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Natural river sand was used as a fine aggregate (F.A) which had a fineness modulus of 2.7, and crushed stone with a maximum of 25 mm size was utilized as a coarse aggregate (C.A). Both fine and ...
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The study focuses on the characteristics of wood ash/ saw dust and the properties incurred due to replacement of cement with wood ash. The objectives are: 1. To study the mechanical strength (compressive and tensile strength) of concrete along with the wood ash as partial replacement for cement. 2. To study the carbonation and drying shrinkage. 3.
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The use of waste material as a partial replacement has become popular in concrete mixture studies. Many research has utilized waste materials like cement, fine aggregate, coarse aggregate, and reinforcing materials substitute. The current paper focuses on some of the waste elements that are utilized in a concrete mortar (use in roof tile) as a partial replacement for fine aggregates such as ...
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fine and coarse aggregates used were (2011) investigated the implementation This study examined the use of obtained from a local supplier in Og- of wood waste ash as a partial cement saw dust ash as partial replacement bomoso, Nigeria. replacement material in the produc- for ordinary Portland cement in con- tion of structural grade concrete and ...
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research the alternative way of reducing sawdust is to use it as replacement in fine aggregate.In considering sawdust as fine aggregate, the properties of the sawdust must be put into test to determine whether sawdust can perform same functions as other conventional materials.[14]: [7]: [13] states that sawdust damage and prolonged
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Coarse and fine Aggregates The fine aggregate used was locally available m-sand without any organic impurities and conforming to IS: 383 - 1970 [Methods of physical tests for hydraulic cement]. The coarse aggregate chosen for SCC was typically round in shape, well graded and smaller in maximum size than that used for conventional concrete.
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The paper examined the types of sawdust suitable as partial replacements of fine aggregate in concrete. Two different types of sawdust sourced from Afara and Doka wood species were used for the experiment. DoE Method was used to design and produce.
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In this paper saw dust ash was used as prime material for the improvement of the compressive strength of concrete at age of 7 and 28 days of curing period [7-13] . 2.M ATERIALS USED Saw Dust Saw Dust used in this study was collected from local mi lls. Specific gravity of sawdust is 2.12 Table: 1 Chemical properties of saw dust
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Only 10% substitution is allowed at maximum and 5% substitution is adequate to enjoy maximum benefit of strength gain. 4.Use of saw dust ash in concrete can prove to be economical as it is non useful waste and free of cost. 5.Use of saw dust ash in concrete will eradicate the disposal problem of saw dust and prove to be environment friendly thus...
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compared to existing SCC or standard concrete mix [2]. Partial sawdust replacement reduces the concrete making cost. As the amount of sawdust decreased, water absorption improved. To achieve replace sawdust with fine aggregate by 10% [3]. Triple blend SCC enhances its flowability properties.
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More than 1500 concrete batching plants operating worldwide provide an enormous feedback for the improvement. Recently this large experience has been transformed into a simple, comprehensive and extremely sensitive electromechanical structure - a MECAS Automation System.
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Civil engineering; Porous concrete; Coal fly ash; Fine sawdust; Industrial waste; Partial cement replacement; Internal curing.
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research carried out by Olutoge (2010), he investigated the suitability of sawdust and palm kernel shells as replacement for fine and coarse aggregates in the production of reinforced concrete slabs. He concluded that 25% sawdust and palm kernel substitution reduced the cost of concrete production by 7.45%.
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durability of concrete with partial replacement of fine aggregate by pond ash .Pond ash obtained as the by-product of thermal industry was introduced into the concrete mix at ... F .A. Oluto [4] studied the behaviour of concrete slab incorporating sawdust and palm kernel as replacement material for fine and coarse aggregate respectively .The ...
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The mix ratio of 1: 1.5: 3 and water-binder ratio of 0.4 was used for all the mix proportions. The Saw Dust Ash (SDA) was 5% of the total binder content and Laterited as partial replacement of the fine aggregate at 25% of the total fine aggregate content. A total of 108 concrete cubes (150 X 150 x 150mm)
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Chips form The powder form sawdust is used for replacement of fine aggregate with some treatment; this is named as Dry Sawdust. The chips form or skin form of sawdust is used to replacement for cement after a burning process this form of sawdust is named as Sawdust Ash. 1.1.1.SAWDUST MORTAR
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replacement in mortar and concrete works (Elinwa and Mahmood, 2002; Elinwa and Ejeh, 2004). It has also been used ... cement, sawdust ash, fine aggregate, coarse aggregate and water. The cement used in this work is Dangote brand of ordinary Portland cement. It conforms to the requirement of BS 12 (1978).
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saw-dust as a partial replacement of Fine Aggregate in the properties of concrete mix. Saw dust also known as wood dust is a by-product or waste product of wood working operations such as sawing, milling, planing, routing, drilling and sanding. The purpose of this thesis is to investigate how powder as a replacement the cement and saw ...
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Aggregate occupy 70 to 80% of the volume of the concrete. Coarse aggregate is the important constituent in concrete. The granite used for this research work was 12mm size. The sieve analysis of combined aggregates confirms to the specifications of IS 383: 1970 for graded aggregates. Specific gravity =2.64 Fineness Modulus = 6.816 b. Fine Aggregate
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concrete cylindrical moulds, measuring tape, Sieve stack (British Standard) with receiver. Test Method A. sieve analysis of sand, gravel, cement and gmelina sawdust ash: In accordance with [13], river sand of size below 4.75mm was used as fine aggregate; also coarse aggregate of size below 40mm was used according to the recommended standard.
