Dec 01, 2020 When exposed to external forces, vibration, compaction, behaves as a self-compacting mixture. Addition of 200 kg/m 3 of granite dust into concrete mixtures increases slump from 1112 cm up to 1516 cm, but the increase in the amount of which up to 300 kg/m 3 slightly reduces slump.
The experiments were conducted and it was found that concrete with coarse aggregate size 20mm had the highest compressive strength for any mix ratio. But the mix ratio 11.53 produced the highest compressive strength and density. Keywords aggregate size, concrete workability, compressive strength, granite chippings, concrete properties.
Nov 21, 2008 Marble aggregate and GBFS-based concrete specimens (MC2) showed considerably higher resistance to chloride and sulphate attack than all the others. The results indicate that the addition of marble and granite into concrete reduces the chloride penetration depths by about 70%.
The Effect of AggregateProperties on Concrete. Concrete is a mixture of cementious material, aggregate, and water. Aggregate is commonly considered inert filler, which accounts for 60 to80 percent of the volume and 70 to 85 percent of the weight of concrete. Although aggregate is considered inert filler, it is a necessary componentthat defines the concretes thermal and elastic properties
Sep 01, 2016 The concrete mix with granite powder (GP) in concrete showed good workability and had slump values similar to those of normal concrete mixes. The ingredients were easy to mix, pour, transport, finish and demold. The compressive strength of concrete increased with the addition of granite powder (GP) as partial replacement of sand.
The objective of this study is to evaluate the effects of aggregate shape on volumetric properties of asphaltic concrete mixtures. The aggregate gradation of AC14 was prepared using granite ...
Aggregates for Concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm (0.2 in.) and generally between 9.5 mm and 37.5 mm (3 8 in. and 11 2 in.). Some natural aggregate deposits, called pit-run gravel, consist of gravel and sand that can be readily used in concrete after minimal processing. Natural ...
There is much controversy concerning the effects of coarse aggregate size on concrete, principally about the effects on fracture energy. Some research (Strange and Bryant 1979, Nallathambi, Karihaloo, and Heaton 1984) has shown that there is an increase in fracture toughness with an increase in aggregate size. However, Gettu and
Bonding between Aggregates and Cement Pastes in Concrete 354 Fig. 1 Stress-strain relations for cement paste, aggregate and concrete 7. 2.2 Preparation of Specimens Aggregate cubes 100 mm 100 mm 100 mm of limestone and granite were prepared for pull a part test. A 20 20 cross section aggregate prisms were cut
Keywords aggregate size, concrete workability, compressive strength, granite chippings, concrete properties. Introduction . Concrete is a miure oxt f water, cement or binder and aggregates and is a commonly used material for construction. (Barritt, 1984). The strength of concrete depends on aggregate type, size and
2.1.3. Coarse Aggregate Broken granite stones were used as a coarse aggregate in concrete. Size of the coarse aggregate used in the investigation was 10 -20 mm. The specific gravity of the coarse aggregate was found to be 2.68. 2.1.4. Water Water is an important ingredient of the concrete as it actually participates in the chemical reaction ...
Jan 01, 2018 Title Thermal Effect on Micro Properties of Granite Aggregate in Concrete Author(s) Guruprasad Y. K., Ananth Ramaswamy, and K. Sajeev Publication Materials Journal Volume 115 Issue 1 Appears on pages(s) 77-88 Keywords coarse aggregate concrete (high-temperature exposure) melt identification petrography and microanalysis strength reduction thermodynamic modeling
Aggregates constitute 60 80% of total concrete constituents. The characteristics of concrete may be affected by the sources from which the aggregate was obtained. The effects of granite sourced from four selected locations within Ogbomoso, Nigeria on the fresh and hardened properties of concrete were investigated. The granites were obtained from Asafa (80 4.681 N and 40 20.781 E), Ola ...
quarry dust, gravel and granite while sizes involved are 20 and 28 mm of ... aggregates from sand, gravel, quarry dust and granite, in a concrete mix ratio 124 , with a ..... Tahir, C. and Khaled, M. (1999), Effects of Crushed Stone Dust on.
Dr. T. Felixkala Effect of granite powder on strength properties of concrete (Mar 2010), Examines using granite powder replacement of sand and partial replacement of cement with fly ash, fumes and slag in concrete. The percentage of granite powder added by weight was 0,25,50 75 and 100 as a replacement of sand used in
In the preparation of concrete for each tonne of cement the building industry needs about six to seven times more tonnes of sand and gravel USGS 2013b Thus the world s use of aggregates for concrete can be estimated at 25.9 billion to 29.6 billion tonnes a year for 2012 alone Get Price Environmental effects of irregular extracting of
Feb 15, 2019 Geologically aggregates may be obtained from basalt, granite, limestone, quartzite, gabbro or schist rock etc. Main resources are igneous (granite or basalt) or sedimentary (limestone) rock. Generally all are suitable for concrete depending on their degree of weathering density and shape.
