Effect of the mix design on the robustness of fresh self-compacting concrete

2017 ◽  
Vol 82 ◽  
pp. 190-201 ◽  
Author(s):  
Farid Van Der Vurst ◽  
Steffen Grünewald ◽  
Dimitri Feys ◽  
Karel Lesage ◽  
Lucie Vandewalle ◽  
...  
Keyword(s):  
Mix Design ◽  
Self Compacting Concrete

Self Compacting Concrete Structures: A Techno-Economic Analysis

2017 ◽  
Vol 21 ◽  
pp. 624-631 ◽  
Author(s):  
Nicolae Cazacu ◽  
Aurelia Bradu ◽  
Nicolae Florea
Keyword(s):  
Mechanical Characteristics ◽  
Concrete Surface ◽  
Mix Design ◽  
Building Industry ◽  
Skilled Workers ◽  
Self Compacting Concrete ◽  
Construction Time ◽  
Placement Method ◽  
Global Cost

The concept of self-compacting concrete (SCC) was performed in late 1980 by Japanese researchers as a solution for the lack of skilled workers and decreasing quality in building industry. The high fluidity of SCC allows flowing under its own weight, filling completely the formwork without any vibration or material segregation, providing a higher quality of the concrete surface. Since its discovery, a large number of researcher studied its rheological properties, adjusted mix design methods and analysed mechanical characteristics. The placement method for conventionally concrete is no more valid for SCC, as mixture behaviour changed substantially. This aspect was less examined and the published material is inconsistent, even though it plays an essential role in the assessment of the global cost of a building. The aim of this study is to investigate materials cost, the labour requirements, formwork demands, methods of placement and construction time for building a structure using SCC and vibrated concrete and compare the results.

Influence of Asphalt Dust Waste Material in Mix Design for Self-Compacting Concrete

2017 ◽  
Vol 730 ◽  
pp. 473-478 ◽  
Author(s):  
Shahiron Shahidan ◽  
Isham Ismail ◽  
Muhammad Shafiq Syazwan Zulkarnaian ◽  
Norashidah Abd Rahman
Keyword(s):  
Mix Design ◽  
Waste Materials ◽  
Gravity Effect ◽  
Limited Information ◽  
Self Compacting Concrete ◽  
Green Concrete ◽  
Vibration Process ◽  
Binder Ratio ◽  
Alternative Solutions ◽  
Water Binder Ratio

Various studies on concrete have been conducted to utilize waste materials from different industries to produce sustainable green concrete. Adding asphalt dust waste (ADW) as a filler in the development of self-compacting concrete (SCC) is one of the alternative solutions. SCC is a high workability concrete that can flow under its own weight without vibration process and flows with gravity effect. However, there is limited information on the effect of ADW in the development of SCC. Therefore, this study is conducted to investigate the use of ADW in SCC in order to maximize its benefits in improving the workability of SCC. This experimental study was done to examine the effects of water binder ratio and amount of superplasticizer (SP) on the rheological and mechanical properties of the developed SCC. The results showed that the increase of w/b ratio and amount of SP will also improve the workability of SCC. It was found that the suitable percentages of ADW as a concrete filler are between 30% to 50%. In conclusion, the results showed that the optimum percentage of ADW in SCC mix design was 40% with a w/b ratio of 0.3 and 2% SP which yielded a compressive strength of 40.8 MPa.

A method for mix-design of fiber-reinforced self-compacting concrete

2007 ◽  
Vol 37 (6) ◽  
pp. 957-971 ◽  
Author(s):  
Liberato Ferrara ◽  
Yon-Dong Park ◽  
Surendra P. Shah
Keyword(s):  
Mix Design ◽  
Fiber Reinforced ◽  
Self Compacting Concrete

Experimental Study on the Workability of Self-Compacting Granite and Unwashed Gravel Concrete

2017 ◽  
Vol 31 ◽  
pp. 69-76
Author(s):  
Gideon O. Bamigboye ◽  
David O. Olukanni ◽  
Adeola A. Adedeji ◽  
Kayode J. Jolayemi
Keyword(s):  
Experimental Study ◽  
Coarse Aggregate ◽  
Mix Design ◽  
Fine Aggregate ◽  
Self Compacting Concrete ◽  
Consistency Test ◽  
Coarse Aggregates ◽  
Slump Flow ◽  
Filling Ability ◽  
Passing Ability

This study deals mainly with the mix proportions using granite and unwashed gravel as coarse aggregate for self-compacting concrete (SCC) and its workability, by considering the water absorption of unwashed gravel aggregate. Mix proportions for SCC were designed with constant cement and fine aggregate while coarse aggregates content of granite-unwashed gravel combination were varied in the proportion 100%, 90%/10%, 80%/20%, 70%/30%, 60%/40%, 50% /50%, represented by SCC1, SCC2, SCC3, SCC4, SCC5 and SCC6. 100% granite (SCC1) serves as the control. The workability of the samples was quantitatively evaluated by slump flow, T500, L-box, V- funnel and sieve segregation tests. Based on the experimental results, a detailed analysis was conducted. It was found that granite and unwashed gravel with SCC1, SCC2 and SCC3 according to EFNARC (2002) standard have good deformability, fluidity and filling ability, which all passed consistency test. SCC1, SCC2 and SCC3 have good passing ability while all mixes were in the limit prescribed by EFNARC (2002). It can be concluded that the mix design for varying granite-unwashed gravel combination for SCC presented in this study satisfy various requirements for workability hence, this can be adopted for practical concrete structures.

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