aggregate (Rashid et al., 2008). Brick aggregate concrete also performs well or even better than natural aggregate concrete under high temperature (Fouad et al., 2004). All these studies justified the use of crushed brick as an alternative source of coarse aggregate in concrete. However, there is hardly any literature on use of brick aggregate ...
Sep 03, 2014· When we design mix the concrete, its target strength is much less than the compressive strength of the aggregates used in the formation. It can also be clearly seen in the mix design procedure that greater the maximum size of coarse aggregate use...
Jul 02, 2016· Fine aggregates are really sands, that is sharp sand, not the sort that you find on the beach which has rounded edges. Coarse aggregates can be used in more than one grade size. Again the more angular the aggregates to aid bonding with the liquid ...
This paper deals with the possibility of using fresh concrete waste as recycled aggregates in concrete. An experimental program based on two variables (proportion of fine aggregates replacement and proportion of coarse aggregates replacement) was implemented. The proportions of replacement were 0%, 50%, and by mass of aggregates.
COMPRESSIVE STRENGTH OF CONCRETE USING LATERITIC SAND AND QUARRY DUST AS FINE AGGREGATE Joseph O. Ukpata1, Maurice E. Ephraim2 and Godwin A. Akeke1 1Department of Civil Engineering, Cross River University of Technology, Calabar, Nigeria 2Department of Civil Engineering, Rivers State University of Science and Technology, Port Harcourt, Nigeria
This study evaluated the effect of fully replacing natural aggregate (NA) with several sources of recycled concrete aggregate (RCA) on the various mechanical properties of multiple concrete mixtures having equivalent compressive strength and slump (compressive strengths between 40 and 60 MPa and slumps between 75 and 125 mm).
Compressive strength of concrete produced with the recycled aggregate was in the range of 41 to 52 MPa. Mix 4 had the lowest compressive strength. This was expected due to the nature of grade 4, which has poor particle distribution and contains different impurities. Mix 1,4 and Mix 1,2,5 showed similar compressive strength to that of the control.
May 29, 2017· Expanded Polystyrene (EPS) concrete : (also it known as EPScrete, EPS concrete or lightweight concrete) is a form of concrete known for its light weight made from cement and EPS (Expanded Polystyrene). It is a popular material for use in environme...
STUDY ON STRENGTH OF CONCRETE USING VARIOUS COARSE AGGREGATES, PART-1 CHAPTER – 1. ... It has a high compressive strength. (b) It is free from corrosion and there is no appreciable effect of atmospheric agents on it. ... It hardens with age and the process of hardening continues for a long time after Crushed Stone as Coarse Aggregate.
Mar 23, 2015· In general for strength upto 200 kg/cm 2 aggregates upto 40 mm may be used and for strength above 300 kg/cm 2 aggregate upto 20 mm may be used. Conditions That Decide Maximum Size of Coarse Aggregate to be Used in Concrete. The following conditions decide the maximum size of coarse aggregate to be used in concrete
compressive strength of concrete. • Uncrushed coarse aggregate makes a concrete with a lower strength than one with crushed coarse aggregate. • Factors such as – the type of fine aggregate, – the maximum size of aggregate, – the overall grading, and – particle shape and surface texture, have little direct effect on the compressive ...
in compressive strength of laterized concrete incorporating palm kernel shell as partial replacement of coarse aggregate to obtain it`s effective utilization and proper documentation.
Fly Ash and Recycled Coarse Aggregate in Concrete: New Era for Construction Industries - A Literature Review Prof. Chetna M.Vyas1, Prof. Jayeshkumar Pitroda2 1Assistant Professor and Research Scholar, Civil Engineering Department, A.D. Patel …
coarse aggregates in high strength concrete Given the critical role that the interfacial transition plays in high-strength concrete, the mechanical properties of coarse aggregate will have a more pronounced effect than they would in conventional-strength concrete.
