انتخاب صفحه

بیست و دومین همایش سالیانه انجمن بین المللی بتن (ACI) – شاخه ایران

مسابقه توپ بولینگ بتنی

آیین نامه مسابقات بین المللی دانشجویی بتن شاخه های منطقه-ای (ACI)
توپ بولینگ بتنی
FRC Bowling Ball Competition
4 و 5 دی ماه 1398
با همکاری وزارت علوم، تحقیقات و فناوری
مجری:

علاقمندان می توانند جهت ثبت نام و کسب اطلاعات بیشتر به پایگاه اینترنتی
www.aciiranchapter.org مراجعه کرده و یا با شماره تلفن 88664151 تماس حاصل نمایند.
دانشجویان علاوه بر سایت های انجمن می توانند تمامی آئین نامه های مسابقات دانشجویی و فرم ثبت نام را از کانال تلگرام انجمن دانلود نمایند.تلگرام انجمن بین المللی بتن ACI

ACI FRC Bowling Ball Competition
Objective

The objective of this competition is to demonstrate the effect of fibers in reinforcing concrete, to gain experience in forming and fabricating a concrete element, and to encourage creativity in engineering design and analysis.

Prizes

First, Second, and Third place entries will each be awarded a certificate of recognition, will be recognized in ACI Iran Chapter’s newsletter if space allows, and will be recognized on ACI’s Iran Chapter website at www.aciiranchapter.org.

Rules

1. The Challenge

a. To design and construct a fiber-reinforced concrete bowling ball to achieve optimal performance under specified failure criteria.

b. To develop a fabrication process that produces a radial uniform density while maximizing volume.

برای دریافت نسخه PDF آیین نامه مسابقه توپ بولینگ بتنی اینجا کلیک کنید.

    مشاهده ادامه آیین نامه

2. Eligibility

The rules of eligibility have been translated to Persian and attached to this document. See attachment A.

Each competition has separate and different requirements and rules of eligibility, so participants in the student competitions should read each document carefully.

3. Materials and Curing

a. The bowling ball must use cementitious materials as binder. The cementitious materials shall be Portland cement meeting ASTM C 150, blended cement meeting ASTM C 595, or expansive cement meeting ASTM C 845. Supplementary cementitious materials such as fly ash and natural pozzolan meeting ASTM C 618, silica fume meeting ASTM C 1240, and slag meeting ASTM C 989 may also be used.

b. Any type of non-metallic aggregate may be used.

c. Chemical admixtures meeting ASTM C 494 or ASTM C 1017 may be used. Glues and similar binders, such as epoxies and other polymers, are not allowed.

d. Curing shall be at atmospheric pressure. The curing temperatures shall not exceed the boiling point of water. Use of a standard moist curing room is permitted.

e. The fiber-reinforced concrete mixture design shall include fibers of maximum 60 mm length and made of steel, glass, synthetic or natural materials as described in ACI 544.1R. The fibers may be used at any dosage rate. No other type of reinforcing is allowed.

f. Filling of honeycombed surfaces after casting is allowed. Fill materials must be selected from the same materials used in the original concrete mixture.

4. Specimen

a. The bowling ball mass shall not exceed 5.5 kg. The bowling ball shall measure the maximum of 250 mm and a minimum of 225 mm diameter.

b. The bowling ball shall be cast or formed monolithically. A ball consisting of smaller precast units bonded together by any means will be disqualified.

c. The bowling ball may be solid (homogeneous) or core filled. If core filled, the maximum density of the filler material shall be no greater than 2400 kg/m3.

d. The hole in the middle axle of the Bowling Ball shall mesure the Minimum of 25 mm in diameter.

e. Modification of entries shall not be permitted once they are submitted for the competition.

f. The Bowling Ball should stand perfectly vertical and it should not tilt or be unbalanced more than 5 degrees.

