Invention of sustainable geopolymer concrete made with low calcium waste wood ash

Abstract

Purpose Inefficient waste disposal technique and cement production methodology caused significant environmental impacts, leading to global warming. The purpose of the research was to invent an effective, sustainable technology to use the wastes and alternate for cement in concrete. Geopolymer technology could be the most desirable solution to use the wastes into an effective product. Design/methodology/approach The wood waste ash derived from nearby tea shops was used as an alternate binder for fly ash. The replacement of WWA with FA was varied from 0 to 100% at 10% intervals. In this research, setting and mechanical features of Geopolymer Concrete (GPC) along with Waste wood ash (WWA) was carried out. The influence of wood waste ash in the microstructure of the GPC was also assessed using scanning electron microscope and X-ray diffraction analysis. Findings The findings revealed that 30% replacement of wood waste ash was performed higher in all measured features. Besides, the formation of different phases was also observed with the inclusion of wood waste ash. Research limitations/implications The demand for fly ash was increased in recent years, and the fly-based GPC has required more alkaline solution and temperature curing. Hence, there was a research gap on finding an alternative binder for fly ash. Originality/value The research novelty was to use the wood waste ash, which has inbuilt alkaline compounds on the production of sustainable geopolymer. The finding showed that the wood waste ash could be alternate fly ash that eliminates the environmental impacts and economic thrust.

Mechanical and durability characterization of hybrid fibre reinforced green geopolymer concrete

“…The findings showed that incorporating rubber fibre up to 1 % achieved the maximum increment rate compared to other mixes. Hence, the rubber fibre improved the tensile and flexural strength of GPC [37,42].…”

“…Hence, disposal of that waste rubber tire was a challenging task for the cleaner environment. Awareness on utilizing waste rubber tires in concrete composites was increased, and it was used as a filler material and coarse aggregate [37]. Crumped rubber was replaced by 15percent with fine aggregate, which enhanced better performance; however, it reduces the compressive strength [36].…”

Improving the Mechanical Properties of High-Performance Concrete using Alccofine and Glass Powder

“…In the current study, an examination was conducted to create high-performance concrete (HPC) by substituting various percentages of alccofine (5,10,15,20,25, and 30%) for cement and glass powder (10, 20, 30, 40 and 50%) for fine aggregate. The results of the fresh and mechanical index tests conducted on all concrete mixtures are highlighted in the current study.…”

“…As a result, utilising SCM as a partial or alternative to cement can lower the amount of cement used in the production of concrete and lower environmental pollution [6][7][8][9]. SCM comes in a variety of forms, including Ultra-fine Palm Oil Fuel Ash (UPOFA) [10], Waste Bottom Ash (WBA) [11], Calcined Clay [12], Rice Husk Ash (RHA) [13], Metakaolin [14], Fly Ash (FA) [15], Limestone Powder (LP) [16], Ground Granulated Blast furnace Slag (GGBS) [17], Glass Powder (GP) [18,19], Bio-Medical Waste Ash (BWA) [20][21][22][23][24], Waste Wood Ash (WWA) [25][26][27] and E-Waste [28,29]. The waste materials released from factories and industry is processed to produce the SCM.…”

Investigation on the effect of ultra fine rice husk ash over slag based geopolymer concrete

“…Plenty of research works focus on the utilization of flyash for the development of geopolymer concrete [6][7][8], bio medical waste ash [9,10], wood ash [11][12][13][14][15], GGBS [16][17][18]. Low calcium fly ash is widely preferred owing to its abundance availability and cheap cost.…”