پديد آورندگان :
ﻓﯿﻀﯽ، زﻫﺮا داﻧﺸﮕﺎه ﮐﺎﺷﺎن - داﻧﺸﮑﺪه ﻋﻠﻮم زﻣﯿﻦ و ﻣﻨﺎﺑﻊ ﻃﺒﯿﻌﯽ، ﮐﺎﺷﺎن، اﯾﺮان , رﻧﺠﺒﺮ ﻓﺮدوﺋﯽ، اﺑﻮاﻟﻔﻀﻞ داﻧﺸﮕﺎه ﮐﺎﺷﺎن - داﻧﺸﮑﺪه ﻋﻠﻮم زﻣﯿﻦ و ﻣﻨﺎﺑﻊ ﻃﺒﯿﻌﯽ، ﮐﺎﺷﺎن، اﯾﺮان , ﺷﺎﮐﺮي، ﻋﻠﯿﺮﺿﺎ داﻧﺸﮕﺎه ﺗﻬﺮان - داﻧﺸﮑﺪه ﺷﯿﻤﯽ، ﺗﻬﺮان، اﯾﺮان
كليدواژه :
ﻓﺮﺳﺎﯾﺶ ﺑﺎدي , ﻣﻘﺎوﻣﺖ و ﻣﺎﻟﭻ , اﮐﺮﯾﻠﯿﮏ اﺳﯿﺪ , ﭘﻠﯿﻤﺮ , اﮐﺮﯾﻞ آﻣﯿﺪ
چكيده فارسي :
ﻓﺮﺳﺎﯾﺶ ﺑﺎدي و ﻫﺠﻮم ﻣﺎﺳﻪ ﻫﺎي روان از ﺷﺎﺧﺼﻪ ﻫﺎي وﻗﻮع ﭘﺪﯾﺪۀ ﺑﯿﺎﺑﺎن زاﯾﯽ و ﺗﻬﺪﯾﺪ ﺟﺪي ﺑﺮاي ﺳﺎﮐﻨﺎن ﻣﻨﺎﻃﻖ ﺧﺸﮏ ﻣﺤﺴﻮب ﻣﯽ ﺷﻮد. اﻣﺮوزه اﺳﺘﻔﺎده از ﻣﺎﻟﭻ ﺑﻪ ﻋﻨﻮان ﻣﺎدۀ ﺗﺜﺒﯿﺖ ﮐﻨﻨﺪۀ ﻣﺎﺳﻪ ﻫﺎي روان و ﮐﻨﺘﺮل ﮐﻨﻨﺪۀ ﻓﺮﺳﺎﯾﺶ ﺑﺎدي ﻣﻮرد ﺗﻮﺟﻪ ﻗﺮار ﮔﺮﻓﺘﻪ اﺳـﺖ. ﻫﺪف از اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﺑﺮرﺳﯽ اﺛﺮ ﻣﺤﻠﻮل ﭘﻠﯿﻤﺮي اﮐﺮﯾﻠﯿﮏ اﺳﯿﺪ ﮐﻮ اﮐﺮﯾﻞ آﻣﯿﺪ ﺑﻪ ﻋﻨﻮان ﺗﺜﺒﯿﺖ ﮐﻨﻨـﺪ ۀ ﻣﺎﺳـﻪ ﺑـﺎدي اﺳـﺖ. ﺑـﺮاي اﻧﺠـﺎم آزﻣﺎﯾﺶ از ﻣﺎﺳﻪ ﺑﺎدي ﮐﻮﯾﺮ ﺳﯿﺎزﮔﻪ اﺑﻮزﯾﺪآﺑﺎد و ﺑﻪ ﻣﻨﻈﻮر آﻣﺎده ﺳﺎزي ﺑﺴﺘﺮ ﺗﯿﻤﺎرﻫﺎ در ﻣﺤﯿﻂ آزﻣﺎﯾﺸﮕﺎه از ﺳﯿﻨﯽ ﻫﺎي ﻓﻠـﺰي ﺑـﺎ اﺑﻌـﺎد 2×30×100 ﺳﺎﻧﺘﯽ ﻣﺘﺮ اﺳﺘﻔﺎده ﺷﺪ. ﻣﺤﻠﻮل ﭘﻠﯿﻤﺮي ﺗﻬﯿﻪ ﺷﺪه در ﺳﻪ ﺳﻄﺢ 1 ،0/5 و 2% و ﺑﻪ ﻣﻘﺪار 1 ﻟﯿﺘﺮ ﺑﺮ ﻣﺘﺮﻣﺮﺑـﻊ ﺑـﺎ اﺳـﺘﻔﺎده از ﭘﯿﺴﺘﻮﻟﮥ 2/5 ﻟﯿﺘﺮي ﺑﺮ روي ﻧﻤﻮﻧﻪ ﻫﺎ اﺳﭙﺮي ﮔﺮدﯾﺪ. اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﺑﻪ ﺻﻮرت ﻃﺮح ﮐﺎملاﺗﺼﺎدﻓﯽ و ﺑﺎ ﺳـﻪ ﺗﮑـﺮار اﻧﺠـﺎم ﺷـﺪ . ﺳـﺮﻋﺖ آﺳﺘﺎﻧﮥ ﻓﺮﺳﺎﯾﺶ ﺑﺎدي ﺑﺎ اﺳﺘﻔﺎده از دﺳﺘﮕﺎه ﺗﻮﻧﻞ ﺑﺎدي ﺗﻌﯿﯿﻦ ﺷﺪ. ﺑﻪ ﻣﻨﻈﻮر ﺑﺮرﺳﯽ ﺗﺄﺛﯿﺮ ﻏﻠﻈﺖ ﻣﺤﻠﻮل ﭘﻠﯿﻤﺮي، ﭘﺎراﻣﺘﺮﻫﺎي ﻣﻘﺎوﻣـﺖ ﻓﺸﺎري، ﺳﺎﯾﺸﯽ، ﺿﺮﺑﻪ اي، ﺑﺮﺷﯽ و ﺿﺨﺎﻣﺖ ﺳﻠﻪ ﻫﺎي ﺗﺸﮑﯿﻞ ﺷﺪه ﻣﻮرد اﻧﺪازه ﮔﯿﺮي ﻗﺮار ﮔﺮﻓـ ﺖ. ﺳـﺮﻋﺖ آﺳـﺘﺎ ﻧﮥ ﻓﺮﺳـﺎﯾﺶ ﺑـﺎدي ﺗﯿﻤﺎر ﺷﺎﻫﺪ ﺑﺮاﺑﺮ m/s 5 ﺗﻌﯿﯿﻦ ﺷﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﺳﺮﻋﺖ آﺳﺘﺎﻧﮥ ﻓﺮﺳﺎﯾﺶ ﺑﺎدي ﻧﻤﻮﻧـﻪ ﻫـﺎ در ﻫـﺮ ﺳـﻪ ﺳـﻄﺢ اﻓـﺰاﯾﺶ ﯾﺎﻓﺘـﻪ و ﻧﺴﺒﺖ ﺑﻪ ﺑﺎد ﺑﺎ ﺳﺮﻋﺖ m/s 15 ﻣﻘﺎوم اﻧﺪ. ﻫﻤﭽﻨﯿﻦ ﺑﺮ اﺳﺎس ﭘﺎراﻣﺘﺮﻫﺎي اﻧﺪازه ﮔﯿﺮي ﺷـﺪه، ﺗﯿﻤـﺎر 3 )T3=2%( ﺑﻌـﺪ از ﮔﺬﺷـﺖ 30 روز ﺑﻪ ﻋﻨﻮان ﻣﻘﺎوم ﺗﺮﯾﻦ ﺗﯿﻤﺎر ﺗﻌﯿﯿﻦ ﺷﺪ. ﭘﻠﯿﻤﺮ ﺑﻪ ﮐﺎررﻓﺘﻪ در ﺷﺮاﯾﻂ ﻣﺨﺘﻠﻒ ﻣﻮﺟﺐ ﺑﺮوز ﭘﺎﺳﺦ ﻫﺎي ﻣﺘﻨﻮع ﻣﯽ ﺷـﻮد، ﻟـﺬا ﺑـﻪ ﻣﻨﻈـﻮر ﺑﻬﯿﻨﻪ ﻧﻤﻮدن ﺷﺮاﯾﻂ اﺟﺮاﯾﯽ، ﻧﯿﺎزﻣﻨﺪ آزﻣﺎﯾﺶ در ﻣﻘﯿﺎس ﺻﺤﺮاﯾﯽ اﺳﺖ.
