Utilization of Sugar Mill Waste Ash as Pozzolanic Material in Structural Mortar (original) (raw)
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Pozzolanic activity and filler effect of sugar cane bagasse ash in Portland cement and lime mortars
Sugar cane bagasse ash (SCBA) is generated as a combustion by-product from boilers of sugar and alcohol factories. Composed mainly of silica, this by-product can be used as a mineral admixture in mortar and concrete. Several studies have shown that the use of SCBA as partial Portland cement replacement can improve some properties of cementitious materials. However, it is not yet clear if these improvements are associated to physical or chemical effects. This work investigates the pozzolanic and filler effects of a residual SCBA in mortars. Initially, the influence of particle size of SCBA on the packing density, pozzolanic activity of SCBA and compressive strength of mortars was analyzed. In addition, the behavior of SCBA was compared to that of an insoluble material of the same packing density. The results indicate that SCBA may be classified as a pozzolanic material, but that its activity depends significantly on its particle size and fineness.
Characterization of sugar cane bagasse ash as supplementary material for Portland cement
Ingeniería e Investigación, 2014
Sugar Cane Bagasse is a by-product of the sugar agro-industry; it is partly used as fuel. However, bagasse ash (SCBA) is considered waste, which creates a disposal problem. Furthermore, if sugar cane bagasse is burned under controlled conditions, the SCBA can be potentially reused. This paper considers the technical viability of using SCBA as a partial replacement for cement. Two samples of SCBA from a Colombian sugar industry were characterized. The chemical composition of the samples shows high percentages of silica, 76.3% and 63.2%. The mineralogical and morphological characteristics of the waste were determined by X-ray diffraction patterns (XRD), thermal analysis (TG/DTA) and scanning electron microscopy (SEM). The pozzolanic activity of SCBA was evaluated using the Frattini test and the strength activity index test (SAI). The ASTM C618 defines an SAI of at least 75% as a requirement for classifying material as a pozzolan. This condition was achieved in the experiments performed. The results indicate that SCBA produced in the manufacture of commercial cements can be recycled for use as pozzolanic material. This supplementary material can partially replace cement and therefore reduce CO2 emissions.
Performance of mortars produced with the incorporation of sugar cane bagasse ash
Revista ingeniería de construcción, 2014
This paper presents the technical feasibility of using ash in mortars, from burning sugarcane bagasse, to generate power as a mineral admixture. The sugarcane bagasse ash (SCBA) underwent chemical characterization and x-ray diffraction tests. The milling of the material was studied, together with the composition of the mortars containing the SCBA at 3%, 5%, 8% and 10% ratios by weight, as partial replacement of fine aggregates. The mechanical properties were studied by compressive and diametral tensile strength tests. Some properties related to the durability of the material were also studied, such as drying shrinkage, capillary absorption and accelerated reactivity. The work was performed using low pozzolanic activity SCBA. However, the results indicate that it is possible to use SCBA as partial replacement of fine aggregates in the production of mortars.
In developing countries, accumulation of unmanaged agricultural waste has resulted in an increased environmental concern. Recycling of such agricultural wastes is the viable solution not only to pollution problem, but also the problem of land filling. In view of utilization of agricultural waste in concrete and mortar, the present paper reviews, utilization of sugarcane bagasse ash (SCBA) in different compositions that were added to the raw material at different levels to develop sustainable concrete and mortar. Various physico-mechanical properties of the concrete and mortar incorporating sugarcane bagasse ash are reviewed and recommendations are suggested as the outcome of the study. The study in turn is useful for various resource persons involved in using SCBA material to develop sustainable construction material.
INFLUENCE OF BAGASSE ASH REPLACEMENT ON STRENGTH PROPERTIES OF CEMENT MORTAR
IAEME, 2019
Sugar cane bagasse ash (SCBA) is generated as a combustion by-product from the boilers of sugar factories. This work deals with assessing the feasibility of using Sugar cane bagasse ash (SCBA) as a partial replacement for cement in mortar. Characterization of SCBA (SEM and chemical composition) demonstrated the high pozzolanic nature of SCBA. Masonry mortar of grade MM3 was considered for trial mix. The cement was partially replaced with 10%, 15% and 20% of the SCBA. The fresh properties of mortar mixes were assessed by conducting flow table test. It was observed that, flow values decrease with increase in percentage of replacement of cement by SCBA. The impact of bagasse ash content as a partial replacement of cement has been investigated on physical and mechanical properties of hardened mortar including compressive strength, split tensile strength and flexural strength. For the compressive strength three sizes of cubes and 150x300 mm cylinder were used. The split tensile strength was determined using the cylindrical specimen of size 150x300mm and the flexural strength of mortar was determined using the specimen of size 40x40x160 mm. Mortar mix of MM3 grade with compressive strength between 3 and 5 MPa were produced.
