Reduce the Influence of Horizontal and Vertical Cold Joints on the Behavior of High Strength Concrete Beam Casting in Hot Weather by Using Sugar Molasses

  • Authors

    • Fatimah Hameed Naser Al-Mamoori
    • Ali Hameed Naser Al-Mamoori
    2018-11-27
    https://doi.org/10.14419/ijet.v7i4.19.27999
  • beam, cold/construction joint, flexure, HSC, mechanical properties, PH-Value, setting time, shear, slump test, Sugar Molasses (SM), unusually casting sequence.

  • Abstract

    The current research studies the effect of cold joints on the behavior shear and flexure of High Strength Concrete (HSC) beams caused by delayed casting sequence during the hot weather in summer of Iraq.

    Fresh concrete should be kept alive during the various casting batches for concrete element by re-vibration. However, the over vibration caused loss in homogeneity and it is difficult to keep the workability of concrete during hot weather due to the effect of setting time.

    To deal with this problem of improper casting sequence, which eventually leads to the formation of cold joints, it will be used sugar waste (named as Sugar Molasses (SM)) is a by-product resulted from refining process of sugar as a delayed agent to increase the setting time in order to prevent early set of concrete due to adverse effects in construction joint of hot weather.

    In the current study, the first objective aims to investigate some of fresh and hardened mechanical properties of HSC (with high cement content) using SM at percentages of (0, 0.05, 0.1, 0.2, 0.3) % from the weight of cement under the concept of sustainable development. The second objective aims to investigate the location and surface texture effect of horizontal and vertical cold joints on the flexural and shear behavior of beam with/without SM. This objective includes testing of twenty four plain concrete beam of (110×110×650 mm) under two point load; half of them casting without roughing (smooth) the old layer and the other casted after roughed it.

    SM content of 0.2% of cement weight can improve compressive strength by about 11.2% at 28 days and delay initial setting time by about 4.617 hours (277 minutes). No adverse effect on concrete have been observed at this dosage of SM concentration for the ages of concrete cylinders studied. Delays in the setting of concrete at this dosage of SM content help in reducing the early setting of concrete and therefore reduced the impact of the cold joints formation in concrete beams under Iraqi hot weather condition. The failure load for the beams with SM of smooth and rough vertical joints is in the range between (1.95 - 2.12) and (1.46-1.37); respectively times that of the case of beam without SM.

     

  • References

    1. [1] Critchell P., “Joints and Cracks in Concrete â€, CR Books (A Maclaren Company), London, 1968.

      [2] G. R. Otoko, Minimising hot weather effects on fresh and hardened concrete by use of cassava powder as admixture, (2014) European International Journal of Science and Technology Vol. 3 No. 2 pp. 1-8.

      [3] Kleinlogel, Influence on Concrete, Frederick Ungar Publishing, New York, 1950, pp. 222– 223.

      [4] H.F. Gonnerman, Job problems and practice. A concrete floor in a candy factory? Proc. Am. Concr. Inst. 35 (1938–39) 116.

      [5] M. C. G. Juengera and H. M. Jennings, New insights into the effects of sugar on the hydration and microstructure of cement pastes, Cement and Concrete Research 32 (2002) 393–399.

      [6] R. Ashworth, Some investigations into the, use of sugar as an admixture to concrete, B.Eng., A.M.I.C.E, Paper No. 6770 (1965), for written discussion, pp.129-145.

      [7] N. L. Thomas and J. D. Birchall, The retarding action of sugars on cement hydration , cement and concrete research (1983) Vol. 13, No. 6, pp. 830-842.

      [8] K. Luke and G. Luke, Effect of sucrose on retardation of Portland cement, Advances in Cement Research, (2000), Vol. 12, No. 1, pp.9-18.

      [9] M. C. G. Juenger and H. M. Jennings, New insights into the effects of sugar on the hydration and microstructure of cement pastes, Cement and Concrete Research (2002) No.32 pp.393-399.

      [10] E. Abalaka, Effects of Sugar on Physical Properties of Ordinary Portland Cement Paste and Concrete, ATBU Journal of Environmental Technology (AU J.T.) (2011) Vol.14,No.3pp. 225-228.

