نتایج جستجو برای: high strength self consolidating concrete
تعداد نتایج: 2708038 فیلتر نتایج به سال:
The object of research is high-strength self-compacting concrete, which does not require additional vibration during laying. One the most problematic issues concretes increased cracking, associated with large shrinkage deformations such and their fragile destruction.
 A decrease in concrete was established when part cement replaced to mineral additives. This effect explained by a content a...
micro silica (ms) is an extremely fine, spherical powder that is used as an additive for improving concrete performance. it is obtained as a by product of silicon metal and ferrosilicon alloy production. due to its pozzolanic nature, micro silica can be used to enhance the qualities of both fresh and hardened concrete. addition of micro silica into the concrete as a cement replacement, dec...
Abstract In this study, two industrial wastes – circulating fluidized bed combustion co-fired fly ash (CFA) and ground granulated blast-furnace slag (GGBS) were used as green materials instead of cementitious in controllable low strength material (CLSM). CLSM was to backfill the pavement. should meet compressive requirements specification (under 8.24 MPa), it had self-consolidating characterist...
Self-consolidating concrete (SCC) is a special that highly flow able, non-segregating and self-expanding. Self-compacted poured into the formwork without compaction fills by its own weight. SCC considered to have many advantages. Compared with conventional as improved Construction quality, faster construction activity, lower cost etc. This project was carried out evaluate effects of addition ny...
Self-Compacting Concrete Originally developed in Japan, SCC technology was made possible by the much earlier development of Superplasticisers for concrete. To compare the performance of SCC with Fly Ash 20%, Silica Fume 10%, Rice Husk Ash (5%, 10%, and 15%) as a partial replacement of cement, due to the high increase in construction which has brought a heavy demand for ingredients of concrete s...
This paper investigates experimentally and analytically the torsion behavior of steel fibered high strength self compacting concrete beams reinforced by GFRP bars. Steel fibered high strength self compacting concrete (SFHSSCC) and GFRP bars became in the recent decades a very important materials in the structural engineering field. The use of GFRP bars to replace steel bars has emerged as one o...
In this laboratory research, a mixing plan was made of ordinary concrete containing Portland cement type 2 with a grade of 500 kg / m3. Compressive strength, tensile strength and modulus of elasticity tests of concrete were performed on concrete samples at 90 days of processing age at 21 °C and 600 ° C. In order to further evaluate and validate the results, SEM and XRD tests were performed on c...
Leca lightweight particles are used for structural and semi structural concrete in different countries. In Iran it is usually used as Mass lightweight concrete, blokes and partitions. In this research an experimental work carried out using Leca concrete to assess its physical and mechanical properties and possibility of constructing high strength lightweight concrete to use as structural elemen...
Self compacting concrete (SCC) is an innovative development of conventional concrete, which requires high binder content to increase its segregation resistance. This paper presents a comparative study on the use of different materials as binder content in SCC and their effects on the workability and strength properties are checked. Different combinations of Fly ash, Metakaolin and Saw dust ash ...
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