5. Qualification and Testing Procedures

The competition procedures consist of three steps, all handled by a group of judges appointed by he ACI Iran Chapter Competitions committee.

a. Qualification for further Testing
Each team must have two balls for competition and only one sealed envelope with their school and team name or similar acronym. The balls are marked with the team name or similar acronym with suffix #1 and #2 for identifying each of the two balls. A judge will arbitrarily choose ball #1 or ball #2 for submission to the competition. The team will submit the chosen ball and envelope to the judge. The team will keep the ball not chosen available for the judge until the competition is closed. The judges will minimally handle the balls. Once chosen, the ball will be handled primarily by one person from each team throughout the competition. The bowling ball submitted will be individually checked for compliance to the

requirements of Sections 2 through 4 of these rules. Only after the qualification for further testing has been completed, will each qualifying bowling ball be submitted to the Roll Test and Load Test.

b. Roll Test

The bowling ball will be positioned at the top of a V-shaped ramp and propelled down the ramp by the force of gravity onto a flat surfaced lane. (See diagram below) As shown below in the illustration, the ramp shall be 1,220 mm long and raised 400 mm on one end in order to achieve a reasonable ball speed. The ball must “strike” between two edges spaced 600 mm apart at the end of the 3,000 mm long lane. Each ball shall be rolled in two orientations as arbitrarily marked “mostly perpendicular” on the ball by the judges. For each orientation, each ball will be given two tries to successfully pass through the strike zone.

c. Load Test

The bowling ball will next be placed in a testing apparatus. The load shall be applied with the initial speed of the crosshead displacement set at 10 mm/min. Load will be applied until the crosshead displacement of the testing apparatus has traveled 25 mm. The load will be recorded at this point. In addition, the load will be recorded at every 5 mm of crosshead displacement and the average of the five loads will be computed, which will be used for final score evaluation (see Section 6).

d. Mass Test

6. Report

a. Teams shall electronically submit a report meeting the requirements listed in this section for the judges to review in advance of the competition. The electronic version of the report shall be submitted prior to the competition as described below in standard PDF format. Failure to follow these rules may result in penalties or disqualification at the judges’ discretion. The electronic report due date is December 12, 2019. Teams should bring a hard copy version of the report to the competition for display during the competition and general display for the ACI attendees if requested. Teams failing to submit the electronic version of the report (including the mix design) as required will be disqualified.

The electronic report should be emailed to bowling@aciiranchapter.org.

b. Each report shall be in the Persian language and contain the following:

i. Include a cover page containing the following:

1. School name and Team name (i.e. University of Concrete, Team Holey)

2. Team members and faculty advisor names

3. Entry Identification Marking matching the specimen marking mentioned in 3.e.

ii. Provide a maximum of two pages of pictures (with proper safety equipment being used) and captions showing the methods of the following:

1. Batching and placing procedures (molding)

2. Compaction and Finishing procedures

3. Curing procedures

4. Preliminary testing of bowling ball, if applicable

iii. Provide a maximum of two pages of narrative, graphs or flow charts showing the team’s decision process in selecting the final mixture design and compaction methods for the bowling ball specimens

iv. Materials Selection

1. Provide a single picture showing all materials used in the submitted bowling ball’s mixture grouped together prior to mixing (i.e. measured materials in separate containers showing relative proportions used).

2. Include a copy of the gradation test results (ASTM C136) for the individual aggregates or combined aggregates as mentioned in 2.b.

3. Attach a submittal sheet for each chemical admixture used in the mixture – these are easily obtained from the manufacturer and will confirm compliance with rule 2.d.

v. Include a copy of the Official Mixture Design spreadsheet in SI units (NOTE: this copy DOES

NOT replace required submission of official mixture design spreadsheet in Excel file format indicated in Section d, below). It is highly recommended to have an industry mentor from your local sponsoring group review your mix design for accuracy

c. The report will not impact the final performance score, however failing to submit the report via email before the deadline and handing in a hard copy of the report on the day of the competitions will result in the teams disqualification .

