Giatec SmartRock User manual

User Guide
Sm ar t Rock
Wireless Concrete Quality Control
Sm ar t Concr et e Test ing Technol ogies

Sm ar t Rock
Activation
wires
Temperature
Sensor
Wireless
Transmitter / Logger

4
Quick St ar t
1- Tag sensor
2- Install sensor
3- Connect
4- Obt ain results

Gi a t e c Sc i e n t i f i c In c . 1
Dow nl oad and Inst al l t he App
From the Go o g l e Pl a y or the Apple App Store, sear ch f or
Gi a t e c Sm ar t Ro c k . Dow nl oad and inst al l the latest version
of the app on your device.
Af ter the inst al l at ion is complete, click on the Giatec
Sm ar t Ro c k icon t o l aunch t he app.
Not e: If you have pr eviousl y inst al l ed t he app, skip t o the
next step.
1

2
Launch theApp

menubar located at the top of t he page and the navigation
pane at the bottom of the page which incl udes t he
following main functions:
Tagging: used t o assign a Nam e or ID t o a sensor .
Co n n e c t : used to wirelessly connect to a previously
tagged sensor.
View: w her e t he user can see t he pl ot s of
downloaded data from the sensor.
Not e: Make sur e t he Bluetoot h on your phone is turned on.
2
Gen e r a l Se t t i n g s
Navigat ion Pane

Gi a t e c Scient if ic Inc. 3
Tur n On The Sensor
St icking out on the bottom side of the sensor, there are
two electrical wires (exposed metal). These wires ar e
used to inst al l and fix the location of the sensor, and also
turn on the sensor at t he sam e tim e.
A common inst al l at ion practice is schematically shown in
the figure below. Twist the exposed wires around the
reinforcing bar (this will also turn on the sensor) and
ensure that the wires are not loose.
Tip 1: Co n n e c t i o n w i r e s a r e d e l i c a t e . Pl e a s e h a n d l e w i t h c a r e
when connecting/disconnecting these wires.
Tip 2: In or der t o m axim ize t he w ir el ess ant enna r ange, do
concrete surface. This will incr ease t he range of sensor
visibility (especially in the early age).
Not e: If st eel w ir es ar e disconnect ed f r om each ot her , t he
sensor turns off and memory is cleared.
3

4
Tag The Sensor
From the home screen on your smartphone, click on the
Tagging key on the screen to go to the tagging page.

on the screen.
Tip: You should in t he of f ice
bef ore using them in concrete. For this, you need to
act ivate/ deactivate them one by one (in the of f ice) and tag
them on theapp as they appear on thescreen separately.You
can write the tag name on the sensor label in order to make
the field installation process easier.
4

Gi a t e c Scient if ic Inc. 5
Tag The Sensor -continued
Ent er a l abel f or t he sensor in t he Sensor Tag f iel d.
Af ter creating the sensor tag, the app will show the list of
tagged sensors in t he connect page.
Not e: Pr eviousl y t agged sensor s w il l not appear in t he
Tagging tab. They can be accessed f r om the Connect tab.
4
1) Ent er Tag nam e
2) Tap to create

6
Co n n ec t i n g t o Se n s o r
a list of tagged sensors is shown.
To connect to a sensor, stand within visibility range of the
sensor (up to 8 meters if the sensor is installed within
5cm from the concrete surface) and wait for the sensor
to establish a communication with the smartphone. This
can be verified by checking the status of the Bluetooth
signal on the right side of the sensor tag. When the sensor
is f ound, the gray signal icon turns into blue.
5

Gi a t e c Scient if ic Inc. 7
Co n n ec t i n g t o Se n s o r -
Co n t i n u ed
Tap on the sensor tag to connect to the sensor.
To f ind a previously t agged sensor, use smart filtering by
The list of sensors can be ref reshed by dragging down the
list while pressing on the screen.

Tip: You can delete a tag by long-pressing on the tag name
and f oll owing t he options on t he popup window.
5

8
Dat a Monit or ing
Af ter the app is connected to the sensor , data will be
right of the screen indicates that the data is in real-time.
The real-time temperat ur e val ue w il l be t r ansm it ted t o
the smartphone and displayed on the screen.
In or der t o see the maturity index and predicted strength
of concrete, the user needs to enter the pouring time and
select the appropriate strength-maturity relationship
(known as mix calibration).
You can st il l view the temperature history by clicking on
the View tab.
6

