MDOT_MTU - User contributions [en]

C457 System Assembly Instructions

2019-09-21T15:02:52Z

Gcanzalo: /* Raspberry Pi B+ Setup */

=Bill of Materials=

=Raspberry Pi B+ Setup=
# Consult [https://www.raspberrypi.org/help/ Raspberry Pi Help] to setup the Raspberry Pi. Use the Raspbian with Desktop download. It is sufficient to power the Raspberry Pi with a USB cable attached to a computer for setting it up, though expect to see low power warnings.
# Once the Pi is running, install [https://github.com/mtu-most/franklin Franklin firmware] on the Pi:
## Open a terminal.
## Create a new src folder: mkdir src
## Move into folder: cd src
## Clone the required repos:
##*Franklin: <pre>git clone https://github.com/mtu-most/franklin.git</pre>
##*python-fhs: <pre>git clone https://github.com/wijnen/python-fhs.git</pre>
##*python-network: <pre>git clone https://github.com/wijnen/python-network.git</pre>
##*python-websocketd: <pre>git clone https://github.com/wijnen/python-websocketd.git</pre>

=Arduino Uno + CNC Shield=

=Stage=

C457 System Assembly Instructions

2019-09-21T15:01:53Z

Gcanzalo: Created page with "=Bill of Materials= =Raspberry Pi B+ Setup= # Consult [https://www.raspberrypi.org/help/ Raspberry Pi Help] to setup the Raspberry Pi. Use the Raspbian with Desktop download...."

=Bill of Materials=

=Raspberry Pi B+ Setup=
# Consult [https://www.raspberrypi.org/help/ Raspberry Pi Help] to setup the Raspberry Pi. Use the Raspbian with Desktop download. It is sufficient to power the Raspberry Pi with a USB cable attached to a computer for setting it up, though expect to see low power warnings.
# Once the Pi is running, install [https://github.com/mtu-most/franklin Franklin firmware] on the Pi:
## Open a terminal.
## Create a new src folder: mkdir src
## Move into folder: cd src
## Clone the required repos:
##*Franklin: git clone https://github.com/mtu-most/franklin.git
##*python-fhs: git clone https://github.com/wijnen/python-fhs.git
##*python-network: git clone https://github.com/wijnen/python-network.git
##*python-websocketd: git clone https://github.com/wijnen/python-websocketd.git

=Arduino Uno + CNC Shield=

=Stage=

C457 Analysis

2019-09-19T22:55:29Z

Gcanzalo: /* Running an Analysis */

=Introduction=
An x-y stage, controller and software for conducting ASTM C457 Procedures A and B were developed for an MDOT Transportation Materials Research Center supplemental project in 2019. The stage is constructed from readily available components purchased from online retailers. A small number of structural elements were designed and fabricated to complete the stage. The system was designed with low-cost and ease of maintenance in mind, utilizing ballscrew actuators and an Arduino-based controller to drive the two NEMA17 stepper motors. The server operates on a Raspberry Pi and Franklin firmware is used for motion control. A common game controller is used to capture user input and control the stage. The user interface is provided over a web connection, supporting most internet browsers. The interface can be served over a local area network or a monitor, keyboard and mouse can be attached directly to the Raspberry Pi creating the standalone system.

Images in the following instructions can be clicked on to enlarge.

=Initial Settings=
==Organization==
Reports generated by the system include a letterhead containing organization details.
* [[File:c457_main_page.png|240px|right]] Click the "Organization Details" button.{{clear}}
* [[File:c457_org_details.png|240px|right]] Enter the organization details to include in report letterhead and click "Save".{{clear}}
* Organization details are stored on the server.

==Mapping Controller Buttons==
The actions performed by each of the numerous buttons on the game controller is configurable, and a button map is required to perform an analysis. The software will not permit performance of an analysis until at least one button map. Multiple button maps can be stored, allowing customization for each user if required. If only one button map is stored, it will be the default. If more button maps are stored, one of the maps can be designated as the default map and will be selected by default upon starting a new analysis. Users are presented with s election of maps if there are more than one.

