Sulfuric Acid Resistant Concrete A200 Geopolymer Solutions

Sulfuric Acid Resistant Concrete A200 Geopolymer Solutions


US6749679B2 - Composition of materials for production of

A cement composition for use in acidic environment containing liquid alkali silicate, vitreous silicate setting agent, lime containing material and inert filler and building materials made therefrom as well as the method of making such building materials. The liquid alkali silicate may include sodium silicate or potassium silicate. The vitreous silicate setting agent may include soda-lime

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PDF Biogenic Sulfuric Acid Attack and Case Studies

sulfuric acid reacts with the cementitious paste of concrete (as well as steel and carbonate aggregate, if present) and causes deterioration. Research has been devoted to designing and developing new durable concrete with good resistance to BSA.4 Calcium aluminate cement, calcium sulfoaluminate cement, and geopolymer are reported to exhibit

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PDF Performance of Geopolymer Concrete in Aggressive Environment

geopolymer concrete with a combination of sodium hydroxide and sodium silicate, offers a promising alternative OPC. Therefore, this research aims to identify the performance of geopolymer concrete in aggressive environment. The specimens were exposed to 5% of sulphuric acid, sodium chloride and distilled water.

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Effect of nano-silica on the chemical durability and

Abstract In this study, the effect of nano silica on the short term severe durability performance of fly ash based geopolymer concrete (GPC) specimens was investigated. Four types of GPC were produced with two types of low calcium fly ashes (FAI and FAII) with and without nano silica, and ordinary Portland cement concrete (OPC) concrete was also cast for reference.

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Protecting concrete from chemical attack - Hychem

TL9 is a flexible, high-impact epoxy coating with excellent resistance to a wide range of chemicals from concentrated sulphuric acid (98 per cent solution) to hydrocarbons, caustic solutions and aqueous salts. "Recently, we have enhanced the TL9 formula to improve its chemical resistance and overall performance.

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Corrosion resistance of fly ash-based geopolymer in

Corrosion testing of geopolymer specimens: the corrosion tests were conducted following the parameters described in 14, by the immersion of geopolymer specimens in HCl and H 2 SO 4 acid solutions of concentrations of 3%, 6%, and 9% for 1, 3, 7, 14, and 28 days.

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SRM University - SRMIST

Rajamane N. P., Nataraja M. C, Lakshmanan, Dattatreya J. K and Sabitha, [ ], "Sulphuric acid resistance of geopolymer concretes", Proceed of the Asian Conference on Concrete ACECON , Organised by the Indian Concrete Institute and the Indian Institute of Technology Madras, 5-9 December, pp 789-794

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Effect of Na2O Content on Durability of Geopolymer Mortars

This paper presents the findings of an experimental investigation to study the effect of alkali content in geopolymer mortar specimens exposed to sulphuric acid. Geopolymer mortar specimens were manufactured from Class F fly ash by activation with a mixture of sodium hydroxide and sodium silicate solution containing 5% to 8% Na2O. Durability of specimens were assessed by immersing them in 10%

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PDF Geopolymer Concrete: the Green Alternative With Suitable

GEOPOLYMER CONCRETE: THE GREEN ALTERNATIVE WITH SUITABLE acid resistance, GPC shows good performance compared with OPC. An experimental investigation for the performance of GPC immersed in sulphuric acid and magnesium sulphate, conducted by Sanni and Khadiranaikar ( ) showed that the mass loss of GPC specimens was about 3 % for 45 days

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KR101694807B1 - Mortar with chloride resistance and acid

The present invention relates to a mortar composition for repairing and reinforcing a concrete structure using a geopolymer containing 36.0 to 39.0 wt% of blast furnace slag, 4.0 to 5.0 wt% of fly ash, 40.0 to 45.0 wt% of coarse silica, 4.0 to 6.5 wt% of gypsum, 2.5 to 3.5 wt% of amorphous calcium aluminate, 1.5 to 2.5 wt% of sodium silicate, 1.5 to 2.0 wt% of redispersible resin, and 1.5 to 3

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Effect of geopolymer cement on microstructure, compressive

Replacement of 50% OPC by geopolymer cement increased the 28-day compressive strength by about 50% and reduced the mass loss of concrete specimens subjected to eight weeks of immersion in sulphuric acid solutions with pH of 0·3 and 0·6 by 42% and 30%, respectively.