Development of Local Bagasse Ash as Pozzolanic Material for Use in Concrete
Pakistan Journal of Engineering and Applied Sciences, 2016
Concrete is one of the extensively used materials in construction industry. General construction uses ordinary Portland cement, however for specialized projects specific properties of concrete are tailored using different pozzolans. Sugarcane bagasse ash is abundantly available in Pakistan as being obtained from sugar mills which uses sugarcane bagasse as fuel. This research is focused to determine the maximum pozzolanic activity of sugarcane bagasse ash. Raw bagasse ash was calcined at temperatures of 500, 600 and 700 degree Celsius for 1, 2 and 3 hours heating duration. ASTM C 618 and C 311 were used to determine the suitability of sugarcane bagasse ash for its pozzolanic activity. It was found that maximum pozzolanic activity is achieved at a temperature of 500 degree Celsius for 1 hour heating duration and same was verified by X-ray diffraction analysis of calcined sugarcane bagasse ash
Sugar cane bagasse ash as a pozzolanic material
This study aimed to verify the SCBA's potential use as a partial replacement of Portland cement. Therefore, the experiment was divided in two stages; in the first, mineralogical and chemical analyses were performed with two samples of ash, in-natura and calcined at a temperature of 600°C for 6h. After these analyzes, it was observed that the calcined ash presented a greater tendency of material in the amorphous state, which possibly made the material the most reactive. For this reason, only the calcined ash was ground for 1 and 2h. These samples were further studied in order to check the pozzolanic activity index and the compressive strength, evaluating the replacement of 10, 20 and 30% Portland cement by ground SCBA. The results showed an increase in the pozzolanic activity index only in samples of calcined and ground SCBA, showing that calcined ash must undergo a grinding process to present pozzolanic activity.
Effects of Sugarcane's Bagasse Ash Additive on Portland Cement Properties
International Journal of Sustainable Development Research, 2017
The utilization of agricultural waste produced by different industrial processes has attracted the researchers attention. In this paper the influence of sugarcane bagasse ash (SCBA) as an additive in enhancing the properties of the portland cement was investigated. Thus, the ordinary Portland cement (OPC) was partially modified by adding fine sugarcane bagasse ash. The bagasse ash was sieved through No. 600 sieve, then the concrete and mortar mixtures samples were modified by adding 0%, 5%, 10%, 15%, and 20% of BA respectively. The physical characteristics and chemical composition of the bagasse ash and cement mixtures analyzed and tested in Nile Cement Company). The obtained samples were examined and compared with the ordinary cement. The result revealed that addition of bagasse ash to cement up to 15% has improved the compressive strength of mortar. While the addition of 20% bagasse ash to cement results in decreasing the soundness of the cement and improving its fineness.
Evaluation of bagasse ash as supplementary cementitious material
The utilization of waste materials in concrete manufacture provides a satisfactory solution to some of the environmental concerns and problems associated with waste management. Agro wastes such as rice husk ash, wheat straw ash, hazel nutshell and sugarcane bagasse ash are used as pozzolanic materials for the development of blended cements. Few studies have been reported on the use of bagasse ash (BA) as partial cement replacement material in respect of cement mortars. In this study, the effects of BA content as partial replacement of cement on physical and mechanical properties of hardened concrete are reported. The properties of concrete investigated include compressive strength, splitting tensile strength, water absorption, permeability characteristics, chloride diffusion and resistance to chloride ion penetration. The test results indicate that BA is an effective mineral admixture, with 20% as optimal replacement ratio of cement.
Recent Studies of Sugarcane Bagasse Ash in Concrete and Mortar- A Review
2018
In this article, the explanation and the major description of Sugarcane Bagasse ash (SCBA) have reviewed. This paper investigates the various process involved in the SCBA. This paper provides a historical point of view on the explanation and use of SCBA as a mineral admixture. This paper focuses on the mechanical and durability properties of SCBA in concrete