The effects of water ponding temperatures at 26 o C and 38 o C with 0.4 waterto-binder (w/b) ratios on mechanical properties, plastic and drying shrinkage strain of the concrete were studied and compared with natural fine aggregate concrete. The test results obtained indicate that granite powder of marginal quantity as partial sand replacement ...
aggregate, Coarse aggregate Granite fines. 1. INTRODUCTION Concrete is the most popular building material in the world. Construction Industry contributes huge amounts to Indian economy and concrete is one of the best materials used in construction. The ingredients used in it include Cement, Sand, Gravel and Water. Now-a-days sand is not
Aug 02, 2018 The use of waste material as aggregates in civil engineering applications is beneficial and is becoming increasingly desirable because it reduces the environmental impact and economic cost of quarrying operations, processing, and transportation. Thus, this study focused on establishing the effect of crushed tile and oil palm fibre additive on the compressive and flexural strength of concrete.
Nov 30, 2019 This may be attributed to the compensating effect of granite aggregates in opposition to damaging effect of water. Also, by using the granite aggregates in the mixture, the compressive strengths of the samples were standard and almost identical in
granite, 31.83N/mm2 flexural strength for basalt while 27.97N/mm2 for granite. From the above results, it can be deduced that basalt has higher strength properties than granite. more suitable for coarse Therefore, aggregate in achieving higher strength with some quantity of other composition of the concrete mix when compared to granite. 1.
granite rock) are the most commonly used coarse aggregate in concrete production. Granite is more expensive, while gravel is much more affordable. The economic condition makes gravel more attractive for building development to most low to middle income earners. The special properties of the fresh
affect concrete mechanical properties, namely aggregate type and temperature, the same proportions as limestone concrete were used for the granite and quartzite concretes. The amounts of materials used in the control mix to obtain 1 m3 of concrete are shown in Table 3 (which were identical in proportion for the other concretes).
granite aggregate is 35Mpa 7. The concrete strength of combine aggregate 10mm and 5mm size can achieve 160Mpa at the age of 28 days 3. The compressive strength of concrete cubes aggregate size 20mm and 10mm on the 7th days are 25.5Mpa and 16.9Mpa. Comparison percentage is 47.6%. Density concrete aggregate size 20mm and 10mm are 2368
Key words coarse aggregate, granite waste. INTRODUCTION Concrete is a composite material composed of aggregate bonded together with the fluid cement which hardens over time. Most use of the term concrete refers to Portland cement concrete or to concrete made with other hydraulic cements. In Portland cement concrete
Apr 22, 2020 Caution Avoid aggregates containing substances that can stain the concrete, such as iron oxides and iron pyrites. Aggregate size and shape vary, too. The size, which can range anywhere from 3/8 inch to 2 inches or more in diameter, largely determines the depth of exposure. Aggregate shape affects the surface pattern and texture.
properties. Aggregate consists of large chunks of material in a concrete mix, generally a coarse gravel or crushed rocks such as limestone, or granite, along with finer materials such as sand. Cement, most commonly Portland cement, is associated with the general term concrete. A range of materials can be used as the cement in concrete.
To compare the conventional concrete results and Granite Powder concrete results. II. LITERATURE SURVEY Divakar Y., et al., (2012) Highlighted the compressive strength has increased by 22% with the use of 35% replacement of fine aggregates with granite fines.
Normal weight aggregate produces concrete with unit loads ranging from 23 to 26 KN/m3 with a specific gravity between 2.5 and 2.7. It has crushing strength at 28 days between 15 to 40 MPa. The commonly used aggregates i.e. sand, gravel, and crushed rocks such as granite, basalt, quartz, sandstone, and limestone. 3.Heavy weight Aggregate
May 02, 2010 An experimental study on high-performance concrete made with granite powder as fine aggregate and partial replacement of cement with admixtures subjected to water curing was carried out. The percentage of granite powder added by weight was 0, 25, 50, 75 and 100% as a replacement of the sand used in concrete and cement was partially replaced ...
Effect of aggregate type on Compressive strength of concrete. different types of coarse aggregate on the compressive strength of ... gravel. Concrete containing crushed granite shows ...
In this paper the effect of limestone and granite aggregate on drying shrinkage of a concrete is investigated. Mixes containing limestone and granite with different Dmax and cement paste volume were tested. A two level, full factorial experiment with three independent factors was conducted which allowed not only to determine the influence of ...
Aug 02, 2018 conventional concrete. Table 1. Properties of granite and crushed ceramic tiles aggregates 24 PROPERTIES GRANITE TILES Specific gravity 2.67 2.40 Fineness Modulus 3.81 5.91 Impact Value (%) 38 25 Crushing value (%) 12.86 14.33 Water absorption (%) 0.25 4.5 Dry compacted density (kg/m3) 1618 1325 2.1.
Feb 20, 2015 In Malaysia, concerns about the depletion of granite aggregates in the future and the availability of laterite aggregates locally have incentivized researchers to integrate laterite aggregate into the production of concrete. Studies found that the use of 20 to 30% of laterite aggregates, as partial replacement for coarse aggregates, results in concrete with the targeted strength. However, the ...