7. Test Evaluation

Performance Prize Category
The scoring equation –
Final Performance Score = Average Load x (Diameter) x Roll Test Multiplier

1. Final Performance Score = Average Load x (Diameter) x Roll Test Multiplier

a. The diameter is taken as an average of three orthogonal measurements “mostly perpendicular” and chosen by the judges.

b. Two rolls before the Load Test and two rolls after the Load Test. To compute the roll test multiplier, deduct 10% in the final score for each failed roll out of the four rolls attempted during the roll test. Thus, a ball with one failed run would have a 0.90 multiplier for the final score. The lowest multiplier would then be 0.60. If the ball does not roll under its own weight during the second roll test, the rolls will be counted as

failed rolls and will affect the multiplier as such.

c. The team that achieves a Final Score with the highest value will receive the prize for first place. The teams with the next highest values in descending order will receive the prize for second and third place. In the case of a tie, the winner is determined based on largest test load.

d. If a bowling ball fails to reach a deflection of 25 mm prior to reaching the test apparatus’ capacity, the load test will be stopped and the loads associated with any remaining crosshead displacements will be recorded as the capacity of the test machine.

8. Judging

The competition and presiding judge will be appointed by the ACI Iran Chapter Competitions committee.

a. The judges will determine whether or not the rules have been followed.

b. The decision of the judges will be final, and appeals will not be considered.

c. Before convention, the judges wil evaluate the files.

d. Safe and professional behavior is expected in the competition.

e. During the competition, the judges will evaluate the teams for their behavior.

f. Disruptive and unsafe behavior will be penalized in the scoring of the team.

9. Submitting the Bowling Ball Entries and Supporting Materials

a. Registration is required. The Registration Form can be downloaded from the website at www.aciiranchapter.org and must be submitted no later than December 6, 2019 at 4:00 pm.

b. The bowling balls accompanied by the Registration documents and a hard copy of the report must be submitted in person along with the specimen envelope no later than 10:00 a.m. on the first day of the competitions on December 25, 2019.

c. The electronic Report and Official Mixture Design, as described above, shall be submitted through email: bowling@aciiranchapter.org, no later than 4:00 p.m. on 12 December 2019.

10. Compliance with ACI-Bowling Ball Competition Rules

ACI reserves the right to perform detailed examination and check entries for compliance with the competition rules. Examination will also be done after the competition. If examination shows that a team did not follow the rules, the team, their advisor and teams from the same school will be disqualified. ACI Iran Chapter will further document recommendations to sanction the team, their advisor, and/or school/university participation in future competitions.

11. Contact Information

American Concrete Institute – Iran Chapter
Unit 1, No.1, Layli St.,Vanak Ave., Vanak Sq., Tehran, Iran
Phone +9821 88664151 +9821 88664152
E-mail: Convention@aciiranchapter.org

_________________________________

Attachment A:

Eligibility Rules

1- قوانین مسابقه:
تیم های شرکت کننده در مسابقه :
1-1 اعضاي تيم ها، دانش آموزان دبيرستانها، هنرجويان هنرستانهاي فني و حرفه اي، دانشجويان دانشگاه های سراسری، آزاد و موسسات آمورش عالی(مقطع کارشناسی مهندسی عمران ، مکانیک، معدن، معماری، مهندسی شیمی و … در تمامی گرایش ها)، مراکز آموزش عالي، مراكز تحقيقاتي پژوهشي دولتي و غير دولتي می باشند. لازم به ذکر است تعداد تیم های شرکت کننده از هر دانشگاه، موسسه آموزش عالی، دبیرستان، هنرستان و … نامحدود و در هر گرایش می توانند حداکثر دو تیم داشته باشند که باید اعضای تیم ها متفاوت باشند.

مثال:
تیم A از دانشگاه A جهت مسابقه Epd و Cube (استاد راهنما:A و اعضای گروه: 1و 2 و 3 و 4 و 5 و 6 و 7 و 8)
تیم B از دانشگاه A جهت مسابقه Epd و Cube (استاد راهنما:A و اعضای گروه: 9 و 10 و 11 و 12 و 13 و 14 و 15 و 16)
تیم C از دانشگاه A جهت مسابقه Bowling و پل کاغذی (استاد راهنما:B و اعضای گروه: 17 و 18 و 19و 20 و 21 و 22 و 23 و 24)
توجه : تیم C از دانشگاه A اجازه شرکت در مسابقات Cube و Epd را نخواهد داشت.

