چکیده:
Background. Beach soccer is one of the most well-known international sports in the world. The laws of the game
were introduced by some associations and today they are covered by FIFA. There are also certain rules for the
selection of beach soccer sand, but the specifications are too simple and rough. Thus, a wide range of sand types falls
in the acceptable range of FIFA. Objectives. In this study, an investigation is conducted to identify the effective
parameters of beach soccer sand that affect the acceptability and quality of sand. The aim of this study is to
determine which type of sand is more in accordance with the expectations of beach soccer players. Methods. This
study is based on the results of a survey on 10 players of the national beach soccer team of Iran. The questionnaire
includes questions about different aspects of sand quality at a number of beach soccer grounds. The sand samples are
consequently compared by considering their gradations and particle shapes. A number of recommendations are
presented in order to select high-quality sand for the purpose of beach soccer ground coverage. Results. The results
are examined using numerical simulations. Finally, after conducting several tests and survey and gathering regional
data, a simple and reliable method for ranking sand types used in beach soccer ground coverage is presented. The
method can accurately predict the score of each sand sample by using the input data of gradation test, roundness test,
and regional data. The sand types are scored according to the level of the match. Conclusion. In this manner, the
grounds of beach soccer can be standardized using the presented ranking method.
خلاصه ماشینی:
"com Received: 01/11/2016 Accepted: 13/06/2017 Effect of Gradation and Particle Shape on Sand Properties as Coverage of Beach Soccer Ground - Details of a Patent 1Seyed Ramin Haghighizade, 2Morteza Jiryaei Sharahi*, 1Seyed Mahmood Mirhosseini, 2Maryam Mousavi 1Civil Engineering Department, Arak Branch, Islamic Azad University, Arak, Iran.
Finally, after conducting several tests and survey and gathering regional data, a simple and reliable method for ranking sand types used in beach soccer ground coverage is presented.
This study is conducted to investigate the effect of the gradation and shape of sand particles on the quality and acceptability of sand as beach soccer ground coverage.
The results of sphericity test A clear relationship is not observed between the results of the roundness and sphericity tests and the quality of sand samples used as beach soccer ground coverage, but particle shape parameters is used indirectly in the following steps for the purpose of sand ranking.
All tests mentioned in the previous sections are conducted to investigate the effective parameters for the selection of an appropriate sand type to cover a beach soccer ground.
Selected parameters for sand ranking and roundness test results and the average air formula moisture can be used to simply and effectively predict the quality of sand to be used for the coverage of beach soccer grounds.
o In this study, after conducting several tests, surveys, and regional data collection, a simple and reliable method for ranking the sand types used for beach soccer ground coverage is presented."