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PDF Evaluation of Sulfuric Acid-Induced Degradation of

the sulfuric acid, Portlandit and Calcium silicate hydrate of the hardened binder within the concrete get dissolved and new reaction products like ettringite are built [22], which can further increase the process of deterioration by crack formations and a higher exposed surface of the concrete [25]. The high acid resistance of geopolymers is

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Durability of Blended PFA and POFA Geopolymer Concrete

Consequently, the optimum mix design of the blended ash geopolymer (BAG) concrete and OPC concrete specimens were prepared with water to cement ratio of 0.5 by mass as control. The micro structural analysis by X-ray diffraction (XRD) was done. BAG concrete showed better performance in 2% sulfuric acid and 5% sulfate solutions.

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PDF Performance of Geopolymer Concrete Under

The resistance of fly ash-based geopolymer concrete to sulfate and acid attack has been studied by soaking test specimens in 5% sodium sulfate solution, and in 2%, 1%, and 0.5% concentrations of sulfuric acid solution.

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PDF Performance of Geopolymer Concrete with Polypropylene Fibres

Performance of Geopolymer Concrete with Polypropylene Fibres Durability tests were conducted for sulphate and sulphuric acid resistance and the cylinders were durable to chemical environment. The work has been extended to the structural members like slab, beam, column and its solution, the mass of water in the sodium hydroxide solution

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Mohd Azreen Mohd Ariffin‬ - ‪Google Scholar

2014. Mix design and compressive strength of geopolymer concrete containing blended ash from agro-industrial wastes. MA Mohd Ariffin, MW Hussin, MA Rafique Bhutta. Advanced Materials Research 339, 452-457. , 2011. 42. 2011. Self-compacting geopolymer concrete with spend garnet as sand replacement.

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Dynastone is Acid Resistant Concrete

Dynastone has developed and uses an accelerated acid test that is much harsher than concrete is exposed to in actual service. Our accelerated test involves immersing the sample in pH 1 sulfuric acid for 48 hours and then removing the sample and brushing it under running water to remove any passivating gypsum layer.

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PDF Study on Geopolymer Concrete

Sathia et al., proved that when geopolymer is exposed to acid solution, only 0.5% of weight is lost when compared to normal concrete immersed in 3% sulphuric acid [7]. C. Workability of fresh geopolymer concrete Sathia et al's study said that water also plays an important role in geopolymer concrete as much as normal concrete.

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Investigation of fly ash and rice husk ash-based

Geopolymer concrete is generally composed of alumina-silicate materials combined with alkaline solution. Geopolymer concrete plays a vital role to safeguard the environment by way of eliminating cement in concrete. The agricultural and industrial disposals include rice husk ash and flyash can be used as binding material and it is activated using alkaline solution. Concrete structures usually

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PDF Sulfate and acid resistance of lithomarge based geopolymer

The resistance of room temperature cured geopolymer mortars (GPM) against chemical attacks, i.e. sodium and magnesium sulfate solutions, and sulfuric and hydrochloric acid solutions, was evaluated. GPMs were formulated using a lithomarge precursor (low-purity kaolin) to achieve 28-day characteristic compressive strengths of 37.5 and 60 MPa. Their

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Properties of high-calcium and low-calcium fly ash

3.2.3. Sulfuric acid resistance . Fig. 12 shows the influence of the RA on the acid resistance of the geopolymer materials. Serious surface deterioration was found in the geopolymer mortars containing RA, as shown in Fig. 13. This is in agreement with the study by Nuaklong et al. ( ) on geopolymer concrete made with

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