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compacting concrete containing saw-dust ash. Elinwa and Mahmoodb (2002) considered ash from timber waste as cement replacement material. The pres-ent study considered both fresh and hardened properties of normal concrete in which saw dust ash is incorporated at the point of mix. The study was performed in Nigeria which is in South-East Europe. The
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Partial Replacement of Cement by Saw Dust Ash . the fine aggregate component of concrete . Study of Compressive Strength of Concrete by Partially. production of concrete, fine aggregate place a vital role. In Warangal district resources material of fine aggregate of natural sand is less available.
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A percentage replacement of at least 14% canpotentially be used in producing structural concrete. Sawdust can potentially replace 16% of sand in theproduction of structural lightweight concrete. Since sawdust may be obtained at virtually no cost,the cost of concrete can potentially be reduced byreplacing sand with sawdust in concrete.
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The compressive strength decreased with increasing Sawdust Ash as replacement. The compressive strength of concrete with Sawdust Ash was lower at early stages but improves significantly ... Initially coarse aggregate, fine aggregate, cement, fly ash, and GGBS were dry mixed for three minutes in the mixer. After dry mixing, alkaline activator ...
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This study investigates the use of Saw Dust Ash (SDA) as partial replacement for ordinary Portland cement (OPC) in sandcrete blocks. Some units of sandcrete hollow blocks were produced by partially replacing the cement content with 5% to 25% by weight of SDA, using vibrating block moulding machine. Sandcrete blocks without SDA serve as the control.
Get priceAlkali activated concretes have emerged as a prospective alternative to conventional concrete wherein diverse waste materials have been converted as valuable spin-offs. This paper presents a wide experimental study on the sustainability of employing waste sawdust as a fine/coarse aggregate replaceme .
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Sawdust replacement by 20% Cement = 4.184 kg Water = 1.883 liters Coarse aggregate = 11.1396 kg Fine aggregate = 7.324 kg Volume of fine aggregate = 7.324÷ (2.65×1000) = 2.72×10-3 m320% of fine aggregate is replaced:- Volume of saw dust =0.20×2.72×10 = 0.544×103 m3 Mass of saw dust = 0.544× 10-3×0.37×103 = 201.2 gm Mass of fine aggregate use...
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Jun 1, 2022Sawdust is a waste product of woodworking operations (wood and furniture) such as sawing, milling, planning, routing, drilling, and sanding [44]. The sawdust was obtained from commercial sawmills in Sunyani Municipality and burnt in an empty metal barrel to produce the powder/ash as shown in Figs. 1 (a) and 1 (b).
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The fine aggregates (sharp sand) with maximum ... sandcrete blocks with Saw Dust Ash replacement of 0%, 5%, 10%, 15%, 20% and 25% are 1.60, 1.90, 2.44, 2.53, ... Strength characteristics of ...
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The research investigated the use of sawdust as partial replacement in fine aggregate for production of sandcrete hollow blocks in Nigeria. Due to high cost of conventional construction materials in the country, the research reduced the costof those conventional materials. Sawdust as an industrial waste is available at any ...
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It is also used to analyze the effect of sawdust concrete in terms of workability, adhesion of aggregates and etc. After preparing the concrete block, the difference in weight between the original...
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The concrete mix ratio of 1:2:4. was prepared using water/cement of 0.65 with 0%, 25%, 50%, 75% and 100% sawdust as partial replacement for fine sand. The coefficient of uniformity and coefficient of curvature of the sand used in this study was 1.049 and 1.324 respectively which shows that the sand is a well graded sand as it does not exceed the range of 1 and 3 for ; and maximum of 6 for ...
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Moreover, a better performance of mortar was observed by Corinaldesi et al. (2016) when using fine sawdust particle rather than using coarse size. On the other hand, the addition of coal fly ash in the concrete mix is reported to increase the compressive strength of concrete (Thomas, 2007; Bremseth, 2010; Mallisa and Turuallo, 2017). When added ...
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Green concrete uses local and recycled materials like fly ash, GGBS (Ground Granulated Blast Furnace Slag, artificial aggregates etc. in the concrete. It reduces CO 2. Green concrete reduces environmental pollution. It has good thermal resistance and acid resistance. Green concrete reduces the consumption of cement overall.
Get priceMar 31, 2022This investigation used sawdust to substitute river sand in the concrete mix proportions of 5%, 10%, 15%, and 20% by weight. The impact of compressive strength, workability, and density was investigated by changing the amount of sand replacement with sawdust. Concrete cubes of 100 mm × 100 mm × 100 mm were produced for compressive strength tests.
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Sometimes saw dust is used as a light-weight aggregate in flooring and in the manufacture of precast products. A few difficulties have been experienced for its wide-spread use. Saw dust affect adversely the setting and hardening of Portland cement owing to the content of tannins and soluble carbohydrates.
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6. Like all light weight aggregate, concrete made from shell may be useful for thermal insulation, in the making of pre-stressed concrete (Anthony, 2000). Sawdust as an aggregate in concrete: Sawdust can be used as alternative substitute for fine aggregate in concrete production. Sawdust should be washed and cleaned
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River sand as a fine aggregate with fineness modulus and specific gravity of 2.43 and 2.64, respectively, were used throughout the study. Locally obtained crushed limestone has been used as a coarse aggregate with a maximum of 20 mm and a fineness modulus of 7.72, in compliance with grading standards for the production of concrete.
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This research concludes that the studied recycled concrete aggregates might be used as replacements for coarse aggregate in asphalt mixtures since their chemical properties do not affect the overall chemical stability of the asphalt mixture. This Special Issue is completed by a review article by Lavagna et al. . This analytical mini-review ...
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3. Eggshell as a Fine Aggregate in Concrete for Sustainable Construction by S. A. Raji, A. T. , 2015 [3] This experiment has investigated the use of egg shell at 100% replacement level as a fine aggregate in concrete. This results a reduction in compressive strength of the concrete but still falls within limits of light weight concrete.
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