Effect of Boron Active Belite Cement on the Compressive Strength of Concrete Exposed to High Temperatures

Abstract

The boron active belite (BAB) cement is a cement type different from Portland cement due to the presence of B 2 O 3 at 3-4%, low hydration temperature, low early strength and high final strength. In this study, concretes with three similar gradations were produced using BAB, CEM I 42.5 and CEM II 32.5 cements. Prepared cylindrical (Ø100/200 mm) concrete samples were exposed to high temperatures of 200, 400 and 600°C at the end of 7 th , 28 th and 90 th days of standard water curing periods. Then, the compressive strength, ultrasonic pulse velocity and Schmidt hammer strength properties of the concretes were investigated to determine their resistance to high temperatures. As a result, the compressive strength values of concrete with BAB cement were found to be higher in the final period than in concrete with normal Portland cement. Therefore, it can be said that the concretes produced with BAB cement is more durable against elevated temperatures from concretes produced with normal Portland cement. Moreover, the observed strength differences in concretes with BAB cement, were discussed in the light of current information in the literature.

Comparative Analysis on the Mechanical Properties, Transportation Cost, and Carbon Footprint Emission of Cement Mortar with PE and SSRS as Partial Replacement for Aggregates

“…For both cases, the recorded UPV was within the range of 3000-5000 m/s, which is typically observed for cementitious materials. Based on a typical classification of UPV to assess the quality of concrete and other cementitious products, the PE-cement mortar can be classified as good quality while the SSRS-cement mortar falls within the range of questionable to good quality [49,50].…”

A Novel Eco-Friendly Thermal-Insulating High-Performance Geopolymer Concrete Containing Calcium Oxide-Activated Materials from Waste Tires and Waste Polyethylene Terephthalate

“…In both cases, the recorded UPV was within the range of 3000-5000 m/s, which is typically observed for cementitious materials. Based on a typical classification of UPV for the assessment of the quality of concrete and other cementitious products, the PE-cement mortar can be classified as good quality while the SSRS-cement mortar falls within the range of questionable to good quality [64,65].…”