Biochar as a Partial Cement Replacement Material for Developing Sustainable Concrete: An Overview

2021 ◽  
Vol 33 (12) ◽  
pp. 03121001
Author(s):  
Kang-Hao Tan ◽  
Tian-Yu Wang ◽  
Zu-Heng Zhou ◽  
Ying-Hong Qin
Keyword(s):  
Cement Replacement ◽  
Sustainable Concrete ◽  
Partial Cement Replacement

scholarly journals Recycling of Coal Ash in Concrete as a Partial Cementitious Resource

Resources ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 99 ◽  
Author(s):  
Sajjad Ali Mangi ◽  
Mohd Haziman Wan Ibrahim ◽  
Norwati Jamaluddin ◽  
Mohd Fadzil Arshad ◽  
Sri Wiwoho Mudjanarko
Keyword(s):  
Tensile Strength ◽  
Bottom Ash ◽  
Coal Ash ◽  
Pozzolanic Reaction ◽  
Concrete Construction ◽  
Great Opportunity ◽  
Strength Performance ◽  
Cement Replacement ◽  
Sustainable Concrete ◽  
Partial Cement Replacement

Concrete construction offers a great opportunity to replace the cement with a coal-based power plant waste—known as coal bottom ash (CBA)—which offers great environmental and technical benefits. These are significant in sustainable concrete construction. This study aims to recycle CBA in concrete and evaluate its particle fineness influence on workability, compressive and tensile strength of concrete. In this study, a total of 120 specimens were prepared, in which ground CBA with a different fineness was used as a partial cement replacement of 0% to 30% the weight of cement. It was noticed that workability was decreased due to an increased amount of ground CBA, because it absorbed more water in the concrete mix. The growth in the compressive and tensile strength of concrete with ground CBA was not significant at the early ages. At 28 days, a targeted compressive strength of 35 MPa was achieved with the 10% ground CBA. However, it required a longer time to achieve a 44.5 MPa strength of control mix. This shows that the pozzolanic reaction was not initiated up to 28 days. It was experimentally explored that 10% ground CBA—having particle fineness around 65% to 75% and passed through 63 µm sieve—could achieve the adequate compressive and tensile strength of concrete. This study confirmed that the particle fineness of cement replacement materials has a significant influence on strength performance of concrete.

scholarly journals Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

2019 ◽  
Vol 5 (1) ◽  
pp. 74 ◽  
Author(s):  
Ashfaque Ahmed Jhatial ◽  
Wan Inn Goh ◽  
Kim Hung Mo ◽  
Samiullah Sohu ◽  
Imtiaz Ali Bhatti
Keyword(s):  
Calcium Oxide ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Pozzolanic Reaction ◽  
Waste Materials ◽  
Co2 Gas ◽  
Cement Replacement ◽  
Sustainable Concrete ◽  
Partial Cement Replacement ◽  
Carbon Dioxide Co2

Concrete which is widely used material in the construction industry, has a carbon footprint. Approximately 10% of global Carbon Dioxide (CO2) gas is emitted during the production of cement which is vital ingredient of concrete. The increase in production of cement affects global warming and climate change. Therefore, many have attempts have been made to develop green and sustainable concrete by utilizing different waste materials. With the utilization of waste materials as cement replacement, the CO2 gas emissions can be reduced as well as resolve the environmental issues that the inhabitants face during the disposal of such waste materials. This paper reviews the potential and innovative utilization of Rice Husk Ash (RHA) and Eggshells as partial cement replacement to develop green concrete. RHA which is rich in silica and eggshells contain identical amount of calcium oxide as cement, when finely grinded and used together as partial cement replacement, can trigger a pozzolanic reaction, in which silica reacts with calcium oxide resulting in the formation of calcium silicates which are responsible for achieving higher strengths.

Review paper: Performance of rice husk ash as a material for partial cement replacement in concrete

2021 ◽  
Author(s):  
Zaidatul Syahida Adnan ◽  
Nur Farhayu Ariffin ◽  
Sharifah Maszura Syed Mohsin ◽  
Nor Hasanah Abdul Shukor Lim
Keyword(s):  
Rice Husk ◽  
Review Paper ◽  
Rice Husk Ash ◽  
Cement Replacement ◽  
Partial Cement Replacement

scholarly journals Microstructural characterization of catalysis product of nanocement based materials: A review

2018 ◽  
Vol 34 ◽  
pp. 01039
Author(s):  
Norsuzailina Mohamed Sutan ◽  
Nur Izaitul Akma Ideris ◽  
Siti Noor Linda Taib ◽  
Delsye Teo Ching Lee ◽  
Alsidqi Hassan ◽  
...  
Keyword(s):  
Carbon Dioxide Emission ◽  
Essential Element ◽  
Microstructural Characterization ◽  
High Energy ◽  
Green Technology ◽  
Microstructural Development ◽  
Cement Replacement ◽  
Alternative Materials ◽  
Partial Cement Replacement

