scholarly journals Comparison of Nondestructive Testing Method for Strength Prediction of Asphalt Concrete Material

2021 ◽  
Vol 7 (1) ◽  
pp. 165-178
Author(s):  
Hashem Al-Mattarneh ◽  
Mohammed Dahim
Keyword(s):  
Compressive Strength ◽  
Construction Materials ◽  
Ultrasound Velocity ◽  
Strength Development ◽  
Rigid Pavement ◽  
Dielectric Method ◽  
Rebound Number ◽  
Compressive Strength Of Concrete ◽  
Nondestructive Testing Method ◽  
Materials Used

Concrete is one of the most common construction materials used in rigid pavement, bridges, roads, highways, and buildings. Compressive strength is one of the most important properties of concrete, which determines its quality. This study aims to present the use of a new surface dielectric method to estimate concrete compressive strength. Six concrete mixtures were produced with compressive strengths ranging from 30 to 60 MPa. Compressive strength and strength development were determined during 28 days of curing. All concrete mixes were tested using the ASTM standard. The dielectric properties, ultrasound velocity, and rebound number of all concrete mixes were also measured at each day of curing. The results obtained from the proposed dielectric method in predicting the compressive strength of concrete were compared with the rebound hammer and ultrasonic velocity that are frequently used to evaluate the compressive strength of concrete.  The dielectric method shows a higher square correlation coefficient than the other two methods. The results also indicate that combined more than one method of nondestructive techniques will lead to higher prediction and could help to reduce some errors associated with using a certain method alone. The result indicate that the finding of this study could lead to help in reducing the time of evaluating concrete during construction and could also provide tools for practicing engineer to take decision faster with more confidence level on quality of concrete. Doi: 10.28991/cej-2021-03091645 Full Text: PDF

scholarly journals PENGARUH PENAMBAHAN SERAT ECENG GONDOK PADA KUAT TEKAN PAVING BLOCK K-200

UKaRsT ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Muttaqin Fauzin Istighfarin ◽  
Rasio Hepiyanto
Keyword(s):  
Compressive Strength ◽  
Water Hyacinth ◽  
Building Materials ◽  
Rigid Pavement ◽  
Cast Concrete ◽  
Additional Water ◽  
Materials Used ◽  
Relationship Of ◽  
Water Hyacinth Fiber

Abstract Paving block is one of the products of building materials used as the top layer of the street structure, compared to other pavements like cast concrete and asphalt, paving block has been widely chosen especially to the streets used to traversed by low-speeed vehicles. This study aims to know and analyze how strong the influence of additional water hyacinth fiber to the compressive strength of K-200 paving block. Method used in this study is experimental method, with the comparison of mix design reffering to the comparison of concrete quality mixture K-200 (SNI 7394-2008). The result is K-200 paving block decreases its compressive strength after given the mixture of water hyacinth fiber. The precentage of the lowest decrease is in the 0,2 mixture of 55,69% and the highest decrease is in the mixture of 0,8 with the decline presentage of of 82,39%. The score of compressive strength for each test object is: Normal of 209,53 kg/cm², 2% of 92,86 kg/cm², 4% of 84,53 kg/cm², 6% of 58,33 kg/cm², and 8% of 36,90 kg/cm². The relationship of non-linear regression can be seen in R² = 1 on  polinomial orde 4. Paving block with with code objects test “Normal” classified as in the quality of paving block B with compressive strength of 209,53 kg/cm² (17,03 Mpa), while for paving block with extra water hyacinth fiber, it is below the compressive strength standard according to SNI 03-0691-1996. Keywords: Rigid Pavement, Paving Block, Water Hyacinth, Compressive Strength.

scholarly journals Assessment of Workability and Compressive Strength of Rice Husk Ash-Blended Palm Kernel Shell Concrete