ASTM C457 Procedure A requires only three counters, one each for paste, void and "other". Procedure B requires one additional counter "Void Intercept". Additional counters are available for Procedure B, if desired. The software will not permit a map to be saved if the four required counters for Procedure B are not assigned to buttons. "Void Intercept" and any optional Procedure B counters will be ignored when performing Procedure A.

An additional action, "Save Position" allows the user to save the stage position during an analysis. Saved positions will be listed in the main interface. Clicking a saved position will cause the stage move to that position.

* [[File:c457_btn_map.png|240px|right]] Click the "Map Controller Buttons" button.{{clear}}
* [[File:c457_btn_hilite.png|240px|right]] Press a button on the game controller. Note the button name is highlighted in the dialog box.{{clear}}
* [[File:c457_btn_select.png|240px|right]] Select the action to take when the button is pressed.{{clear}}
* [[File:c457_btn_map_name.png|240px|right]] Name the button map and click the "Save" button to save it.{{clear}}
* [[File:c457_btn_multiple.png|240px|right]] Button maps must have unique names. If more than one button map is available, the display will include a map selection at the top of the dialog and a checkbox to indicate the selected map is the default map. The default map cannot be deleted.{{clear}}

=Manual Control of Stage=
The stage can be controlled with the joysticks on the game controller when not running an analysis.

* Click the "Control Stage" button to enable control of the stage using the game controller's joysticks.
* Click "Cancel" when done with the stage.

=Running an Analysis=
An analysis is only possible after creating at least one button map.
* Click the "Start Analysis" button.{{clear}}
* [[File:c457_analysis_details.png|240px|right]] Choose the type of analysis to perform, Procedure A or B. Only the specimen Id text is required. Analysis conditions are determined by the top size of the aggregate. Ensure the proper top size is selected before continuing. Click "Continue" when ready.{{clear}}
* [[File:c457_analysis_corner1.png|240px|right]] Move the stage so that one corner of the analysis area is in the field of view and click the "A" button on the game controller. The "Continue" button will be displayed only after pressing the "A" button. If necessary, reposition the stage and click "Continue" to store the location of the first corner.{{clear}}
* Move the stage to the corner diagonal from the first corner such that the area to be analyzed is covered by a rectangle having the two selected corners. Click the "A" button on the game controller. If necessary, reposition the stage and click "Continue" to store the location of the second corner.{{clear}}
* [[File:c457_analysis_warning.png|240px|right]] If the selected area is smaller than that specified for concrete having aggregate with the top size selected, a warning will be displayed. Analysis can continue, or a new area can be selected.{{clear}}
* [[File:c457_analysis_status.png|240px|right]] [[File:c457_analysis_plot.png|240px|right]] The status display will be updated every time a button is pressed or released, depending on type of analysis. When a button having an action attached to it is pressed, the associated indicator will flash and the text will change color. The position is of the stage is updated at the conclusion of every move. Running analysis results are displayed in table and a history can be plotted by checking the box of the measurement(s) to plot.{{clear}}
* The analysis can be stopped and resumed at any time by simply not using the game controller.
* Interim reports can be generated by clicking the desired report type button.
* Analyses may be aborted at any time. Results can be saved if desired and will have a "ABORTED" prepended to the filename.
* The analysis will conclude

File:C457 analysis warning.png

2019-09-19T22:12:21Z

Gcanzalo:

C457 Analysis

2019-09-19T22:00:57Z

Gcanzalo: /* Running an Analysis */

=Introduction=
An x-y stage, controller and software for conducting ASTM C457 Procedures A and B were developed for an MDOT Transportation Materials Research Center supplemental project in 2019. The stage is constructed from readily available components purchased from online retailers. A small number of structural elements were designed and fabricated to complete the stage. The system was designed with low-cost and ease of maintenance in mind, utilizing ballscrew actuators and an Arduino-based controller to drive the two NEMA17 stepper motors. The server operates on a Raspberry Pi and Franklin firmware is used for motion control. A common game controller is used to capture user input and control the stage. The user interface is provided over a web connection, supporting most internet browsers. The interface can be served over a local area network or a monitor, keyboard and mouse can be attached directly to the Raspberry Pi creating the standalone system.

