hpmc and hemc influence on injection hydration

HPMC and HEMC influence on cement hydration | Jérémie

HPMC and HEMC influence on cement hydration. … Pourchez et al. studied the influence of HEMC and HPMC on water retention capacity and revealed the sig- nificant influence of the molecular mass …

HPMC and HEMC influence on cement hydration – …

5.4. Discussion about cellulose ether influence on cement hydration. Concerning the study in water suspension, the OCH 3 content is doubtless the key parameter for hydration delay in the 22–29% range studied. Even if the methoxyl content appears to be the most important parameter which governs the hydration retardation process for HPMC and …Cited by: 134

HPMC and HEMC influence on cement hydration – DeepDyve

secondary effects generated by these admixtures such as the retardation of cement hydration. In this frame, a study of the impact of HEMC and HPMC molecule parameters on the modification of cement hydration was carried out. Minor influence of the molecular weight and of the hydroxypropyl or the hydroxyethyl group content was observed.Cited by: 134

HPMC and HEMC influence on cement hydration

1 HPMC and HEMC influence on cement hydration J. Pourchez 1 * A. Peschard 1 P. Grosseau 1 R. Guyonnet 1 B. Guilhot 1 F. Vallée 2 1 Ecole Nationale Supérieure des Mines de Saint-Etie nne (ENSMSE-SPIN) LPMG: process in granular media laboratory CNRS UMR 5148 158, cours Fauriel 42023 Saint-Etienne cedex 2 Fr ance

Influence of HEMC on the formation process of hydration

Feb 01, 2006· Read "HPMC and HEMC influence on cement hydration, Cement and Concrete Research" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Examination of thermo-gelation behavior of HPMC and …

In this frame, a study of the impact of HEMC and HPMC molecule parameters on the modification of cement hydration was carried out. Minor influence of the molecular weight and of the hydroxypropyl or the hydroxyethyl group content was observed.Cited by: 134

Influence of SBR latex and HPMC on the cement hydration at

Request PDF on ResearchGate | Influence of HEMC on the formation process of hydration products in cement pastes at early ages | For studying the interaction between cellulose ethers and cement …

CiteSeerX — 1

while the cement hydration is retarded when CEs are used [3, 8, 10, 17-22]. The molecular weights of CEs are important factors in cement hydration retardation. HEC, in comparison with MC and HPMC, commonly bring about a higher delay [9, 23, 24]. For HPMC and HEMC, the key parameter that induces the delay is the methoxyl content,

Influence of cellulose ethers on hydration products of

In the meanwhile, HPMC with more hydrophobic residues (methoxy and hydroxypropyl residues) showed smaller T agr and T gel than HEMC, which has hydroxyethyl and methoxy groups. T agr and T gel decreased with increasing number of hydrophobic groups. Molecular weight almost did not affect T agr and T gel of HPMC solution.Cited by: 11

So it can be concluded that mechanism, though, is different for the influence of SBR and HPMC on cement, the interactions between SBR or HPMC particles and cement indirectly reflect in the cement hydration retardation. Because of this, synergistic or accumulative retardation effect exists between SBR and HPMC on cement hydration at early age.Cited by: 3

CiteSeerX – Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): HPMC and HEMC influence on cement hydration

Jul 26, 2011· The cellulose ethers decrease the outer products and increase inner products of C-S-H gels. Compared to unmodified cement pastes, no new products are found in the modified cement pastes in the present experiment. The HEMC and HPMC investigation shows almost the same influence on the hydration products of Portland cement.Cited by: 8