Expermental Study on the Mixture Ratio and the Compressive Strength of Concrete with Recycle Crushed Brick Coarse Aggregate

2014 ◽  
Vol 584-586 ◽  
pp. 1362-1365 ◽  
Author(s):  
Qin Liu ◽  
Xiao Na Zhang
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Engineering Application ◽  
Recycled Concrete ◽  
Concrete Compressive Strength ◽  
Mixture Ratio ◽  
Coarse Aggregates ◽  
Compressive Performance ◽  
Compressive Strength Of Concrete ◽  
High Absorption

Considering the high absorption of water is a distinctive feature of recycled crushed bricks coarse aggregate, the mixture ratio text of recycled concrete using crushed bricks as coarse aggregate is carried out, and the compressive performance is studied.The resert indicate , the strength grade of recycled concrete which using bricks as coarse aggregate can reach C20 and C25, characterisitic value of cubic concrete compressive strength at the age of 28 days are 21.2MPa and 27.55MPa;Based on regression analysis of test data , the formulas which estimated the strength of recycled coarse aggregates concrete are given out. Calculated values are in agreement with the measurement values, which can provide a reference for engineering application.

scholarly journals Acidic solution effects on no-fines concrete produced by using recycled concrete as coarse aggregate

2018 ◽  
Vol 162 ◽  
pp. 02002
Author(s):  
Ikbal Gorgis ◽  
Whab Faleh Abd ◽  
Shaker Al-Mishhadani
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Maximum Size ◽  
Recycled Concrete ◽  
Type I ◽  
Coarse Aggregates ◽  
Crushed Concrete ◽  
Compaction Factor ◽  
Single Size ◽  
Better Than

This paper investigates durability of no fine concrete containing demolished concrete as coarse aggregate after crushing to different sizes. Different no fine concrete mixes were considered using Portland cement type I with two types of coarse aggregates, crushed demolished concrete and crushed natural gravel were used with two ratios by weight (1:5 and 1:7) C/Agg. Graded aggregate and single size were used with a maximum size of 20 mm. W /C ratio was kept as 0.4 for all mixes and super-plasticizer was required to keep the same flow and compaction factor value for all mixes. Cube specimens with 150mm were cured and divided to two parts, the first part was exposed to 60 cycles of freezing- thawing; the second part of the sample was immersed in Nitric Acids solution with pH of 3.5 for (7, 28, 90 and 180 days) and then tested for compressive strength. The results indicated that it is possible to produce homogenous and workable mixes by using demolished crushed concrete as coarse aggregate. The compressive strength after cycles of freezing- thawing and immersing in Nitric acid (HNO3) at (7, 28, 90 and 180) days was decreased for samples made with crushed demolished concrete. Also it is found that the performance of concrete mixes containing graded coarse aggregate and 1:5 cement/aggregate ratios was better than other mixes.

scholarly journals The effect of coarse aggregate hardness on the fracture toughness and compressive strength of concrete

2019 ◽  
Vol 258 ◽  
pp. 04011
Author(s):  
Atur P. N. Siregar ◽  
Emma L. Pasaribu ◽  
I Wayan Suarnita
Keyword(s):  
Fracture Toughness ◽  
Compressive Strength ◽  
Los Angeles ◽  
Coarse Aggregate ◽  
Concrete Aggregate ◽  
Beam Size ◽  
Intensity Factors ◽  
Coarse Aggregates ◽  
Los Angeles Abrasion ◽  
Compressive Strength Of Concrete

Coarse aggregate is the dominant constituent in concrete. Aggregate hardness is a variable needed to investigate in determining its effect on the critical stress intensity factors (KIC), dissipated fracture energy (Gf) and compressive strength (fc’) of the concrete. The hardness of coarse aggregate based on Los Angeles abrasion values of 16.7%., 22.6%, and 23.1% was used incorporated with Portland Composite Cement (PCC), and superplasticizer to create specimens. Cubes of 150x150x150 mm were employed to determine the fc’, and four beam sizes: 50x100x350 mm, 50x150x500 mm, 50x300x950 mm and 50x450x1250 mm were engaged to determine KIC and Gf. The fc’ and Gf of specimens manufactured by three different hardness of coarse aggregates were 45, 43, 40 MPa and 89.4, 54.0, 56.3 N/m respectively. KIC of specimens was 138.9, 119.4 and 114.1 MPa.mm1/2 for beam size of 50x100x350 mm; 148.2, 115.8 and 108.8 MPa.mm1/2 for beam size of 50x150x500 mm; 230.9, 183.1 and 157.9 MPa.mm1/2 for beam size of 50x300x950 mm; and 293.2, 248.1 and 244.3 MPa.mm1/2 for beam size of 50x450x1250 mm. Experimental results showed that decreasing hardness of coarse aggregate was found to have significant effect on the fracture toughness rather than on the compressive strength of concrete.

