2018.5.1 Durability is affected more severely than strength in recycled concrete (RAC). The durability of concrete made with RA decreases with increased RA used in the
Read More
2015.7.7 Properties of concrete made with crushed concrete as coarse aggregate Authors: R. Sri Ravindrarajah , C. T. Tam Source: Magazine of Concrete Research,
Read More
Concrete Durability. Concrete durability is defined according to Concrete Terminology by American Concrete Institute (ACI) [1], as “the ability of concrete to resist weathering
Read More
2014.11.9 The aim of this paper is to evaluate the influence of the crushing process used to obtain recycled concrete aggregates on the performance of concrete made with
Read More
2015.9.30 The objective of this experimental work was to study the durability of reinforced concrete made with crushed brick as aggregate. For this purpose, a
Read More
2009.2.1 Properties include strength, water, gas and chloride-ion permeability and capillary water absorption. Four different cement types were used while maintaining a constant water/cement ratio.
Read More
2020.8.1 This research investigates the effect of using recycled concrete aggregate (RCA) as a partial replacement of natural aggregate (NA) on the mechanical and durability-related properties of a cement
Read More
2009.2.1 1. Introduction Recently, there has been an increasing interest in using crushed sand from limestone quarries in concrete construction to overcome inherent
Read More
2017.11.22 The durability performance of the resultant concrete was analysed by exposing the concrete to aggressive chloride environments. The results indicate that the
Read More
2020.12.1 1. Introduction. One of the most important factors shaping the strength and deformation properties of concrete is the microstructure and properties of the aggregate-cement paste interfacial transition zone, which is responsible for the aggregate-cement paste bond strength [1, 2].The adhesion of aggregate and cement paste causes
Read More
Recycled crushed concrete can soak up more water than new concrete - as much as 9% of its weight. While water is important for the concrete to harden, too much of it can cause problems. Too much water can make the concrete crack, weaken it, and look bad. It can also cause the concrete to expand, resulting in "popouts" where cone-shaped pieces ...
Read More
2004.7.1 A study result reveals that the concrete cubes with stone dust developed about 17% higher strength in compression, 7% more split tensile strength and 20% more flexural strength than the concrete ...
Read More
2017.7.20 durability performance of the concrete were also investigated. Concrete cubes were made using various concrete mixtures of water-binder ratios (w/b) = 0.40, 0.50, 0.60, 0.75 and binder contents = 300, 350, 400, 450 kg/m3. Concrete cube of 100 mm size were cast and cure d in water for 3, 7, or 28 days, then characterized at
Read More
2023.11.13 The durability of concrete will be affected by the shrinkage of concrete. If the cement content is exceeded, it leads to shrinkage happening in concrete. The lower cement content decreases the bondage between the concrete materials, reducing concrete strength. So using the proper amount of cement content is essential.
Read More
2021.6.1 Capillary absorption increased more significantly, from 46% to 95% for 100% fRCA concrete [105]. To improve durability, studies recommend concrete mixtures with low water-to-cement ratio, use of superplasticizers [105] and supplementary cementitious materials (SCMs) [115, 147, 155]. In low water-to-cement ratio concretes,
Read More
2020.8.1 This research investigates the effect of using recycled concrete aggregate (RCA) as a partial replacement of natural aggregate (NA) on the mechanical and durability-related properties of a cement-stabilized recycled concrete aggregate (CSR) mixture. In this case, mixtures were prepared with 0%, 40%, 70%, and 100% (by weight) RCA to replace
Read More
The effect of concrete strength on the amount of cement replacement is 0%; 5%; 10% ; and 15% which could be compared with concrete without using husk ash. The compressive strength obtained in ...
Read MoreConcrete Aggregates. Ian Sims, Bev Brown, in Lea's Chemistry of Cement and Concrete (Fourth Edition), 1998. Design of processing plants. The objective of any concrete aggregate processing operation should be the production of good-quality, ‘clean’ coarse and fine materials in the normal range of sizes. The types of equipment used and the flow design
Read More
2010.4.21 This paper presents an experimental study on the properties and on the durability of concrete containing ceramic wastes. Several concrete mixes possessing a target mean compressive strength of 30 MPa were prepared with 20% cement replacement by ceramic powder (W/B = 0.6). A concrete mix with ceramic sand and granite
Read More
2020.8.21 Crushed stone is the most common material for use in the aggregate of bedding course. The aggregate for the bedding course of permeable roads needs to not only meet the requirements of basic
Read More
2020.5.1 The recycled aggregates having a maximum particle size of 12.5 mm were obtained by crushing concrete prisms using a jaw crusher (Fig. 1(a)). The concrete prisms were produced approximately 11 months earlier in the Concrete Laboratory in Isfahan University of Technology (IUT) using Type I Portland cement with a target 28-day
Read More
It has been found that by using the carbonated recycled concrete aggregates (CRCA), RAC’s non-destructive, mechanical and durability properties can be improved because of the method of carbonation. The compressive strength of the 100% RAC shows a decrement of 24.52% as compared to the 100% NAC.
Read More
2019.12.20 Cement: Cement used is locally available 53 Grade OPC sourced from Coimbatore and is tested as per IS: 4031 (Part IV)-2009 [27]. Coarse aggregates sourced from local crusher passing through 10 mm size sieve and retained on 4.75 mm sieve was tested as per IS: 2386 (2011) [28].
Read More
2022.12.22 Geopolymer recycled aggregate concrete (GPRAC) is a new type of green material with broad application prospects by replacing ordinary Portland cement with geopolymer and natural aggregates with recycled aggregates. This paper summarizes the research about the mechanical properties, durability, and microscopic aspects of
Read More
Durability Aspects Study of GGBS and Crusher Sand Based High Performance Concrete Mr. Prasad S. Barve 1 Dr. Lalit S. Thakur 2 Mrs. Ruchi P. Barve 3 Mr. Mahesh S. Patel 4
Read More
15.5.5.2 Concrete Durability. Concrete durability depends upon the degree of exposure, the concrete grade (or strength) and the cement content. A high density, alkali-resistant concrete will better resist the effects of moisture penetration. Since concrete is a porous material reinforcement bars within the concrete will be subject to possible ...
Read More
2022.9.10 Natural stone and recycled concrete with sizes of 5 to16.5 mm were both selected as natural coarse aggregate (NA) and recycled coarse aggregate (RA), respectively. The re-cycled aggregate was obtained from the crushed C30 concrete by a hummer crusher. The natural appearance of two coarse aggregates is presented in
Read More
LMZG ha formado un contenido único y rico de la cultura empresarial, especialmente la cohesión y la cohesión solidaria, es la fuente del desarrollo empresarial sostenible.