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
K. O. Oriola
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Construction Materials ◽  
Palm Kernel ◽  
Lightweight Aggregate ◽  
Strength Properties ◽  
Lightweight Aggregate Concrete ◽  
Palm Kernel Shell ◽  
Compressive Strength Of Concrete

The evaluation of agro-industrial by-products as alternative construction materials is becoming more significant as the demand for environmentally friendly construction materials increases. In this study, the workability and compressive strength of concrete produced by combining Palm Kernel Shell (PKS) and Rice Husk Ash (RHA) was investigated. Concrete mixes using a fixed content of 15% RHA as replacement for cement and 20, 40, 60, 80 and 100% PKS as replacement for crushed granite by volume with the mix ratios of 1:1½:3, 1:2:4 and 1:3:6 were produced. The water-to-cement ratios of 0.5, 0.6 and 0.7 were used for the respective mix ratios. Concrete without PKS and RHA served as control mix. The fresh concrete workability was evaluated through slump test. The concrete hardened properties determined were the density and compressive strength. The results indicated that the workability and density of PKSC were lower than control concrete, and they decreased as the PKS content in each mix ratio was increased. The compressive strength of concrete at 90 days decreased from 27.8-13.1 N/mm2, 23.8-8.9 N/mm2and 20.6-7.6 for 1:1½:3, 1:2:4 and 1:3:6, respectively as the substitution level of PKS increased from 0-100%. However, the compressive strength of concrete increased with curing age and the gain in strength of concrete containing RHA and PKSC were higher than the control at the later age. The concrete containing 15% RHA with up to 40% PKS for 1:1½:3 and 20% PKS for 1:2:4 mix ratios satisfied the minimum strength requirements for structural lightweight aggregate concrete (SLWAC) stipulated by the relevant standards. It can be concluded that the addition of 15% RHA is effective in improving the strength properties of PKSC for eco-friendly SLWAC production..

Effect of carbonation on the rebound number and compressive strength of concrete

2009 ◽  
Vol 31 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Jin-Keun Kim ◽  
Chin-Yong Kim ◽  
Seong-Tae Yi ◽  
Yun Lee
Keyword(s):  
Compressive Strength ◽  
Rebound Number ◽  
Compressive Strength Of Concrete

scholarly journals STUDI KUAT TEKAN BETON DENGAN AGREGAT KASAR DARI BATU KAPUR

2015 ◽  
Vol 17 (3) ◽  
Author(s):  
Hartono Hartono
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Weight Ratio ◽  
Concrete Specimen ◽  
Crushed Stone ◽  
Concrete Construction ◽  
Mixed Use ◽  
Compressive Strength Of Concrete ◽  
Materials Used ◽  
Aggregate Material

Hartono, in this paper explain that to obtain the allowed characteristic compressive strength of concrete from a concrete construction is quite difficult , because it is influenced by the mix of materials used for the manufacture of the construction, in which the require material of the concrete mix had to be in accordance with Reinforced Concrete Indonesia Rule Year 1991. The main factor of mix material that affect permitted the compressive strength of concrete is aggregate characteristics, namely the coarse aggregate or crushed stone. Therefore this study is intended to determine the compressive strength of concrete with the characteristics of coarse aggregate material of crushed stone that comes from limestone. This research use Gresik PC mixture concrete, muntilan sand, and kricak of limestone. To determine concrete compressive characteristics strength of concrete, concrete specimen as many as 20 pieces, with mixed-use PC weight ratio of 1 : 2 Ps : 3, cube molded kricak with the size of 15 cm X 15 cm X 15 cm was made. From these results, it can be obtained that concrete compressive characteristic strength σ 1 bk = 215.41 kg / cm2. Keyword: Concrete construction

