Data on effect of a reducer of water and retarder of setting time admixtures of cement pastes and mortar in hardened stat

The aim of this work is to study the influence of the admixture of superplasticizers on the physical properties of cement paste to know the initial and final time, water content and mechanical performance of concrete. In this work we have incorporated an Advanced Superplasticité for Prolonged Slump Retention (ASPPSR402) in the formulation matrix of concrete at different percentages ranging from 0.5% to 5% by weight of cement with a step of 0.5%, while partially substituting the mixing water by the last one to reduce the amount of water used. The obtained results by different prospected formulations show that the admixture of ASPPSR402 in formulations matrix significantly reduces the (Water/Cement “W/C”) ratio. Subsequently, we observed that the initial and final time increases in function of the percentage of ASPPSR402. Similarly, the compressive strength at the young age, median age and long-term has been improved.


a b s t r a c t
The aim of this work is to study the influence of the admixture of superplasticizers on the physical properties of cement paste to know the initial and final time, water content and mechanical performance of concrete.
In this work we have incorporated an Advanced Superplasticité for Prolonged Slump Retention (ASPPSR402) in the formulation matrix of concrete at different percentages ranging from 0.5% to 5% by weight of cement with a step of 0.5%, while partially substituting the mixing water by the last one to reduce the amount of water used.
The obtained results by different prospected formulations show that the admixture of ASPPSR402 in formulations matrix significantly reduces the (Water/Cement "W/C") ratio. Subsequently, we observed that the initial and final time increases in function of the percentage of ASPPSR402. Similarly, the compressive strength at the young age, median age and long-term has been improved.
&  Table   Subject area  Civil Engineering, Material Science Engineering  More specific subject area Portland cement, Cement based admixture concrete,  Type of data  Table, image, text file, graph and figure How data was acquired Physical and mechanical tests (Laboratory): X-Ray Fluorescence (XRF), grading of sand, fresh cement paste, WC ration, Setting time, compressive strength Data format Raw and analyzed data Experimental factors

Specifications
The ten different volume fractions of advanced admixtures of superplasticizer for prolonged slump retention and cement used to manufacture the cement paste composites and mortar or concrete in a small mold.

Data
The data of the different formulations in a fresh and hardened state presented here are from eleven different cement pastes, mortar or concrete samples fabricated to compare cement pastes, mortar or concrete based of ASPPSR402 with Portland cement based concrete.

Sample preparation method
To achieve the objective of our study, we made a mortar of reference without additions and ten samples with the ASPPSR402 whose compositions are inspired by that of the normal mortar defined by EN196-1, with a quantity of water adjusted to obtain a paste with a standard consistency. The procedures followed for the preparation of the pastes cement has been done in maintaining fixed consistency standardized of all the formulations produced according to the specification of the standard (EN 196-3 þ A1) [1] and in modifying the ratio W/C. This experiment has achieved using the Vicat apparatus according to the standard (EN 197-1) [2] on one hand and on the other hand, the initial and final time of the cement paste has been studied using the Vicat apparatus according to the specification of the European standard EN 196-3.
To complete our work, we also studied the influence of the ASPPSR402 on the mechanical performance of mortar or concrete by using the compressive strength. The measures of the compressive strength are on standard prismatic standard (4 × 4 × 16) cm 3 according to the specification of the standard (NF EN 196-1) [3] at different percentages of ASPPSR402, ranging from 0.5% to 5% by weight of cement with a step of 0.5%. These prismatic standards are removed after one day and kept under water for the period of crushing. The measure of the compressive strength was performed at young age "2 days", "7 days" medium-term and long-term "28 days" in order to observe the gradual evolution of the mechanical performance of our formulations using ASPPSR402, based on time in days.
The compositions of the different formulations in a fresh and hardened state are recorded in the (Tables 1 and 2).

Characterization and data analysis of materials used
For evaluating the influence the Admixtures of advanced superplasticiser for prolonged slump retention "ASPPSR402", on physical properties of fresh cement paste and mechanical performance (mechanical resistance to compression) of mortars and /or concretes in the hardened State. We have Table 1 Matrices of formulations of fresh cement paste with the ASPPSR402.  preceded our work by the characterizing of materials used, to understand the phenomena which occur at the moment of mixing and hardening of concrete.

Cement
The type of cement used in this work is (CMI/42.5) from the plant of Amran in Yemen. The chemical and mineralogical compositions of clinker, gypsum and cement determined by XRF are presented in the Tables 3 and 4: 3.1.1.1. Physical properties. The physical properties of clinker and cement are gathered at the Table 5:

Sand
To prepare our mortar, we used a standard sand conferring to the standard EN 196-1 [4], delivered by the new French company of the Littoral. The analysis of the particle size of sands is illustrated in the Fig. 1.
The ASPPSR402 used in the formulation of mortars and/or concrete of high performance, delivered by the company CONMIX Ltd in Sharjah, United Arab Emirates. They are incorporated during the mixing of the concrete in equal a dose raining from 0.5% to 5% by weight of cement with a step of 0.5% to improve the physical and the mechanical properties of fresh or hardened State.
The physical properties of ASPPSR402 are collected at the Table 6:

The mixing water
To waste our mixture, we used tap water (wells). The physical properties of mixing water are assembled at the Table 7

Data analysis of the influence of the ASPPSR402 on setting time
The Fig. 7 reveals the evolution of the time as a function of the different percentages of ASPPSR402.

Data analysis of the influence of the ASPPSR402 on hardened state of mortar of concrete
The Fig. 8 presents the evolution of the compressive strength as a function of time in days. The Fig. 9 presents the gain in ' R MC ' at different percentages of ASPPSR402.

Transparency document. Supplementary material
Transparency document associated with this article can be found in the online version at http://dx. doi.org/10.1016/j.dib.2018.03.050.