Images in the following instructions can be clicked on to enlarge.

=Initial Settings=
==Organization==
Reports generated by the system include a letterhead containing organization details.
* [[File:c457_main_page.png|240px|right]] Click the "Organization Details" button.{{clear}}
* [[File:c457_org_details.png|240px|right]] Enter the organization details to include in report letterhead and click "Save".{{clear}}
* Organization details are stored on the server.

==Mapping Controller Buttons==
The actions performed by each of the numerous buttons on the game controller is configurable, and a button map is required to perform an analysis. The software will not permit performance of an analysis until at least one button map. Multiple button maps can be stored, allowing customization for each user if required. If only one button map is stored, it will be the default. If more button maps are stored, one of the maps can be designated as the default map and will be selected by default upon starting a new analysis. Users are presented with s election of maps if there are more than one.

ASTM C457 Procedure A requires only three counters, one each for paste, void and "other". Procedure B requires one additional counter "Void Intercept". Additional counters are available for Procedure B, if desired. The software will not permit a map to be saved if the four required counters for Procedure B are not assigned to buttons. "Void Intercept" and any optional Procedure B counters will be ignored when performing Procedure A.

An additional action, "Save Position" allows the user to save the stage position during an analysis. Saved positions will be listed in the main interface. Clicking a saved position will cause the stage move to that position.

* [[File:c457_btn_map.png|240px|right]] Click the "Map Controller Buttons" button.{{clear}}
* [[File:c457_btn_hilite.png|240px|right]] Press a button on the game controller. Note the button name is highlighted in the dialog box.{{clear}}
* [[File:c457_btn_select.png|240px|right]] Select the action to take when the button is pressed.{{clear}}
* [[File:c457_btn_map_name.png|240px|right]] Name the button map and click the "Save" button to save it.{{clear}}
* [[File:c457_btn_multiple.png|240px|right]] Button maps must have unique names. If more than one button map is available, the display will include a map selection at the top of the dialog and a checkbox to indicate the selected map is the default map. The default map cannot be deleted.{{clear}}

=Manual Control of Stage=
The stage can be controlled with the joysticks on the game controller when not running an analysis.

* Click the "Control Stage" button to enable control of the stage using the game controller's joysticks.
* Click "Cancel" when done with the stage.

=Running an Analysis=
An analysis is only possible after creating at least one button map.
* Click the "Start Analysis" button.{{clear}}
* [[File:c457_analysis_details.png|240px|right]] Choose the type of analysis to perform, Procedure A or B. Only the specimen Id text is required. Analysis conditions are determined by the top size of the aggregate. Ensure the proper top size is selected before continuing. Click "Continue" when ready.{{clear}}
* [[File:c457_analysis_corner1.png|240px|right]] Move the stage so that one corner of the analysis area is in the field of view and click the "A" button on the game controller. The "Continue" button will be displayed only after pressing the "A" button. If necessary, reposition the stage and click "Continue" to store the location of the first corner.{{clear}}
* Move the stage to the corner diagonal from the first corner such that the area to be analyzed is covered by a rectangle having the two selected corners. Click the "A" button on the game controller. If necessary, reposition the stage and click "Continue" to store the location of the second corner.{{clear}}
* [[File:c457_analysis_warning.png|240px|right]] If the selected area is smaller than that specified for concrete having aggregate with the top size selected, a warning will be displayed. Analysis can continue, or the area can be reselected.{{clear}}
* [[File:c457_analysis_status.png|240px|right]] .{{clear}}

C457 Analysis

2019-09-19T21:59:01Z

Gcanzalo: /* Running an Analysis */

=Introduction=
An x-y stage, controller and software for conducting ASTM C457 Procedures A and B were developed for an MDOT Transportation Materials Research Center supplemental project in 2019. The stage is constructed from readily available components purchased from online retailers. A small number of structural elements were designed and fabricated to complete the stage. The system was designed with low-cost and ease of maintenance in mind, utilizing ballscrew actuators and an Arduino-based controller to drive the two NEMA17 stepper motors. The server operates on a Raspberry Pi and Franklin firmware is used for motion control. A common game controller is used to capture user input and control the stage. The user interface is provided over a web connection, supporting most internet browsers. The interface can be served over a local area network or a monitor, keyboard and mouse can be attached directly to the Raspberry Pi creating the standalone system.

