The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform

Wang Jia - One of the best experts on this subject based on the ideXlab platform.

  • Research on Strength Ratio of Recycled Mortar as Technical Index for Recycled Fine Aggregate
    Journal of Qingdao Technological University, 2009
    Co-Authors: Wang Jia
    Abstract:

    Strength ratio of recycled mortar can be serve as a technical index to reflect the properties of recycled fine aggregate. Because strength ratio of recycled mortar is affected by cement varieties and Fineness Modulus of recycled fine aggregate,cement varieties should be determnad and the Fineness Modulus of recycled fine aggregate should be considered. The paper presents the concept and experimental methods of the strength ratio of recycled mortar,and classifies the recycled fine aggregate according to this guide line.

Li Qiu-yi - One of the best experts on this subject based on the ideXlab platform.

Xin Yu Zhang - One of the best experts on this subject based on the ideXlab platform.

  • The Performance Evaluation and Control of Recycled Asphalt Mixture in Cold Recycling Project
    Applied Mechanics and Materials, 2013
    Co-Authors: Xin Yu Zhang
    Abstract:

    The recycled asphalt mixture was analyzed by the microstructure, grading variability and agglomerate degree evaluation from the Guaxing road. The results showed that some aggregate was more in quantity and smaller in the variation for the 9.5mm to 0.6mm material of recycled aggregate; the Fineness Modulus ratio (FMR) was 0.89, so the agglomerate degree of recycled asphalt mixture is relatively small, which had a little effect on the strength of the cold recycled mixtures; the gradation and unconfined compressive strength test of cement stabilized wasted asphalt mixture were made at different blending ratios; the reasonable range of the cold recycled utilization was 20% to 40% for the recycled old materials in Guaxing road.

Rafat Siddique - One of the best experts on this subject based on the ideXlab platform.

  • effect of coal bottom ash as partial replacement of sand on workability and strength properties of concrete
    Journal of Cleaner Production, 2016
    Co-Authors: Malkit Singh, Rafat Siddique
    Abstract:

    Abstract Large quantity (35 million tons) of coal bottom ash is produced by thermal power plants in India. The present method of disposal of coal bottom ash on open land is the main cause of an environment hazard for the surrounding community. As utilization of coal bottom ash can help in alleviating environmental problems, thus the present work was done to explore the possibility of its use as sand replacement in concrete manufacturing. Two types of control concrete mixtures to develop 28 d compressive strength of 38 MPa designated as concrete ‘A’ and 34 MPa designated as concrete ‘B’ were made with river sands having different Fineness of Modulus. In both grades of concrete mixtures, sand was replaced with coal bottom ash at 20, 30, 40, 50, 75 and 100% levels. Workability and bleeding of concrete decreased on use of coal bottom ash as fine aggregate. Test results show that compressive and splitting strength of concrete mixture ‘A’ did not changed significantly when sand having Fineness Modulus of 1.97 was replaced with coal bottom ash. However, in case of concrete mixture ‘B’, when coal bottom ash was used as replacement of sand having Fineness Modulus of 2.58, the compressive and splitting tensile strength of bottom ash concrete decreased at early curing age. After 90 d of curing age, compressive and splitting tensile strength of bottom ash concrete mixtures was almost comparable to that of control concrete mixture. Bottom ash concrete mixtures displayed lower Modulus of elasticity and abrasion resistance as compared to control concrete mixture. Abrasion resistance of bottom ash concrete mixtures improved significantly with age. Pulse velocity through bottom ash concrete mixtures indicates that good quality concrete can be made with coal bottom ash as replacement of either type of sand.

Ling Hong-jie - One of the best experts on this subject based on the ideXlab platform.

  • Experimental research on the cold recycled asphalt mixtures with emulsified asphalt
    Journal of Jinan University, 2008
    Co-Authors: Ling Hong-jie
    Abstract:

    Used the coarse aggregate void filling(CAVF)method for gradation design of cold recycled asphalt mixtures with the reclaimed asphalt pavement(RAP) of Guangzhou-Shenzhen Expressway,and used three kind of binders,including common emulsified asphalt,SBR modified emulsified asphalt and the emulsified SBS modified asphalt which was developed independently to conduct indoor research by comparison.The testing result shows that the performance of the new emulsified SBS modified asphalt cold recycled mixtures is superior to that of other two types of emulsified asphalt cold recycled mixtures.About the evaluation on the old asphalt mixtures,we presents a new quantitative evaluation indicator-Fineness-Modulus ratio to evaluate the clustering of the old asphalt mixtures.The study shows that the Fineness-Modulus ratio is closely related to the performance indicators of the old asphalt mixtures and the cold recycled asphalt mixtures,which has engineering meaning for the quality control of the old asphalt mixtures and the design of the cold recycled asphalt mixtures.