تفاصيل المنتج

(PDF) Resistance of Recycled Aggregate Concrete (RAC)

2020-1-29  The evaluation of the damage process of recycled aggregate concrete made with different recycled coarse aggregate (RCA) replacements (30%, 50%, 70% and 100%) exposed to sodium sulfate solution (50 ...

Inquire now

Prediction of the sulfate resistance for recycled aggregate

2022-1-24  This paper aims at using ensemble learning algorithms to predict the durability evolution for RAC under sulfate attack. The initial database with 206 samples on the sulfate resistance of RAC was collected from literature , , , , , , , , , , , .Factors affecting the sulfate resistance of RAC can be divided into two groups: materials properties and environmental

Inquire now

Investigation of carbonation resistance of recycled

2021-1-8  Abstract. This paper studied the carbona tion resistance of recycled aggregate concrete (RAC) designed by two mix proportio n design methods through accelerat ed car bonation test. The ...

Inquire now

Resistance to Freezing and Thawing of Recycled

2003-5-1  Author (s): Rohi M. Salem, Edwin G. Burdette, and N. Mike Jackson. This paper describes a laboratory investigation of the resistance to freezing and thawing of recycled aggregate concrete (RAC) compared with that of natural aggregate concrete (NAC). Three different cases were considered for RAC and NAC. Case I consisted of using a medium water ...

Inquire now

Corrosion Resistance of Recycled Aggregate Concrete

2020-5-1  The main objective of this paper is the investigation of the corrosion resistance of reinforced concrete containing various proportions of

Inquire now

Durability of recycled aggregate concrete – A review

2018-5-1  Although the researches on recycled aggregate concrete (RAC) has been going on for nearly 70 years , the use of RA in concrete structures is still limited due to its long-term durability concerns. With the decrease of natural aggregate resources and the increase of waste concrete generation, RAC has become a hot research topic around the world.

Inquire now

Experimental and simulation study on the impact

2022-7-19  As for the controlled mix, concrete with a CS of 45 MPa was produced.The largestcoarse aggregate size was 10 mm, and the coarse aggregate specific gravity was 2.64.At room temperature and moisture, the bulk density and specific gravity of normal silica fine aggregate are 1730kg/m3 and 2.65, respectively.

Inquire now

Eccentric compression behavior of reinforced recycled

Two types of coarse aggregate, namely, natural coarse aggregate (NCA) and recycled coarse aggregate (RCA), were used. The NCA and RCA used in this study were continuous grades ranging from 5 mm to 30 mm, where the RCA was obtained by crushing and sieving the waste rubble concrete in the laboratory.

Inquire now

Resistance of Recycled Aggregate Concrete (RAC)

2020-3-1  The decrease was mainly attributed to the higher water/cement ratio of the RAC compared to that of the concrete with natural aggregates [11, 12]. The effect of using RA as a replacement of natural aggregates on other properties of fresh and hardened concrete was also investigated by many researchers [13-19].

Inquire now

Table 8 Resistance of Recycled Aggregate Concrete (RAC)

Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates Table 8 Mass loss percentages of concrete specimens of reference and modified mixtures partially immersed in 2.5% sodium sulfate solution.

Inquire now

Figure 1 from Resistance of Recycled Aggregate Concrete

DOI: 10.1155/2020/9746341 Corpus ID: 213792555. Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates

Inquire now

Figure 3 from Resistance of Recycled Aggregate Concrete

2020-1-29  Recycled aggregates were widely used in the concrete industry as a replacement of natural aggregates in the last two decades. In this study, the resistance of concrete mixtures having various levels of recycled aggregate as a replacement of natural coarse aggregate to the attack of magnesium and sodium sulfates was investigated.

Inquire now

Table 10 from Resistance of Recycled Aggregate Concrete

Table 10: Mass loss percentages of concrete specimens of reference and modified mixtures partially immersed in 6.5% sodium sulfate solution. - "Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates"

Inquire now

Figure 5 from Resistance of Recycled Aggregate Concrete

Figure 5: Mass losses of concrete specimens of reference and modified mixtures at the end of 10 weeks of partial immersion in various concentration of magnesium sulfate solutions. - "Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates"

Inquire now

Frost resistance of recycled aggregate concrete

The frost resistance is used as a durability indicator. The characteristics of recycled aggregates (RAs) and their impact on the characteristics of RA concrete are presented. Some basic factors concerning the frost resistance of RA concrete as RA content and degree of water saturation are considered. The RA concrete is compared with a control ...

