An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... 3D printing construction techniques are believed to have potential sustainability benefits, including improved resource efficiency, increased construction productivity, and construction of complex geometries without supporting structures. 3D printable concrete materials, when introducing industrial wastes such as fly ash, silica fume, and slag, may also bring additional sustainability benefits. Th ...
... With the scarcity of land and rapid drive towards sustainable development, numerous research studies are conducted on diverting waste from landfills. However, majority of these studies are focused on either experimental investigation of material characteristics or environmental impacts. Due to heavy virgin material usage, building material manufacturing industries are increasingly interested in us ...
cement; compression strength; concrete; feasibility studies; industrialization; industry; leachates; municipal solid waste; pollution; population growth; porosity; toxicity; ultrasonics
Abstract:
... Increased water demand due to population growth and industrialization has led to increased water consumption. Hence, it is required to find an alternative to water in different industries. Concrete represents a remarkable water-consuming industry. The present study investigates whether the treated leachate of municipal landfills can be employed as a substitute for water in the concrete mixing sche ...
carbon; carbon footprint; case studies; concrete; industry; models; transportation
Abstract:
... There are numerous strategies that can be used to reduce the embodied carbon footprint of real property investments, many of which can be accomplished for no additional cost and with minimal performance impacts. This study aims to propose the incorporation of the life cycle carbon quantification into the government procurement of real property process in order to reach out to low-carbon durable an ...
... This study aims to examine the mechanical, environmental, and economic properties of recycled aggregate concretes produced using emerged recycled concrete aggregates from the buildings that were demolished in a controlled way after the 24 January 2020, Elazig-Sivrice earthquake. For this purpose, 24 series of recycled aggregate concretes were produced, water-to-cement ratios of 0.30–0.35–0.40–0.45 ...
... Urease is a dinickel enzyme commonly found in numerous organisms that catalyses the hydrolysis of urea into ammonia and carbon dioxide. The microbially induced carbonate precipitation (MICP) process mediated by urease-producing bacteria (UPB) can be used for many applications including, environmental bioremediation, soil improvement, healing of cracks in concrete, and sealing of rock joints. Despi ...
... This paper provides a comprehensive review on the research of coir fibre and coir fibre reinforced cementitious composite (CFRC) in the past 20 years. In the first part, the extraction process, morphology, density, chemical composition, and tensile performance of coir fibres are discussed. Then, the pull-out performance, physical properties (i.e., density, thermal and acoustic insulation), short- ...
... This paper reviews the potential use of silico-manganese slag (SiMnS) as binder and aggregate in Portland cement and geopolymer concrete. SiMnS is a byproduct of alloy steel production. Depending on the process of solidification, the slag is available in crystalline hard stone type and granulated glassy form. The latter one is more reactive due to the presence of amorphous phases. Therefore, granu ...
... Improper disposal and accumulation of solid waste can cause a number of environmental problems, such as the heavy metal contamination of soil. Microbially induced calcium carbonate precipitation (MICP) is considered as a promising technology to solve many environmental problems. Calcium-based solid waste can be utilized as an alternative source of calcium for the MICP process, and carbonate-based ...
... Recycling of waste and disposal has become a vital environmental issue that creates serious concern worldwide. The use of waste material in pavement structure is one of the essential initiative for the future towards sustainable environment. This study imparts a review on waste materials such as plastic waste, crumb rubber, glass fibre, steel slag, crushed concrete and Low Density Polyethylene (LD ...
... Ignimbrites are extensively used in historical places, houses, hospitals, mosques, graveyard stones etc. worldwide especially in Ahlat-Bitlis, Turkey. These stones have prominent features such as good-insulation, durability and lightness. Another natural material that is widely preferred in the construction sector due to its advantages is pumice. In this paper, ignimbrites in black, light yellow, ...
... Durability performance of concrete is enhanced by adding supplementary cementitious materials such as fly ash. The concrete made with addition of fly ash with Portland cement is called fly ash cement concrete (FACC). Generally, modelling approach is applied to predict the service time of concrete in aggressive environment. Most degradation of concrete is found in marine environment, due to the exp ...
concrete; environmental protection; equations; hardness; prediction; rubber; temperature
Abstract:
... Rubber has superior performance and is widely used, but it is easy to age under the influence of the environment, which leads to the decline of its performance. Rubberized concrete is a new type of building material, which attracts attention because of its environmental protection and good dynamic performance. Based on the environment of rubber in rubberized concrete, the accelerated aging test of ...
... The objective of this study was to synthesize a sustainable concrete material from readily available waste and by-products; Ground Granulated blast furnace slag (GGBFS) and waste foundry sand (WFS). GGBFS was alkali-activated using NaOH solution and used as a binder to completely replace Ordinary Portland cement (OPC). Concurrently, WFS was used as fine aggregate to replace natural sand in concret ...
concrete; construction industry; polyethylene terephthalates; porosity; rubber; steel; sustainable development
Abstract:
... Numerous studies investigated the possibility of incorporating plastic wastes in concrete mixtures, thus contributing to efficient management and sustainable development of the construction industry. This paper investigates the possibility of reducing the water-to-cement ratio and/or incorporating steel fibers or polymeric latexes to mitigate the drop in structural properties of reinforced concret ...
... The potential use of carbonaceous sugarcane bagasse as carrier media of Bacillus subtilis in amending microstructure and corrosion inhibition of reinforced concrete is explored in this study. The chlorides migration inside the concrete, electrochemical performance of embedded steel along with healing and densification in microstructure were assessed. There was a 53.78% reduction in the depth of mi ...
circular economy; concrete; construction industry; governance; green chemistry; issues and policy; people; sand; subsoil; waste management; wastes; China
Abstract:
... Abandoned materials and substances generated during construction, renovation, and demolition activities are collectively referred to as construction and demolition (C&D) waste. Inert C&D waste materials, such as sub-soil, sand, stone, and concrete, could be either directly reused on another construction site or recycled. Therefore, real-time information about site locations, dates, categories, pri ...
European Union; circular economy; concrete; environment; management systems; waste management; wastes; Europe
Abstract:
... The construction sector is the biggest driver of resource consumption and waste generation in Europe. The European Union (EU) is making efforts to move from its traditional linear resource and waste management system in the construction sector to a level of high circularity. Based on the theory of circular economy, a new paradigm called waste hierarchy was introduced in the EU Waste Framework Dire ...
COVID-19 infection; Orthocoronavirinae; case studies; cement; compression strength; concrete; environment; environmental impact; modulus of elasticity; pandemic; rubber; ultrasonics; wastes; Australia
Abstract:
... The use of single-use nitrile gloves has been on a sharp incline since the Coronavirus pandemic first started in late 2019. This led to a significant increase in the generation of this clinical waste that requires various recycling solutions to reduce its environmental impact from disposal or incineration. This paper explores its application in structural concrete by adding shredded nitrile gloves ...
... One of the feasible solutions for the solid waste management problem is to use recycled plastic waste as a replacement for natural aggregates in construction applications, which reduces pollution and protects natural resources from depletion. Corrosion of steel reinforcement due to carbonation is one of the important factors affecting the durability of reinforced concrete, which leads to a decreas ...