Sustainable incorporation of waste granite dust as partial replacement of sand in autoclave aerated concrete

Zafar, Muhammad Saeed; Javed, Usman; Khushnood, Rao Arsalan; Nawaz, Adnan; Zafar, Tayyab

doi:10.1016/j.conbuildmat.2020.118878

Cited by 63 publications

(35 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In our study, the greatest reduction occurred in M-FC with 26.5% at 180 days, whereas marginal differences in M-GF were achieved with respect to the control mortar at the different ages studied; in agreement with the findings of Ramos et al [ 43 ] and Ledesma et al [ 23 ] respectively. Regarding M-GF, the presence of pozzolanic reaction in mortars with GF has previously been reported [ 44 , 45 ], which agrees with the results since M-GF performance was similar to ref mix. In mortars made with ornamental rocks, pozzolanic activity was not found as in the reference mortar [ 46 ].…”

Section: Resultssupporting

confidence: 91%

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

et al. 2022

View full text Add to dashboard Cite

One way to contribute to sustainability in the construction sector is through the incorporation of construction by-products from their own activities. This work intends to extend the possibilities for enhancement of these by-products through the incorporation of four different ones, as fillers, in mortar production. The influence of these incorporations in mortar production was compared with a reference mortar with siliceous filler in its fresh state; workability, entrained air content and fresh density, and in its hardened state; capillary water absorption, water vapour permeability and shrinkage (up to 91 days); and adhesive, compressive, and flexural strength; the last two were studied over time (up to 180 days). Despite the reduction in compressive strength, both in the short and long term, there was a gain in adhesive strength when the construction by-products were incorporated. Regarding the physical properties and durability studied, no relevant differences were found with respect to the reference mortar. According to the European Specifications, these mortars could be used as regular or coloured rendering and plastering mortars, and masonry mortars, and these findings promote the circular economy in the construction sector.

show abstract

Section: Resultssupporting

confidence: 91%

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Lower weight loss in this region shows that Ca(OH) 2 was consumed by the WSA, confirming the pozzolanic activity. Similar trends of lower weight loss in the second region were observed in the published literature [ 87 , 88 ], which depicted the extent of higher pozzolanic activity with a lower concentration of portlandite. The third weight loss region is associated with the decarbonization of cement paste, which can be used as an indicator of hydration degree at the initial stage (24 h) [ 86 ].…”

Section: Discussion Of Resultssupporting

confidence: 88%

Incorporation of Wheat Straw Ash as Partial Sand Replacement for Production of Eco-Friendly Concrete

et al. 2021

Self Cite

View full text Add to dashboard Cite

The depletion of natural sand resources occurs due to excessive consumption of aggregate for concrete production. Continuous extraction of sand from riverbeds permanently depletes fine aggregate resources. At the same time, a major ecological challenge is the disposal of agricultural waste ash from biomass burning. In this study, an environmental friendly solution is proposed to investigate the incorporation of wheat straw ash (WSA) by replacing 0, 5, 10, 15, and 20% of sand in concrete. Characterization results of WSA revealed that it was well-graded, free from organic impurities, and characterized by perforated and highly porous tubules attributed to its porous morphology. A decrease in fresh concrete density and an increase in slump values were attained by an increase in WSA replacement percentage. An increasing trend in compressive strength, hardened concrete density, and ultrasonic pulse velocity was observed, while a decrease was noticed in the values of water absorption with the increase in WSA replacement percentages and the curing age. The WSA incorporation at all replacement percentages yielded concrete compressive strength values over 21 MPa, which complies with the minimum strength requirement of structural concrete as specified in ACI 318-19. Acid resistance of WSA incorporated concrete improved due to the formation of pozzolanic hydrates as evident in Chappelle activity and thermogravimetric analysis (TGA) results of WSA modified composites. Thus, the incorporation of WSA provides an environmentally friendly solution for its disposal. It helps in conserving natural aggregate resources by providing a suitable alternative to fine aggregate for the construction industry.

show abstract

“…The compressive strength loss in HCl solution was 19.44% and 13.14% for the control and 20% for the replacement samples. The compressive strength losses in H 2 SO 4 solution were 27.88% and 12.82%, respectively, indicating that granite waste aggregate effectively improves the acid resistance of concretes [36,37]. The water absorption of concretes was tested using magnetized water with higher water molecular activity, and it was found that concrete with granite waste had a reduced water absorption and significantly improved compressive strength and acid erosion resistance [38].…”

Section: ) Compressive Strengthmentioning

confidence: 98%

Recent Advances in the Reutilization of Granite Waste in Various Fields

Wang

Zhan

et al. 2021

J. Mater. Sci. Technol. Res.

View full text Add to dashboard Cite

Quarrying and processing of granite produce large amounts of waste residues. Besides being a loss of resources, improper disposal of these wastes results in pollution of the soil, water and air around the dumpsites. The main components of granite waste are quartz, feldspars and a small amount of biotite. Due to its hard and dense texture, high strength, corrosion resistance and wear resistance, granite waste may be recycled into building materials, composite materials and fine ceramics, effectively improving their mechanical properties and durability. By using the flotation process, high value-added products such as potash feldspar and albite may be retrieved from granite waste. Also, granite waste has the potential for application in soil remediation and sewage treatment. This review presents recent advances in granite waste reutilization, and points out the problems associated with its use, and the related countermeasures, indicating the scale of high value-added reutilization of granite waste.

show abstract

Sustainable incorporation of waste granite dust as partial replacement of sand in autoclave aerated concrete

Cited by 63 publications

References 38 publications

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

Performance of Sustainable Mortars Made with Filler from Different Construction By-Products

Incorporation of Wheat Straw Ash as Partial Sand Replacement for Production of Eco-Friendly Concrete

Recent Advances in the Reutilization of Granite Waste in Various Fields

Contact Info

Product

Resources

About