Unlock instant, AI-driven research and patent intelligence for your innovation.

Desert sand and filamentous cellulose in concrete and mortar

A technology of cellulose and desert sand, which is applied in the field of concrete and mortar materials, and can solve problems such as the inability to accurately adjust the temperature

Active Publication Date: 2020-11-17
FPINNOVATIONS INC
View PDF21 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S.2017 / 0152176 also teaches a method of generating melting temperature by focusing the sun's rays; however, the temperature cannot be accurately adjusted

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Desert sand and filamentous cellulose in concrete and mortar
  • Desert sand and filamentous cellulose in concrete and mortar
  • Desert sand and filamentous cellulose in concrete and mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0139] The rheology / workability effect of mortars made from cellulose filaments (CF) on desert sand, cement compositions at W / C=1 was investigated.

[0140] The hydraulic binder was Lafarge Type 10 Portland cement. The desert sand consisted of natural desert sand imported from South Africa by Exo-Terra, distributed by Rolf C. Hagen Inc., Montreal, Canada, and purchased from Amazon. River sand was from Bomix, a general purpose dry sand purchased from Home Depot. The cellulose filaments were produced at FPInnovations' pilot plant, where they were fully dispersed in water before mixing. The water / cement (W / C) ratio is 1 and the S / C ratio is 2. The amounts of sand, cement, CF dosage, and water are found in Table 2.

[0141] The desired amount of dry ingredients such as sand and cement is measured and mixed thoroughly during the preparation stage. The dispersed CF was mixed with water and then poured into the dry sand and cement mixture. Mix it well by hand, and then place it ...

Embodiment II

[0150] Investigating the effect of CF-bonded desert sand (adhesion chemistry of cellulose filaments to spherical sand grains)

[0151] Raw materials included Ottawa sand (Dune Dunes, Ottawa, Illinois, USA, ordered from Global Gilson), river sand (river sand from Bomix, general purpose dry sand, purchased from Home Depot), and was obtained by Exo-Terra from Three types of desert sand (yellow, red and black) were imported from various locations in the world, distributed by Rolf C. Hagen Inc. of Montreal, Canada and purchased from Amazon. The cellulose filaments were produced at FPInnovations' pilot plant, where they were fully dispersed in water before mixing. Sand was mixed using two CF / sand ratios (0.5%, 1%) and cast in rectangular moulds. Surprisingly, after the water dries, the cast sand / CF mixture retains the same shape as it was cast, indicating that CF alone can bind the sand together.

[0152] After drying, the dried sand / CF mixture forms solid bodies such as Figure ...

Embodiment III

[0154] Study on the Rheology / Processability Effect of Cellulose Micro / Nanomaterials on Desert Sand, Cement Compositions at W / C=0.63

[0155] The raw materials were as previously described and the cellulose filaments were thoroughly dispersed in water prior to mixing. The water / cement (W / C) ratio was 0.63 and the S / C ratio was 2. Sand, cement, CF dosage, and water are listed in Table 3, and the shape of the small cylinder slump test is in Figure 7 shown in .

[0156] table 3

[0157] Formulations with compositions of desert sand and CF of W / C=0.63

[0158]

[0159] Sand and cement are measured and mixed well before water is added. The dispersed CF was mixed with water and then added to the dry sand and cement mixture. All ingredients were mixed well by hand and then placed into a metal cylinder on a flat clear plastic stand.

[0160] The addition of CF to the composition (even as little as 0.14% CF by weight of binder) had a significant effect on the rheology of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
widthaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present provides a concrete and mortar mix and composition thereof with poor quality sand such as desert sand, hydraulic binder (cement) and filamentous cellulose, wherein the desert sand / spherical sand replaces conventional concrete river sands. The present disclosure also relates a filamentous cellulose, such as, cellulose nano filaments (CF), cellulose nano filaments, cellulose nanofibrils(CNF) and microfibrillated cellulose (MFC) as a concrete / mortar and sand adhesion additive with hydraulic binder (cement), and to a method of making the concrete. The method also relates to a methodto prevent the sliding of individual sand grains against one another and therefor similarly contributes to the stabilization of the building materials.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 62 / 629,851 filed February 13, 2018, the contents of which are hereby incorporated by reference in their entirety. technical field [0003] The present disclosure generally relates to the use of low quality sand such as desert sand / spherical sand and filamentous cellulosic materials in concrete and mortar materials. Background technique [0004] Fine aggregate (sand), coarse aggregate (gravel) and hydraulic binders (cement) are the main raw materials used in the production of concrete and mortar which, when combined with water, result in a very common building material. Of the three raw materials, aggregates - sand and gravel - account for the largest percentage of primary material input (28.6 Gt / yr in 2010) and are the most extracted group of materials worldwide (Torres et al., 2017, Science, 357:970-971). Sand is not homogeneous, it is classified ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02B28C5/40C04B14/06C04B16/02
CPCC04B28/04C04B28/06C04B28/08C04B28/10C04B28/021C04B28/34C04B14/068C04B18/24C04B14/04C04B14/10C04B20/0076C04B16/0608C04B20/006
Inventor E·奥里维尔蔡小琳C·拉鲁什王晓宇
Owner FPINNOVATIONS INC