Investigation of agro-forestry and construction demolition wastes in alkali-activated fly ash bricks as sustainable building materials

Large CO2 reduction and enhanced thermal performance of agro-forestry, construction and demolition waste based fly ash bricks for sustainable construction

“…A study on CO 2 emissions caused by agro-forestry, C&D waste based fly ash bricks and its comparison with burnt clay bricks, embodied energy calculation along with thermal (building envelope) analysis are reported and discussed in detail. The present work may be considered as the continuation of authors’ previous work done on properties evaluation of agro-forestry waste and C&D waste based fly ash bricks 26 .…”

“…The elemental, compositional and quantitative analysis of fly ash, GGBFS, rice straw and forestry leaves have been mentioned in Table 1 and detailed study in the authors’ previous publications 26 , 32 . The mechanical performance of the alkali activated fly ash (AA-FA) bricks was analysed by compressive strength test in accordance with relevant Indian standard codes 34 – 36 .…”

“…However, the incorporation of treated/untreated agro-waste straw fibres, dried forestry leaves along with C&D wastes in construction materials has been scarcely reported. The effect of agro-forestry content viz., rice straw, dried forestry leaves with C&D waste and GGBFS addition on mechanical, thermal, acoustical and fire related properties of alkali activated fly ash bricks have been done in detail in the authors’ previous study 26 . The study has shown promising results of agro-forestry waste addition along with slag and C&D waste in fly ash bricks with 5 M alkali solution with compressive strength of 8–15 MPa, acoustic isolation of 35–50 dB and thermal conductivity of 0.4–0.5 W/m K.…”

Physical-Mechanical Behavior of CDW and Tire Flake Integration in Building Block Manufacturing

“…The demand for buildings is increasing day by day. According to statistics, in 2018, the total investment in the construction industry (public and private) was USD 11.4 billion, and it is estimated that by 2025, it will be USD 14 billion, which translates into a greater need for materials such as cement, aggregates, steel, and wood [3], in the case of natural aggregates (gravels and sands), which could be replaced with residues, such as those from concrete demolition. These usually come from nonrenewable natural resources.…”

“…These usually come from nonrenewable natural resources. This industry has significant impacts on the use of water (50%) and energy (45-50%) and the loss of agricultural land (80%), among others [3,4]. In addition, there are challenges such as avoiding the generation of greenhouse gases, reusing materials, recycling materials to avoid the exploitation of geomaterials from nearby material banks, avoiding the accumulation of solid waste, aiding the circular economy, and supporting communities in their need for housing.…”