Reduction of Soil Swelling Potential Using PU Polyurethane Liquid Foam

2021 ◽  
Author(s):  
Ezzat M. Al-Atroush
Keyword(s):  
Swelling Potential ◽  
Liquid Foam

An Overview: to Reduce Swelling Potential of Expansive Soil By Using Polypropylene Material

2018 ◽  
pp. 129-131
Author(s):  
A. A. Musale ◽  
M. A. Mhetre ◽  
A. I. Mukeri ◽  
K. S. Chavan ◽  
R. N. Kawade ◽  
...  
Keyword(s):  
Expansive Soil ◽  
Swelling Potential ◽  
Polypropylene Material

Hydrogel foams from liquid foam templates: Properties and optimisation

2021 ◽  
pp. 102478
Author(s):  
I. Ben Djemaa ◽  
S. Auguste ◽  
W. Drenckhan-Andreatta ◽  
S. Andrieux
Keyword(s):  
Liquid Foam

Closure to “Prediction of Swelling Potential for Compacted Clays”

1963 ◽  
Vol 89 (3) ◽  
pp. 143-146
Author(s):  
H. B. Seed ◽  
Jr. Woodward ◽  
R. Lundgren
Keyword(s):  
Swelling Potential ◽  
Compacted Clays

scholarly journals INVESTIGATION OF SOUND WAVES PROPAGATION PECULIARITIES IN GAS-LIQUID FOAM

1992 ◽  
Vol 02 (C1) ◽  
pp. C1-891-C1-894
Author(s):  
I. I. GOLDFARB ◽  
Z. M. ORENBAKH ◽  
G. A. SHUSHKOV ◽  
I. R. SHREIBER ◽  
F. I. VAFINA
Keyword(s):  
Sound Waves ◽  
Waves Propagation ◽  
Liquid Foam

scholarly journals KAJIAN PERBAIKAN SUBGRADE DARI TANAH EKSPANSIF MENGGUNAKAN SPENT CATALYST RCC 15 DAN ABU BATOK KELAPA SAWIT

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
Totok Hermawan ◽  
Syahril Syahril
Keyword(s):  
Swelling Pressure ◽  
Plasticity Index ◽  
Swelling Potential ◽  
Spent Catalyst

Hasil pengujian pada lapisan Subgrade yang dilakukan di ruas jalan tol Cisumdawu khususnya pada STA 13+500 tergolong pada jenis tanah ekspansif. Kondisi Subgrade tersebut jika tidak segera diperbaiki maka dapat mengakibatkan berbagainya jenis kerusakan pada perkerasannya. Dalam penelitian perbaikan Subgrade yang dilakukan adalah menggunakan metode stabilisasi dengan Abu Batok Kelapa Sawit dan Spent Catalyst RCC 15. Penelitian ini bertujuan untuk mengevaluasi sejauh mana pengaruh penambahan Abu Batok Kelapa Sawit dan Spent Catalyst RCC 15 terhadap kembang susut dan daya dukung sebagai lapisan Subgrade konstruksi perkerasan ruas jalan tol Cisumdawu. Penelitian ini menghasilkan beberapa kesimpulan yaitu (1) Terjadi  penurunan nilai untuk kadar air optimum, Plasticity Index, Swelling Potential dan Swelling Pressure. (2) Terjadi Kenaikan nilai untuk Berat Isi Kering, CBR Unsoaked, CBR Soaked, CBR Peram, Permeabilitas, Ca-dd dan K-dd. (3) Tercapainya campuran bahan stabilisasi yang dapat digunakan sebagai perbaikan Subgrade pada tanah ekspansif untuk standar minimal Subgrade lapisan perkerasan jalan. (4) Belum tercapainya nilai yang optimum pada campuran bahan stabilisasi yang digunakan terhadap perubahan nilai karakteristik Subgrade. (5) Hasil pengujian secara statistik yang dilakukan didapatkan suatu hubungan yang yang berarti secara statistic.

scholarly journals Multifunctional Semi-interpenetrating Superabsorbents from Graft Polymerization of Acrylic Acid on Cellulose in Presence of Fulvic Acid as Potential Slow Release Devices of Soil Nutrients

2016 ◽  
Vol 12 (2) ◽  
pp. 4045-4056 ◽  
Author(s):  
Hisham Essawy
Keyword(s):  
Acrylic Acid ◽  
Soil Nutrients ◽  
Network Structure ◽  
Water Retention ◽  
Graft Polymerization ◽  
Morphological Alteration ◽  
Interpenetrating Network ◽  
Swelling Potential ◽  
Additional Advantage ◽  
Release Devices

