Research Articles | Challenge Journal of Concrete Research Letters

Production of Durable High Strength Flowable Mortar Reinforced With Hybrid Fibers

Eethar Thanon Dawood, Mahyuddin Ramli



This study deals with the production of durable high strength flowable mortar (HSFM). Firstly, the optimum percentage of silica fume was determined due to Pozzolanic Activity Index (P.A.I) test. Secondly, the selected mortar reinforced by different percentages of steel fibers or hybrid fibers of  steel fibers , palm fibers and synthetic fibers (Barchip) to prepare HSFM mixes. Such mixes were tested in compressive strength, splitting tensile strength, static modulus of elasticity, flexural strength, toughness indices determination, and impact load for all the mixes. Lastly, the effects of seawater exposure on the properties of HSFM have been observed. The results show that the use of 10% silica fume as a partial replacement of cement indicate the best P.A.I. On the other hand, the hybridizations of such fibers enhance the performance of HSFM mixes. In addition, the hybrid fibers reduce the permeability of HSFM leading to significance improvement against seawater exposure.


high strength; pozzolanic activity index; hybrid fibers; impact resistance; seawater exposure

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ASTM C109 (2002). Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens). Annual book of ASTM Standards, ASTM International, West Conshohocken, PA.

ASTM C311 (2002). Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use as a Mineral Admixture in Portland-Cement Concrete. Annual book of ASTM Standards, ASTM International, West Conshohocken, PA.

ASTM C348 (2002). Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars. Annual book of ASTM Standards, ASTM International, West Conshohocken, PA.

ASTM C1437 (2002). Standard Specification for Flow Tests of Cement mortar. Annual book of ASTM Standards, ASTM International, West Conshohocken, PA.

ACI 211.1-91 (2000). Standard practice for selecting proportions for normal, heavyweight, and mass concrete. ACI manual of concrete practice, Part 1: Materials and general properties of concrete. American Concrete Institute, Farmington Hills, MI.

ACI Committee 544 (1988). Measurement of properties of fiber- reinforced concrete. ACI Material Journal, 85(6), 583-593.

Atis CD, Karahan O (2009). Properties of steel fiber reinforced fly ash concrete. Construction & Building Materials, 23, 392-99.

Bentur A, Mindess S (1990). Fiber Reinforced Cementitious Composites. Elsevier Applied Science, London, UK.

Burak F, Turkel F, Altuntas Y (2007). Effects of steel fiber reinforcement on surface wear resistance on self compacting repair mortar. Cement and Concrete Composites, 29, 391-396.

Chen B, Liu J (2004). Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperatures. Cement & Concrete Research, 34, 1065-1069.

Chen B, Liu J (2005). Contribution of hybrid fibers on the properties of the high-strength lightweight concrete having good workability. Cement & Concrete Research, 35, 913-917.

Dawood ET, Ramli M (2011). High strength characteristics of cement mortar reinforced with hybrid fibres. Construction and Building Materials, 25, 2240-2247.

Dawood ET, Ramli M (2012). Durability of high strength flowing concrete with hybrid fibres. Construction and Building Materials, 35, 521-530.

Felekoğlu F, Turkel S, Altuntas Y (2009). Effects of steel fiber reinforcement on surface wear resistance of self compacting repair mortars. Cement and Concrete Composites, 29, 391-396.

Gang L, Wang K, Rudolphi TJ (2008). Modeling reheological behavior of highly flowable mortar using concepts of particle and fluid mechanics. Cement and Concrete Composites, 30, 1-12.

Hannant DJ (1987). Fiber Cement and Fiber Concrete. Wiley, Chichester, UK.

Hooton RD (1993). Influence of silica fume replacement of cement on physical properties and resistance to sulphate attack, freezing and thawing and alkali-silica reactivity. ACI Materials Journal, 90(2), 143-151.

Hoseini M, Bindiganavile V, Banthia N (2009). The effect of mechanical stress on permeability of concrete: A review. Cement and Concrete Composites, 31(4), 213-220.

Kayali O, Haque MN, Zhu B (2003). Some characteristics of high strength fiber reinforced lightweight aggregate concrete. Cement and Concrete Composites, 25, 207-213.

Khayat KH, Morin R (2002). Performance of self-consolidating concrete used to Repair parapet wall in Montreal. Proceedings of the First North American Conference on the Design and Use of Self-Consolidating Concrete, 475-481.

Markovic I, Walraven JC, Van MJ (2003). Self compacting hybrid fiber concrete-mix design, workability and mechanical properties. Proceedings of the Third International Symposium on Self-Compacting Concrete, 763-775.

Nataraja MC, Dhang N, Gupta AP (1999). Stress-strain curves for steel-fibre reinforced concrete under compression. Cement and Concrete Composites, 21, 383-390.

Neville AM (1995). Properties of Concrete. 2nd edition. Longman Limited, UK.

Okamura H, Ouchi M (2003). Self compacting concrete. Journal of Advanced Concrete Technologies, 1(1), 1-15.

Roy DM (2002). Hydration of blended cement containing slag, fly ash or silica fume. Proceeding of Meeting Institute of Concrete Technology, Coventry, U.K.

Sahmaran M, Yaman IO (2007). Hybrid fibre reinforced self-compacting concrete with a high-volume coarse fly ash. Construction and Building Materials, 21, 150-156.

Sahmaran M, Yaman IO, Tokyay M (2009). Transport and mechanical properties of self consolidating concrete with high volume fly ash. Cement and Concrete Composites, 31, 99-106.


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