Pozzolanic activity and filler effect of sugar cane bagasse ash in Portland cement and lime mortars (original) (raw)
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Utilization of Sugar Mill Waste Ash as Pozzolanic Material in Structural Mortar
Minerals
Bagasse is produced as a waste in the sugar production process, which is used as fuel to stoke boilers in the sugar mills. The concluding product of this burning is residual sugarcane bagasse ash (BA), which is normally dumped or used as low-quality fertilizer. The ash for this study was collected from a reputed sugar mill located in the northern region of Bangladesh. Type I Portland cement (PC) was partially replaced with that finely ground bagasse ash without any pretreatment. The ground BA was used as a replacement for Portland cement at 5, 10, 15, 20, 25 and 30% of BA, respectively, in structural mortar. In addition, chemical characterization, specific gravity, X-ray diffraction (XRD), scanning electron microscopy (SEM), setting time, a strength activity index, compressive strength, water absorption, density and durability in a chloride environment of mortar were determined. The strength activity index result indicates that the used BA has the pozzolanic properties to be used as...
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.
Construction and Building Materials, 2015
Portland cement is one of the most used material in the world. Due the environmental problems related to its use, such as CO 2 emission and use of non-renewable raw materials, new materials are being researched. In this context, an alternative is the use of pozzolanic materials replacing partially the Portland cement. Wastes from agroindustry are being studied as pozzolanic materials, and this paper try to analyze the potential use of the sugar cane straw ash (SCSA) as replacement product. This material was obtained from the autocombustion of sugar cane straw. The aim of this paper is to assess SCSA reactivity and the mechanical properties of SCSA containing systems. Characterization of SCSA (XRD, chemical composition, particle size and microscopy) and reactivity studies on hydrated lime/SCSA and Portland cement/SCSA pastes through infrared spectroscopy, thermogravimetry and microscopy tests demonstrated the high pozzolanic activity point of view. This reactivity let to reach good mechanical properties for mortars in which 15-30% of cement was replaced by SCSA. Compressive strength of mortars containing SCSA reached similar values than those found for control mortars in the 3-90 days curing period. The results from microstructural and mechanical properties showed that SCSA can replace partially the cement Portland.
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.
Characteristic evaluation of concrete containing sugarcane bagasse ash as pozzolanic admixture
Research on Engineering Structures and Materials
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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
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.
Sugarcane Bagasse Ash as a Partial-Portland-Cementreplacement Material
Dyna, 2011
This investigation is focused on the evaluation of the effects of the partial replacement of Portland cement by sugar cane bagasse ash (CBC) in mortars. The main objective wasto find a suitable destination for an agricultural residue generated in an increasing amount in Brazil, as the use of CBC as a mineral admixture in mortars and concretes, contributes to decrease the environmental impact of these materials related to cement production. Experimental techniques were applied both for the CBC characterization and for the evaluation of its use as a mineral admixture in mortars, based on mechanical and physical tests. The results from tests with mortars indicated the viability of the partial substitution of cement by up to 20% of the CBC considered.
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.