Abstract
The utilization of cenosphere by-product of fly ash as a substitution of sand in concrete is an effective way to reduce thermal conductivity. This study investigates the mechanical and thermal properties of cenosphere substituted in the lightweight concrete. Cenosphere is the recycled material and possesses good thermal insulation properties. Study objectified replacement of sand over the FA cenospher to study the mechanical and thermal properties of the concrete. Experimental setup of the study 10%, 20% and 30% sand by weight is replaced with cenosphere. Concrete specimen prepares and cured for the period of 3, 7 and 28 d. Compressive strength of the concrete is analyzed for 3-7 and 28 d where tensile strength is analyzed for 28 d. Study shows significant improvement in the compressive strength and tensile strength. Thermal conductivity is analyzed for 28 d cured concrete samples using Heat flow FOX-50 instrument. Thermal conductivity reduces by 35% with the replacement of 30% sand over cenosphere which shows the significant reduction. Due to the lower density of cenosphere density of concrete samples reduced which is one of the leading factors to the lower thermal conductivity. Study concluded by replacement of 30% FA cenosphere compressive strength increased conversely thermal conductivity and density of the concrete specimen has reduced.
Highlights
Good Health & Well-BeingThe Bahai Gardens, Haifa/Photo: Fotol7ia
The trend of improvement among the population as a whole is supported by a drop between the two periods in the proportion of families and individuals living in poverty
This decline is well reflected among families with children, where the level of food insecurity dropped from rates of around 30% to around 20%
Summary
Israel stands united with all UN member states in the support and implementation of the 2030 Agenda for Sustainable Development, adopted at the UN Sustainable Development Summit on 25 September 2015. Israel has developed programs to encourage employment among populations suffering from high poverty rates, such as Haredim (ultra-Orthodox), Israeli Arabs, people on welfare and people with disabilities. These populations face various obstacles en route to the labor market, making it difficult for them to integrate into employment and leading to low income levels relative to the rest of the population. A school that meets the criteria for accreditation is granted certification
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have