Images in the following instructions can be clicked on to enlarge.

=Initial Settings=
==Organization==
Reports generated by the system include a letterhead containing organization details.
* [[File:c457_main_page.png|240px|right]] Click the "Organization Details" button.{{clear}}
* [[File:c457_org_details.png|240px|right]] Enter the organization details to include in report letterhead and click "Save".{{clear}}
* Organization details are stored on the server.

==Mapping Controller Buttons==
The actions performed by each of the numerous buttons on the game controller is configurable, and a button map is required to perform an analysis. The software will not permit performance of an analysis until at least one button map. Multiple button maps can be stored, allowing customization for each user if required. If only one button map is stored, it will be the default. If more button maps are stored, one of the maps can be designated as the default map and will be selected by default upon starting a new analysis. Users are presented with s election of maps if there are more than one.

ASTM C457 Procedure A requires only three counters, one each for paste, void and "other". Procedure B requires one additional counter "Void Intercept". Additional counters are available for Procedure B, if desired. The software will not permit a map to be saved if the four required counters for Procedure B are not assigned to buttons. "Void Intercept" and any optional Procedure B counters will be ignored when performing Procedure A.

An additional action, "Save Position" allows the user to save the stage position during an analysis. Saved positions will be listed in the main interface. Clicking a saved position will cause the stage move to that position.

* [[File:c457_btn_map.png|240px|right]] Click the "Map Controller Buttons" button.{{clear}}
* [[File:c457_btn_hilite.png|240px|right]] Press a button on the game controller. Note the button name is highlighted in the dialog box.{{clear}}
* [[File:c457_btn_select.png|240px|right]] Select the action to take when the button is pressed.{{clear}}
* [[File:c457_btn_map_name.png|240px|right]] Name the button map and click the "Save" button to save it.{{clear}}
* [[File:c457_btn_multiple.png|240px|right]] Button maps must have unique names. If more than one button map is available, the display will include a map selection at the top of the dialog and a checkbox to indicate the selected map is the default map. The default map cannot be deleted.{{clear}}

=Manual Control of Stage=
The stage can be controlled with the joysticks on the game controller when not running an analysis.

* Click the "Control Stage" button to enable control of the stage using the game controller's joysticks.
* Click "Cancel" when done with the stage.

=Running an Analysis=
An analysis is only possible after creating at least one button map.
* Click the "Start Analysis" button.{{clear}}
* [[File:c457_analysis_details.png|240px|right]] Choose the type of analysis to perform, Procedure A or B. Only the specimen Id text is required. Analysis conditions are determined by the top size of the aggregate. Ensure the proper top size is selected before continuing. Click "Continue" when ready.{{clear}}
* [[File:c457_analysis_corner1.png|240px|right]] Move the stage so that one corner of the analysis area is in the field of view and click the "A" button on the game controller. The "Continue" button will be displayed only after pressing the "A" button. If necessary, reposition the stage and click "Continue" to store the location of the first corner.{{clear}}
* Move the stage to the corner diagonal from the first corner such that the entire area to be analyzed lies between the two corners. Click the "A" button on the game controller. If necessary, reposition the stage and click "Continue" to store the location of the second corner.{{clear}}
* [[File:c457_analysis_warning.png|240px|right]] If the selected area is smaller than that specified for concrete having aggregate with the top size selected, a warning will be displayed. Analysis can continue, or the area can be reselected.{{clear}}
* [[File:c457_analysis_status.png|240px|right]] .{{clear}}