Cement as an essential element for cement-based products contributed to negative environmental issues due to its high energy consumption and carbon dioxide emission during its production. These issues create the need to find alternative materials as partial cement replacement where studies on the potential of utilizing silica based materials as partial cement replacement come into picture. This review highlights the effectiveness of microstructural characterization techniques that have been used in the studies that focus on characterization of calcium hydroxide (CH) and calcium silicate hydrate (C-S-H) formation during hydration process of cement-based product incorporating nano reactive silica based materials as partial cement replacement. Understanding the effect of these materials as cement replacement in cement based product focusing on the microstructural development will lead to a higher confidence in the use of industrial waste as a new non-conventional material in construction industry that can catalyse rapid and innovative advances in green technology.

scholarly journals Thermal Properties of High-Performance Concrete Containing Fine-Ground Ceramics as a Partial Cement Replacement

2015 ◽  
Vol 21 (3) ◽  
Author(s):  
Lenka Scheinherrová ◽  
Anton Trník ◽  
Tereza Kulovaná ◽  
Pavel Reiterman ◽  
Igor Medveď ◽  
...  
Keyword(s):  
Thermal Properties ◽  
High Performance ◽  
High Performance Concrete ◽  
Cement Replacement ◽  
Partial Cement Replacement

scholarly journals INFLUENCE OF METAKAOLIN ON PROPERTIES OF CONCRETE MODIFIED WITH POLYCARBOXYLATE ADMIXTURE FOR RIGID PAVEMENT REPAIR

2021 ◽  
pp. 90-97
Author(s):  
V.O. Kryzhanovskiy ◽  
◽  
S.O. Kroviakov ◽  
M.V. Zavoloka ◽  
◽  
...  
Keyword(s):  
Abrasion Resistance ◽  
Frost Resistance ◽  
Mineral Admixture ◽  
Rigid Pavement ◽  
Cement Replacement ◽  
Rigid Pavements ◽  
Concrete Mixtures ◽  
Total Shrinkage ◽  
Partial Cement Replacement ◽  
Positive Effect

Abstract. The effect of partial cement replacement with high-activity metakaolin on the strength, frost resistance, shrinkage and abrasion resistance of concrete modified with polycarboxylate admixture MasterGlenium SKY 608. Portland cement CEM II/A-S 42.5 (ПЦ II/А-Ш-500) with partial metakaolin replacement 15 kg (3.75 %) and 30 kg (7.5 %) was used for concrete preparation. The amount of superplasticizer in all studied compositions was 1.2% of cement weight. Slump of concrete mixtures was 6…7 cm. It was found that with increasing amount of metakaolin W/C ratio of mixtures increased slightly. The early compressive and flexural strength (at the age of 2 days) of the composition without metakaolin was higher than similar indicators with partial cement replacement with the active mineral admixture. It is worth noting the positive effect of increasing the metakaolin amount on early strength, because the composition with 30 kg metakaolin had strengths higher at 2 days of in difference to the composition with 15 kg metakaolin. It is necessary to note high frost resistance of all obtained concretes. Its grade of frost resistance reached F200 (evaluated according to the method for road concrete), which is equivalent to the grade F600 for structural concrete. Abrasion resistance was in the low range (0.30-0.31 g/cm2), total shrinkage does not exceed 0.28 mm/m, which in combination with high frost resistance has a positive effect on the durability of concrete mixtures for rigid pavements repair.

scholarly journals Effect of limestone powder on self-compacting concrete

2021 ◽  
Vol 9 (2) ◽  
pp. 71-78
Author(s):  
O. M. A. Daoud ◽  
O. S. Mahgoub
Keyword(s):  
Construction Material ◽  
Control Sample ◽  
Drying Shrinkage ◽  
Heat Of Hydration ◽  
Limestone Powder ◽  
Partial Replacement ◽  
Self Compacting Concrete ◽  
Technical Problems ◽  
Cement Replacement ◽  
Partial Cement Replacement

Self-compacting concrete (SCC) is an innovative construction material in the construction industry. It is a highly fluid and stable concrete that flows under its own weight and fills completely the formwork. The SCC requires high powder content (mainly of cement) up to 600kg/ to achieve its properties. This will be problematic because increasing the cement content is not feasible, and may cause high cost and some other technical problems such as higher heat of hydration and higher drying shrinkage. This paper investigates the effect of limestone powder (LSP) on fresh and hardened properties of SCC due to the use of LSP as a partial cement replacement. For comparison, a control sample of concrete was prepared without LSP to compare it with the various samples containing different percentages of LSP as a partial replacement of cement. Four mixes with a constant amount of (superplasticizer, sand, coarse aggregate, and water) at various replacement levels of 0%, 10%, 20% and 30% from the cement weight were prepared. The experimental results show that the LSP can be effectively used as a partial cement replacement on SCC to reduced cost and enhanced the performance of SCC in fresh and hardened stages.  

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