scholarly journals Calculating Compressive and Flexural Strength of Concrete by Computer Program

2020 ◽  
pp. 33-40
Keyword(s):  
Quality Control ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Data Storage ◽  
Engineering Project ◽  
Design Strength ◽  
Storage And Retrieval ◽  
Code Of Practice ◽  
Standard Code ◽  
Compressive Strength Of Concrete

The testing of concrete for its desired strength after casting is one of prime activities quality control of civil engineering project executions. The concrete is chiefly tested for its compressive strength and then the results are compared or checked with the desired design strength. In the era of computers used in every spectrum of life, the testing of materials and its results calculations also needs to be programed for calculations, validations and data storage. The cell based software do provide ease of calculations but storage and retrieval of data is difficult in those software. The current study is an effort to develop a program the calculations of compressive strength of concrete and flexural strength of the concrete as per Indian Standard Code of Practice. The standalone customized software used in calculations gives accurate and consistent results. Also, the validations programed with logics avoid hazy manual interpretations of the regulatory provisions and gives accurate results.

scholarly journals Compressive Strength of Interlocking Concrete Pavement Block influenced by Admixtures

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Compressive Strength ◽  
Concrete Pavement ◽  
Transport Infrastructure ◽  
Parking Lots ◽  
Code Of Practice ◽  
Standard Code ◽  
Concrete Blocks ◽  
Live Loads ◽  
Laboratory Investigations ◽  
Compressive Strength Of Concrete

The interlocking concrete pavement blocks are quite commonly used to construct the pedestrian walkways and parking lots of transport infrastructure. Such blocks need adequate compressive strength to withstand the design live loads. In this paper, the influence of admixtures on the compressive strength of the blocks are studied through a series of laboratory investigations. The M35 grade of concrete conforming to the Indian Standard code of practice has been used with a standard superplasticizer as admixtures added at specified weights. The study implied that the use of admixtures alters the compressive strength of concrete blocks significantly.

scholarly journals Experimental Study on Influence of Methylcellulose on Tensile and Flexural Strength of Normal Strength Ordinary Portland Cement Concrete

2021 ◽  
Vol 40 (4) ◽  
pp. 703-713
Author(s):  
Ali Ahmed ◽  
Shakir Ahmad ◽  
Muhammad Mannal Kaleem ◽  
Muhammad Bilal Zahid
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Control Sample ◽  
Modulus Of Rupture ◽  
Compression Tests ◽  
Portland Cement Concrete ◽  
Concrete Cylinder ◽  
Compressive Strength Of Concrete ◽  
Normal Strength

Current study explores the possibility of improvement in various categories of concrete’s strengths (including tensile strength, flexural strength etc.) by using methylcellulose as an additive. The effect of methylcellulose on concrete’s compressive strength has also been investigated experimentally. Concrete samples were casted with several methylcellulose to binder ratios varying from 0.002 to 0.01 by weight of cement. Several tests were performed on concrete specimens including concrete cylinder and cube compression tests, split cylinder tests and modulus of rupture tests. Results showed that addition of methylcellulose increased the tensile strength of concrete. Addition of 0.2% of methylcellulose increased the tensile strength of concrete by 16%. This increase in tensile strength reached up to 73% of the control sample on addition of 1% methylcellulose. It was observed that the effect of methylcellulose on compressive strength of concrete depends upon the type of samples being tested (cube or cylinder). The compressive strength of concrete cylinders showed a plateau behavior with peak at 0.4% methylcellulose content with an increase of 18.7%. Effect of methylcellulose on concrete cylinder strength becomes insignificant beyond 0.6%. It was observed that addition of methylcellulose reduces the modulus of rupture values. The reduction in MOR was only 3% at 0.2% methylcellulose content but it grew to 30% at 1% methylcellulose content. The research presents an effective way of increasing tensile strength of concrete but without significant effect on concrete’s compressive strength and modulus of rupture values. These findings can be used to determine optimum content of methylcellulose to achieve desired performance from concrete depending upon the intended use.

