Study on Characteristics of Lightweight Aggregate Concrete Made From Foam and Ordinary Portland Cement (original) (raw)
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Advanced Materials Research, 2013
Performances of lightweight foamed concretes that are made from partial substitution of waste clay brick as coarse aggregate has been investigated in this study. The research aims were to identify the properties and characteristic of lightweight foamed concrete using waste clay brick as alternative materials to reduce the depletion of normal coarse aggregate from granite. Four different percentages of concrete mixtures using new coarse aggregate have been prepared that consist of 25%, 50%, 75%, and 100% waste clay brick. Foamed were injected into concrete mixture to produce lightweight concrete with appropriate proportions. The samples have undergone several testing including compression test, water absorption test, workability test and density test. From the results obtained, lightweight concrete that were produced with 25% substitution of waste clay brick showed the highest compressive strength of 25 MPa with density of 1647 kg/m 3 .
Development and Properties of Foamed Synthetic Lightweight Aggregates
The purpose of this study is to create and evaluate various foamed synthetic lightweight aggregates (FSLA) with a reduced density for the possible use as coarse aggregate replacement within concrete. The synthetic aggregates were foamed utilizing extrusion processes with both chemical and physical foaming agents. The formulations incorporated high carbon fly ash with several different polymer matrix materials. Following the production of the synthetic coarse aggregates, concrete samples were produced using the FSLA as coarse aggregate. The unit weight and compressive strength of these concretes were compared to concrete made with normal weight crushed stone as the coarse aggregate.
Performance of Lightweight Foamed Concrete with Waste Clay Brick as Coarse Aggregate
APCBEE Procedia, 2013
Performances of lightweight foamed concretes that are made from partial substitution of waste clay brick as coarse aggregate has been investigated in this study. The research aims were to identify the properties and characteristic of lightweight foamed concrete using waste clay brick as alternative materials to reduce the depletion of normal coarse aggregate from granite. Four different percentages of concrete mixtures using new coarse aggregate have been prepared that consist of 25%, 50%, 75%, and 100% waste clay brick. Foamed were injected into concrete mixture to produce lightweight concrete with appropriate proportions. The samples have undergone several testing including compression test, water absorption test, workability test and density test. From the results obtained, lightweight concrete that were produced with 25% substitution of waste clay brick showed the highest compressive strength of 25 MPa with density of 1647 kg/m 3 .
Development of High Strength Lightweight Foamed Concrete with Low Cement Content
Research Square (Research Square), 2022
Foamed concrete has versatile applications in the construction industry due to its lightweight nature and lower thermal conductivity. Compared to Autoclave Aerated Concrete (AAC), it also consumes low energy during its production. But, its weak structural behaviour restricted its applications in structural members. In the present study, the effect of a wide selection of ller on the compressive strength of foamed concrete has been studied. The present investigation shows that the lightweight concrete made with low cement content could achieve strength up to 15 MPa. Further, the effect of some Supplementary Cementitious Materials (SCMs) such as y ash and silica fume on the tensile strength and shrinkage properties of foamed concrete has also been studied. Scanning electron microscopy (SEM) has been used to analyze the effect of different llers on the properties of foamed 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...
Evaluation of the lightweight foamed concrete characteristics
Challenge Journal of Concrete Research Letters
The purpose of this paper is to assess the properties of light weight foamed concrete. In this research, two phases are investigated. The first stage explored the characteristics of fresh and hardened foamed concrete using a foaming agent. The following parameters were employed in this study: foaming agent used as a volume of concrete mix by 10, 20, and 40%, fly ash used as a replacement of cement content by 10, 25, and 50%, and polypropylene fiber used with varied volume fractions of 0.5, 0.75, and 1.0%. Slump values are applied to evaluate the fresh properties. To evaluate the hardened concrete, the dry density and compressive strength at 7 and 28 days are computed. Furthermore, the 28-day tensile splitting strength and flexural strength are studied. The effect of a high temperature was evaluated. The second stage investigated the effects of polypropylene fiber on both fresh and hardened concrete. It was observed that foaming agents improve fresh characteristics while decreasing c...
Compressive strength of lightweight foamed concrete using artificial aggregate from palm oil clinker
2012
Malaysia as one of the world's largest exporter of palm oil has been facing problem in disposing palm oil clinker, a by-product of palm oil mill since many years ago. Through public concerns and research efforts, the agro waste by-product materials have potential to be utilized as construction material to replace conventional sand in lightweight foamed concrete (L WC). In this study, the effectiveness of agro waste ash by-product namely palm oil clinker (POC) was developed as an alternative material to replace the sand. The effect of using different percentages of POC to L WC due to compressive strength was investigated. Five series of mix formulation of L WC with mix density of 1600kg/m3 were prepared that comprise of 0%, 25%, 50%, 75% and 100% as sand replacement from the total weight of sand was replaced with POC. All the L WC samples are cured in air curing for different curing ages namely 7, 28 and 60 days. The result revealed that the higher compressive strength was achiev...
ITM Web of Conferences
This paper reports on a study of physical properties of lightweight cement composite. We investigate the possibility of replacing traditional aggregate with Granulated Ash Aggregate (GAA) and above all with Granulated Expanded Glass Aggregate (GEGA). For this purpose, 15 specimens of different percentage share of each aggregate in total aggregate volume were tested: 0%, 25%, 50%, 75% or 100% of foam glass aggregate (GEGA) partially replaced by ash aggregate (GAA) content in the cement composite. The water-cement ratio was constant and equal to w/c=0.5. Three grain sizes were analyzed: 2mm, 4mm (both GEGA) and 8mm (GAA). Numerical simulations of concrete specimen behavior under static loading were conducted with the implementation of elastic plastic model of each component. The study shows a significant impact of grain type and size on physical properties of lightweight concrete. Due to lower density of foamed glass aggregate, specimens shows various apparent density and porosity, which affect concrete properties. Compressive strength of concrete decreases with the increase in foam glass aggregate content; however specimens show different workability and in consequence porosity of lightweight concrete.