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2020-10-19ensp0183enspFuture Scope. The study could further be extended by varying and introducing more parameters like grading in coarse aggregate. Use of other cementitious material like ultra fly ash cement, pozzolana with rice husk and formation of new pervious concrete by use of old recycled pervious concrete etc. and quantify their effect on overall permeability, compressive strength and porosity.
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2020-10-19ensp0183enspFuture Scope. The study could further be extended by varying and introducing more parameters like grading in coarse aggregate. Use of other cementitious material like ultra fly ash cement, pozzolana with rice husk and formation of new pervious concrete by use of old recycled pervious concrete etc. and quantify their effect on overall permeability, compressive strength and porosity.
2011-9-30ensp0183enspBelow 6000 psi 42 MPa the properties of coarse aggregate has no effect on concrete strength S K Al-Oraimi et al. Upto 12,800 psi 90 MPa concrete fracture is controlled by transition zone. Beyond this level concrete fracture is largely controlled by aggregate strength O E Gjorv.
2020-10-19ensp0183enspCompaction of concrete increases the density of the concrete because it is the process in which air voids are removed from freshly placed concrete which makes the concrete compact and dense. The presence of air voids in concrete greatly reduces its strength .Approximately 5 of air voids can reduce the strength by 30 to 40 .
Coarse aggregates have properties such as size, shape, moisture contents, specific gravity, density etc. which affects concrete strength and durability in many ways. These effect of aggregate properties on concrete are discussed in detail. Concrete is a mixture of cementitious material, aggregate and water.
2018-11-1ensp0183enspcrete aggregate RCA on the rate of concrete compressive strength and stiffness gain with time and on the bond strength between seven-wire steel prestressing strand and concrete.
2019-10-29ensp0183enspstrength of concrete. However, there is a gap in literature for the combined effect of sand fines and watercement ratios effect on the properties of concrete. This paper seeks to address this gap in literature.
2018-8-11ensp0183enspThe effect of aggregate content on the drying shrinkage of concrete Source ... Cement content is perceived to control concrete strength. Based on this ...
The aim of this paper is to discuss the unrecognized problem of the scale effect in compressive strength tests determined for cored specimens of lightweight aggregate concrete LWAC against the background of available data on the effect for normal-weight concrete NWAC. The scale effect was analyzed taking into consideration the influence of slenderness amplambda 1.0, 1.5, 2.
2 ensp0183enspThe advantage of small aggregate in the water-ratio strength relationship may or may not be sufficient to offset the effects of its higher mixing water demand. It appears that optimum maximum size, so far as strength is concerned, will vary for different aggregates, different cement factors, different test ages and probably other conditions.
2018-5-17ensp0183enspcorners to achieve building production leading to failure in the buildings. It is therefore necessary to use alternative available local material for concrete production. The aim of this study, therefore, is to examine the use of locally available construction materials such as sawdust as substitutes for fine aggregate in concrete.
2018-8-22ensp0183enspEffect of recycled geopolymer concrete aggregate on strength development and consistence of Portland cement concretes Napoleana-Anna Chaliasou University of Bath, United Kingdom, nac32bath.ac.
2016-9-9ensp0183enspCompressive Strength of Concrete Using Sawdust as Aggregate Daniel Yaw Osei, Emmanuel Nana Jackson AbstractThis paper reports on experimental investigations on the effect of replacing sand with sawdust on the properties of concrete.
2009-5-24ensp0183ensp2. To correlate aggregate properties with those of asphalt concrete mixtures to predict the behaviorofasphalt mixes from aggregate properties. 3.1 Materials 3.1.1. Aggregates Nine sourcesofaggregate representingall quarries usedfor aggregate production wereselected. All ninesourcesareoflimestonetype.
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