Proportioning of Lightweight Concrete by the Inclusions of Expanded Polystyrene Beads (EPS) and Foam Agent (original) (raw)
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Lightweight Expanded Polystyrene Beads Concrete
With increase in demand for construction materials, man has improved a lot in construction techniques of structures. In earlier ages structures were constructed with heavy materials, but in this modern era of construction old techniques are being more costly due to heavy loading. So the uses of lightweight materials are started. The Expanded polystyrene beads are the material which substitutes in the place of coarse aggregate. The main objective of this investigation is to find a concrete mix proportion which gives better results than the Burnt Brick (compressive strength and density), and to study the properties, such as density, compressive strength and splitting tensile strength of lightweight Expanded Polystyrene (EPS) beads concrete. Then its properties are compared with M20 grade conventional concrete.
Journal of Applied Engineering Sciences
This paper deals with the behaviour of cement paste upon the addition of crushed polystyrene foam. Crushed polystyrene foam waste with a fill density of 13.97 kg/m3 and hydrated lime were used to prepare the foam. Three different types of samples S-1, S-2, and S-3 were prepared to observe the behaviour of cement pastes after the addition of different doses of foam in constant water/cement ratio. The volumetric ratio of EPS and cement paste were 1: 1.294; 1: 0.863; and 1: 0.647. In each type of sample, 0.28 water/cement ratio is maintained. Slump test was carried out in the fresh state and it has been found slump value was decreasing by increasing foam content in concrete sample. On the 7th and 28th day of curing process, the compressive strength test was carried out. Compressive strength and density of concrete samples also decreasing by addition of higher foam content. In addition, water absorption test and microscopic analysis tests were carried out on the 28th day of curing proce...
IRJET, 2023
The major goal of this work is to examine the characteristics of concrete incorporating Expanded Polystyrene (EPS) beads, including compressive and tensile strengths. Its characteristics are contrasted with those of regular concrete, which is concrete without EPS beads. As a partial replacement for coarse aggregates, EPS beads are employed. The findings indicated that the qualities of hardened concrete are affected by the number of polystyrene beads added to the concrete. When compared to concrete, it was discovered that the compressive strengths of 0.1%, 0.2%, 0.3%, 0.4%, and 0.5 % EPS integrated concrete were 94%, 82%, 75%, 62%, and 52%, respectively. It can't absorb water because it has a closed-cell structure. It is impact resistant and exhibits high sound and thermal insulation properties. Foams made of polystyrene cannot decompose naturally.
IRJET, 2022
Utilizing the most latest technology to reduce the structural load, light weight concrete (LWC) is the building material used in the construction of buildings. It is possible to limit the destruction or setbacks during a seismic tremor or any ecological effect by reducing one's weight or the dead heap of the structure or kaleidoscopic characteristics. Lightweight cement can be produced by mixing aluminum powder as an air-entraining agent into regular blend concrete, either with or without coarse mud total, or by using light weight earth totals (Pumice stone) or volcanic stone. This study describes a light weight cement of M20 grade that is pretended to be made of extended polystyrene globules and extended soil mud totals mixed with various amounts and water concrete proportions. Concrete, manufactured sand (M-Sand), fly debris (class F), ground granulated blast furnace slag (GGBS), polypropylene strands, EPS, benzoyl alcohol and water, as well as other materials, have all been used. For the reason that it is thinner, CLC is frequently used. In this exploratory investigation, cemented blocks with EPS dabs were subjected to water quality, compressive strength, and thermal conductivity testing. The addition of fly debris and GGBS reduced water interest by reducing hydration and carbon impression, which resulted in a decrease in shrinkage, but it also reduced the blocks' compressive strength by roughly 25 to 50 percent. In general, lightweight cement is referred to be concrete with a thickness of less than 1800 kg/m3. This inquiry focuses on the examination of lightweight cement with expanded polystyrene dots.
Open Engineering
This research investigated the feasibility of using waste-expanded polystyrene (EPS) and mortar to produce lightweight aggregate (LWA). The EPS extracted from the leftover backing waste was crushed into beads using an electric grinder and mixed in three different proportions with two types of mortars (with and without a superplasticizer). Physical property tests such as loose bulk density and water absorption were carried out for the LWA. Also, the compressive strength of the manufactured lightweight aggregate concrete (LWAC) was determined, and failure modes were discussed. The results indicate that using the EPS is effective for LWA. The loose bulk density is obtained at a range from 588 to 790 kg/m 3 790\hspace{0.33em}{\text{kg/m}}^{3} , which meets the requirements of the American society for testing and materials C330 specification of LWA. For water absorption, the value obtained ranges from 6.45 to 14.05%, slightly higher than the normal aggregate due to the voids in the LWA. ...
The Strength and Water Absorption of Heated Expanded Polystyrene Beads Lightweight-Concrete
International Journal of GEOMATE, 2021
When an earthquake occurs, buildings experience a movement or mass transfer. Therefore, the use of lightweight building materials is expected to reduce the effects of the earthquake. Research on the use of expanded polystyrene (EPS) as a substitute for aggregate has been done, but the results obtained are far from the requirements of structural concrete. This research tried to improve the mechanical ability of EPS concrete with the innovation of giving heat treatment to the EPS (heated EPS) to make the bonding capacity between the concrete components better than EPS without heat treatment. This research was a low-risk laboratory-based experimental study, which involves the process of making lightweight concrete from EPS beads that replace part of the aggregate. The method examined the lightweight concrete with partial replacement of aggregate with EPS beads (with the ratio of EPS beads to fine aggregate=0%:100% ; 20%:80% ; 40%:60% ; 60%:40% ; 80%:20%). The results found that the heat treatment of EPS beads changes the internal structure of EPS which can make the pores smaller and the surface structure of EPS becomes rough so that it can provide better bonding and adhesion between concrete elements. The compressive strength of heated EPS concrete tends to be higher 2-10MPa compared to EPS concrete without prior heat treatment.
Civil Engineering and Architecture, 2022
A study has been undertaken to assess some characteristics of foamed concrete, with a given density of 1200 kg/m3, made with expanded polystyrene foam aggregate (EPS). In addition, EPS particles were thermally treated to produce modified expanded polystyrene foam aggregate (MEPS). Thermally treating approach was applied as an effective method to enhance strength of expanded polystyrene foam particles leading to enhance the properties of produced concrete. To investigate the effect of foam presence, normal concrete mix was designed and compared with foamed concrete mix produced with the same mortar content. Properties such as compressive strength, tensile strength and drying shrinkage were assessed. It was found that adding recycled expanded polystyrene foam (EPS) as aggregates helped in slightly enhancing both the strength and shrinkage of foamed concrete. However, thermally treated of EPS to produce MEPS particles resulted in increasing the compressive and tensile strengths by about 68% and 79%, respectively; and reducing the shrinkage by about 52% of that of conventional foamed concrete mix, without EPS. In addition, adding polystyrene aggregates in both states (EPS and MEPS) slightly reduced the spread diameter.