Based on the favourable 28-day compressive strength (73–84 MPa) and durability performance documented across the numerous past year studies that were reviewed, it can be …

Without metakaolin, concrete strength declined; however, their synergistic use significantly enhanced mechanical properties, elevating compressive strength by up to 16% and tensile strength by up to 9%. Furthermore, this combination reduced concrete weight and hydration temperature during concreting by 10% and 19%, respectively. The study also ...

The inclusion of metakaolin in the pervious concrete matrices was observed to increase the number of blows required for initiating service and ultimate cracks irrespective of the size of aggregates. In case of 12.5PCMK15 mix, the number of blows required to induce service and ultimate cracking was higher than 12.5CPC mix by 46 and 80 blows ...

Metakaolin is reactive and is widely used in the modern concrete industry. This study presents an integrated strength–sustainability evaluation framework, which we employed in the context of metakaolin content in concrete. First, a composite hydration model was employed to calculate reactivity of metakaolin and cement. Furthermore, a hydration-based linear …

Kaolin Clay. Metakaolin consist of silica and alumina in an active form and as other mineral admixtures, it reacts with the calcium hydroxide at room temperature and form calcium silicate hydrate (C-S-H)-gel which increases the density of concrete and reduces porosity.Thus, it decreases permeability and increase durability of the concrete.

Qian X, Li Z (2001) The relationships between stress and strain for high-performance concrete with metakaolin. Cement and Concrete Research 31: 1607–1611. Article Google Scholar Ramlochan T, Thomas M, Gruber KA (2000) The effect of metakaolin on alkali-silica reaction in concrete. Cement and Concrete Research 30: 339–344.

durability of concrete containing metakaolin and other inadequate mixing of the ingredients, incomplete pozzolans. Recent developments in high-resolution X-ray dispersion of powder aggregates and poor compaction. microscopy [23] should enhance our understanding of the Pastes at low water/binder ratios are particularly prone to

In this article, highly reactive metakaolin properties, influence of metakaolin on fresh and hardened concrete properties, durability, and application of concrete containing highly reactive metakaolin will be explained briefly.

Concrete with the metakaolin powder presented a strength of 609 kgf/cm2 (59.7 MPa), which corresponds to M9 (concrete containing 15% metakaolin), consistent with 116% improvement with respect to ...

In concrete mixtures, metakaolin replaced either cement or sand in percentages of 10% or 20% by weight of the control cement content. The strength development of metakaolin …

This study evaluates the potential use of discarded plasterboard paper as fibers from buildings to reinforce concrete. Various concentrations of wastepaper fibers (0.5%, 1%, 1.5%, 2%, and 2.5% by weight of the binder) were investigated in this research. To mitigate the water absorption effect of the paper fibers, metakaolin was employed as a partial cement …

Metakaolin consists of the mineral kaolinite with a particle size smaller than cement, it is a valuable admixture for concrete forming a high-performance concrete 19,20.

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 ...

Badogiannis.E et al (2004) evaluated the effect of Metakaolin on concrete. Eight mix proportions were used to produce high-performance concrete, where Metakaolin replaced either cement or sand of 10% or 20% by weight of the control cement content. The strength development of Metakaolin concrete was evaluated using the efficiency factor (k value).

Metakaolin is a partial substitute for cement in concrete having a target mean strength of 33.5 MPa (C-25) concrete production with 0%, 10%, 20%, and 30% replacement of metakaolin by weight of cement with 0.49% water-to-cement ratio.

Future of Metakaolin Concrete. Current sustainability trends suggest a bright future for graphene-infused metakaolin concrete. The green revolution will limit future access to certain popular SCMs, driving interest in metakaolin blends. Fly ash from coal-fired power plants is a prime example. Coal use declines as such plants close.

Sikacrete® M-100 is highly reactive metakaolin pozzolan for portland cement concrete, grouts and mortars applications. Sikacrete® M-100 meets the chemical requirements of ASTM C-618, Class N pozzolan.

The field of construction materials and sustainable infrastructure has witnessed a significant shift towards environmentally friendly alternatives. Geopolymers, as an emerging class of materials, have gained substantial attention due to their eco-friendly nature and mechanical properties. One of the key ingredients in geopolymer formulations is metakaolin, a thermally …

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 ...

During the past two decades, geopolymer concrete has been investigated as a sustainable alternative to Portland cement concrete, which is known to generate a huge amount of CO2 in the environment. This study focuses on the assessment of the fresh and hardened mechanical properties and durability of metakaolin (MK)-based geopolymer rubberized …

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 ...

This study investigates the effect of variable percentages of metakaolin (MK) on the mechanical and durability performance of concrete. Kaolin clay (KC) was used in the current research to prepare the MK by the calcination process; it was ground in a ball mill to its maximum achievable fineness value of 2550 m 2 /Kg.

Metakaolin for low carbon cement, mortars and concrete, lime mortars and plasters. Metakaolin is a pozzolanic, amorphous, silico-aluminate manufactured through the careful calcination of high quality kaolin. The pozzolanicity of metakaolin refers to its ability to react with calcium hydroxide and limestone, thus increasing strength and ...

When used to replace cement at a ratio of 5-10% by weight, metakaolin improves the cohesiveness of concrete and reduces the likelihood of bleeding during the finishing and …

The intent of this study is to explore the physical properties and long-term performance of concrete made with metakaolin (MK) as a binder, using microsilica (MS) and nanosilica (NS) as substitutes for a portion of the ordinary Portland cement (OPC) content. The dosage of MS was varied from 5% to 15% for OPC-MK-MS blends, and the dosage of NS was …

Metakaolin (MK) is created by the calcination of kaolin (firing process) to increase its reactivity/pozzolanicity by increasing the amorphousity nature that plays an important role in the strength performance of AABs [19], [20].The firing process leads to atomic structure rearrangement of hexagonal co-ordinated kaolinite (AlO 6) into the quaternary and pentagonal …

This research study is performed on the self-compacting geopolymer concrete (SCGC) combining coal bottom ash (CBA) and metakaolin (MK) as a substitution for GGBFS alone and combined for analysing ...

This work researched into the use of metakaolin as a partial substitute for cement in concrete, metakaolin was obtained by the calcination of kaolin clay to about 700 0C Cement was replaced with ...

Metakaolin, produced by calcining kaolinite at high temperature, is a pozzolanic material, suitable to be used in concrete mixes. This paper reviews the research published on …

Metakaolin is a pozzolanic material widely used in concrete that enables concrete to attain higher performance, increased strength, & reduced permeability.