C457 Analysis

2019-09-19T21:58:29Z

Gcanzalo: /* Running an Analysis */

=Introduction=
An x-y stage, controller and software for conducting ASTM C457 Procedures A and B were developed for an MDOT Transportation Materials Research Center supplemental project in 2019. The stage is constructed from readily available components purchased from online retailers. A small number of structural elements were designed and fabricated to complete the stage. The system was designed with low-cost and ease of maintenance in mind, utilizing ballscrew actuators and an Arduino-based controller to drive the two NEMA17 stepper motors. The server operates on a Raspberry Pi and Franklin firmware is used for motion control. A common game controller is used to capture user input and control the stage. The user interface is provided over a web connection, supporting most internet browsers. The interface can be served over a local area network or a monitor, keyboard and mouse can be attached directly to the Raspberry Pi creating the standalone system.

Images in the following instructions can be clicked on to enlarge.

=Initial Settings=
==Organization==
Reports generated by the system include a letterhead containing organization details.
* [[File:c457_main_page.png|240px|right]] Click the "Organization Details" button.{{clear}}
* [[File:c457_org_details.png|240px|right]] Enter the organization details to include in report letterhead and click "Save".{{clear}}
* Organization details are stored on the server.

==Mapping Controller Buttons==
The actions performed by each of the numerous buttons on the game controller is configurable, and a button map is required to perform an analysis. The software will not permit performance of an analysis until at least one button map. Multiple button maps can be stored, allowing customization for each user if required. If only one button map is stored, it will be the default. If more button maps are stored, one of the maps can be designated as the default map and will be selected by default upon starting a new analysis. Users are presented with s election of maps if there are more than one.

ASTM C457 Procedure A requires only three counters, one each for paste, void and "other". Procedure B requires one additional counter "Void Intercept". Additional counters are available for Procedure B, if desired. The software will not permit a map to be saved if the four required counters for Procedure B are not assigned to buttons. "Void Intercept" and any optional Procedure B counters will be ignored when performing Procedure A.

An additional action, "Save Position" allows the user to save the stage position during an analysis. Saved positions will be listed in the main interface. Clicking a saved position will cause the stage move to that position.

* [[File:c457_btn_map.png|240px|right]] Click the "Map Controller Buttons" button.{{clear}}
* [[File:c457_btn_hilite.png|240px|right]] Press a button on the game controller. Note the button name is highlighted in the dialog box.{{clear}}
* [[File:c457_btn_select.png|240px|right]] Select the action to take when the button is pressed.{{clear}}
* [[File:c457_btn_map_name.png|240px|right]] Name the button map and click the "Save" button to save it.{{clear}}
* [[File:c457_btn_multiple.png|240px|right]] Button maps must have unique names. If more than one button map is available, the display will include a map selection at the top of the dialog and a checkbox to indicate the selected map is the default map. The default map cannot be deleted.{{clear}}

=Manual Control of Stage=
The stage can be controlled with the joysticks on the game controller when not running an analysis.

* Click the "Control Stage" button to enable control of the stage using the game controller's joysticks.
* Click "Cancel" when done with the stage.

=Running an Analysis=
An analysis is only possible after creating at least one button map.
* Click the "Start Analysis" button.{{clear}}
* [[File:c457_analysis_details.png|240px|right]] Choose the type of analysis to perform, Procedure A or B. Only the specimen Id text is required. Analysis conditions are determined by the top size of the aggregate. Ensure the proper top size is selected before continuing. Click "Continue" when ready.{{clear}}
* [[File:c457_analysis_corner1.png|240px|right]] Move the stage so that one corner of the analysis area is in the field of view and click the "A" button on the game controller. The "Continue" button will be displayed only after pressing the "A" button. If necessary, reposition the stage and click "Continue" to store the location of the first corner.{{clear}}
* [[File:c457_analysis_corner2.png|240px|right]] Move the stage to the corner diagonal from the first corner such that the entire area to be analyzed lies between the two corners. Click the "A" button on the game controller. If necessary, reposition the stage and click "Continue" to store the location of the second corner.{{clear}}
* [[File:c457_analysis_warning.png|240px|right]] If the selected area is smaller than that specified for concrete having aggregate with the top size selected, a warning will be displayed. Analysis can continue, or the area can be reselected.{{clear}}
* [[File:c457_analysis_status.png|240px|right]] .{{clear}}