USAGE OF CALCIUM CARBONATE BIODEPOSITION IN MODIFICATION OF CEMENTITIOUS COMPOSITES

2018 ◽  
Vol 172 (52) ◽  
pp. 11-22
Author(s):  
Daniel Zawal ◽  
Krzysztof Górski ◽  
Agnieszka Dobosz
Keyword(s):  
Compressive Strength ◽  
Calcium Carbonate ◽  
Construction Materials ◽  
The Other ◽  
Cementitious Composites ◽  
Historic Buildings ◽  
Effective Solution ◽  
Other Hand ◽  
Compressive Strength Of Concrete ◽  
Durability Of Concrete

Biodeterioration of construction materials is an undesired phenomenon, generating high costs of constraction repairs. On the other hand, occurrence of some bacteria can affect prevention and self repair of fractures formed in concrete. Biodeposition is an effective solution for increasing compressive strength of concrete, extending durability of concrete constructions and renovating limestone elements in facades of historic buildings.

scholarly journals Compressive Strength Studies on Recycled Binder Concrete

2021 ◽  
Vol 11 (4) ◽  
pp. 7332-7335
Author(s):  
D. D. Nguyen ◽  
V. T. Phan
Keyword(s):  
Compressive Strength ◽  
Strength Development ◽  
Recycled Materials ◽  
Strength Tests ◽  
Compressive Strength Of Concrete ◽  
Recycled Waste ◽  
Curing Cement

Recycled materials are gradually utilized in concrete. This paper examines the use of recycled binder in concrete. The compressive strength tests on concrete incorporating recycled binder instead of cement were carried out after 7, 14, and 28 days of curing. Cement was replaced by the recycled binder in ratios of 10%, 20%, and 30% by weight. The results show that the compressive strength of concrete is strongly affected by the percentage of the recycled binder. It has been found that the compressive strength decreases linearly with the increasing content of recycled binder. The recycled binder does not affect the strength development of concrete. In order to apply recycled waste to concrete as a binder, it is necessary to perform supplement research with appropriate additives to compensate for the loss of the compressive strength.

scholarly journals Strength, sustainability and affordability of bamboo and mud bricks as materials used in local construction

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Leopold Mbereyaho ◽  
Jean de Dieu Mutabaruka ◽  
Abaho G. Gershome ◽  
Armel Ineza ◽  
Ezra Ngirabatware
Keyword(s):  
Compressive Strength ◽  
Cost Estimation ◽  
Building Materials ◽  
Construction Materials ◽  
Conventional Concrete ◽  
Environment Friendly ◽  
Study Results ◽  
Mud Bricks ◽  
Materials Used ◽  
Sisal Fibers

The construction industry is one of the rapidly growing and the cost analysis suggests that the materials cost is constantly increasing. The continuous extraction of aggregates intensively used in the field is negatively acting to the environment. Therefore research in construction materials should focus not only on discovering new alternative materials but also in appreciating the quality of those locally available for their better application. This research aimed at evaluating the performance of bamboo and mud bricks as two available local building materials, especially with regards not only to their strength but also to new performance concepts which are affordability, energy efficiency and environment friendly aspects. The study comprised mainly of laboratory tests of used materials and cost estimation analysis. Study results established that the considered bamboo and mud bricks, made in ordinary soils and reinforced by sisal fibers were reusable, environment friendly materials and energy efficient, with the bamboo showing the thermal conductivity equal to 0.1496 W/mK. Regarding the compressive strength, reinforced mud bricks with sisal fibers showed an increased value from 1.75 MPA to 4.29MPA, what was in line with related previous studies. The average compressive strength of the studied Arundinaria Alpine bamboo was established at 133,7MPA, while its tensile strength was 88.16MPA and these values were reasonable with comparison to other conventional materials. It is recommended that further research in checking the performance of other types of bamboo as well as about new construction technologies be undertaken in order to enhance the service life of both bamboo and mud bricks.Keywords: Affordability, Bamboo, Conventional concrete, Materials strength, Mud reinforced bricks, Sustainability

scholarly journals Study of the influence of compressive strength concrete on columns during the design of a multi-floor building

