Experimental data on compressive strength and ultrasonic pulse velocity properties of sustainable mortar made with high content of GGBFS and CKD combinations

The development in the construction sector and population growth requires an increase in the consumption of construction materials, mainly concrete. Cement is the binder in concrete, so increasing cement production will increase the energy consumed, as well as in the emission of carbon dioxide. This harmful effect of the environment led to the search for alternative materials for cement, as the waste or by-products of other industries is a promising solution in this case. Among these common materials are ground granulated blast furnace slag (GGBS) and cement kiln dust (CKD). This dataset describes the compressive strength and ultrasonic pulse velocity of mortar consisted of high content of GGBS and CKD combinations as a partial substitute for cement (up to 80%) at the ages of 1, 2, 3, 7, 14, 21, 28, 56, 90 and 550 days. This dataset can help the researchers to understand the behaviour of GGBS and CKD in high replacement levels for cement during early (1 day) and later ages (550 days). According to this understanding, the authors believe that the data available here can be used to produce more environmentally friendly mortar or concrete mixtures by significantly reducing the amount of cement used by replacing it with waste or by-products of other industries.

and CKD combinations as a partial substitute for cement (up to 80%) at the ages of 1, 2, 3, 7, 14, 21, 28, 56, 90 and 550 days. This dataset can help the researchers to understand the behaviour of GGBS and CKD in high replacement levels for cement during early (1 day) and later ages (550 days). According to this understanding, the authors believe that the data available here can be used to produce more environmentally friendly mortar or concrete mixtures by significantly reducing the amount of cement used by replacing it with waste or by-products of other industries.
© 2020 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license.

Value of the Data
• This data composed of alternative cement materials in the concrete industry for building construction. • The information provided by this data are useful to find a significant solution to environmental problems through the re-use of industrial waste in new other applications as well as reducing the CO 2 emissions that result from the cement industry. • The data in this article is beneficial in producing sustainable mortar in which cement content is significantly reduced. • This data helps others to understand the behaviour of hardened mortar containing high levels of GGBS and CKD during early and later ages.

Data Description
The dataset provided here represented the information for examining the compressive strength and ultrasonic pulse velocity (UPV) properties of the hardened mortar containing different combinations of Ground Granulated Blast Furnace Slag (GGBFS) and cement Kiln Dust (CKD) (in a high volume fraction) as alternatives of cement. Four mixtures were implemented, Control (reference mix without replacement) and three other mixtures included replacing the cement (by weight) with GGBFS and CKD combinations which designated as follows: T40 (26.7% GGBFS + 13.3% CKD), T60 (40% GGBFS + 20% CKD), T80 (53.3% GGBFS + 26.7% CKD). The details of these mixtures can be found in [1] . The compressive strength and UPV tests were examined at 1, 2, 3, 7, 14, 21, 28, 56, 90 and 550 days of curing . The test results for Control, T40, T60 and T80  mixtures respectively are shown in Tables 1 , 2

Table 7
Results of the UPV (m/s) for T60 mixture.  More detailed information about the compressive strength and UPV data can be found in the supplementary Excel datasets and in Ref. [1] .

Experimental Design, Materials, and Methods
The main aim of using GGBFS and CKD as cement replacement materials is to reduce the environmental burden of cement manufacturing. For example, the cement industry consumes high energy as well as emits a high amount of CO 2 into the atmosphere [2][3][4][5][6][7] . The cement industry contributes about 7% of CO 2 production worldwide [8][9][10][11][12][13] . The laboratory work was conducted through the utilisation of different combinations of these materials in the production of mortar i.e no course aggregate was used in all mixtures. For all mixtures, the water to binder (W/B) ratio and sand to binder (S/B) ratio was fixed as 0.4 and 2.5, respectively. The GGBFS/CKD ratio in all the investigated mixtures was 2. The mortars were cast in 100 × 100 × 100 mm cubes for UPV measurements according to BS 1881-203 [14] while the prism moulds with the dimensions of 40 × 40 × 160 mm were used for compressive strength measurements according to BS EN 196-1 [15] . More data (images) about the method of mixing, preparation of samples, curing, state of samples before testing and experimental setups of the UPV and compressive strength tests are illustrated in Figs. 9 to 11 .

Declaration of Competing Interest
None.