It depends on the type of treatment but the texture may change..

As Somanagouda has suggested, you can alter the proportion of sand silt and clay (that affects soil texture), but adding sand silt or clay to an existing soil. This may be by using soil or aggregate materials with particular particle size (or waste by products such as power station fly ash) to influence workability, geotechnical stability, drainage or moisture holding capacity  This is rarely economical except for high value or intensive land use such as construction sites of sports pitches. Careful regulation of soil texture is a critical part of making a good cricket pitch for example. 

Regards

Andrew

Soil texture is more or less a static property affecting almost all other soil properties. Land use capability and soil management practices largely depends on the texture. Quantitatively soil texture is the relative proportion of sand, silt and clay content on weight basis. Therefore, with treatment you may alter the content of sand, silt and clay but not the entire texture.

Soil texture refers to the proportion of sand, silt and clay particles. By and large it can not be changed, but soil management can change the soil aggregates which has bearing on other soil properties.  Or one can change by adding other soil materials, for example adding clayey soil in sandy soils. 

Hai, 

As you know, soil texture is defined by the composition of different soil partials namely, silt, clay and sand. Once you treats the soil sample with chemical or physical treatment, often the some particle may be fragmented or decatntation will happen. For an example, if you use calgone solution  as a treatment ( suppose in hydrometer method), your clay content can be measured vary correctly.   Without calgon treatment, you may not get such level of clay or silt percentage, particularly shows a different soil texture catogory. you can verify this phynomina, By conducting a simple lab test. I have done same. 

so, if soil vertics with >40% clay fraction can not improved by adding sand or other soil ameliorant?

Nurdin I dont think it can cannot be done economically. Because the clay content dominates physical properties such as workability, you would need to make a significant change in clay content to make a difference. You would need close to 1000 t of sand per ha (assuming 30 cm plough layer and c. 1.3 g/cm3 density) to change tour soil from 40%  to 35% clay - but likely not greatly improve workability. With good management practice however soils with vertic properties can be productive without changing properties and are highly regarded in Australia due to high water holding capacity and moderate fertility.

Water related properties can be improved by adding organic amendments 

Colleagues,interesting discussion on possible texture change with certain amendments.As mentioned by Dr.Butler,change of texture of clay soils with sufficient amount of sand may be somewhat difficult (and may not be a big need).But as suggested by Dr.Patil,the amendinding of sandy soils with good amount of clay is possible and is practically happening from several decades in coastal Andhra Pradesh where coastal sands occur in close vicinity to deltaic alluvial soils(texture varying from clay to sandy  clay and silty clay).Farmers, in this area, have been amending sandy soils with the clayey soils over many years.It is possible that texture change may be from sand to loamy sand or sandy loam. In a part of Agricultural College Farm,Bapatla sandy soils are improved for their water holding properties ( with other benefits as well) through this means.

With a heat temperature (>450ºC) such after a mufla lor a postfire, clay and silt could be modified.

https://www.researchgate.net/publication/303501951_Role_of_fly_ash_in_improving_soil_physical_properties_and_yield_of_wheat_Triticum_aestivum?ev=prf_pub

Please see the attachment

Article Role of fly ash in improving soil physical properties and yi...

Under normal condition soil texture is a parameter not responding the environmental changes. However extreme condition can affect it such as excessive soil erosion especially after flood. Very high temperature treatment which is normally does not occur in agricultural soils. Burning stable can sometimes cause extreme temperature which may have influence on texture but its effect may not cause striking changes in short therm. 

Under normal condition, soil texture does not readily change except if natural soil is mixed with soil of a different texture from another location e.g. erosion/sedimentation and earth movement and mixing for engineering purposes.

Nurdin

If you need to improve soil moisture extraction behavior, Eg - changing of permanent wilting point of field capacity, better to use organic amendments than that of thinking about soil texture changing. 

 The vertisols contain 2:1 type expanding clay. This type of soils show extreme swelling and shrinking. Therefore this future can inversly affect plant growing on such soils. Adding sand or other coarse materials canot be an efficient way to prevent swelling-shirnking cycle effect. The best way of ameliorating such soils is to enrich the organic matter content which condition the soil structure for better crop performance.

Soil texture is usually defined as the proportions of sand, silt and clay.  You cannot change soil texture without physically adding or subtracting one of these components.   It is done sometimes.  It is common practice in sandy soils SE Australia to add clay (~1% in surface soil) to improve wetting properties.   Then someone decided that if 1% was good, then 20% would be better and they converted a pure (unproductive) sand to a (highly productive) loam - VERY expensive, but VERY profitable.   This is now done over thousands of sq km.

Chemical additives can be used to change the soil structure (the way the texture components bond together) eg organic glues (polyamides) can be used to make a highly friable (dusty) soil into a more manageable aggregated (cloddy) structure.   Gypsum can be used to cause impermeable, highly dispersable clays to flocculate, and become more permeable.  These are changes in structure - not texture, but they sometimes simulate a change in texture.

Maybe sometimes with knowledge ang technology, we can changed soil texture for modified limiting factor for plant growth