scholarly journals Alternative Sustainable Binder for Concrete Construction: Wood Ash as a Cement Replacement

2021 ◽  
Author(s):  
Sevket Can BOSTANCI
Keyword(s):  
Wood Ash ◽  
Concrete Construction ◽  
Cement Replacement ◽  
Construction Wood

scholarly journals Construction Of Economical Pavement Structures With Wood Ash

2021 ◽  
Vol 1202 (1) ◽  
pp. 012048
Author(s):  
Sanja Dimter ◽  
Martina Zagvozda ◽  
Tea Tonc ◽  
Miroslav Šimun
Keyword(s):  
Mechanical Properties ◽  
Wood Ash ◽  
Hydraulic Binder ◽  
Alternative Materials ◽  
Strength Tests ◽  
Drava River ◽  
Pavement Structure ◽  
Pavement Structures ◽  
Construction Wood ◽  
Construction Practice

Abstract Stabilized mixes that are used in pavement structures are composed of aggregate bound with hydraulic binders (cement, lime) or bitumen. The most commonly used for the construction of base layers are mixes stabilized with cement. A long-standing construction practice for pavement structures was based on the use of quality granular materials for the construction of base layers. However, when designing the pavement structure and selecting materials, economy, sustainability, and environmental impact, in addition to their mechanical properties, should also be considered. Clear requirements and guidelines for sustainable development have imposed the need to explore the possibility of using non-standard materials in construction. Wood ash, which is formed as a residue from the combustion of biomass in the production of electricity and heat, is one of the newer and, in Croatia, less researched alternative materials that can be applied in construction. The paper describes compressive strength tests of mixtures of sand from the Drava River and cyclone wood ash stabilized with various contents of cement. The obtained results showed that with wood fly ash (in a content of 30 % mass.) in the stabilization mixture of sand, values of compressive strengths can be achieved within the required limits necessary for the construction of base layers of the pavement structure stabilized by a hydraulic binder.

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 Wood ash used as partly sand and/or cement replacement in mortar

2016 ◽  
Vol 11 (5) ◽  
pp. 781-791 ◽  
Author(s):  
Lisbeth M. Ottosen ◽  
Esben Østergaard Hansen ◽  
Pernille E. Jensen ◽  
Gunvor M. Kirkelund ◽  
Per Golterman
Keyword(s):  
Wood Ash ◽  
Cement Replacement

Characterisation of High Calcium Wood Ash for Use as a Constituent in Wood Ash-Silica Fume Ternary Blended Cement

2011 ◽  
Vol 346 ◽  
pp. 3-11 ◽  
Author(s):  
Cheah Chee Ban ◽  
Ramli Mahyuddin
Keyword(s):  
Silica Fume ◽  
Blended Cement ◽  
High Strength ◽  
Strength Properties ◽  
Wood Ash ◽  
Biomass Energy ◽  
Cement Replacement ◽  
Constituent Material ◽  
High Calcium ◽  
Partial Cement Replacement

The potential stabilization of high calcium wood waste ash (HCWWA) derived from the wood biomass energy production for use as cementitious material using another industrial by-product, silica fume, was investigated. Throughout the study, both HCWWA and DSF were characterized in term of their respective chemical composition and mineralogical phases. Besides, physical characteristics of HCWWA and DSF in terms of particle grading and specific surface area were established in order to evaluate their suitability as for use as constituent material in blended cement. Additionally, compressive strength properties of high strength mortar produced using HCWWA and DSF blended cement were investigated. Results indicated that the use of HCWWA as a partial cement replacement did not have significant adverse effect on the workability of fresh mortar. The enhancement of the compressive of mortar was observed for mortar mixes containing DSF and HCWWA levels of cement replacement up to 16%.

Reaction mechanisms of wood ash for use as a partial cement replacement

2021 ◽  
Vol 286 ◽  
pp. 122889
Author(s):  
Nina M. Sigvardsen ◽  
Mette R. Geiker ◽  
Lisbeth M. Ottosen
Keyword(s):  
Reaction Mechanisms ◽  
Wood Ash ◽  
Cement Replacement ◽  
Partial Cement Replacement
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