Surrogate models to predict maximum dry unit weight, optimum moisture content and California bearing ratio form grain size distribution curve

2021 ◽  
pp. 1-18
Author(s):  
Saif Alzabeebee ◽  
Safaa A. Mohamad ◽  
Rwayda Kh. S. Al-Hamd
Keyword(s):  
Grain Size ◽  
Moisture Content ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Distribution Curve ◽  
Surrogate Models ◽  
Optimum Moisture Content ◽  
California Bearing Ratio ◽  
Unit Weight ◽  
Dry Unit Weight

scholarly journals The effect of lime Ca(OH)2 to the constant of granulation rate (k) of Sidoarjo mud (LuSi) and its grain size distribution

2019 ◽  
Vol 276 ◽  
pp. 05010
Author(s):  
Dasyri Pasmar ◽  
Noor Endah Mochtar ◽  
Ali Altway
Keyword(s):  
Grain Size ◽  
Moisture Content ◽  
Water Temperature ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Inclination Angle ◽  
Rotation Rate ◽  
Water Resistance ◽  
Dry Weight ◽  
Granulation Process

Sidoarjo mud (LuSi) is very hot and sticky mud-like substance produced by eruption of Kujung, Kalibeng, and Pucangan formations caused by well exploration for gas in Porong, Sidoarjo, East Java, Indonesia. LuSi submerged villages, industrial areas, and rice fields in Porong. The eruption is still taking place so that it needs more area and higher dike surrounded to retain the mud. Therefore, it is very urgent to use LuSi in huge volumes such as for borrowed materials. LuSi grain size and its strength, however, do not meet the borrowed materials requirement. Therefore, the grain size was improved using granulator drum and lime Ca(OH)2 was used to increase its strength. The grain size produced by granulator was affected by length, diameter, and rotation rate of granulator drum, and also by constant of granulation rate ‘k’ that was function of other parameters, inclination angle of granulator drum (S), moisture content (W), and water temperature (T). The results show that lime needed for stabilization is 10% of LuSi dry weight. The “k” is affected by lime where parameters (S) and (W) become smaller and (T) is higher. Lime also produces dryer granular, higher water resistance, and shorter granulation process. Besides, higher water temperature during granulation process is needed to develop bigger grain size for granular stabilized-LuSi.

scholarly journals Effect Of Coir Fibres On The Compaction And Unconfined Compressive Strength Of Bentonite-Lime-Gypsum Mixture

2015 ◽  
Vol 23 (2) ◽  
pp. 1-8 ◽  
Author(s):  
Vidya Tilak B. ◽  
Rakesh Kumar Dutta ◽  
Bijayananda Mohanty
Keyword(s):  
Compressive Strength ◽  
Moisture Content ◽  
Unconfined Compressive Strength ◽  
Fibre Composite ◽  
Optimum Moisture Content ◽  
Unit Weight ◽  
Coir Fiber ◽  
Dry Unit Weight ◽  
Coir Fibre ◽  
Environmental Motivation

Abstract This paper presents the effect of coir fibres on the compaction and unconfined compressive strength of a bentonite-lime-gypsum mixture. The coir fiber content varied from 0.5 to 2 %. The results indicated that the dry unit weight and the optimum moisture content of a bentonite – lime mix increased with the addition of gypsum. The unconfined compressive strength of the bentonite increased with the increase in the lime content up to 8 %. Beyond 8 %, the unconfined compressive strength decreased. The dry unit weight of the reference mix decreased, and the optimum moisture content increased with the addition of coir fibre. The unconfined compressive strength of the bentonite + 8 % lime mix increased up to 4 % with the gypsum. Beyond 4 %, the unconfined compressive strength decreased. The unconfined compressive strength of the reference mix increased with the addition of coir fibre up to a fibre content of 1.5 %. The unconfined compressive strength of the reference mix-coir fibre composite was less in comparison to the reference mix. The unconfined compressive strength of the bentonite increased with the addition of lime and gypsum and with the increase in the curing period. The improvement in the post-peak region was better for the reference mix with reinforced coir fibres as compared to the unreinforced reference mix. The improved post-peak behaviour of the bentonite-lime-gypsum-coir fibre mixture could boost the construction of temporary roads on such problematic soils. Further, its use will also provide an environmental motivation for providing a means of consuming large quantities of coir fibres.

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