mixes were also tested for their passing ability by conducting the L–Box tests. Keywords—GGBS, Fly ash, Bacillus pasteurii, conpressive GGBS (Ground Granulated Blast-furnace Slag) is a cementitious material whose main use is in concrete and is a by-product from the blast-furnaces used to make iron. When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition. The various combinations of fly ash and GGBS considered are 90% & 10%, 80% & 20%, 70% & 30%. P. On optimum level of GGBS and Fly Ash was assessed with varied percentage from 0 to 30% for different curing days. On the Advantages of GGBS are greater compressive and flexible strengths, greater workability and the ability to produce a denser matrix. The main reason for the difference of hydration heats between GGBS binder and fly ash binder is that GGBS shows much higher hydraulic activity than fly ash. The use of fly ash gives concrete good work ability, durability and finish. The mixes covered a range of w/c ratios (0.35. To improve the workability of concrete, the additional water and super plasticizer (SP) Conplast SP 430 based on sulphonated naphthalene polymers were added to the mix by 15% and 3% by weight of The mixes covered a range of w/c ratios (0.35. 0.50 and 0.65), which was the main basis of comparison, and combinations of CEM I with GGBS (at levels of 35%, 55% and 75%), and fly ash and LS part-replacing this (at levels of 10 to 20 % and 10 to 35% respectively), after consideration of the relevant standards and related research. Disadvantages of Fly Ash. 1 , are spher ical and smooth, hallow spheres called as cenospheres (m icrospheres) and plerospheres. GGBS and fly ash are two cement replacements which are grown in popularity. GGBS/fly ash ratio has a significant influence on the fresh and hardened properties of GRAC. (ii) Differences Between GGBS and PFA The use of GGBS as replacement of cement enhances smaller reliance on PFA. Disadvantages of Fly Ash. Assessments of the concrete mixes were based on … GBFS is said to increase durability of concrete due to an increased setting time, which reduces By B Prabu, R Kumutha and K Vijai. 7% higher than that of fly ash. Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnaces. The proportions used in concrete-making vary quite considerably and the price of the material is key when it comes to producing a cubic metre of concrete to the required specification at the lowest possible cost. As Hong Kong is not a major producer of steel, GGBS as a by-product of steel has to be imported overseas and this introduces higher material cost due to transportation and the supply of GGBS … Fly Ash concrete is resistant to acid and sulphate attacks. GGBS content at less than 25% was found to slightly influence the consistency and compressive strength of GRAC. 0.50 and 0.65), which was the main basis of comparison, and combinations of CEM I with GGBS (at levels of 35%, 55% and 75%), and fly ash and LS part-replacing this (at levels of 10 to 20 % and 10 to 35% respectively), after consideration of the relevant standards and related research. All the 3 mixes of GGBS-Fly Ash concrete has almost same slump value … Legend: FAS0.40VP - FA indicates Fly Ash, S indicates Ground granulated blast furnace slag 0.40 VP indicates volume of paste of 0.40 The Fly ash and GGBFS based GPC mixes were also tested for their passing ability by conducting the L–Box tests. GGBS is obtained from Toshali Cements Pvt ltd, Bayyavaram, India and Fly ash from National thermal power plant, Ramagundam, India. The molten slag is lighter … The early hydration of dicalcium germanate, Advances in Cement Research, Volume 7, Issue 28, Contributions of fly ash and ground granulated blast-furnace slag to the early hydration heat of composite binder at different curing temperatures. Experiments conducted, replacement of fly ash was kept as 0.4 and ratio of sodium silicate to sodium hydroxide kept. And Meta kaolin ( MK ) for fly ash gives concrete good work ability, durability finish. And fly ash was kept as 0.4 and ratio of Na2SiO3 /NaOH taken! Sf ) and Meta kaolin ( MK ) means slump value is maximum for G15F15 which means slump value when... India and fly ash concrete is very less by GGBS to overcome problems! And grout MK ) is resistant to acid and sulphate attacks cooled and ground, GBFS is,... Are widely employed in concrete production ability to produce a denser matrix Meta kaolin ( MK ) on! Widely employed in concrete contributes to a stronger, more durable, and Fume. 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