Grafting polymerization of acrylic acid (AA) was undertaken onto cellulose powder (Cell) in presence of potassium fulvate (KF) to produce semi-interpenetrating network structures. The grafting efficiency (GE) and grafting yield (GY) were studied as and indicated that the grafting process was not influenced in presence of KF. KF was expected to be incorporated into the cellulose backbone in the same course of the graft polymerization via polycondensation with groups from cellulose and monomer. The simultaneous graft polymerization of acrylic acid and polycondensation processes of all components allows formation of a more chemically active semi-interpenetrating network structure. Successful incorporation of KF to the network structure was predicted from fourier transform infrared spectroscopy (FTIR) while enhanced Cu2+ uptake confirmed the better chemical activity with respect to the same network prepared in absence of KF. Furthermore, the wide variation of the swelling potential as a function of the pH further corroborates the insertion of KF to the network structure. Imaging with scanning electron microscopy (SEM) indicated morphological alteration on the surface which might be related to the KF anchoring to the cellulose backbone. The developed superabsorbents showed increment in the water absorption both in distilled water and salted solutions as well. The newly developed superabsorbent was applied as a support for soil nutrients and their controlled release in soil was studied. The results proved efficiency of the superabsorbent to warrant appropriate release of the nutrients according to the time regulations set by European Committee of Normalization (ECN). Improved water retention was also an additional advantage.

scholarly journals The Use of Geogrids in Mitigating Pavement Defects on Roads Built over Expansive Soils

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Richard Shumbusho ◽  
Gurmel S. Ghataora ◽  
Michael P.N. Burrow ◽  
Digne R. Rwabuhungu
Keyword(s):  
Seasonal Changes ◽  
Expansive Soils ◽  
Expansive Soil ◽  
Real Field ◽  
Experimental Program ◽  
Swelling Potential ◽  
Swelling Behaviour ◽  
Wetting And Drying ◽  
Potential Benefits

This study was conducted to investigate the potential benefits of using geogrids in mitigating pavement defects notably roughness and longitudinal cracking on pavements built over expansive soils. The seasonal changes of expansive soils (periodic wetting and drying) cause detrimental effects on the overlying road pavements. Such detrimental behavior of expansive soils was simulated in a controlled laboratory environment through allowing cyclic wetting and drying of an expansive soil underlying a pavement section. The shrink/swell effects of the expansive soil subgrade were examined through monitoring its change in moisture, and measuring deformation of overlying pavement section. The experimental study suggested that a geogrid layer in a reinforced pavement section can reduce surface differential shrinking and swelling deformation resulting from underlying expansive soils by a factor of 2 and 3 respectively in comparison to unreinforced section. Given that an oedometer test which is typically used to predict swelling potential of expansive soils is known to overpredict in-situ soil swell, experimental program also investigated quantitatively the extent to which the oedometer can overestimate swelling behaviour of the real-field scenarios. It was found that oedometer percent swell can overpredict in-situ swelling behaviour of the expansive soil by a factor ranging between 2 and 10 depending upon the period over which the in-situ expansive soil has been in contact with water.

Rheology of liquid foam

2005 ◽  
Vol 17 (41) ◽  
pp. R1041-R1069 ◽  
Author(s):  
R Höhler ◽  
S Cohen-Addad
Keyword(s):  
Liquid Foam

Stabilization of clayey subgrade with waste pumice for road infrastructure

2015 ◽  
Vol 22 (5) ◽  
Author(s):  
Ömür Çimen ◽  
Mehmet Saltan ◽  
S. Nilay Keskin
Keyword(s):  
Mechanical Properties ◽  
Road Construction ◽  
High Plasticity ◽  
Test Results ◽  
Index Properties ◽  
Compression Tests ◽  
Unconfined Compression ◽  
Swelling Potential ◽  
Project Costs ◽  
High Plasticity Clay

AbstractHigh-plasticity clayey subgrade, which is unsuitable for road construction, may sometimes occur along highway routes. In such cases, engineers need to change the route of a highway project, resulting in an increase in road length and project costs. In this study, waste pumice was examined for stabilization of high-plasticity clayey subgrade, which is inappropriate for road construction. For this purpose, the physical and index properties of clay and pumice were determined. Then, the pumice was mixed with high plasticity clay at different ratios by weight. By performing standard Proctor compaction tests on the mixtures, the effects of adding pumice on compaction were also studied. Unconfined compression tests and California bearing ratio (CBR) tests were performed on all pumice-clay mixtures, and the test results and the CBR ratios were compared for each sample, respectively. The results showed that pumice stabilization improved the mechanical properties and reduced the swelling potential of high plasticity clayey subgrade.

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