2019 ◽  
Vol 12 (5) ◽  
pp. 1126-1147
Author(s):  
G. M. FREGONEZI ◽  
W. W. WUTZOW ◽  
R. D. VANDERLEI
Keyword(s):  
Compressive Strength ◽  
Concrete Columns ◽  
Structural Safety ◽  
Structural Elements ◽  
Computational Tool ◽  
Stability Parameters ◽  
Total Cost ◽  
Strength Concrete ◽  
Compressive Strength Of Concrete ◽  
Materials Used

Abstract This work aims to analyze the influence of the compressive strength of concrete columns in the design of a multi-floor building using the CAD/TQS computational tool. The strengths of the columns varied in increments of 5 MPa, from 35 MPa to 90 MPa, with a 35 MPa resistance in the remaining structural elements. Analyses of the horizontal deformability, stability parameters, and optimized sections, as well as quantities and cost of the main materials used (concrete, steel, and formwork), were performed. As a result, a 32% reduction to the total area of the columns was achieved; consequently, a reduction in material quantities and the total cost of the building was also achieved. Thus, greater durability was provided without major costs or loss in structural safety.

scholarly journals STRENGTH DEVELOPMENT OF CONCRETE WITH FLY ASH ADDITION

2007 ◽  
Vol 13 (2) ◽  
pp. 115-122 ◽  
Author(s):  
Marta Kosior-Kazberuk ◽  
Małgorzata Lelusz
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Mathematical Models ◽  
Statistical Methods ◽  
Experimental Results ◽  
Strength Development ◽  
Hardened Concrete ◽  
Test Results ◽  
Different Types ◽  
Compressive Strength Of Concrete

Based on experimental results, mathematical models were elaborated to predict the development of compressive strength of concrete with fly ash replacement percentages up to 30 %. Strength of concrete with different types of cement (CEM I 42.5, CEM I 32.5, CEM III 32.5), after 2, 28, 90, 180 days of curing, have been analysed to evaluate the effect of addition content, the time of curing and the type of cement on the compressive strength changes. The adequacy of equations obtained was verified using statistical methods. The test results of selected properties of binders and hardened concrete with fly ash are also included. The analysis showed that concrete with fly ash is characterised by advantageous applicable qualities.

scholarly journals Prediction Model of Compressive Strength Development in Concrete Containing Four Kinds of Gelled Materials with the Artificial Intelligence Method

2019 ◽  
Vol 9 (6) ◽  
pp. 1039 ◽  
Author(s):  
Guohua Liu ◽  
Jian Zheng
Keyword(s):  
Neural Network ◽  
Artificial Intelligence ◽  
Compressive Strength ◽  
Bp Neural Network ◽  
Strength Development ◽  
Intelligence Models ◽  
Artificial Intelligence Models ◽  
Compressive Strength Development ◽  
Compressive Strength Of Concrete ◽  
Conventional Models

Green concrete has been widely used in recent years because its production compliments environmental conservation. The prediction of the compressive strength of concrete using non-destructive techniques is of interest to engineers worldwide. Such methods are easy to carry out because they require little or no sample preparation. Conventional models and artificial intelligence models are two main types of models to predict the compressive strength of concrete. Artificial intelligence models main include the artificial neural network (ANN) model, back propagation (BP) neural network model, fuzzy model etc. Since both conventional models and artificial intelligence models are flawed. This study proposes to build a concrete compressive strength development over time (CCSDOT) model by using conventional method combined with the artificial intelligence method. The CCSDOT model performed well in predicting and fitting the compressive strength development in green concrete containing cement, slag, fly ash, and limestone flour. It is concluded that the CCSDOT model is stable through the use of sensitivity analysis. To evaluate the precision of this model, the prediction results of the proposed model were compared to that of the model based on the BP neural network. The results verify that the recommended model enjoys better flexibility, capability, and accuracy in predicting the compressive strength development in concrete than the other models.

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