Design of eco-efficient housing with sustainable alkali-activated bricks

Gavali, Hindavi R.; Ralegaonkar, Rahul V.

doi:10.1016/j.jclepro.2020.120061

Cited by 21 publications

(7 citation statements)

References 12 publications

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“…Thus, utilization of sustainable materials such as by-products of various agro-industrial activities is being tested for their suitability in the construction sector, as their disposal is quite challenging. The inclusion of microsilica, sugarcane bagasse ash (SBA), bio-briquette ash (BBA), and co-fired blended ash (CBA) in the construction process has improved the performance of construction products [20][21][22][23][24]. Insertion of insulation materials into construction products has also resulted in making structures energy efficient, thermal resistant, cost effective, and reduced dead loads.…”

Section: Burnt Clay Bricksmentioning

confidence: 99%

Application of Sustainable Prefabricated Wall Technology for Energy Efficient Social Housing

et al. 2021

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Under the India “Housing for all” scheme, 20 million urban houses have to be constructed by 2022, which requires the rate of construction to be around 8000 houses/day. Previous results by the team show that present design methods for affordable buildings and structures in India need improvement. The challenges are the disposal of solid waste generated from agro-industrial activities and the energy peak demand in extremely hot and cold seasons. The development of bio-based urban infrastructure which can adapt to the climatic conditions has been proposed. Inclusion of sustainable materials such as agro-industrial by-products and insulation materials has resulted in effective environmental sustainability and climate change adaptability. Precast components are highlighted as a suitable solution for this purpose as well as to fulfil the need of mass housing. India has a lesser record in implementing this prefab technology when compared to a global view. For the first time, a novel and sustainable prefab housing solution is tested for scale-up using industrial waste of co-fired blended ash (CBA) and the results are presented here. A model house of real scale measuring 3 × 3 × 3 m3 was considered as a base case and is compared with 17 other combinations of model house with varying alignment of prefab panels. Comparison was made with commercially available fly ash brick and CBA brick with a conventional roof slab. A simulation study was conducted regarding cost and energy analysis for all the 18 cases. Various brick and panel compositions with CBA for housing were tried and the superior composition was selected. Similarly, 18 model houses of real scale were simulated, with different combinations of walls made of bricks or panels and different building orientations, to check the impact on energy peak cooling and cost. Results show that peak cooling load can be reduced by six times with bio-based prefab panels. Prefab construction can be considered for mass housing ranging above 100 housing units, each consisting of an area of 25 m2.

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Section: Burnt Clay Bricksmentioning

confidence: 99%

Application of Sustainable Prefabricated Wall Technology for Energy Efficient Social Housing

et al. 2021

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“…Water absorption and water permeability is such a parameter which shows the transport way of water but also provide water resistance capacity of alkali activated binders and concretes. Researchers studied the influence of liquid alkali activator and use of silica fume (SF) on durability and microstructural properties of AASC pastes [49,[71][72][73][74][75]. The linear regression of porosity versus compressive is shown in Fig.…”

Section: Water Absorption and Water Permeabilitymentioning

confidence: 99%

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Abhishek

Prashant

Kamath

et al. 2021

Innov. Infrastruct. Solut.

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This paper describes a review of the state-of-the-art research carried on the fresh and hardened properties of Alkali Activated Binders and Concretes. Though, many research have been carried out in the recent times on alkali activated binders, few key parameters still remain unattended, that restricts the commercial application of AAMs to the general construction activities. Fresh properties, mechanical strength and durability performance of Alkali activated concrete with various Alumino silicates as base materials is mentioned. An essential parameter of Alkali activated concrete is the concentration of alkaline solution on which various properties like mechanical strength, setting time and durability depends. Influence of wide range of concentrations from 6 to 16 M on these properties are studied and reported in this paper. This paper mainly concentrates on properties of readily available base materials such as Fly ash and Slag and the means to improve their performance through the use of various industrial and agro-based byproducts as additives. Problems pertaining to practical applicability of AAMs to general construction activities are also highlighted.

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“…Along with these, there were a few other types of cement partially mixed with fly ash and blast furnace slag called as Portland pozzolana cement (PPC) and Portland slag cement (PSC) respectively for its use at specific locations (Kumar Gangaram Singh and Kizhakkumodom Venkatanarayanan, 2020;Singla, Kumar and Alex, 2020). Apart from these, many other researchers have developed sustainable masonry products from sugarcane bagasse ash (SBA), biobriquette ash (BBA), re-cycled paper mill waste (RPMW), construction and demolition waste (C&DW), and co-fired blended ashes (Raut et al, 2012;Dakwale and Ralegaonkar, 2014;Madurwar, Mandavgane and Ralegaonkar, 2015;Sakhare and Ralegaonkar, 2016a;Ram, Ralegaonkar and Pradhan, 2017;Gavali and Ralegaonkar, 2020;Rathod et al, 2020). In order to conserve the operational energy demand of the structures, it is appropriate to design the building materials with low thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Development of sustainable prefabricated housing system by small-scale experimental model

Chippagiri

Brás

Ralegaonkar

2023

Proceedings of the Institution of Civil Engineers - Engineering

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Utilisation of unused industrial wastes and need for rapid volumetric construction led to the evolution of sustainable prefabricated housing elements, particularly for urban slums. An agro-industrial by-product as raw material and waste expanded polystyrene beads as the insulation material are chosen to develop a lightweight prefabricated construction element. This bio-ash is used as a partial replacement, 20% and 10% for the fine aggregates to prepare concrete and lightweight mix respectively. A small-scale model of one-third scale is conceptualised as per standards that include precast columns and beams as framed structure, and prefab panels as walling and roofing elements. These elements are developed as per the desired mix proportions of the identified raw materials. The respective laboratory specimens are evaluated for the physico-mechanical, durability, and thermal properties. The developed walling end-product is found to be 27% lighter, 8% stronger, 24% less water-absorbent, and 62% less conductive when compared with the properties of commercially available fly-ash brick. A solar photovoltaic panel is embedded into the model’s pitch roof that accommodates 71% of its generated energy to necessary electrical appliances. The material properties are found to be satisfactory for its on-site application and its final erection being 20% faster than conventional method.

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Design of eco-efficient housing with sustainable alkali-activated bricks

Cited by 21 publications

References 12 publications

Application of Sustainable Prefabricated Wall Technology for Energy Efficient Social Housing

Application of Sustainable Prefabricated Wall Technology for Energy Efficient Social Housing

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Development of sustainable prefabricated housing system by small-scale experimental model

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