Consequently, the asymptotic strength can be regarded as the genuine characteristic compressive strength of concrete. Based on this, we propose a new procedure to evaluate this genuine characteristic strength as well as to check the conformity of concrete with strength requirements....
It is aimed to develop mean and characteristic compressive strength correlations of rubberized concrete interlocking hollow and grouted wall systems, corresponding to rubberized concrete interlocking brick and prism strengths. A systematic investigation of 20 rubberized concrete interlocking brick units, 10 ...
Response surface analysis of the fresh mix flow and the hardened concrete compressive strength test results led to identification of the optimum values of mix design parameters. The optimum mix was found to produce a desired balance of fresh mix flow and hardened concrete compressive strength....
Response surface analysis of the fresh mix flow and the hardened concrete compressive strength test results led to identification of the optimum values of mix design parameters. The optimum mix was found to produce a desired balance of fresh mix flow and hardened concrete compressive strength. 展开...
Concrete filled steel tubular (CFST) arch has broad application prospects as a high-strength support form in underground excavations, especially in weak and broken surrounding rock. However, the structural design of CFST arch in underground excavation still relies on experience-based method and lack...
Strategy for mix design of geo-polymer concrete was suggested by integrating fly ash, silica fume, and GGBFS as precursors.Geo-polymer concrete had highest compressive strength of 87.53 MPa at 14M of NaOH with oven curing at 60℃ adding GGBFS.ANN and Response Surface Method were used to find...
There were numerous studies on the strength characteristic of concrete containing fly ash. However, there is little study in the literature regarding the strength o f HVFA concrete with fibers subjected to sulphate media. Thus the aim of this work is to study the effect of variation of fiber ...
Note: a: 28-day compressive cube strength; b: relative strength of CS mix to reference mix; c: average of relative values at different CS contents; d: total average; e: overall average of all data.GC, geopolymer concrete;HPC, high-performance concrete;HSC, high-strength concrete;MO, morta...
This paper presents the characterisitic influence of carbon fibers (CFs) on the fresh state (filling ability, passing ability and resistance to segregation) and hardened state (compressive and tensile strength) properties of carbon fiber based self compacting concrete (CFBSCC). Three different water...
The effects of age and aggregate type on the behavior of normal, medium, and high-strength concrete, and the relationships between compressive strength, flexural strength, and fracture properties (fracture energy and characteristic lengt... S. Barham,D Darwin 被引量: 12发表: 1999年 Size Effect ...