scholarly journals PENGARUH CANGKANG KEMIRI SEBAGAI PENGGANTI AGREGAT KASAR TERHADAP SIFAT MEKANIK BETON (EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE)

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete

scholarly journals PENGARUH CAMPURAN ABU SEKAM PADI DAN ABU ARANG TEMPURUNG SEBAGAI PENGGANTI SEBAGIAN AGREGAT HALUS TERHADAP KUAT TEKAN BETON

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Agung Prayogi
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Coarse Aggregate ◽  
Rice Husk Ash ◽  
Fine Aggregate ◽  
Concrete Compressive Strength ◽  
Fine Aggregates ◽  
Compressive Strength Of Concrete ◽  
Average Compressive Strength ◽  
By Products

Abstract Concrete is the most widely used material throughout the world and innovations continue to be carried out to produce efficient development. Shell charcoal ash and rice husk ash are industrial by-products which have the potential to replace sand for concrete mix, especially in Indragiri Hilir. The research with the title "Effect of Mixture of Rice Husk Ash and Shell Ash Ashes as Substitute for Some Fine Aggregates Against Concrete Compressive Strength" aims to prove the effect of a mixture of shell charcoal ash and husk ash to replace some of the sand to produce maximum compressive strength. Concrete is a mixture of Portland cement, fine aggregate, coarse aggregate, and water. This research uses 5 variations of the mixture to the weight of sand, BSA 0 without a substitute mixture, BSA 1 with a mixture of 5% husk ash and 10% shell charcoal, BSA 2 with a mixture of 5% husk ash and 15% charcoal ash, BSA 3 with a mixture of 5% husk ash and 18% charcoal, BSA 4 with a mixture of 10% husk and 10% charcoal, and BSA 5 with a mixture of 13% husk ash and 10% charcoal ash. SNI method is used for the Job Mix Formula (JMF) mixture in this research. The results of the average compressive strength of concrete at 28 days for JMF of 21.05 MPa, BSA 1 of 23.68 MPa, BSA 2 of 22.23 MPa, BSA 3 of 14.39 MPa, BSA 4 of 13.34 MPa , and BSA 5 of 20.14 MPa. The conclusion drawn from the results of the BSA 1 research with a mixture of 5% husk ash and 15% charcoal ash produced the highest average compressive strength of 23.68 MPa. Abstrak Beton merupakan material paling banyak digunakan diseluruh dunia dan terus dilakukan inovasi untuk menghasilkan pembangunan yang efisien. Abu arang tempurung dan abu sekam padi merupakan hasil sampingan industri yang berpotensi sebagai pengganti pasir untuk campuran beton, khususnya di Indragiri Hilir. Penelitian dengan judul “Pengaruh Campuran Abu Sekam Padi dan Abu Arang Tempurung Sebagai Pengganti Sebagian Agregat Halus Terhadap Kuat Tekan Beton” ini bertujuan membuktikan adanya pengaruh campuran abu arang tempurung dan abu sekam untuk mengganti sebagian pasir hingga menghasilkan kuat tekan maksimum. Beton adalah campuran antara semen portland, agregat halus, agregat kasar, dan air. Penelitian ini menggunakan 5 variasi campuran terhadap berat pasir, BSA 0 tanpa campuran pengganti, BSA 1 dengan campuran 5 % abu sekam dan 10% arang tempurung, BSA 2 dengan campuran 5% abu sekam dan 15% abu arang, BSA 3 dengan campuran 5% abu sekam dan 18% arang, BSA 4 dengan campuran 10% sekam dan 10% arang, dan BSA 5 dengan campuran 13% abu sekam dan 10% abu arang. Metode SNI digunakan untuk campuran Job Mix Formula (JMF)  pada penelitian ini. Hasil rata-rata kuat tekan beton pada umur 28 hari untuk JMF sebesar 21,05 MPa, BSA 1 sebesar 23,68 MPa, BSA 2 sebesar 22,23 MPa, BSA 3 sebesar 14,39 MPa, BSA 4 sebesar 13,34 MPa, dan BSA 5 Sebesar 20,14 MPa. Ditarik kesimpulan dari hasil penelitian BSA 1 dengan campuran 5% abu sekam dan 15% abu arang menghasilkan rata-rata kuat tekan tertinggi yaitu sebesar 23,68 MPa.  

