INFLUENCE OF USING NON-STANDARD SPECIMEN ON COMPRESSIVE STRENGTH OF NORMAL AND HIGH STRENGTH CONCRETE EXPERIMENTAL AND SIMULATION
Abstract: Compressive strength
of concrete is one of the most important test for construction properties for
quality control of concrete and design new constructions, there are different
molds that are used for casting concrete specimen during the concrete works
according to various standards at different countries. On the other hand, it is
known that different shapes and sizes of concrete specimen can cause
differences in the results of compressive strength.In this research the
influence of specimen sizes and shapes on compressive strength of normal and
high strength concrete are investigated using experimental and simulation
study.
The experimental study was conducted for six different specimen types
cube 150 mm, cube 100 mm, cube 75 mm, cylinder Ø150×300 mm, Ø100×200 mm,
Ø75×150 mm. At six different concrete strength level was 20,30,40,50,60 and 70
MPa according to standard cube specimen and tested at 28 Days of age. For The
experimental study, hardened density, non-destructive tests (Rebound hammer and
UPV), compressive strength and splitting tensile strength for different
concrete strength level were performed and some analyses were done to obtain
conversion factors and some relations between these tests.
The simulation study was conducted by using ANSYS software for two
different specimen size cube 150 mm, cube 75 mm, At two different concrete
strength level was for normal compressive strength 20 MPa and for high
compressive strength 70 MPa. The analyses were done to know the influence of
size and shape on the compressive strength tests of normal and high strength
concrete.
The results of analyses indicate that for all testing, there is a bigger influence
of variation of size and shape of the specimens, by changing the compressive
strength level. The compressive strength increases as the specimen size
decreases.. Also The compressive strength of cube 150 mm is generally higher
than strength cylinder Ø150×300 mm and The conversion factors of compressive
strength between is varied from 0.76 to 0.88 for the designed cube compressive
strength of 20 to 70 MPa. The conversion factors of compressive strength
between standard and non-standard specimen at different concrete strength at 28
days to equivalent 150 mm standard cube specimen had been determined and
presented in table 4.7.
The correlation between (split tensile test / Schmidt hammer test/UPV
test) of standard specimen 150 x 150 mm cube to compressive strength of
non-standard specimen had been determined and presented in the tables 4.8 and
4.9.
The effect of size and shape on the compressive strength tests of normal
and high strength concrete had been analysis by using ANSYS software. This
affected decrease as compressive strength increase.
Keywords: compressive strength
level, influence of specimen sizes and shapes, conversion factors, splitting
tensile strength, Schmidt hammer test, UPV
Author: ABDULATI MOHAMED
ESBATA
Journal Code: jptsipilgg140012
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGj4FQv1aMKKBVC4_mesGV_ZBAKWTejNaV2HxifdICn1Si6-Cbih_Nn3RHQNCq1oxvhyRv2U9yPX6t4k-PCOSIkqYXB__v7DbFjwnVn73zgsW72l7sqKX5dvQ2XVxnqcLrw2CvPzs63oA/s320/E+JURNAL.gif)
Artikel Terkait :
Jp Teknik Sipil gg 2014
- A STUDY OF CAPABILITY AND WILLINGNESS OF LOCAL SOCIETY TO FUND THE OPERATIONAL AND MAINTANANCE OF POLDER IN BANGER RIVER SEMARANG
- THE EFFICACY OF MOTORCYCLE TRAINING TO REDUCE SELF-REPORTED NEGATIVE BEHAVIOUR AND ATTITUDE (CASE STUDY IN UK AND INDONESIA)
- TRAFFIC DISTRIBUTION STUDY ON MULTI-AIRPORT SYSTEMS IN THE GREATER JAKARTA METROPOLITAN AREA (GJMA) AND ASSOCIATED IMPLICATIONS
- EVALUATION OF SOIL EMBANKMENT MASS MOVEMENT BY USING SUBDRAIN SYSTEM AND REINFORCEMENT BASED ON THE NUMERICAL SIMULATION OF SEMARANG-SOLO TOLL ROAD
- TIME SERIES CHARACTERISTIC ANALYSIS OF RAINFALL, LAND USE AND FLOOD DISCHARGE BASED ON ARIMA BOX-JENKINS MODEL
- EVACUATION ROUTE MAPPING AGAINST SLAMET VOLCANO DISASTER AT GUNUNGSARI VILLAGE, PULOSARI SUB DISTRICT, PEMALANG DISTRICT
- THE INFLUENCE OF MOTORCYCLE ON THE CAPACITY OF TWO LANE TWO WAY UNDIVIDED URBAN ROAD LINKS IN DENPASAR, BALI
- Integration of Theory of Planned Behavior and Norm Activation Model on Student Behavior Model Using Cars for Traveling to Campus
- Extreme Rainfall Indices for Tropical Monsoon Countries in Southeast Asia
- An Evaluation of Industrial Facilities Defects in Selected Industrial Estates in Lagos State, Nigeria
- Empirical Evaluation of Construction Material Waste Generated on Sites in Nigeria
- Numerical Prediction of Differences in Micromechanical Fracture Sequence in Notched and Un-Notched Wires for Civil Engineering Applications
- Correlations between Damage Indices and Seismic Parameters for Near-Field Earthquake Records
- Evaluation of Crack Initiation Points of Load-Carrying Cruciform Welded Joints Based on Effective Notch Stress Approach
- An Original Testing Apparatus for Rapid Pull-Out Test
- SWOT Analysis of Housing Co-operatives in South Africa
- Trust to Contractor in Housing Construction
- Prediction of Missing Streamflow Data using Principle of Information Entropy
- Travel Time Estimation and Prediction using Mobile Phones: A Cost Effective Method for Developing Countries
- Design Aspect of including Infill Wall in RC Frame Design
- Experimental Investigation of the Effects of Reverse Bending and Straightening Process on Carbon Steel Bars used for Civil Engineering Applications
- Effect of Rigidity of Plinth Beam on Soil Interaction of Modeled Building Frame Supported on Pile Groups
- Analyses of Steel Bridge Circular Columns using Fiber Model considering Local Buckling
- Shrinkage Behavior Of Steel Fiber Reinforced Concrete On Sandwich Layer Concrete
- The Design Of Hot Mixture Thin Surfacing Containing Asbuton Modified Bitumen For Hot And Arid Region