Metakaolin is produced by heating sources of kaolin (clay, paper sludge etc.) to between 650°C and 750°C to produce a material that can be added to cement in place of clinker. ... This improves the early strengths of concrete with metakaolin, making it suitable for precast applications. As with other pozzolans, metakaolin increases the long ...
In recent times, various advanced supplementary materials have been used to improve the performance of mortar and concrete. Metakaolin (MK) is a cementitious material that is currently in demand because of its easy availability and low production cost. The current article highlights the positive effects of metakaolin on the mechanical and ...
The constituents of mixes were Portland cement (PC), metakaolin (MK), water, fine aggregate and coarse aggregate. The fine aggregate used complied with class M of BS 882:1992, and 20 mm nominal size crushed and washed was used as coarse aggregate.The superplasticiser (SP) used was naphthalene sulphonate based liquid with …
Making concrete with metakaolin is a more proficient process as it diminishes the consumption of Portland cement as well as strengthens the desired properties of the concrete. Thanks to the added strength provided by metakaolin to concrete projects, fewer additional support structures may be required to achieve the same results. ...
Metakaolin concrete w as evaluated by calculating its efficiency factor (k-value). The efficacy f actor K is . defined by dividing t he cement mass b y the metakaolin mass when the ce ment/water ...
Metakaolin is a type of pozzolanic material that can be used as a binder in geopolymer concrete. It is made by calcining metakaolin, a type of kaolin clay, at high temperatures. …
Dynapoz Metakaolin for Concrete Christy Minerals Dynapoz is a mineral admixture for producing high performance concrete. It consists of Class N Calcined Clay Natural Pozzolan (ASTM C618). It is designed to produce …
Metakaolin-based geopolymer concrete requires lesser temperature for curing in comparison to fly ash-based geopolymer concrete. A study reported that in the case of metakaolin geopolymer concrete, an optimum range of the temperature for curing is 32–48 °C such as exposure under sunlight or at room temperature (Al-Shether et al. …
The admixture metakaolin when used at optimum quantity tend to increase the strength of concrete mix when compared with conventional concrete. Metakaolin increased the compressive strength, split tensile strength and flexural strength of concrete.Akasha et al., (2008) studied the effect of metakaolin by 0%, 10%, 15% and20% replacement of Portland
Metakaolin which is commonly used as an admixture or partial replacement of cement owing to its most effective pozzolanic properties, which improve the microstructure and strengthen the mechanical ...
Three sample groups were created: an ordinary concrete mix (0% metakaolin), concrete containing 8% MK235 (by mass), and concrete containing 8% MK349 (by mass). Superplasticisers were added to the MK235 and MK349 mixes to achieve a slump of 76–102 mm, with the dosage of superplasticiser increasing as the w / …
High Reactivity Metakaolin The White Alternative to Silica Fume. Manufactured For: High Strength & High Performance Concrete; Grouts, Mortars, Blended Cement Products; Architectural Precast & Decorative Concrete; Stone / Brick Veneer & GFRC; PowerPozz™ () – an amorphous alumino-silicate, is white in color and is a proven alternative to ...
Unlike the behaviour of concrete containing CSF [9], where there is a continuous increase in relative strength with increase in CSF content up to at least 28% replacement, concrete with metakaolin shows a maximum in relative strength at 20% replacement and then a re- duction.
Metakaolin Powder. Sikacrete® M-100 is highly reactive metakaolin pozzolan for portland cement concrete, grouts and mortars applications. Sikacrete® M-100 meets the …
Acting as a new type of nano-materials, the nano-metakaolin (NMK) is developed and applied in concrete in recent years. Comparing with the other nano …
Versatile Metakaolin for multiple applications. Our metakaolin ranges, such as our Argical™ M and MetaStar™ series, provide a broad range of benefits when used in concrete, lime mortars and plasters. Metakaolin is manufactured through the calcination of high purity kaolin to form an amorphous pozzolanic white mineral additive for use in …
The raw materials required to produce metakaolin are easily accessible and cheap. Addition of metakaolin in concrete alters mechanical properties, notably compressive strength. Prior knowledge of ...
Approaches to synthesising rapid geopolymer repair materials made from tannery sludge (TS) and metakaolin (MK) were explored to investigate the treatment and utilisation of TS. The setting time and 1-day compressive strength were taken as indicators for evaluating the performance of the TS/MK geopolymer as a repair material.
10.107 – CONCRETE COMPRESSIVE STRENGTH High Reactivity Metakaolin () Engineered Mineral Admixture for Use with Portland Cement. dvanced Cement Technologies' PowerPozz™ High Reactivity Metakaolin is a manufactured pozzolanic mineral admixture which significantly enhances many performance characteristics of …
Metakaolin-based geopolymer concrete requires lesser temperature for curing in comparison to fly ash-based geopolymer concrete. A study reported that in the …
The introduction of the wastepaper fiber to the metakaolin concrete by up to an optimum content of 1.5% results in an increase in the compressive strength (57%), flexural load bearing capacity and modulus of rupture (31%), CMOD displacement at the load bearing capacity (14%), fracture toughness (37%), and fracture energy (73%) of the concrete. ...
This paper investigates the resistance of red mud-coal metakaolin geopolymer concrete (RCGC) to chloride ion penetration under natural immersion conditions. A chloride ion natural diffusion test is performed to determine the concrete's total and free chloride ion contents. Meanwhile, the water–binder ratio and age of …
Metakaolin (MK) is a highly reactive pozzolan obtained from calcining clay with high kaolinite content at elevated temperatures (650 to 800°C). Its use at repla. Search. ... The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and …
What is Metakaolin? Metakaolin is a pozzolan, probably the most effective pozzolanic material for use in concrete. It is a product that is manufactured for use rather than a by-product and is formed when china clay, the mineral kaolin, is heated to a temperature between 600 and 800ºC.
This study proved that blended concrete specimens have a lower capillary absorption and a higher chloride penetration resistance once these were compared with OPC concrete specimens without addition.
This study presents the effect of incorporating metakaolin (MK) on the mechanical and durability properties of high strength concrete for a constant water/binder ratio of 0.3. MK mixtures with cement replacement of 5, 10 and 15 % were designed for target strength and slump of 90 MPa and 100 ± 25 mm. From the results, it was …
Metakaolin, produced by calcining kaolinite at high temperature, is a pozzolanic material, suitable to be used in concrete …
Among the various ML models appraised, GBM demonstrated exceptionally higher capability in predicting the compressive strength of metakaolin-based geopolymer concrete in different strength grades, achieving R 2 = 0.983, RMSE = 2.218 MPa, MAE = 1.615 MPa, MAPE = 6.976 %, and α 20 = 0.936 in the testing phase. In the case of RF, …
Approaches to synthesising rapid geopolymer repair materials made from tannery sludge (TS) and metakaolin (MK) were explored to investigate the treatment and utilisation of TS. The setting time and 1-day compressive strength were taken as indicators for evaluating the performance of the TS/MK geopolymer as a repair material. The …
The CO 2 emission by the cement has created major effects on environment, this resulted a need for replacement of cement in the making of concrete. This study explains the mechanical properties and microstructural analysis of concrete made by partial replacement of cement with the metakaolin (MK) and alccofine (AL) which are mineral …
The use of metakaolin (MK) as partial replacement of cement in mortar and concrete has been extensively investigated in recent years. The literature reviewed clearly demonstrates that MK is an effective pozzolan.