Recycling of Stone Cutting Waste In the Construction Sector: A Review

2021 ◽  
Vol 47 (1) ◽  
pp. 56-60
Author(s):  
Kamel Al-Zboon ◽  
Talal Masoud
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Construction Sector ◽  
Replacement Ratio ◽  
Splitting Strength ◽  
Substitution Ratio ◽  
Stone Cutting ◽  
Compressive Strength Of Concrete ◽  
The Cost ◽  
The Impact

Huge amounts of stone cutting waste are generated annually posing a heavy environmental load on nature and resulting in economic challenge to the plants' owners. The conducted researches in this field showed that stone, marble and granite waste could be reused in many applications. This paper aims to investigate the possible application of stone cutting waste in the construction sector. Review process includes investigation of the conducted researches, outcomes of the performed projects, and the impact of this waste on the characteristics of concrete compressive strength, flexural strength, splitting strength, concrete workability, bricks strength, terrazzo tile strength and soil properties. The results revealed that at suitable substitution ratio, this waste can increase the compressive strength of concrete up to 21%, the flexural strength by 33% and splitting strength by 4.3%. In contrast, the compressive strength of bricks decreased by up to 67% at replacement ratio of 100%, and the transverse strength of tiles decreased up to 18% at replacement ratio of 50%. Replacement of soil with stone cutting waste resulted in an improvement in the characteristics of cohesive and sandy soil. Concrete workability decreased significantly with replacement of normal aggregate with stone cutting waste. Such results buttressed the feasibility of reusing this material in the construction sector, which reduces the cost of storage and disposal, and creates a nonconventional income.

Experimental Study of Composite High Strength Self-Compacting Concrete

2017 ◽  
Vol 865 ◽  
pp. 289-294
Author(s):  
Xi Ri Kang ◽  
Guang Xiu Fang
Keyword(s):  
Compressive Strength ◽  
Engineering Application ◽  
High Strength ◽  
Cementitious Material ◽  
Self Compacting Concrete ◽  
Design Strength ◽  
Mix Proportion ◽  
Optimal Mix ◽  
Axial Compressive Strength ◽  
Compressive Strength Of Concrete

This test uses polycarboxylate superplasticizer by adding 15% quantitative fly ash, 10%, 15%, 20% of slag, and 5%,7.5%, 10% of silica fume of the total amount of the cementitious material to be an equivalent replacement for cement. Ordinary materials were used to make the C70 high strength self-compacting concrete. The concrete slump, expansion degree, and the axial compressive strength of concrete were studied. Through testing, the mix proportion of each group of concrete slump was determined to be above 250mm. And the expansion degree to be above 550mm. The axial compressive strength satisfied the design strength value. At the same time, the optimal mix ratio was proposed. And the economic performance of each group was analyzed. There are references for a similar experimental design and engineering application.

Pavement Performance of Low Dosage Cement Stabilized Gravel Powder Mixed with Aggregates

2013 ◽  
Vol 668 ◽  
pp. 48-52 ◽  
Author(s):  
Chuan Yi Zhuang ◽  
Ya Li Ye
Keyword(s):  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Mix Design ◽  
Pavement Performance ◽  
Economic Factors ◽  
Engineering Project ◽  
Design Strength ◽  
Test Analysis ◽  
Mixed Aggregates ◽  
Low Dosage

On the basis of test analysis, mix design of cement stabilized gravel powder, cement stabilized gravel powder mixed with 20% aggregates and cement stabilized gravel powder mixed with 40% aggregates were compared, their unconfined compressive strength were tested, and the mixed aggregates ratio and mix design were ultimately determined. The experimental results show that mixing a certain amount of aggregate can reduce cement dose and meet the design strength. Engineering project cost by mixing with a certain amount of aggregate was little higher than that of cement stabilized gravel powder. Comprehensively considering technical and economic factors, the recommended amount of aggregates mixed with 30% and cement dose of 2%.

Relationship between Compressive, Splitting Tensile and Flexural Strength of Concrete Containing Granulated Waste Polyethylene Terephthalate (PET) Bottles as Fine Aggregate

2013 ◽  
Vol 795 ◽  
pp. 356-359 ◽  
Author(s):  
Mohd Irwan Juki ◽  
Mazni Awang ◽  
Mahamad Mohd Khairil Annas ◽  
Koh Heng Boon ◽  
Norzila Othman ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Polyethylene Terephthalate ◽  
Fine Aggregate ◽  
Pet Bottles ◽  
Fine Aggregates ◽  
Compressive Strength Of Concrete ◽  
Waste Polyethylene

This paper describes the experimental investigation of relationship between splitting tensile strength and flexural strength with the compressive strength of concrete containing waste PET as fine aggregates replacement. Waste PET was reprocesses and used as the artificial fine aggregate at the replacement volume of 25%, 50% and 75%, Cylindrical and prism specimens were tested to obtain the compressive, splitting tensile and flexural strength at the age of 28 days. Based on the investigation, a relationship for the prediction of splitting tensile and flexural strength was derived from the compressive strength of concrete containing waste PET as fine agglegate replacement.

