Potential of Wood Waste Ash as an Additive in Concrete

Udoeyo, Felix F.; Inyang, Hilary I.; Young, D. K.; Oparadu, Edmund E

doi:10.1061/(asce)0899-1561(2006)18:4(605)

Cited by 154 publications

(90 citation statements)

References 8 publications

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“…Udeyou et al [7] observed the physical properties of wood ash as of varying shapes. The average loss on ignition was found out to be equal to 10.46.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…Udoey et al [7,10] According to this study the t-test carried showed certain results using wood ash as replacement of cement in the level of 5%, 10% and 25%, there was increase in water absorption for 28 days which was observed as significant. But the water absorption values uptill 10% were observed significant which produced positive results both with a without wood ash.…”

Section: Water Absorptionmentioning

confidence: 99%

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Partial Replacement of Wood Ash with Ordinary Portland Cement and Foundry Sand as Fine Aggregate

Batt¹,

Garg²

2017

J Civil Environ Eng

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Wood ash is generated as residual/waste from combustion done in boilers at pulp and paper mills, steam power plants, and other thermal power generating facilities. Since wood is a renewable resource for energy and an environmentally friendly material, there is an increased requirement of using waste wood for the purpose of energy production thus leading to formation of more wood ash waste. The study focuses on incorporation of wood ash in combination with ordinary Portland cement while using it for various structural works. A critical review study in sieve analysis, consistency, and water absorption, setting time and slump tests of wood ash added to OPC will produce significant results to emphasize the detailed study process. Uncontrolled burning of saw dust to form wood ash is used as a partial replacement of cement, thereby changing its physical and chemical properties. These properties are found somewhat similar to fly ash. The concrete mixes are replaced with the amorphous wood ash as an admixture of cement having grain size less than 75 microns in proportions of 5%, 10%, 15%, 20%, 25% and 30% by weight of cement. In this Study, a research work is conducted for determining the change in workability or consistency of concrete mix, compressive strength, split tensile strength, flexural strength, etc., along with review of some durability properties. Foundry Sand is used as fine aggregate to obtain efficient results.

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“…Udeyou et al [7] observed the physical properties of wood ash as of varying shapes. The average loss on ignition was found out to be equal to 10.46.…”

Section: Compressive Strengthmentioning

confidence: 99%

Section: Water Absorptionmentioning

confidence: 99%

Partial Replacement of Wood Ash with Ordinary Portland Cement and Foundry Sand as Fine Aggregate

Batt¹,

Garg²

2017

J Civil Environ Eng

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“…For metals that were soluble in the extreme and strongly acidic conditions, the mineralogical phase of the metal oxides present in the ash apparently affected their susceptibility to attack by the H þ -ions present in the extractant. At a lower pH, there is an increase in the intensity of attack by the H þ -ions on the wood ash mineral phases containing these elements, thus increasing their extractability (Udoeyo et al, 2006).…”

Section: Extractability Of Metals In the Ash As A Function Of Phmentioning

confidence: 99%

Release of metals from grate-fired boiler cyclone ash at different pH values

Pöykiö

Rönkkömäki

Nurmesniemi

et al. 2009

Chemical Speciation & Bioavailability

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The concentrations of metals (Ba, Cr, Zn, Cd, Ni, Cu, As, Hg, Pb, Mo, Se and Sb) extractable from cyclone ash, obtained from a municipal district heating plant (6 MW) incinerating forestry and sawmill residues, was studied as a function of pH (1.1 -12.8) at a liquid-to-solid (LyS) ratio of 10 Lykg. The following main fractions were obtained: (1) metals (Ba, Cr, Zn, Cd, Ni, Cu, As, Hg, Pb and Sb) that were primarily extractable in extreme or strongly acidic conditions; (2) metals (Cr and Zn) that expressed amphoteric behaviour, i.e. they were extractable both in acidic (low pH) and alkaline (high pH) conditions, but were relatively insoluble at neutral pH values; and (3) metals (Mo and Se) which were primarily extractable only in alkaline conditions. The maximum extraction recovery (R) value (%) of the metals, which varied between 1.3 and 93.4%, indicates that most of the metals in cyclone ash are not easily soluble in the conditions normally found in nature.

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“…For example, Ban and Ramli [6] studied the utilization of wood ash to partially replace cement in structural concrete and concluded that the wood ash increased the water demand and reduced the mechanical strength of concrete; while there were insignificant effects on the durability and a noticeable reduction in the dry shrinkage. Similarly, Udoeyo et al [7] investigated the addition of wood waste ash to the concrete up to 30% by the weight of cement and a remarkable reduction (by 9% to 38%) in the mechanical strength was noted especially for mixtures that incorporated high levels of wood ash. Also, Rajamma et al [8] performed research on the use of two wood ashes in cement-based materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of Wood Ash on Properties of Concrete and Flowable Fill

Yang¹,

Huddleston²,

Brown³

2016

MSCE

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This research investigated the use of wood ash to partially replace cement or sand in conventional concrete, roller compacted concrete (RCC), and flowable fill. The main focus was to determine how the wood ash addition affected the main fresh and hardened properties of these materials. It was found that the wood ash could be successfully incorporated into the conventional concrete. In particular, the wood ash addition not only accelerated the setting, but also improved the early and the 28-day compressive strength of concrete that contained the blast furnace slag. It was also observed that the wood ash could be positively added into RCC to facilitate the compaction and reduce the risk of segregation. In addition, the wood ash can be beneficially introduced into the flowable fill mixtures to facilitate flow, to alleviate bleeding and subsidence, as well as to achieve controlled strength especially when combined with the class C or the class F fly ash.

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Potential of Wood Waste Ash as an Additive in Concrete

Cited by 154 publications

References 8 publications

Partial Replacement of Wood Ash with Ordinary Portland Cement and Foundry Sand as Fine Aggregate

Partial Replacement of Wood Ash with Ordinary Portland Cement and Foundry Sand as Fine Aggregate

Release of metals from grate-fired boiler cyclone ash at different pH values

Effects of Wood Ash on Properties of Concrete and Flowable Fill

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