چكيده لاتين :
Introduction: More than 40% of the global lands are covered by arid and semi-arid areas, a quarter of which is
covered with dunes, On the hand, wind erosion contributes by approximately 60% to desertification. therefore,
additives or stabilizers are used to control wind erosion and decrease its adverse consequences.
Soil stabilization refers to process whereby a product is added to the soil to improve its properties. stabilizing
agents are typically classified into traditional and non-traditional types.
Hydrogel as a non- traditional stabilizer is a hydrophilic polymer with a three-dimensional network. In recent
years, researchers have developed a series of polymers to be used for various purposes, including the
enhancement of soil properties.
In this regard, this study sought to investigate the applicability and effectiveness of co-acrylamide acrylic
acid hydrogel and determine its optimal concentration as a stabilizer of sand surfaces. To achieve the optimal
concentration, a completely random experiment design was performed in the SPSS environment with three
repetitions for all three concentrations of 0.5, 1, and 2%.
Material and methods: Collected from the Siyazgeh desert in northern Isfahan province, Iran, the samples of
sand dunes used in this study. To investigate the efficiency of the chemical additives used in this study on the
sandy soil’s properties, the polymer was used at three levels (0.5, 1, and 2%) with 3 replications. Accordingly,
metal trays with 100 × 30 × 2 cm dimensions were used to administer the wind erosion test and determine the
threshold of friction velocity. Then, the control tray and the treatments were tested under different wind
velocities (the comparison of the samples’ weight before and after the wind tunnel test showed a weight loss).
Finally, the effect of polymers on anti-wind erosion ability was studied in terms of compressive strength,
abrasion resistance, impact resistance, and crust diameter.
Results:
Determination of wind friction velocity
The effect of three different concentration solutions on the shear strength suggested that all three treatments were
resistant to maximum wind velocity (15 m/s, duration time was 20 min) and they didn’t lose weight. On the other
hand, the control treatment showed 5 m/s for the threshold of friction velocity.
Treatments Resistance
The results of variance analysis showed that there was a significant difference between the treatments (sig <0.05)
and compressive strength in different concentrations, and that increased compared to the control sample. While treatment 3 had the highest resistance (1.61±0.18), no significant difference was found between treatments 1 and
2 (Figure 1).
As shown in Figure 2, treatments 3 and 1 had the highest and lower resistance against the sanding (46.67±5.19
and 8.67±0.96), respectively.
The samples treated with 2% polymer revealed the highest sheer resistance (5±0.56) (Figure 3).
As shown in Figure 4, only treatment 3 was impact resistant.
As shown in Figure 5 most crust diameter revealed in the sample treated with 2% polymer (15.63±1.74).
Conclusion and Discussion: Considering the results of this study, it could be argued that composite
concentration plays a key role in the influence of polymer adsorption on the soil’s particles. on the other hand, it
was found that the sand’s strength and stiffness increased with an increase in the concentration of the polymer
solutions, which could be justified by an increase occurred in the interaction between sand particles and additive.
