scholarly journals Mix Proportioning of Self Compacting Concrete Using Limestone Powder

2020 ◽  
Vol 23 (2) ◽  
pp. 648-657
Author(s):  
Avraz Zainaldeen ◽  
◽  
Ghanim Qoja
Keyword(s):  
Limestone Powder ◽  
Self Compacting Concrete ◽  
Mix Proportioning

Mechanical Performance of Steam-Cured Self-Compacting Concrete Incorporating Silica Fume and Limestone Powder

2021 ◽  
Vol 56 ◽  
pp. 111-122
Author(s):  
Youcef Ghernouti ◽  
Bahia Rabehi ◽  
Sabria Malika Mansour
Keyword(s):  
Heat Treatment ◽  
Silica Fume ◽  
Mechanical Performance ◽  
Limestone Powder ◽  
Maximum Temperature ◽  
Self Compacting Concrete ◽  
Curing Period ◽  
Heat Treated ◽  
Binder Ratio ◽  
Mechanical Strengths

In this paper, influence of heat treatment on evolution of mechanical strengths at early age, less than 24hours of self-compacting concretes containing limestone powder and silica fume as fine materials was investigated experimentally. Two compositions of self-compacting concrete have been studied; the first is elaborated with silica fume addition and the second with limestone powder, each mixture were prepared with a constant water/binder ratio of 0.39. Concrete samples were either cured in water at (23±1°C), or steam cured at 65°C maximum temperature over six hours (6h) curing period. Tests of mechanical strengths were performed on specimens cooled down slowly to room temperature after heating.The obtained results show that all self-compacting mixtures exhibited satisfying fresh properties and check EFNARC specifications of self-compacting concrete (slump flow diameter higher than 650mm, L-box ratio higher than 80% and sieve stability less than 17%).Mechanical strengths of concrete containing limestone addition are slightly lower than those of concrete based on silica fume at all ages. Moreover, heat treatment generates an improvement of compressive and flexural strength. Interesting compressive strengths are obtained. At 24 hours, after heat treatment, the strengths are already greater than 35 MPa. The values ​​are 37 MPa and 40 MPa for self-compacting concrete containing limestone powder and silica fume respectively compared to 40 MPa and 46 MPa obtained at 7 days for the corresponding non-heat treated concretes. Compressive strength gain of SCCs mixtures with limestone powder and with silica fume, undergoing heat treatment at the age of 24hours is 85% and 75% respectively compared to SCCs mixtures cured in water.

scholarly journals Effect of limestone powder on self-compacting concrete

2021 ◽  
Vol 9 (2) ◽  
pp. 71-78
Author(s):  
O. M. A. Daoud ◽  
O. S. Mahgoub
Keyword(s):  
Construction Material ◽  
Control Sample ◽  
Drying Shrinkage ◽  
Heat Of Hydration ◽  
Limestone Powder ◽  
Partial Replacement ◽  
Self Compacting Concrete ◽  
Technical Problems ◽  
Cement Replacement ◽  
Partial Cement Replacement

Self-compacting concrete (SCC) is an innovative construction material in the construction industry. It is a highly fluid and stable concrete that flows under its own weight and fills completely the formwork. The SCC requires high powder content (mainly of cement) up to 600kg/ to achieve its properties. This will be problematic because increasing the cement content is not feasible, and may cause high cost and some other technical problems such as higher heat of hydration and higher drying shrinkage. This paper investigates the effect of limestone powder (LSP) on fresh and hardened properties of SCC due to the use of LSP as a partial cement replacement. For comparison, a control sample of concrete was prepared without LSP to compare it with the various samples containing different percentages of LSP as a partial replacement of cement. Four mixes with a constant amount of (superplasticizer, sand, coarse aggregate, and water) at various replacement levels of 0%, 10%, 20% and 30% from the cement weight were prepared. The experimental results show that the LSP can be effectively used as a partial cement replacement on SCC to reduced cost and enhanced the performance of SCC in fresh and hardened stages.  

A REVIEW ON PERFORMANCE OF WASTE MATERIALS IN SELF COMPACTING CONCRETE (SCC)

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Isham Ismail ◽  
Norwati Jamaluddin ◽  
Shahiron Shahidan
Keyword(s):  
Building Materials ◽  
Recycled Aggregate ◽  
Limestone Powder ◽  
Self Compacting Concrete ◽  
Granulated Blast Furnace Slag ◽  
Materials Research ◽  
Alternative Material ◽  
Hardened State ◽  
Furnace Slag ◽  
Recycled Material

Self-compacting concrete (SCC) was first developed in late 80’s inJapan. SCC is well known for its self-consolidation and able to occupy spaces in the formwork without any vibration and become new interesting topic in Construction and Building Materials Research. There were various SCC researches that have been carried out inTurkey,Malaysia,Thailand,Iran,United Kingdom,Algeria, and India.The aim of this review is to summaries the alternative material used in the mix design from 2009 to 2015 through available literature. It hascommon materials such as Limestone Powder (LP), Fly Ash (FA), Silica Fume and Granulated Blast Furnace Slag (GBFS). While there are many alternative or recycled material can be used in producing SCC. This review only focus on waste material fromMarble Powder (MP), Dolomite Powder (DP), Crump Rubber (CR), Recycled Aggregate (RA) and Rise Husk Ash (RHA).Each type of materialshassimilarity effect in fresh and hardened state of SCC. Therefore, this paper will provide significant and useful information to those new to SCC and fellow researchers for future studies on SCC. 