File:C457 analysis corner1.png

2019-09-19T21:56:50Z

Gcanzalo:

File:MDOT pore index device.JPG

2018-07-26T16:07:46Z

Gcanzalo:

Iowa Pore Index

2018-07-26T15:57:46Z

Gcanzalo: Initial edit

=MDOT Iowa Pore Index Device Instructions=
[[File:MDOT_pore_index_device.JPG|thumb|center]]

==Introduction==
MDOT commissioned design and construction of a custom device for performing Iowa Pore Index testing of carbonate aggregate. The device has automated much of the test, requiring minimal user interaction.

These instructions cover use of the device.

No standard method for this test has been established.

==Importance of Test==
The Iowa Pore Index is a measure of the capacity of a carbonate aggregate to absorb water. A known mass of carbonate aggregate is immersed in water. Air pressure is applied and the amount of water pushed into aggregate pores is measured after 60 seconds and again after 15 minutes. The volumes are corrected for expansion and trapped air in the measuring system, producing two values; the Primary Load and the Secondary Load. Experience has demonstrated that these values are related to the durability of the aggregate and the development of "D" cracking in concrete pavements.

==Methodology==
The device requires measurement of expansion and trapped air prior to performing the first test of the day. This is performed by running a test with a dense and impervious aggregate proxy (e.g. glass marbles) and recording Primary and Secondary volume changes.

A known mass of carbonate aggregate is placed in the pressure chamber of the device and the chamber's lid is secured in place. The device is programmed to purge the system with water, during which time the operator manipulates the pressure chamber so as to remove as much air as possible. Following purging, the operator adjusts the water level, records the initial volumes from the sight glasses, and continues the test. The device will automatically apply air pressure and isolate the primary and secondary sight glasses at the appropriate times, allowing the operator to perform other functions while the test is performed. At the conclusion of the test, the operator records the final volumes from the sight glasses and drains the system.

==Instructions==

===Expansion and Entrapped Air Correction===
Prior to performing the first test with aggregate for the day, determine system expansion correction by running the test with 5 kg of an impervious and dense aggregate proxy (e.g. glass marbles). Calculate the volume changes:

::Pcorr = Pf - Pi

::Scorr = Sf - Si

===Performing a Test===
#Weigh approximately 5 kg of the material to test, recording weight to the nearest 0.1 gram as W.
#Place the material into the pressure chamber and tip the chamber so that space is created for the down-pipe in the chamber's cover.
#Place the cover on the chamber and seal in place, tightening all four wingnuts.
#Insure that the air and water supplies are attached to the device and turned on. Ensure the drain and vent lines are secured in an appropriate drain.
#Start the test; the device will start water flowing into the system.
#While filling with water, rock the chamber or beat it with a rubber mallet to dislodge and remove air from the chamber and aggregate.
#Three short beeps will sound when the device has been purged with water. Adjust the water level in the sight glasses as required by pulsing the water or drain valves.
#Click "Continue". The device will prompt to record levels.
#Record the the level in the primary sight glass as Pi and the level in the secondary secondary sight glass as Si.
#Select "Continue". The device will automatically adjust valves and apply air pressure. The remainder of the test can be performed unattended and will conclude in 15 minutes.
#Five long beeps will sound at the conclusion of the test. A prompt will appear to record levels.
#Record the level in the primary sight glass as Pf and the level in the secondary sight glass as Sf.
#Click "Continue".
#Click "Drain System" to initiate draining.
# Remove the cover from the pressure chamber.
#Remove the wet aggregate from the chamber.
*To minimize corrosion, the chamber should be left open and dry when not in use.
#The corrected volume changes are calculated for both primary and secondary loads:
::VP = Pf - Pi - Pcorr
::VS = Sf - Si - Scorr

===Calculating Pore Index===
Primary Pore Index:

P = 9000 * VP / W

Secondary Pore Index:

S = 9000 * VS / W