Concrete is prepared by mixing various materials like cement, Water, aggregates etc. which are economically available. IS 8112 is used for the work. The fine aggregate used in this investigation was clean river sand, whose maximum size is 4.75 mm, conforming to grading zone II. Machine crushed blue granite stone is used as coarse …
In the present paper, an investigation on the natural and anthropic radioactivity and heavy metals content in a basalt aggregate for concrete from Sicily, Southern Italy, was performed as a case study. In particular, the evaluation of the specific activity of radium-226, thorium-232, potassium-40 and caesium-137 radionuclides was …
Nowadays, nearly one ton of concrete is produced each year for every human being in the world on average. On one hand, the use of recycled materials in cement and concrete production helps to reduce raw materials and urban land occupation. However, on the other hand, the recycled materials used as partial …
Carbon capture and utilization for concrete production (CCU concrete) is estimated to sequester 0.1 to 1.4 gigatons of carbon dioxide (CO 2) by 2050.
The fabrication of conventional concrete, as well as remains from demolition, has a high environmental impact. This paper assessed the eco-efficiency of concrete made with uncarbonated recycled concrete …
Concrete is made up of aggregate materials – primarily rocks and sand – along with cement and water. Because about 80% of concrete's carbon footprint comes from cement, researchers have ...
Crushing, screening, and washing may be used to process aggregates from either sand and gravel deposits or stone quarries. Aggregates may be produced from igneous, …
Numerous studies show the potential of recycling aggregates such as ceramics [ 1 ], rubber [ 2, 3 ], glass [ 4 ], and demolition wastes (bricks and concrete). Due to the high amount of concrete from demolition wastes, …
Multirecycled concrete aggregates in concrete production. Jorge de Brito, ... Carlos Thomas, in Waste and Byproducts in Cement-Based Materials, 2021. Abstract. Because …
alternative materials in place of natural aggregate in concrete production makes concrete as sustainable and environmentally friendly construction material. Coconut shell being a hard and not easily degrade material if crushed to size of sand can be a potential material to substitute sand. At present, coconut shell has also
Concrete is made up of aggregate materials – primarily rocks and sand – along with cement and water. Because about 80% of concrete's carbon footprint comes from cement, researchers have...
One approach to tackle the problems created by the vast amounts of construction and demolition waste (CDW) generated worldwide while at the same time lengthening concrete durability and service life is to foster the use of recycled aggregate (RA) rather than natural aggregate (NA). This article discusses the use of polyhydroxyalkanoates (PHAs) …
Carbon capture and utilization for concrete production (CCU concrete) is estimated to sequester 0.1 to 1.4 gigatons of carbon dioxide (CO2) by 2050. However, existing estimates do not account for ...
the first research on the use of WG for building materials. The authors recycled WG into useful glass particles for wall-panel production. Subsequently, a significant study was conducted in order to use recycled glass for fine or coarse aggregate in mortar and concrete, because of the good hardness of the glass [14,28,29].
The present study proposed the utilisation of high-volume fly ash in the production of Self-Compacting Concrete (SCC) made with varying proportions of coarse and fine recycled aggregates.
Concrete is a material that is weak in tension so the formation of cracks is a more frequent problem in the tension zone. ... Usage of fly ash reduces the CO 2 emission during concrete production [7] Fly ash aggregates are having more pores at the initial stage, these are useful in holding the bacteria and behave like capsules. These …
Material Study - Concrete, Masonry, Glass, Timber & Plastic
The characteristics of recycled and secondary aggregates: coarse recycled concrete aggregate (RCA), fine glass cullet aggregate (GCA) and fine copper slag aggregate (CSA), and their effects on concrete deformation properties: elastic modulus, creep and shrinkage, have been studied. A novel Analytical Systemisation method was
artificial aggregates production also found to address the disposal issue in these industrial waste along with concern for healthy environment [2]. This paper …
The prepared bagasse fly ash and coconut shell fly ash aggregates are shown in Figures 5(a) and 5(b). The diameter of the artificial aggregate produced ranged from 4.0 mm to 16.0 mm, which was ...
The production of self-compacting concrete (SCC) using RCA is an emerging field in the construction sector. However, the highly porous and absorptive nature of adhered mortar on RCA's surface leads to reduced concrete strength, which can be removed with the application of various techniques, such as acid treatment.
aggregate coconut shell can be used in construction. 6. Advantages Coconut shells are more resistant towards crushing, impact and abrasion. Easily available in local areas like temple, grocery shops etc. Producing concrete by reducing cost of material. It has excellent workability as compared to conventional concrete.
The aggregate/cement ratios (60:40, 50:50, and 40:60) have densities between 1,200 and 1,900 kg/m 3 for traditional aggregates (Koksal et al., 2020a; …
The quarries in the sites produce the aggregate material for concrete production. The field studies and laboratory tests were carried out in the previous studies (Adiguzel 2012 ). The quarries have different rocks and properties (Figs. 1, 2 ). The block samples were obtained from the two quarries.
Aggregate concrete is one of the most important civil engineering materials. It is made up of cementitious materials, aggregates, water, and admixtures in a certain proportion. …
The quality of concrete is extremely important for the construction and mining sectors. One of the most important factors determining the quality of concrete depends on aggregates, which are not always homogeneous. On the other hand, there is an obligation to use aggregates obtained from different quarries. In such cases, the …
The aim of this study was to investigate the feasibility of utilizing sawdust in a concrete. The mix ratio adopted to prepare concrete is 1:1.5:3 with a water-to-cement ratio of 0.55 natural sand used as a …
Five aliquots of the basalt aggregate for concrete were collected in February 2022, from basalt outcrops, at depths of a few centimeters, and reduced to a coarse grain size by mechanical procedures.
This paper reviews several key issues related to the use of natural aggregates for concrete production in the Malaysian construction industry. In addition, …
This research work includes experimental study, performed to explore the properties of reused concrete aggregate collated with that of natural concrete aggregate.
Recycled materials such as recycled concrete aggregate or recycled brick aggregate from construction and demolition waste, waste glass from municipal waste or recycled waste gypsum from gypsum boards are able to use as replacement of primary raw materials in cement and concrete production.
This paper presents an original study on the use of coarse recycled concrete aggregate (CRA) to obtain self-compacting concrete. Concrete with substitution ratios of 20%, 50% and are compared with a control concrete. The purpose of this comparison is to check the influence of CRA on fresh SCC as well as its physical and …
At present, rock flour is used as a basement filling material and as alternate to fine aggregate in concrete making. The rock flour of its abundant availability at rock crushing plant and its granular character can be assessed for its usage as better engineering material particularly in reinforced soil constructions by evaluating with reinforcing …
Recycled aggregates are acquired from the various processing of materials previously used in construction activities as show in Fig. 1. Illustrations incorporate reused concrete from construction and demolition waste material (C&D), recovered aggregate from asphalt pavement. Coarse Recycled Concrete Aggregate (RCA) is delivered by …
Fly ash Aggregate Bacillus Subtilis Compressive strength 1. Introduction Due to the increasing utilization of concrete, constituent materials are also increasing day by day. The properties and behaviour of concrete are changing according to …
The light block obtained by using 60% perlite by volume gave a lower thermal conductivity value than the G2 class aerated concrete block. In a study where lime as a binder, hemp and perlite as a filling material were used together, there was a decrease in thermal conductivity values with an increase in the amount of perlite [44].
For this, 5%, 10%, 15%, 20%, 25%, 30% and 35% of rice husk ash has been introduced in natural aggregate concrete (NAC) and recycled aggregate concrete (containing coarse recycled concrete ...