Inquire now

Freeze-thaw Resistance of Recycled Aggregate Concrete

2020-9-28  To fill this gap, this study investigated the freeze-thaw resistance of RAC in response to simulated acid rain spraying. The effects of replacement ratios of

Inquire now

FOHGDJJUHJDWHFRQFUHWHV 5$V

The steel corrosion and chloride resistance of the RAC were significantly improved with GRHA at 20 to 50 percent replacements. Thus, use of GRHA at 50% to replace OPC resulted in ... Recycled aggregate concrete RAC has a marginally lower split tensile strength than natural aggregate concrete NAC. In contrast to compressive strength, however ...

Inquire now

Eccentric compression behavior of reinforced recycled

Two types of coarse aggregate, namely, natural coarse aggregate (NCA) and recycled coarse aggregate (RCA), were used. The NCA and RCA used in this study were continuous grades ranging from 5 mm to 30 mm, where the RCA was obtained by crushing and sieving the waste rubble concrete in the laboratory.

Inquire now

Resistance of Recycled Aggregate Concrete (RAC ...

Article “Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking ...

Inquire now

Table 5 Resistance of Recycled Aggregate Concrete (RAC)

Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates Table 5 Mass loss percentages of concrete specimens partially immersed in a 2.5% magnesium sulfate solution of reference and modified mixtures.

Inquire now

The Fire Resistance Performance of Recycled Aggregate

2014-12-8  In order to ascertain the fire resistance performance of recycled aggregate concrete (RAC) components with different concrete compressive strengths, four full-scaled concrete columns were designed and tested under high temperature. Two of the four specimens were constructed by normal concrete with compressive strength ratings of C20 and C30,

Inquire now

To improve the resistance of recycled aggregate concrete

2021-11-1  Request PDF To improve the resistance of recycled aggregate concrete (RAC) to the internal steel corrosion by the pre-treatment of aggregate

Inquire now

Resistance to freezing and thawing of recycled aggregate

2003-5-1  According to Sagoe-crentsil [15] abrasion resistance of recycled concrete aggregate is twelve percent lower than virgin aggregate. According to ACPA [13] abrasion resistance for recycled concrete ...

Inquire now

The Fire Resistance Performance of Recycled

2014-12-8  In order to ascertain the fire resistance performance of recycled aggregate concrete (RAC) components with different concrete compressive strengths, four full-scaled concrete columns were designed and tested under

Inquire now

Carbonation Behavior of Recycled Aggregate Concrete

A study on carbonation resistance of recycled aggregate concrete (RAC) subjected to different loading level was carried out. Three series of concrete mixtures were prepared with loading level of 0.5, 0.8, and 1.2 of ultimately tensive strength of concrete. The coarse recycled aggregate was used as 30%, 60% and 90% replacements of coarse natural aggregate and fine recycled

Inquire now

Degradation Resistance and Reliability Analysis of

2020-3-16  Resistance to sulfate degradation is an important index used to measure concrete’s durability. In this study, recycled aggregate concrete (RAC) with a 0%, 30%, and 50% recycled coarse aggregate substitution rate and a 0% and 15% recycled fine aggregate replacement rate was used as the research object, and its degradation resistance was evaluated by the mass

Inquire now

Fire Resistance Performance of Recycled Aggregate

Fire Resistance Performance of Recycled Aggregate Concrete Columns with Different Concrete Compressive Strengths Rafid Atea Al-Furat Al-Awsat Technical University/ Najaf Technical Institute, Iraq. E-Mail: [email protected] ABSTRACT In order to ascertain fire resistance performance of recycled aggregate concrete (RAC) components with

Inquire now

Eccentric compression behavior of reinforced recycled

Two types of coarse aggregate, namely, natural coarse aggregate (NCA) and recycled coarse aggregate (RCA), were used. The NCA and RCA used in this study were continuous grades ranging from 5 mm to 30 mm, where the RCA was obtained by crushing and sieving the waste rubble concrete in the laboratory.

Inquire now

المقالات التي تهمك

اترك لنا أرسالة