CHARACTERIZATION OF FIBER REINFORCED SELF-CONSOLIDATING MORTARS FOR USE IN PATCHING DAMAGED CONCRETE
Keywords:QDL, NATURAL POZZOLAN, SELF-CONSOLIDATING MORTARS, ADHERENCE, COMPATIBILITY.
AbstractTHIS RESEARCH AIMS TO STUDY THE EFFECT OF SUPPLEMENTARY CEMENTITIOUS MATERIALS (SCMS) SUCH AS QUARRY DUST LIMESTONE (QDL) AND NATURAL POZZOLANA (NP) ON THE PERFORMANCE OF FIBER REINFORCED SELF-CONSOLIDATING REPAIR MORTARS (FR-SCRMS). BASED ON PREVIOUS OPTIMIZATION OF QDL AND NP REPLACEMENT RATIOS, TWO MORTAR MIXTURES INCORPORATING 10% QDL AND 20% NP AS CEMENT REPLACEMENTS WERE PREPARED. THE EVALUATION WAS BASED ON FRESH (SLUMP FLOW, FLOW TIME), HARDENED (COMPRESSIVE AND FLEXURAL STRENGTHS AND ADHERENCE TO OLD CONCRETE USING SLANT SHEAR TEST). IN ADDITION, THE INFLUENCE OF THREE CURING CONDITIONS, SIMILAR FROM THOSE NORMALLY ENCOUNTERED IN THE FIELD WAS EVALUATED ON THE COMPATIBILITY BETWEEN REPAIR MATERIALS AND SUBSTRATE, UNDER FLEXURAL STRENGTH TEST BY USING THIRD-POINT’S LOADING BEAM TEST METHOD. IT IS DEMONSTRATED THAT THE FR-SCRMS IS PROMISING TO BE USED IN REPAIR CONCRETE STRUCTURES CLASS R4 (EN 1504-3) WITHOUT REDUCING THE ADHESIVE STRENGTH.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).