The Effect of Viscous Materials Making on Self-Compacting Concrete

2013 ◽  
Vol 357-360 ◽  
pp. 1395-1398
Author(s):  
Wei Cheng ◽  
Rui Feng Li ◽  
Gu Hua Li ◽  
Hai Peng Gu
Keyword(s):  
Silica Fume ◽  
Current Trend ◽  
Limestone Powder ◽  
Self Compacting Concrete

Self-compacting concrete(SCC) is the current trend of new concrete.A variety of materials have been added in it on the purpose of changing the properties of SCC[1].In this paper,three viscous materials of limestone powder, silica fume and metakaolin have been added in SCC to change self-compactability and strength.

Research on the Working Performance of Self-Compacting Concrete at Different Substitution Rates of Iron-Tailings

2014 ◽  
Vol 1065-1069 ◽  
pp. 1930-1933
Author(s):  
Pei Xiang He ◽  
Bing Liu ◽  
Sheng Hu
Keyword(s):  
Ring Test ◽  
Self Compacting Concrete ◽  
Natural Sand ◽  
Substitution Rates ◽  
Mix Proportioning ◽  
Slump Flow ◽  
Flow Test ◽  
Reasonable Range ◽  
The Common ◽  
Working Performance

In this paper, iron-tailings was substituted for natural sand in self-compacting concrete(SCC). Iron-tailings SCC mix proportioning design at different substitution rates were made. Slump,slump-flow, the time T500(S) of the slump-flow reaching 500mm, J-ring test, U-flow test were used to evaluate the iron-tailings SCC mixture working performances at different substitution rates, which contrast to the common SCC working performances. Through the experimental results and their variation regulations, taking the single working performance into consideration,a reasonable range about the substitution rate of iron-tailings is obtained.

scholarly journals The use of non-destructive tests to estimate Self-compacting concrete compressive strength

2018 ◽  
Vol 149 ◽  
pp. 01036
Author(s):  
Boukhelkhal Djamila ◽  
Guendouz Mohamed
Keyword(s):  
Compressive Strength ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Mineral Admixture ◽  
Limestone Powder ◽  
Mineral Admixtures ◽  
Self Compacting Concrete ◽  
Correlation Relationship ◽  
Granulated Slag

Until now, there are few studies on the effect of mineral admixtures on correlation between compressive strength and ultrasonic pulse velocity for concrete. The aim of this work is to study the effect of mineral admixture available in Algeria such as limestone powder, granulated slag and natural pozzolana on the correlation between compressive strength and corresponding ultrasonic pulse velocity for self-compacting concrete (SCC). Compressive strength and ultrasonic pulse velocity (UPV) were determined for four different SCC (with and without mineral admixture) at the 3, 7, 28 and 90 day curing period. The results of this study showed that it is possible to develop a good correlation relationship between the compressive strength and the corresponding ultrasonic pulse velocity for all SCC studied in this research and all the relationships had exponential form. However, constants were different for each mineral admixture type; where, the best correlation was found in the case of SCC with granulated slag (R2 = 0.85). Unlike the SCC with pozzolana, which have the lowest correlation coefficient (R2 = 0.69).

EFFECTS OF BAMBOO FIBERS AND LIMESTONE POWDER ON FRESH PROPERTIES OF SELF-COMPACTING CONCRETE

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Anthony Nkem Ede ◽  
Obatarhie Oshogbunu ◽  
Oluwarotimi Michael Olofinnade ◽  
Kayode Joshua Jolayemi ◽  
Solomon Olakunle Oyebisi ◽  
...  
Keyword(s):  
Coarse Aggregate ◽  
Particle System ◽  
Limestone Powder ◽  
Water Quantity ◽  
Cement Particle ◽  
Fresh Properties ◽  
Self Compacting Concrete ◽  
Slump Flow ◽  
Flow Test ◽  
Bamboo Fibers

Self-compacting concrete (SCC) flows through densely steel reinforced elements and consolidates under self-weight without need for vibration or compaction. This helps in complex and densely reinforced structures. The integration of fibers and fillers in concrete improves its general properties. The addition of fibers in particular can regulate the flow and workability of the concrete; hence, the high workable nature of SCC can be an ideal mix for the incorporation of fibers. This research investigates the effect of bamboo fibers and limestone powder on the fresh properties of self-compacting concrete. Bamboo fibers of an aspect ratio of 50 and varied volumes of 0.25%, 0.5%, 0.75% and 1% were adopted for this research. The workability of the mix was assessed by slump flow test and V-funnel test. For fiber volumes of 0.25%, 0.5%, 0.75%, it was observed that the coarse aggregate was evenly distributed across the spread, indicating good viscosity and stability of the mix. The presence of 10% percent limestone powder improved the workability of the concrete mix. This can be attributed to filler properties of limestone powder, which, affecting the cement particle system, changed the ordinary distance between them and modified the water quantity available for the hydration process. These results proved that the bamboo fiber and limestone powder can be sustainably adopted to regulate the flow-ability of SCC without compromising desired properties.

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