Geotechnical Properties of Saw Dust Ash Stabilized Southwestern Nigeria Lateritic Soils

Abstract

This research was carried out with an intention to evaluate the effects of saw dust ash on the geotechnical properties of soil from three locations in Southwestern Nigeria. Tests that were performed on three samples, A, B and C, dealt with consistency limits, specific gravity, compaction, California bearing ratio, unconfined compressive strength and shear strength. These tests were conducted at both non-stabilized and stabilized states by adding 2, 4, 6, 8 and 10% of saw dust ash. The results show that saw dust ash has improved geotechnical properties of the soil samples: maximum dry density increases from 1403 to1456 Kg/m 3 and 1730 to 1785kg/m 3 , optimum moisture content increases from 23.6 to 28.2% and 26.2 to 29.2%, unconfined compressive strength -from 101.4 to 142.14 and 154.97 , shear strength -from 50.92 to 71.07kN/m 2 and 77.49 to 105.99kN/m 2 for samples A and B, respectively. Saw dust ash is therefore found to be an effective stabilizer for lateritic soils.Preface. Road failure is a common problem in Nigeria which is due to low materials application quality in road building. This article has a mission of providing some information to the road building industry that geotechnical properties of the materials they use can be improved by adding a stabilizer such as saw dust ash.

Geotechnical properties of clayey soil stabilized with cement-sawdust ash for highway construction

“…This increase in strength was due to the binder (cement and CSDA) added which had cementitious properties solidifying the soil matrix, thereby increasing the strength values of the clayey soil samples. The increase in the strength values of the stabilized soil samples were similar to those reported in Amu et al (2011) andOgunribido (2012). Figure 5 also showed that the curing of the stabilized soil samples led to an increase in their UCS values.…”

“…Ogunribido (2012) worked on the geotechnical properties of sawdust ash stabilized Southwestern Nigeria lateritic soils. Edeh et al (2013) did an evaluation of the characteristics of lateritic soil stabilized with sawdust ash.…”

Strength benefit of sawdust/wood ash amendment in cement stabilization of an expansive soil

“…Several researchers have worked on the utilization of SDA as a standalone stabilizer as well as in combinations with primary binders like cement and lime. Different investigators have worked on the various geotechnical properties of soils [3][4][5][6][7][8][9][10][11], burnt clay bricks [12] and highway subgrade [13][14] stabilized using SDA. However, Butt et al [4] and Raheem et al [15] indicate SDA to be a pozzolanic material due to its high siliceous content.…”

Potential of snail shell and palm kernel shell powders in improving engineering properties of clay

“…The applicability of these waste by-products has been in various forms. They are used in fiber, ,calcinated ash, shell forms These materials include among others Rice Husk (Oluwatuyi and Ojuri 2017;Phanikumar and Nagaraju 2018), Coconut Shell and Coir (Oyedepo et al, 2015;Sanjay and Rajeev 2015;Ashish Johnson and Krishnankutty 2017), Sugarcane Baggase (Alavez-Ramirez et al, 2012;Abdulkadir et al, 2014;Salim et al, 2014;Danso et al, 2015), Egg Shell (Amu and Salami 2010;Jiksymol et al, 2014;Johns et al, 2017;Karthika et al, 2016;Kavyashree et al, 2016;Okonkwo et al, 2012), Cassava peel (Salau et al, 2012;Bello et al, 2015;Olutaiwo and Adanikin 2016), Groundnut Shell (Nnochiri and Ogundipe 2016;Sujatha et al, 2016), Saw dust (Ogunribido 2012;Ayeni and Ayodele 2015;Butt et al, 2016), Palm Kernel Shell (Edeh et al, 2012;Adetoro and Faluyi 2015;Nnochiri et al, 2017), Fly Ash (Phanikumar and Sharma 2007;Okunade 2010;Phanikumar and Nagaraju 2018), dusts (Sunil et al, 2016;Igwe and Adepehin 2017;Duc and Onyelowe 2018), Bamboo (Amu and Adetuberu 2010;Olofintuyi et al, 2015;Brahmachary and Rokonuzzaman 2018).etc. Few researches have been carried out on using the powder form of the waste except sea shell powder (Mounika, ...…”