Abstract
Aggregates play important role in concrete; it serves as Structural fillers which are used in concrete production. Aggregate sizes, types and gradation are the most important factor when selecting aggregate. This study examines incorporating different sizes and types of coarse aggregate. Testing rheology and strength of self-compacting concrete mixes at varying sizes and different types of coarse aggregate. The various aggregate sizes used in the Various mixes are 10, 12.5 and 20mm, the types of aggregate used are granite, gravel and ceramic tiles and superplasticizer used is Conplast SP 430 with water cement ratio of 0.45. slump flow test, T50, L-box and V-funnel test were carried out on the various mix to determine the fresh properties of the concrete mix. The mechanical properties (compressive, flexural and split tensile strength test) were conducted on the mixes at different curing age (7, 21 and 28 days). The aggregate size 10mm and granite types had the highest slump flow for the fresh test. It was observed from the mechanical test 10mm and 12.5mm granite size had a higher strength than gravel and ceramic tiles.
Highlights
Self-compacting concrete (SCC) is a highly workable concrete which was introduced by a Japan researcher in the late 1980’s
The various aggregate sizes used in the Various mixes are 10, 12.5 and 20mm, the types of aggregate used are granite, gravel and ceramic tiles and superplasticizer used is Conplast SP 430 with water cement ratio of 0.45. slump flow test, T50, L-box and V-funnel test were carried out on the various mix to determine the fresh properties of the concrete mix
He reported that the beam column joint can be prepared using 20 mm and 16 mm of coarse aggregate sizes and 10 mm and 8 mm size can be used in self-compacting concrete. [3] carried out an experiment on the properties of SCC with different
Summary
Self-compacting concrete (SCC) is a highly workable concrete which was introduced by a Japan researcher in the late 1980’s. [2] presented anchorage performance at highly congested regions of reinforcement mostly beam to column joint area by investigating the effect of aggregate size on self-compacting concrete and normal concrete tested by axial tensile loading. [6] used statistical analysis to determine the dataset on predictive compressive strength models of SCC They concluded that water cement ratio, aggregate combination, superplasticizer and binder combination are variables that affect compressive strength for 7, 28 and 90 days. 26-48 MPa strength was achieved by the SCC mix at 28 days and economical SCC mixes was successfully developed by high use of class F fly ash This present study will determined the effect of various type and size of aggregate on SCC. The superplasticizer used is conplast SP430 and it gotten from a pure-chem shop in Ota
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