Gi a t e c Scient if ic Inc. 9
Pour ing Tim e
Pour ing t im e is t he time that concrete is actually placed in
the formwork and cam e into cont act w it h t he
temperature sensor. Ent er t he pour ing dat e and t he t im e.
Fol low the pr ocedur e to set the date and time.
7
(a) Android
(b) iOS

10
Add a Mix Cal i b r at i o n
In or der f or t he app t o be abl e t o cal cul at e and displ ay t he
predicted strength, the user has to define and select a
calibrated mix in the app.
The calibrated mix defines the strength-maturity
relationship for each concrete mixture.
To def ine a new Calibrated mix, go to the settings menu
(the home screen), and tap on the calibrated mixes.
Cl ic k o n +to define a new calibrated mix.
To def ine a new mix, the user needs to know the strength-
maturity relationship.This canbe derived according t o t he
procedure described in the ASTM C 10 7 4 .
A common practice is to use the Nurse-Saul l inear
relationship between the strength and logarit hm of t he
maturity index (ASTM C 1074, Met hod A)
8

Gi a t e c Scient if ic Inc. 11
Add a Mix Cal i b r at i o n -
continued
For this relationship, the user needs to know thefollowing
three parameters (obtained in the lab prior to field work):
Dat um Tem per at ur e
St r engt h at certain ages (e.g. 1, 3 , 7 , 14 , a n d 2 8 d a y s )
Temperature history of concrete (cured at room
temperature) measured at certain time intervals
(minimum of 30 minutes for the f irst 48 hours, and 60
minutes afterwards). The area under the temperature
curve is defined as the maturity index.
8

12
Add a Mix Calibration -
continued
The relationship between the strength and the logarithm
of the maturity index is approximated with a linear
equation in t he app. The intercept (a) and the slope (b) are
calculated by the app for the input dat a set . These values
will be used to predict the strength of in-place concrete.
Ent er t he dat um t em per at ur e, and t he dat a f or t he
strength-maturity relationship.When you aredone,tapon
Cr e a t e . T h e m ix w i l l b e a d d e d t o t h e l is t o f availabl e m ixes.
8

Gi a t e c Scient if ic Inc. 13
Test Result s
When the pouring date and time are set, and an
appr opr iate m ix is sel ect ed, t he t est r esul ts wil l appear on
the screen.
Not e: You can change t he display units between metric and
im per ial f r om t he app setting section shown in Step 8.
9
St r engt h
My Mix
My Mix
Mat ur it y
Min / Max
Temperature

14
View Test Result s - Ch ar t s
In t he View page, t he user can m onit or t he t est r esul t s in
a chart format. The variations of temperature, maturity
index and st r engt h will be illustrated as charts.
(a)
(b)
(c)
Temperature- Time
Mat ur it y Index- Time
St r engt h - Time
Cl ic k o n an y p o in t o n t h e c h a r t t o s e e t h e t e m p e r a t u r e,
maturity index and strength values.
You can pinch and zoom acr oss t he char t t o see t he
details.
The pouring time will be displayed as a r ed dash-line.
The period bef ore pouring time is shaded in green.
10

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Sav e and Shar e
The user can select to save the test results (on Android
devices only) or share the test results (on both iOS and
Android). Cl ick on save/ shar e but t on, and a dial og box w il l
help you choose saving or sharing options on your device.
(a) Save or Share test
results
(b) Select save/share
option
The results will be saved as comma-separated values
(csv) format that can be opened by Microsoft Excel.
11
Sav e
Shar e

16
Cau t i o n
Gi a t e c Sm ar t Rock sensor is designed to record the
temperature history of concrete in situ and estimate its
strength based on the ASTM C 10 7 4 s t a n d a r d s p e c i f i c a t i o n . I t
should be noted that the strength estimation is made based
on a calibrated maturity-strength correlation for a specific
concrete mixture. If the mix design, water content, cement
source, etc. is changed, a new calibration should be
performed. Moreover, as per Section 9 in ASTM C 10 7 4 , i t i s
required that the strength estimated by the maturity method
(using the SmartRock mobile app) is verified by other test
methods before performing any critical operations. As per
ASTM C10 7 4 ( Se c t i o n 9 . 5 .4 ) , i t i s r e q u i r e d t o c a s t f i e l d -molded
cylinders and subject them to standard curing condition in
order to compar e t he m at ur it y index and st r engt h of t hese
specimens with those estimated in the field. If the difference
consistently more than 10%, a new strength-maturity
correlation should be developed.
Terms and Condit ions
By using t he Sm ar t Rock concrete sensor and the
Sm ar t Rock mobile application, you agree to the active
License
:
http://www.giatecscientific.com/terms-and-conditions