Engineering properties of concrete with polystyrene granules

ALBARWARY

2019

juod

Concrete is a good constructional material as it posses enough compressive strength for structural purposes, in spite of that concrete has some dis-advantages, one of these main dis-advantages is its high density (2300-2400) kg/m³ .Many trials were made to minimize its density in different ways. Recently Expanded Polystyrene (EPS) granules (98% air) were added to the concrete for this purpose. In this investigation the concrete density is reduced by adding polystyrene granules to the silica-fume concrete. Silica-fume was added for enhancing the concrete strength and balances the loss in concrete strength due to the inclusion of polystyrene granules .Test results show that the inclusion of silica fume to the concrete improves its strength for both normal concrete and concrete of EPS beads. It is concluded that structural concrete (Strength > 17 MPa) with EPS beads can be manufactured when silica fume is added to concrete.

Section: Introductionmentioning

confidence: 99%

“…In this investigation a trial was made to reduce the concrete density by adding polystyrene granules to the silica-fume concrete. Silica-fume was added for enhancing the concrete strength ( 10,11) and it is expected to balance the loss in concrete strength due to the inclusion of polystyrene granules (1,5,9).…”

Section: Introductionmentioning

confidence: 99%

Use of Expanded Polystyrene (Eps) Beads in Silica-Fume Concrete

ALBARWARY

2019

juod

“…The expanded polystyrene concrete (EPSC) is often used as a subfloor, a roof pitch layer [1,2] or in fire retardant membranes in construction [3]. Some attempts were made to apply the EPSC for the production of precast wall elements [4].…”

Section: Introductionmentioning

confidence: 99%

Causes of damage and methods of repairing floor made on polystyrene concrete

Drobiec

Piotrkowski

2019

MATEC Web Conf.

The paper describes damages, tests and repair of the floor made on existing ceiling and expanded polystyrene concrete underlay. The floor was built on a reinforced concrete ceiling with an area of about 1050 m2. Significant damage in the form of cracks, detachments and unevenness was found in the floor. In order to determine the causes of damage, in situ tests and laboratory tests were carried out. It was found that the damage was caused by numerous performance errors. A test repair of the damage (4.7x6.0 m) was carried out, and then the repair method was applied on the entire floor surface.

“…The polystyrene is a plastic material in the form of granules and having the characteristics of MATEC Web of Conferences 195, 01021 (2018) https://doi.org/10.1051/matecconf/201819501021 ICRMCE 2018 low density and lightweight, and also its inter-grain space filled with air that can make a good insulation against the heat. In the past, several studies have shown that lightweight concrete has already involved the use of polystyrene in the concrete mixtures [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The influence of OPC and PPC on compressive strength of ALWA concrete

Aryani¹,

Tavio²,

Raka³

et al. 2018

MATEC Web Conf.

Lightweight concrete is one of the options used in construction in lieu of the traditional normal-weight concrete. Due to its lightweight, it provides lighter structural members and thus, it reduces the total weight of the structures. The reduction in weight resulting in the reduction of the seismic forces since its density is less than 1840 kg/m3. Among all of the concrete constituents, coarse aggregate takes the highest portion of the concrete composition. To produce the lightweight characteristics, it requires innovation on the coarse aggregate to come up with low density of concrete. One possible way is to introduce the use of the artificial lightweight aggregate (ALWA). This study proposes the use of polystyrene as the main ingredient to form the ALWA. The ALWA concrete in the study also used two types of Portland cements, i.e. OPC and PPC. The ALWA introduced in the concrete comprises various percentages, namely 0%, 15%, 50%, and 100% replacement to the coarse aggregate by volume. From the results of the study, it can be found that the compressive strength and the modulus of elasticity of concrete decreased with the increase of the percentage of the ALWA used to replace the natural coarse aggregate.