Production of sustainable and structural fiber reinforced recycled aggregate concrete with improved fracture properties: A review

Fracture behavior of a sustainable material: Recycled concrete with waste crumb rubber subjected to elevated temperatures

Research progress on recycled clay brick waste as an alternative to cement for sustainable construction materials

With increasing population and rising demands for improved built environment, there is an expected increase in greenhouse gas emission from the construction industry. Carbon dioxide emission levels are fast approaching a tipping point which could lead to irreversible climate change. The earth's capability to neutralise the CO2 emissions through the natural carbon cycle has been overstretched. Therefore it is imperative to adopt technologies that are able to capture and sequester CO2 in order to cancel out their release from industrial activities such as the construction and building industry. This is important so that cement-based material productions' carbon footprint can be reduced drastically for a positive change to take place in the climate. Biochar holds great promise as an effective CO2 sorptive material in cement-based applications relatively similar to its conventional use for soil amendment. Actually, fragmented researches on biochar as an admixture in cementitious materials have been conducted. Based on this logic, this review placed enormous emphasis on collating information from recent studies on biochars from agro-sources used as an admixture in cement-based applications. Similarly, the review gave up-to-date knowledge about the sources of the biomass and the production processes. Conclusively, the positive effects of biochar for carbon sequestration on some properties of the various cementitious applications were highlighted.

Recent advancements in the use of biochar for cementitious applications: A review

Characterising the resilient behaviour of pavement subgrade with construction and demolition waste under Freeze–Thaw cycles

Recycled aggregates from construction and demolition wastes as alternative filling materials for highway subgrades in China

Performance evaluation of cement stabilized recycled mixture with recycled concrete aggregate and crushed brick

3D self-bonded porous graphite fiber monolith for phase change material composite with high thermal conductivity

This paper attempts to study the effect of different strengthening methods on recycled coarse aggregate (RCA) reprocessed from construction and demolition (CD the 75% of the mixture meets the requirements of the second-class highways and below.

/pdf/performance-evaluation-of-strengthening-recycled-coarse-jnjypjmmg3.pdf

Performance Evaluation of Strengthening Recycled Coarse Aggregate in Cement Stabilized Mixture Base Layer of Pavement

Construction and demolition waste contain large amount of concrete and bricks. To identify its feasibility of applying in asphalt stabilized gravel mixtures as pavement base, this paper carried out researches on properties of recycled asphalt mixture (RAM) by laboratory testing, under different contents of recycled aggregates (RA) and proportions of bricks to concrete. First, the basic physical properties of each component of the RAM were determined. According to the actual screening passing rate, the Bailey method was used to design and verify the grading of RAM, and then initial asphalt content was estimated. The stability, flow value, voidage, and bulk density were obtained by Marshall Test, and the optimal asphalt-aggregate ratios were determined under different RA contents and proportion of bricks to concrete. Subsequently, the uniaxial compression test, splitting tensile test, immersion Marshall test, freeze-thaw splitting test, and Hamburg rutting test were performed to investigate mechanical properties, water stability, and high-temperature stability of RAM. The results shows that as the content of RA increases from 0% to 100%, the corresponding compressive strength, resilient modulus, and splitting tensile strength all decrease; the same change trend is presented in the residual stability and freeze-thaw splitting test strength ratio and rutting depth. According to the requirement of pavement base of high-grade roads in China’s standards, the recommended RA content and proportion of bricks to concrete were proposed for the design RAM.

/pdf/performance-evaluation-of-recycled-asphalt-mixtures-1sityb1yd5.pdf

Le Ding

Papers

Recycled aggregates from construction and demolition wastes as alternative filling materials for highway subgrades in China

Performance evaluation of cement stabilized recycled mixture with recycled concrete aggregate and crushed brick

3D self-bonded porous graphite fiber monolith for phase change material composite with high thermal conductivity

Performance Evaluation of Strengthening Recycled Coarse Aggregate in Cement Stabilized Mixture Base Layer of Pavement

Performance Evaluation of Recycled Asphalt Mixtures Containing Construction and Demolition Waste Applicated as Pavement Base