Adsorbed complex and laboratory geotechnics of Quarry Dust (QD) stabilized lateritic soils

2018 ◽  
Vol 10 ◽  
pp. 355-363 ◽  
Author(s):  
Bui Van Duc ◽  
Onyelowe Kennedy
Keyword(s):  
Lateritic Soils ◽  
Adsorbed Complex ◽  
Quarry Dust

An Experimental Study on Compaction Behavior Of Lateritic Soils Treated with Quarry Dust Based Geopolymer Cement

2021 ◽  
Vol 47 (1) ◽  
pp. 104-119
Author(s):  
Kennedy Chibuzor Onyelowe ◽  
Duc Bui Van ◽  
Mohammed Oludare Idrees ◽  
Michael E. Onyia ◽  
Lam Dao-Phuc ◽  
...  
Keyword(s):  
Soil Stabilization ◽  
Construction Material ◽  
Road Construction ◽  
Engineering Properties ◽  
Dry Density ◽  
Lateritic Soils ◽  
Granulated Blast Furnace Slag ◽  
Geopolymer Cement ◽  
Strict Requirement ◽  
Quarry Dust

Due to the scarcity of well-graded gravel materials, lateritic soils are widely used for road construction in tropic areas. However, lateritic soils often do not meet the strict requirement for subgrade and need to be improved to be used as construction material. Among several approaches used to enhance the engineering properties of lateritic soils, the use of industrial waste materials, such as fly ash, granulated blast furnace slag, is of particular interest to the construction industry as a potential replacement material for Portland cement in soil stabilization. Meanwhile, some effort has been made to study the use of quarry dust in stabilizing lateritic soils. The present work aims at assessing the compaction characteristics of three different types of lateritic soils, treated with quarry dust based geopolymer cement. A systematic study by varying the proportion of geopolymer cement was carried out. Test results show that the soil dry density substantially increased while the corresponding optimal moisture content decreased with the amount of geopolymer cement under varying compactive effort.

scholarly journals The use of red earth, lateritic soils and quarry dust as an alternative building material in sandcrete block

2020 ◽  
Vol 7 ◽  
pp. e00263
Author(s):  
Banjo A. Akinyemi ◽  
Alhassan Elijah ◽  
Aladegboye Oluwasegun ◽  
Denen T. Akpenpuun ◽  
Owolaja Glory
Keyword(s):  
Building Material ◽  
Lateritic Soils ◽  
Red Earth ◽  
Quarry Dust

scholarly journals Evaluation of index and compaction properties of lateritic soils treated with quarry dust based geopolymer cement for subgrade purpose

2020 ◽  
Vol 72 (1) ◽  
pp. 12-15
Author(s):  
Kennedy Chibuzor Onyelowe ◽  
Duc Bui Van ◽  
Lam Dao-Phuc ◽  
Favour Onyelowe ◽  
Chidozie Ikpa ◽  
...  
Keyword(s):  
Lateritic Soils ◽  
Geopolymer Cement ◽  
Compaction Properties ◽  
Quarry Dust

Determination of trace amounts of lead by adsorptive cathodic stripping voltammetry with L-3-(3,4-Dihydroxyphenyl)alanine

2009 ◽  
Vol 74 (4) ◽  
pp. 599-610 ◽  
Author(s):  
Mohammad Bagher Gholivand ◽  
Alireza Pourhossein ◽  
Mohsen Shahlaei
Keyword(s):  
Lead Concentration ◽  
Stripping Voltammetry ◽  
Optimum Conditions ◽  
Lead In Blood ◽  
Accumulation Time ◽  
Cathodic Stripping Voltammetry ◽  
Voltammetric Measurement ◽  
Adsorbed Complex ◽  
Reduction Current

A sensitive and selective procedure is presented for the voltammetric determination of lead. The procedure involves an adsorptive accumulation of lead L-3-(3,4-dihydroxyphenyl)alanine (LDOPA) on a hanging mercury drop electrode, followed by a stripping voltammetric measurement of reduction current of an adsorbed complex at –0.15 V (vs Ag|AgCl). Optimum conditions for lead analysis include pH 8.5, 80 μM LDOPA and accumulation potential –0.15 V (vs Ag|AgCl). The peak currents are proportional to the lead concentration 1–300 nmol l–1 with a detection limit of 0.6 nmol l–1 and accumulation time 60 s. The method was used for the determination of lead in blood, dry tea and also in waters.

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