The behavior of eco-friendly self – compacting concrete partially utilized ultra-fine eggshell powder waste

Abstract

From food wastes, there are many materials that can be used as building materials like eggshells. This paper examined the effect of ultra-fine eggshell powder (UFESP) as a partial cement replacement by (0–25% with 5% increments) in weight on fresh and compressive strength of sustainable Self-Compacting Concrete (SCC) with a constant water to binder ratio and binder content of 0.38 and 450 kg/m3, respectively. All mixes were tested for fresh properties of slump flow diameter and time, V-funnel time, L-box height ratio, dry density and compressive strength. The results of fresh properties for all mixtures satisfied the requirements recommended by EFNARC for SCC. However, the compressive strength of SCC mixes increased by the addition of UFESP up to 15% compared to the control mixture, then decreased and recorded 42 MPa for the mix containing 25% of UFESP. Meanwhile, the dry density decreased as UFESP utilization increased in the mixtures.

The influence of nanosunflower ash and nanowalnut shell ash on sustainable lightweight self-compacting concrete characteristics

“…5 . The results coincided with previous studies which investigated the impact of the various pozzolanic materials percentages usage on LWSCC filling capability 22 – 27 , 63 . Furthermore, when increasing the contents of NWSA and NSFA, the binder volume fraction and specific surface area are also raised due to the adsorbed water large quantity and the high surface area and the free water amount within the mortar was reduced 63 .…”

“…Thus, a part of Portland cement had to be substituted by other powders, such as pozzolanic or inert materials. Also, other materials have been widely approved in previous studies: metakaolin 12 , fly ash 13 – 16 , waste ceramic powder 17 – 19 , ground granulated blast furnace slag 20 , 21 and eggshell powder 22 , in addition to nano materials as Nano clay 23 – 26 . Bheel et al 27 investigated the impact of using metakaolin as a substitution for fly ash on the transport, mechanical, and fresh characteristics of LWSCC mixes.…”

Synergic effect of metakaolin and groundnut shell ash on the behavior of fly ash-based self-compacting geopolymer concrete

“…To tackle the problem of global warming, the world has made tremendous efforts to decrease the use of PC. These include the disposal of waste by-products by recycling these waste materials and the development of alternative binders for PC [6][7][8].The use of industrial/agricultural waste by-products like wheat straw ash (WSA) [9], coconut shell ash [10], ground granulated blast furnace slag (GGBFS) [11], wheat straw ash (WSA) [12], eggshell ash [13], metakaolin (MK), corn cob ash (CCA), millet husk ash (MHA) [14,15], açaí natural fibre [16], palm oil fuel ash [17], rice straw and cotton stalk [18], glass fiber [19], ceramic wastes [20], plastic waste [21], seashell [22], rubber [23] and other pozzolanic materials can assist in decreasing the requirement for PC in concrete, hence reduce the carbon dioxide discharges [2,24,25]. The addition of fly ash (FA) to concrete can significantly improve many of the properties of fresh and hardened concrete.…”

Eggshells from Different Countries of Origin and Their Sustainable Application as a Partial Replacement of Cement

“…Likewise, eggshells have also been effectively blended in cement along with silica fume (SF) [19][20][21], fly ash (FA) [22][23][24], rice husk ash (RHA) [25], rice straw ash (RSA) [26], glass powder [27], palm oil fuel ash (POFA) [28][29][30][31], and bagasse ash [32]. In addition, eggshells have been used in special concrete as well, both in uncalcined and calcined forms like Foamed concrete [33,34], self-compacting concrete [35][36][37][38][39], and geopolymer concrete [40]. In general, using eggshells either in an uncalcined or calcined state has a positive impact on the hydration kinetics of cementitious materials [41][42][43].…”