Compaction delay and its effect on the geotechnical properties of lime treated semi-arid soils

Moghal, Arif Ali Baig; Ashfaq, Mohammed; Al-Obaid, Ali Abdul Kareem Hamood; Abbas, Mohammad Farid; Al-Mahbashi, Ahmed M.; Shaker, Abdullah A.

doi:10.1080/14680629.2020.1784256

Cited by 23 publications

(10 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of the CBR, the strength improved from 9 to 95% for the kaolin-treated clay, while the CBR of the bentonite-treated clay increased from 56 to 108%. Similar outcomes have been reported elsewhere (Al-taie et al 2016;Eujine et al 2017;Kampala et al 2020;Moghal et al 2020). These studies clearly show the stabilization efficacy attainable with traditional additives, particularly lime stabilization.…”

Section: Introductionsupporting

confidence: 88%

Feasibility of lime and biopolymer treatment for soft clay improvement: a comparative and complementary approach

2022

View full text Add to dashboard Cite

Highway pavement infrastructure projects which involve soil improvement should be executed, ensuring environmental sustainability. In the present study, guar gum (GG) and lime were assessed for the purpose of soft clay stabilization. The experimental program for the soil stabilization employed a two-stage process. The initial stage involves treatment of the soil with various percentages of lime (3, 5, 7, and 9%) and GG (0.6, 1.0, 1.4, and 1.8%), maintaining the same material acquisition cost and considering curing (0, 7, 14, and 28 days) for the unconfined compressive strength (UCS). In the second experimental stage, a complementary approach in which 3% lime was combined with GG at various percentages (0.1, 0.2, and 0.3%) was employed. The tests conducted include UCS, California bearing ratio (CBR), and strength loss resistance (SLR). Results show that the sole use of lime and GG resulted in significant improvement in the UCS, albeit lime was better. While UCS improved with curing time for the lime-stabilized soil, UCS gain for GG occurred only for up to 7 days curing because biodegradation of GG by microbes in the soil ensues on further curing. Lime-GG stabilization resulted in better UCS and CBR improvement with curing than lime stabilization; however, lime stabilization yielded better SLR. The optimum additive content for strength improvement was obtained at 3% lime + 0.3% GG. Microstructural analysis indicated cementation in the stabilized soil. Predictive models for the UCS were developed based on regression methods. Model evaluation revealed that Gaussian process model provided the best UCS prediction.

show abstract

Section: Introductionsupporting

confidence: 88%

Feasibility of lime and biopolymer treatment for soft clay improvement: a comparative and complementary approach

2022

View full text Add to dashboard Cite

show abstract

“…During the storage phase in the bag, cationic and pozzolanic exchange reactions take place, and cementation bonds can take place between the soil particles. During Proctor compaction, these bonds prevent the particles from freely rearranging, which ultimately results in a lower dry density [70,71]. The variations in the optimum dry density and water content due to the addition of binders can be summarized as follows:: (i) MDD is larger for the untreated soil than for the treated soil; (ii) MDD is larger for the soil-cement mixture than for the soil-lime mixture; and (iii) for the same binder content, OWC is smaller for the soil-cement mixture than for the soil-lime mixture.…”

Section: Compaction Characteristicsmentioning

confidence: 99%

Valorisation of dune sand-tuff for Saharan pavement design

Daheur

Demdoum

et al. 2023

Construction and Building Materials

View full text Add to dashboard Cite

“…However, fresh concrete without enough flowability makes casting, pumping, spreading, and molding around steel reinforcement extremely difficult [ 7 , 8 , 9 ]. The product’s low strength and poor durability result from inadequate compaction [ 10 , 11 , 12 , 13 , 14 ]. Inadequate cohesion and surface finishing difficulties might also contribute to problems.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Rheological Properties of Super-Plasticized Concrete Using Modeling Techniques

et al. 2022

View full text Add to dashboard Cite

Interface yield stress (YS) and plastic viscosity (PV) have a significant impact on the pumpability of concrete mixes. This study is based on the application of predictive machine learning (PML) techniques to forecast the rheological properties of fresh concrete. The artificial neural network (NN) and random forest (R-F) PML approaches were introduced to anticipate the PV and YS of concrete. In comparison, the R-F model outperforms the NN model by giving the coefficient of determination (R2) values equal to 0.92 and 0.96 for PV and YS, respectively. In contrast, the model’s legitimacy was also verified by applying statistical checks and a k-fold cross validation approach. The mean absolute error, mean square error, and root mean square error values for R-F models by investigating the YS were noted as 30.36 Pa, 1141.76 Pa, and 33.79 Pa, respectively. Similarly, for the PV, these values were noted as 3.52 Pa·s, 16.48 Pa·s, and 4.06 Pa·s, respectively. However, by comparing these values with the NN’s model, they were found to be higher, which also gives confirmation of R-F’s high precision in terms of predicting the outcomes. A validation approach known as k-fold cross validation was also introduced to authenticate the precision of employed models. Moreover, the influence of the input parameters was also investigated with regard to predictions of PV and YS. The proposed study will be beneficial for the researchers and construction industries in terms of saving time, effort, and cost of a project.

show abstract

Compaction delay and its effect on the geotechnical properties of lime treated semi-arid soils

Cited by 23 publications

References 27 publications

Feasibility of lime and biopolymer treatment for soft clay improvement: a comparative and complementary approach

Feasibility of lime and biopolymer treatment for soft clay improvement: a comparative and complementary approach

Valorisation of dune sand-tuff for Saharan pavement design

Predicting the Rheological Properties of Super-Plasticized Concrete Using Modeling Techniques

Contact Info

Product

Resources

About