scholarly journals https://www.acapublishing.com/dosyalar/baski/CEBACOM_2021_196.pdf

2021 ◽  
Vol 1 (3) ◽  
pp. 16-22
Author(s):  
İlker TEKİN
Keyword(s):  
Quality Control ◽  
Compressive Strength ◽  
Shear Walls ◽  
Limited Information ◽  
Construction Sites ◽  
Granulated Blast Furnace Slag ◽  
Compressive Strength Of Concrete ◽  
Non Destructive ◽  
Ready Mixed Concrete

The compressive strength of concrete could be evaluated during and after construction because of a weakness in a reinforced concrete structural member appeared. Quality control of concrete in existing and new constructions can be evaluated by several methods. If the compressive strength did not comply with the design requirements, core samples from the low strength structural members are usually taken to evaluate the structural capability. In the construction sites, compressive strengths of columns and shear walls are the most important. Also, the preparing of quite simple reports for the quality control analyses of a construction is common especially in slab and beam analyses. Hence, in this paper, a new sightseeing assessment is recommended to this analysis. In this study, in-situ non-destructive and destructive investigations in newly constructed building slabs and beams were performed because of the weakness of concrete. With this scope, non-destructive and core sampling examinations were performed on slabs and beams according to the TS EN 13791. Building was constructed by using ready-mixed concrete with CEM I 42.5R and CEM II/B-S 42.5N type cement. As a result of this study, it is thought that the TS EN 13791 contains limited information for the evaluation of newly constructed building for concrete because of its varied ingredients. Compressive strength of concrete produced with granulated blast furnace slag like pozzolanic materials instead of cement needs more time to reach required strength if it is not designed for early strength.

Study on Mechanical Properties and Impermeability of Rubber Concrete

2014 ◽  
Vol 629-630 ◽  
pp. 467-472
Author(s):  
Xiu Hua Zheng ◽  
Xu Zhang ◽  
Shi Zuo Zhan
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Rubber Particle ◽  
Particle Sizes ◽  
Rubber Content ◽  
Rubber Powder ◽  
Compressive Strength Of Concrete ◽  
Electric Flux ◽  
Powder Content ◽  
Rubber Concrete

The effects of the size and volumetric content of rubber powder on properties of concrete, including flexural strength, compressive strength and permeability, were studied in this paper. Two different particle sizes (20 meshand 60 mesh) of rubber powder were chosen to replace the sand with volume content of sand as5%, 10%, 15%, 20%, 25%, 30% respectively. The results showed that both flexural and compressive strength of concrete, especially compressive strength, decreased with the increase of rubber content. Moreover, the smaller the particle of rubber powder, the greaterer the strength of the concrete, which was not obvious as effect of rubber powder content on the strength of concrete. The impermeability of concrete increased with the increase of rubber powder content. The electric flux of concrete with 30% rubber powder reduced to about 900 C, which was only 1/5 of that with 5%. At the same content, smaller rubber particle has positiveeffects on the impermeability of concrete. Keywords: rubber concrete,rubber powder, compressive strength,flexural strength, permeability performance.

Evaluation of Empirical Relation between Compressive and Flexural Strength of Concrete Partially Using Alccofine and Nano-Silica

2021 ◽  
Vol 1167 ◽  
pp. 77-86
Author(s):  
K. Ashwini ◽  
P. Srinivasa Rao
Keyword(s):  
Compressive Strength ◽  
Regression Analysis ◽  
Flexural Strength ◽  
Empirical Equation ◽  
Empirical Relation ◽  
Ternary Blend ◽  
Nano Silica ◽  
Strength Data ◽  
Compressive Strength Of Concrete ◽  
Ternary Blended Concrete

In this paper, the flexural strength of concrete using alccofine and nano-silica was investigated experimentally and analytically. 15% alccofine and 3% nano-silica by weight of cement was used as a binary and ternary blend in three concrete grades M40, M50, and M60. Compressive strength and flexural strength were obtained experimentally by curing the specimens in water for 28 days. The empirical equation between compressive strength and flexural strength in the form of fr =bfc’n was obtained using regression analysis. The proposed empirical relation was compared with relations given by a code of practices and the relations reported by other researchers for predicting flexural strength using the compressive strength of concrete. The accuracy of the proposed empirical relation was validated using various statistical equations. From the experimental results, it was found that the cubic compressive strength and flexural strength of ternary blended concrete mixes using alccofine and nano-silica was 20 to 29% and 32 to 39 % higher compared to the control mixes. From the values of statistical equations, the proposed relation was found accurate. It showed less error compared to other relations and can be used to determine flexural strength results based on compressive strength data.

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