scholarly journals Effects of Disparate Zones of Sand on the Compressive Strength of Concrete

2021 ◽  
Vol 9 (11) ◽  
pp. 1368-1375
Author(s):  
Suhaib Bakshi
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Testing Machine ◽  
Concrete Compressive Strength ◽  
Research Papers ◽  
Concrete Material ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Concrete Mix ◽  
Compressive Strength Of Concrete

Abstract: Compressive strength of concrete is the capacity of concrete to bear loads of materials or structure sans breaking or being deformed. Specimen under compression shrinks in size whilst under tension the size elongates. Compressive strength essentially gives concept about the properties of concrete. Compressive strength relies on many aspects such as water-cement ratio, strength of cement, calidad of concrete material. Specimens are tested by compression testing machine after the span of 7 or 28 days of curing. Compressive strength of the concrete is designated by the load on the area of specimen. In this research various proportions of such aggregate mixed in preparing M 30 grade and M 40 grade of Concrete mix and the effect is studied on its compressive strength . Several research papers have been assessed to analyze the compressive strength of concrete and the effect of different zones of sand on compressive strength are discussed in this paper. Keywords: Sand, Gradation, Coarse aggregate, Compressive strength

Influences of Limestone Aggregates on Concrete Strength in Pipe Piles Production

2014 ◽  
Vol 584-586 ◽  
pp. 1370-1374
Author(s):  
Yuan Hai Jiang
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Strength ◽  
Normal Pressure ◽  
Concrete Compressive Strength ◽  
Steam Curing ◽  
Coarse Aggregates ◽  
Siliceous Rocks ◽  
Pressure Steam ◽  
Autoclave Curing

Taking the limestone and siliceous rocks as coarse aggregates to mix concrete,through normal pressure steam curing and autoclave curing,the concrete compressive strength after demould and compressive strength after autoclave curing are tested.The results indicate that the concrete compressive strength increases obviously after normal pressure steam curing when taking the limestone and granite as coarse aggregates,and the strength increasing laws are basically in accordance.However,the concrete compressive strength is great different after autoclave curing when taking the limestone and granite as coarse aggregates,the concrete strength increases lower with limestone as coarse aggregate,but the concrete strength increases higher with siliceous rocks as coarse aggregate.

scholarly journals THE INFLUENCE OF RIVER AND VOLCANIC SAND AS COATINGS ON POLYPROPYLENE WASTE COARSE AGGREGATE TOWARDS CONCRETE COMPRESSIVE STRENGTH

2020 ◽  
Vol 82 (4) ◽  
Author(s):  
Gandjar Pamudji ◽  
Madsuri Satim ◽  
Mochamad Chalid ◽  
Heru Purnomo
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Coarse Aggregate ◽  
Experimental Tests ◽  
Concrete Compressive Strength ◽  
Replacement Ratio ◽  
River Sand ◽  
Aggregate Concrete ◽  
Different Types ◽  
Compressive Strength Of Concrete