This has necessitated research into alternative materials of construction and analyzing flexural and compressive strength characteristics of . ... CONCRETE WITH CRUSHED COCONUT SHELL AS COARSE AGGREGATE. A. Mercy Temitope. ... CONCRETE WITH CRUSHED COCONUT SHELL AS COARSE AGGREGATE.
aggregate characteristic. The second stage was, by using the three aggregate types (crushed aggregate, uncrushed river gravel aggregate and sand sieved gravel aggregate) were used to produce normal weight concrete and comparison was made with three different coarse aggregate mix of concrete. The performance of concretes was then assessed in
Compressive strength of hardened concretes made from recycled concrete coarse aggregates was studied as a function Of the compressive strength of original concretes from which the coarse aggregates were derived Also studied were properties of fresh concretes made from recycled aggregates, gradings of crusher products, properties of recycled ...
aggregate as well as for the recycled aggregate. The use of recycled aggregate generally increases the drying shrinkage creep & porosity to water & decreases the compression strength of concrete compared to that of natural aggregate concrete. It is nearly 10-30% as per replacement of aggregate.
Abstract. This research was conducted with the use of recycled aggregate as modification. In terms of the use of recycled aggregate, the percentage of recycled aggregate should be determined because the strength of concrete would not be obtained by the high percentage of recycled aggregate.The scope of study is about comparison between recycle coarse aggregate and natural aggregate in terms of ...
In this paper attempt has been made to use local used bricks from vicinity of Nawabshah, Pakistan, as coarse aggregate. Concrete cubes made with local recycled bricks are cast and tested for overall weight of concrete, moisture content, dynamic modulus of elasticity and compressive strength (nondestructive and destructive methods).
During this time, compressive strength of A-1 coarse aggregates ranges between 22 MPa to 41.5 MPa and compressive strength of A-2 coarse aggregates ranges between 19.5 MPa to 38.5 MPa. Highest compressive strength was recorded for 'A-1 with Group-V' series which had w/c ratio of 0.38 with impact crushed coarse aggregate.
A Critical Review on Self Compacting Concrete Using Recycled Coarse Aggregate Prof. Y.V. Akbari 1, Prof Dr. K.B. Parikh2, Tejas H. Raviya3 ... results indicate that the compressive strength, flexural strength and split tensile strength of the SCC with ... usage of coarse recycled aggregate obtained from crushed concrete for making of self ...
structural concrete. Keywords: compressive strength, coarse aggregate, concrete, natural aggregate, recycled concrete aggregate. Introduction The growing need for infrastructural development has placed a huge demand on coarse aggregates, which make up about three-quarters of concrete, the most used man-made material in construction [1].
According to Fig. 2 in the paper, the author stated that for a given water/cement ratio, 28 days ' compressive strength of concrete containing crushed brick as the coarse aggregate is correlated to brick unit compressive strength. Namely, the stronger the original brick, the stronger the compressive strength of the concrete made with ...
Jun 22, 2011· Abstract. The effect of recycled coarse aggregate on concrete compressive strength was investigated based on the concrete skeleton theory. For this purpose, 30 mix proportions of concrete with target cube compressive strength ranging from 20 to 60 MPa were cast with normal coarse aggregate and recycled coarse aggregate from different strength parent concretes.
The compressive aggregate strength is an important factor in the selection of aggregate. When determining the strength of normal concrete, most concrete aggregates are several times stronger than the other components in concrete and therefore not a factor in the strength of normal strength concrete.
concrete for compressive strength, so there are utilization of demolished concrete in replaced by natural coarse aggregate. Recycled coarse aggregate obtained from crushed concrete rubble, instead of being stored, can be reused in building industry.
This is useful in reducing the environmental problems created by dumping these materials. 2. The use of concrete rubbles as coarse aggregate in concrete mixes resulted in a decrease in the strength depending on the replacement ratio and the grade of concrete. Such an effect can be cared for by reducing the w/c ratio 3.
This chapter has been prepared with the hope that its readers will become interested in lightweight concrete (LWC). Therefore, after a brief background of lightweight concrete, different types of LWC will be introduced and then LWC made of lightweight aggregates (LWA) will be specifically discussed. Compressive strength and density of LWC are the main points of interest in this chapter.
insulating concrete density, thermal conductivity and compressive strength ranges normally associated with each class of concrete are summarized in Table 6.1. TABLE 6.1—Lightweight Aggregate Concrete Classified According to Use and Physical Properties according to ASTM C 330 and C 332. Class of Lightweight Aggregate Concrete