      [11] E. Abalaka, Comparative Effects of Cassava Starch and Simple Sugar in Cement Mortar and Concrete, ATBU Journal of Environmental Technology (AU J.T.) (2011) Vol.14,No.1pp. 13-22.

      [12] F. Mazumder, Effect of sugar on setting time of Portland cement, proceedings of 3rd International Conference on Advances in Civil Engineering (2016), Chittagong, Bangladesh; pp. 349-352.

      [13] H. M. Husain and D. M. Hamza, Analysis of corner beam-column junction with Inclusion of the effect of construction joints, Journal of Engineering (2007), Vol. 13 No.2.

      [14] M. Metwally and M. S. Issa, Influence of horizontal construction joint on the flexural behaviour of reinforced concrete slabs, (2007) HBRC Journal VOL. 3 No. 3.

      [15] Q. Abdul-Majeed, Evaluation of Transverse Construction Joints of Reinforced Concrete Beams, (2010) Eng. & Tech. Journal, Vol.28, No.14.

      [16] Q. Abdul-Majeed, L. A. Ghaleb and M. G. Ghaddar, Effect of the Number of Horizontal Construction Joints In Reinforced Concrete Beams, (2010) Eng. & Tech. Journal, Vol.28, No.14.

      [17] Z. W. Abass, Effect of Construction Joints on Performance of Reinforced Concrete Beams, (2012) Al-Khwarizmi Engineering Journal, Vol. 8, No. 1, PP 48- 64.

      [18] Y. Ali and W. H. Mahdi, Behavior of Reinforced Hybrid Concrete Corbel-Column Connection with Vertical Construction Joint, (2017) Journal of Babylon University, Vol. 25, No. 1, PP 30- 44.

      [19] Iraqi Specification Standards IQS No. 5, 1984 "Portland Cement", Central Agency for Standardization and Quality Control, Planning Council, Baghdad, IRAQ (in Arabic).

      [20] Iraqi Specification Standards IQS No.45, 1984 "Aggregate from Natural Sources for Concrete and Construction", Central Agency for Standardization and Quality Control, Planning Council, Baghdad, IRAQ ( in Arabic).

      [21] ACI 363R-92, 1998 (Reapproved 1997) " State-of-the-Art Report on HSC", ACI Manual of concrete practice, Part1, PP. 55.

      [22] ASTM C 192/C 192M-05, "Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory", Annual Book of ASTM Standards, American Society for Testing and Materials, pp.1-8, 2005.

      [23] Mehta, P. K. and Monteiro P. J. M., " Concrete. Microstructure, properties, and materials " McGraw-Hill ,Third Edition (2006), 684 pp.

      [24] ASTM C 143/C 143M-05a, "Standard Test method for Slump of Hydraulic-Cement Concrete", Book of ASTM Standards, American Society for

      [25] ASTM C 39/C 39M-05, 2005 "Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens" Annual Book of ASTM Standards, Vol. 04.02 Concrete and Aggregates, West Conshohocken, PA, United States, 7 pp.

      [26] ASTM C 496/C 496M-04, "Standard Test Method for Splitting Tensile Strength of Cylinder Concrete Specimens", Annual Book of ASTM Standards, American Society for Testing and Materials, 2004.

      [27] ASTM International (2008) F710-08 Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring.

      [28] V. Kumar, " Protection of Steel Reinforcement for Concrete: A Review ", (1998) R & D Centre for Iron & Steel, Vol. 16, No. 4.

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  • How to Cite

    Hameed Naser Al-Mamoori, F., & Hameed Naser Al-Mamoori, A. (2018). Reduce the Influence of Horizontal and Vertical Cold Joints on the Behavior of High Strength Concrete Beam Casting in Hot Weather by Using Sugar Molasses. International Journal of Engineering & Technology, 7(4.19), 794-800. https://doi.org/10.14419/ijet.v7i4.19.27999

    Received date: 2019-02-26

    Accepted date: 2019-02-26

    Published date: 2018-11-27