One of the most important factors used to determine the compressive strength of concrete is its aggregate and matrix adhesion. This study examines the surface properties of polypropylene (PP) waste coarse aggregate (PWCA) to determine the influence of sand. The PWCA was made from the PP waste and different types of coating such as PWCA-R (river sand) and PWCA-V (volcanic sand), with experimental tests conducted on the physical properties of sand and PWCA, while the compressive strength, FESEM and density of polypropylene waste coarse aggregate concrete (PWCAC). Concrete specimens were prepared by replacing natural coarse aggregate with PWCA in percentages of 0%, 25%, 50%, 75%, and 100%, varying the water-cement ratio by 0.3 and 0.42 and using polypropylene (PP) waste coarse aggregate (PWCA-R and PWCA-V) as the coating material. The results showed that fineness modulus (F.M) and water absorption of the river sand was higher compared to volcanic sand. The PWCA-V had higher density and specific gravity compared to PWCA-R. On the other hand, water absorption of the PWCA-V was lower than PWCA-R. The PWCA concrete had density which varies from 1740 kg/m3 to 2074 kg/m3. For both, the PWCA concrete compressive strength at 28 days with a 100% replacement ratio was reduced by 43% to 55% compared to the natural coarse aggregate (NCA) concrete with 0.3 and 0.42 water-cement ratios. Also, the structural efficiency of PWCAC decreased with an increase in replacement ratio. River sand adhered to the PWCA surface resulted in a better compressive strength value compared to the volcanic sand. 

scholarly journals EFFECT OF CANDLENUT SHELL AS SUBTITUTE COARSE AGGREGATE TO THE MECHANICAL PROPERTIES OF CONCRETE

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Concrete Mixture ◽  
Construction Technology ◽  
Concrete Compressive Strength ◽  
Coarse Aggregates ◽  
Volume Weight ◽  
Compressive Strength Test

Concrete construction technology is directed to be sustainable and ecofriendly. The waste of the candlenut shell as a substitute for the coarse aggregate of concrete mixture is known that the candlenut shell has a hard texture so it may be used as a substitute for coarse aggregates in concrete. The purpose of the research was to determine the effect of Candlenut shell as a substitute of coarse aggregate on physical properties (slump test, bleeding, segregation, volume weight) and mechanical properties (compressive strength and tensile strength) of concrete using Candlenut shell as replacement material of the coarse aggregate. The variation of the research was percentage of the Candlenut shell in the concrete mixture, that was 0%, 25%, 50%, 75% and 100% to the coarse aggregate volume in the concrete mixture. Number of specimens in reseach was each 5 pieces each variation. Testing of mechanical properties of concrete (compressive strength and tensile strength) was performed at 28 days. Testing of the concrete for compressive strength test and tensile strength on age 28 days. Concrete using candlenut shell as a substitute of coarse aggregates has decreased compressive strength respectively 11.72 MPa (37.71%) for 25% candlenut shell; 15.54 MPa (50.00%) for 50% candlenut shell; 18.35 MPa (59.02%) for 75% candlenut shell; And 18,85 MPa (60,66%) for 100% candlenut shell from of the 0% candlenut shell with compressive strength of 31.08 Mpa. Concrete using for 25% candlenut shell as a substitute for coarse aggregates decreased tensile strength respectively of 0.95 MPa (28.70%) for 25% candlenut shell; 1.21 MPa (36.56%) for 50% candlenut shell; 1.27 MPa (38.37%) for 75% candlenut shell; And 1.40 MPa (42.30%) for 100% candlenut shell from of the 0% candlenut shell with the tensile strength of BN of 3.31 MPa. The decrease in the value of compressive strength and tensile strength is strongly influenced by the increasing percentage of Candlenut shells on concrete.

Experimental Study on Mix Proportion and Fundamental Properties of Recycled Concrete

2012 ◽  
Vol 598 ◽  
pp. 635-639
Author(s):  
Zhao Hua Du ◽  
Jie Wang
Keyword(s):  
Compressive Strength ◽  
Coarse Aggregate ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Replacement Ratio ◽  
Mixture Ratio ◽  
Recycled Coarse Aggregate ◽  
Fundamental Properties ◽  
Mix Proportion ◽  
Strength Tests

In this paper, the mixture ratio of recycled concrete and its fundamental mechanics properties have been researched by experiments, which include the mechanical properties of recycled aggregate, the optimum mix design of the recycled concrete, compressive strength tests on concrete specimens using the broken abandoned concrete rubbles as recycled coarse aggregate, the replacement ratios of recycled coarse aggregate by mass to the natural coarse aggregate are 0, 0.3, 0.5, 0.70 and 1.0 respectively. The influences of the replacement ratio of recycled coarse aggregate by mass to the fundamental properties of the recycled concrete such as the compressive strength,and the elastic modulus are discussed and analyzed.and the optimum replacement ratio of recycled coarse aggregate by mass is suggested. These may be references to the applications of recycled concrete in engineering.

Sign in / Sign up

Export Citation Format

Share Document