2-1 شرایط مذکور (بند 1-1) برای تمامی مسابقات غیر از مسابقه طرح پژوهشی، مسابقه کانو بتنی و مسابقه هنر بتنی صادق می باشد.
3-1 چنانچه تعداد تیم های شرکت کننده در هر گرایش به حداقل 4 تیم برسد مسابقه برگزار می شود در غیر اینصورت مسابقه آن گرایش برگزار نخواهد شد و نمونه تحویل گرفته شده به تیم های ثبت نام کننده عودت داده نمی شود.
4-1 هرتیم شامل حداقل 2 نفر و حداکثر 8 نفر عضو به همراه 1 نفر استاد راهنما از همان موسسه آموزش عالی، دبیرستان، هنرستان و … می باشد.
5-1 هر شخص تنها مي تواند در يك تیم عضويت داشته و تیم شرکت کننده می باید معرفی نامه مهمور به مهر از موسسه آموزش عالی، دبیرستان، هنرستان و … معرفی شده را ارائه دهد.
6-1 هر موسسه آموزش عالی، دبیرستان، هنرستان و… برنده حداکثر یک رتبه ( مقام ) خواهد بود.
7-1 استاد راهنما فقط مسئوليت هدايت اعضاي تيم و رعايت قوانين مسابقه از طرف تيم را بر عهده دارد .
8-1 هر استاد راهنما نمي تواند سرپرستي بیش از دو تیم از یک دبیرستان، هنرستان، موسسه آموزش عالی و … بر عهده بگيرد.
9-1 فرم های ثبت نام از طریق ایمیل یا فکس می بایست ارسال شود. شرکت کنندگان فرم ثبت نام را می بایست از وب سایت www.aciiranchpter.org دانلود و تکمیل نموده، به همراه مدارک خواسته شده شامل(معرفی نامه برروی سربرگ دانشگاه، کارت دانشجویی معتبر، کارت ملی، فیش واریزی ثبت نام) به دبیر خانه همایش از طریق ایمیل به آدرس convention@aciiranchapter.org و یا از طریق فکس به شماره 88797454 ارسال نمایند.

10-1 آخرین مهلت ثبت نام برای شرکت در مسابقه توپ بولینگ بتنی ساعت 16:00 روز جمعه تاریخ 15 آذر ماه سال 1398 می باشد.
11-1 آخرین مهلت ارسال گزارش الکترونیکی (بصورت فایل PDF) ساعت 16:00 روز پنجشنبه تاریخ 21 آذر ماه سال 1398 می باشد.
12-1 گزارش های الکترونیکی می بایست به آدرس bowling@aciiranchapter.org در تاریخ مشخص شده در بند 1-11 طبق بخش 6 آیین نامه ارسال شود.
13-1 شرکت کنندگان می بایست یک نسخه گزارش چاپ شده (Hard Copy) را نیز طبق فرمت آورده شده در بند 6 آیین نامه به همراه نمونه های خود در روز اول همایش ساعت 8:00 صبح به محل دریافت نمونه های دانشجویی ارایه نمایند.
14-1 هزینه واریزی جهت ثبت نام به هیچ عنوان عودت داده نمی شود.
15-1 استاد راهنما باید از اعضای هیات علمی و یا مدرسین دانشگاه تیم دانشجویی مربوطه باشد .
16-1 حضور استاد راهنما در روز مسابقه و زمان برگزاری مسابقه تیم خود الزامی است و عدم حضور باعث حذف تیم دانشجویی می شود.
17-1 همراه داشتن اصل معرفی نامه از دانشگاه و کارت دانشجویی در روز همایش الزامی است.

 قابل توجه کلیه دانشجویان و شرکت کنندگان در بیست و دومین همایش ملی سالیانه بتن و زلزله:
همایش ملی سالیانه بتن و زلزله و آیین نامه مسابقات دانشجویی مرکز تحقیقات بتن (متب) طبق مصوبه وزارت علوم، تحقیقات و فناوری متعلق و خاص این مرکز بوده و استفاده از آنها خارج از مسابقات فوق پیگرد قانونی خواهد داشت.