Journal of Building Materials and Structures
Volume 3, Numéro 1, Pages 15-30

Effect Of Limestone Powder As A Partial Replacement Of Crushed Quarry Sand On Properties Of Self-compacting Repair Mortars

Authors : Benabed Benchaa . Soualhi Hamza . Belaidi Akram Salah Eddine . Azzouz Lakhdar . Kadri El Hadj . Kenai Said .

Abstract

Self-compacting repair mortars (SCRM) are particularly desired for the rehabilitation and repair of reinforced concrete structures. The properties of SCRM can be improved by using chemical, mineral, polymer and fiber additives. In limestone quarries, considerable quantities of limestone fine powder are obtained during the process of crushing rock. These fine powders are being collected and their utilization is a big problem from the aspects of disposal, environmental pollution and health hazards. The introduction of limestone powder as cement and sand replacement present interesting possibilities to reduce the cement cost production, CO2 emission and the conservation of natural resources. The effects of limestone powder content in crushed sand on the properties of SCRM are not studied. An experimental study was undertaken to find out the effect of limestone powder content on fresh and hardened properties of SCRM. SCRM mixtures were prepared using crushed sand partially replaced with limestone powder at varying percentages up to 30%. Results indicate that the limestone powder as sand replacement significantly improves the fresh and hardened properties of SCRM with a content ranging from 10 to 15%. The use of limestone powder in repair mortar and concrete application would offer technical, economical and environmental advantages for concrete producers.

Keywords

Crushed sand; Limestone powder; Self-compacting repair mortar; Concrete repair.

Mix Proportioning And Performance Of A Crushed Limestone Sand-concrete

Makhloufi Zoubir .  Bouziani Tayeb .  Bédérina Madani .  Hadjoudja Mourad . 
pages 10-22.


Strength And Durability Of Low-impact Environmental Self-compacting Concrete Incorporating Waste Marble Powder

Boukhelkhal Aboubakeur .  Azzouz Lakhdar .  Benabed Benchaa .  Belaïdi Akram Salah Eddine . 
pages 31-41.


The Effect Of Hybrid Steel Fiber On The Properties Of Fresh And Hardened Self-compacting Concrete

Haddadou Naima .  Chaid Rabah .  Ghernouti Youcef .  Adjou Naima . 
pages 65-76.